thread 'rustc' panicked at 'Encountered invalid discriminant while decoding `Option`.', ...compiler/rustc_serialize/src/serialize.rs:345:18

[matthiaskrgr]

I think this happens when miri tries to run with an outdated std.

I have a locally build toolchain with miri, and sometimes after reinstalling/updating the toolchain (x.py install), I think miri does not catch that it was updated and would have to recompile its std.
cargo miri run will panic then:

Preparing a sysroot for Miri (target: x86_64-unknown-linux-gnu)... done
WARNING: Ignoring `RUSTC_WRAPPER` environment variable, Miri does not support wrapping.
    Finished dev [unoptimized + debuginfo] target(s) in 0.01s
     Running `/home/matthias/.rustup/toolchains/local-debug-assertions/bin/cargo-miri runner target/miri/x86_64-unknown-linux-gnu/debug/l`
thread 'rustc' panicked at 'Encountered invalid discriminant while decoding `Option`.', /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_serialize/src/serialize.rs:345:18
stack backtrace:
   0:     0x7fe342b06ea0 - std::backtrace_rs::backtrace::libunwind::trace::hf6fb1df2bbadf8d0
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fe342b06ea0 - std::backtrace_rs::backtrace::trace_unsynchronized::h5f7dbb945ac36487
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fe342b06ea0 - std::sys_common::backtrace::_print_fmt::h58b1e1f17859bf37
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fe342b06ea0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::ha27e2876521b95d4
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fe342badb28 - core::fmt::write::hd4eb0d8409af39da
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/fmt/mod.rs:1254:17
   5:     0x7fe342b48e7f - std::io::Write::write_fmt::h376e4c00acf46354
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/io/mod.rs:1698:15
   6:     0x7fe342b06ca5 - std::sys_common::backtrace::_print::h6dd46fd4a45eba1a
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7fe342b06ca5 - std::sys_common::backtrace::print::hedf6d065edced65d
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7fe342b32c74 - std::panicking::default_hook::{{closure}}::h88d207ff62ae2e8b
   9:     0x7fe342b328da - std::panicking::default_hook::h877b90f6afd34c69
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:288:9
  10:     0x7fe34558d115 - <alloc[32b43e9536c01a3]::boxed::Box<dyn for<'a, 'b> core[c5d5d662f7508502]::ops::function::Fn<(&'a core[c5d5d662f7508502]::panic::panic_info::PanicInfo<'b>,), Output = ()> + core[c5d5d662f7508502]::marker::Send + core[c5d5d662f7508502]::marker::Sync> as core[c5d5d662f7508502]::ops::function::Fn<(&core[c5d5d662f7508502]::panic::panic_info::PanicInfo,)>>::call
                               at /home/matthias/vcs/github/rust_debug_assertions/library/alloc/src/boxed.rs:1976:9
  11:     0x7fe34558d115 - rustc_driver_impl[bd9eb8f6bc15632]::DEFAULT_HOOK::{closure#0}::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_driver_impl/src/lib.rs:1208:17
  12:     0x7fe342b33451 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h023e22a59e074dbe
                               at /home/matthias/vcs/github/rust_debug_assertions/library/alloc/src/boxed.rs:1976:9
  13:     0x7fe342b33451 - std::panicking::rust_panic_with_hook::h1856b639c06e5ebf
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:695:13
  14:     0x7fe342b07182 - std::panicking::begin_panic_handler::{{closure}}::h79db58a425189147
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:580:13
  15:     0x7fe342b06f86 - std::sys_common::backtrace::__rust_end_short_backtrace::hfd5b8e38c40bea32
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:150:18
  16:     0x7fe342b32fb2 - rust_begin_unwind
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:578:5
  17:     0x7fe342bd1ac3 - core::panicking::panic_fmt::h5863111baae9147e
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/panicking.rs:67:14
  18:     0x7fe34649fc19 - <core[c5d5d662f7508502]::option::Option<rustc_target[d41639d7a5f2c900]::spec::PanicStrategy> as rustc_serialize[19e01c829501f4d9]::serialize::Decodable<rustc_metadata[b851ce4e52e46107]::rmeta::decoder::DecodeContext>>::decode
  19:     0x7fe3464420f3 - <rustc_metadata[b851ce4e52e46107]::rmeta::CrateRoot as rustc_serialize[19e01c829501f4d9]::serialize::Decodable<rustc_metadata[b851ce4e52e46107]::rmeta::decoder::DecodeContext>>::decode
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/rmeta/mod.rs:217:29
  20:     0x7fe34637f2b5 - <rustc_metadata[b851ce4e52e46107]::rmeta::LazyValue<rustc_metadata[b851ce4e52e46107]::rmeta::CrateRoot>>::decode::<&rustc_metadata[b851ce4e52e46107]::rmeta::decoder::MetadataBlob>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/rmeta/decoder.rs:254:9
  21:     0x7fe34637f2b5 - <rustc_metadata[b851ce4e52e46107]::rmeta::decoder::MetadataBlob>::get_root
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/rmeta/decoder.rs:698:9
  22:     0x7fe34637f2b5 - <rustc_metadata[b851ce4e52e46107]::locator::CrateLocator>::crate_matches
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/locator.rs:668:20
  23:     0x7fe34637f2b5 - <rustc_metadata[b851ce4e52e46107]::locator::CrateLocator>::extract_one
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/locator.rs:581:42
  24:     0x7fe34637e54b - <rustc_metadata[b851ce4e52e46107]::locator::CrateLocator>::extract_lib
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/locator.rs:509:20
  25:     0x7fe34637d750 - <rustc_metadata[b851ce4e52e46107]::locator::CrateLocator>::find_library_crate
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/locator.rs:469:39
  26:     0x7fe34637beb6 - <rustc_metadata[b851ce4e52e46107]::locator::CrateLocator>::maybe_load_library_crate
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/locator.rs:378:9
  27:     0x7fe3464237eb - <rustc_metadata[b851ce4e52e46107]::creader::CrateLoader>::load
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/creader.rs:570:29
  28:     0x7fe34641f684 - <rustc_metadata[b851ce4e52e46107]::creader::CrateLoader>::maybe_resolve_crate
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/creader.rs:541:19
  29:     0x7fe34641e4d3 - <rustc_metadata[b851ce4e52e46107]::creader::CrateLoader>::resolve_crate
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/creader.rs:495:15
  30:     0x7fe346427629 - <rustc_metadata[b851ce4e52e46107]::creader::CrateLoader>::process_extern_crate
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_metadata/src/creader.rs:978:28
  31:     0x7fe3476e7709 - <rustc_resolve[a9d4c8a661337589]::build_reduced_graph::BuildReducedGraphVisitor>::build_reduced_graph_for_extern_crate::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_resolve/src/build_reduced_graph.rs:845:17
  32:     0x7fe3476e7709 - <rustc_resolve[a9d4c8a661337589]::Resolver>::crate_loader::<core[c5d5d662f7508502]::option::Option<rustc_span[586fe534fb00e1b1]::def_id::CrateNum>, <rustc_resolve[a9d4c8a661337589]::build_reduced_graph::BuildReducedGraphVisitor>::build_reduced_graph_for_extern_crate::{closure#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_resolve/src/lib.rs:1437:9
  33:     0x7fe347673004 - <rustc_resolve[a9d4c8a661337589]::build_reduced_graph::BuildReducedGraphVisitor>::build_reduced_graph_for_extern_crate
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_resolve/src/build_reduced_graph.rs:844:28
  34:     0x7fe347673004 - <rustc_resolve[a9d4c8a661337589]::build_reduced_graph::BuildReducedGraphVisitor>::build_reduced_graph_for_item
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_resolve/src/build_reduced_graph.rs:666:17
  35:     0x7fe347673004 - <rustc_resolve[a9d4c8a661337589]::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast[83f4d57a5bed716d]::visit::Visitor>::visit_item
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_resolve/src/build_reduced_graph.rs:1320:17
  36:     0x7fe347675769 - rustc_ast[83f4d57a5bed716d]::visit::walk_crate::<rustc_resolve[a9d4c8a661337589]::build_reduced_graph::BuildReducedGraphVisitor>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_ast/src/visit.rs:266:5
  37:     0x7fe347675769 - <rustc_resolve[a9d4c8a661337589]::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast[83f4d57a5bed716d]::visit::Visitor>::visit_crate
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_resolve/src/build_reduced_graph.rs:1515:13
  38:     0x7fe3476d6ba4 - <rustc_resolve[a9d4c8a661337589]::Resolver>::build_reduced_graph
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_resolve/src/build_reduced_graph.rs:195:9
  39:     0x7fe3476d6ba4 - <rustc_resolve[a9d4c8a661337589]::Resolver as rustc_expand[a83ef3700848785e]::base::ResolverExpand>::visit_ast_fragment_with_placeholders
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_resolve/src/macros.rs:194:40
  40:     0x7fe345728ebd - <rustc_expand[a83ef3700848785e]::expand::MacroExpander>::collect_invocations
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_expand/src/expand.rs:586:13
  41:     0x7fe3457248d6 - <rustc_expand[a83ef3700848785e]::expand::MacroExpander>::fully_expand_fragment
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_expand/src/expand.rs:415:13
  42:     0x7fe345724521 - <rustc_expand[a83ef3700848785e]::expand::MacroExpander>::expand_crate
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_expand/src/expand.rs:402:21
  43:     0x7fe3461aa94c - rustc_interface[8eabf1f657444b51]::passes::configure_and_expand::{closure#1}::{closure#1}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_interface/src/passes.rs:243:50
  44:     0x7fe3461aa94c - <rustc_data_structures[e2bc31891c4386a2]::profiling::VerboseTimingGuard>::run::<rustc_ast[83f4d57a5bed716d]::ast::Crate, rustc_interface[8eabf1f657444b51]::passes::configure_and_expand::{closure#1}::{closure#1}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_data_structures/src/profiling.rs:752:9
  45:     0x7fe3461aa94c - <rustc_session[da85c5850522b61b]::session::Session>::time::<rustc_ast[83f4d57a5bed716d]::ast::Crate, rustc_interface[8eabf1f657444b51]::passes::configure_and_expand::{closure#1}::{closure#1}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_session/src/utils.rs:11:50
  46:     0x7fe3461aa94c - rustc_interface[8eabf1f657444b51]::passes::configure_and_expand::{closure#1}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_interface/src/passes.rs:243:21
  47:     0x7fe3461aa94c - <rustc_data_structures[e2bc31891c4386a2]::profiling::VerboseTimingGuard>::run::<rustc_ast[83f4d57a5bed716d]::ast::Crate, rustc_interface[8eabf1f657444b51]::passes::configure_and_expand::{closure#1}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_data_structures/src/profiling.rs:752:9
  48:     0x7fe3461aa94c - <rustc_session[da85c5850522b61b]::session::Session>::time::<rustc_ast[83f4d57a5bed716d]::ast::Crate, rustc_interface[8eabf1f657444b51]::passes::configure_and_expand::{closure#1}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_session/src/utils.rs:11:50
  49:     0x7fe3460f32e0 - rustc_interface[8eabf1f657444b51]::passes::configure_and_expand
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_interface/src/passes.rs:194:13
  50:     0x7fe3460f32e0 - rustc_interface[8eabf1f657444b51]::passes::resolver_for_lowering
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_interface/src/passes.rs:566:17
  51:     0x7fe3471d6196 - <rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task::<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/dep_graph/graph.rs:372:53
  52:     0x7fe3471d6196 - rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context::<<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:82:9
  53:     0x7fe3471d6196 - <std[876bbee9698a2b49]::thread::local::LocalKey<core[c5d5d662f7508502]::cell::Cell<*const ()>>>::try_with::<rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context<<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:252:16
  54:     0x7fe3471d6196 - <std[876bbee9698a2b49]::thread::local::LocalKey<core[c5d5d662f7508502]::cell::Cell<*const ()>>>::with::<rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context<<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:228:9
  55:     0x7fe3471d6196 - rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context::<<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:79:5
  56:     0x7fe3471d6196 - <rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind as rustc_query_system[d03734ec93b9b811]::dep_graph::DepKind>::with_deps::<<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/dep_graph/mod.rs:58:13
  57:     0x7fe3471d6196 - rustc_middle[f11263fd67a2f182]::ty::context::tls::with_context::<<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind as rustc_query_system[d03734ec93b9b811]::dep_graph::DepKind>::with_deps<<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:36
  58:     0x7fe3471d6196 - rustc_middle[f11263fd67a2f182]::ty::context::tls::with_context_opt::<rustc_middle[f11263fd67a2f182]::ty::context::tls::with_context<<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind as rustc_query_system[d03734ec93b9b811]::dep_graph::DepKind>::with_deps<<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:100:18
  59:     0x7fe3471d6196 - rustc_middle[f11263fd67a2f182]::ty::context::tls::with_context::<<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind as rustc_query_system[d03734ec93b9b811]::dep_graph::DepKind>::with_deps<<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:5
  60:     0x7fe3471d6196 - <rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind as rustc_query_system[d03734ec93b9b811]::dep_graph::DepKind>::with_deps::<<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/dep_graph/mod.rs:55:9
  61:     0x7fe3472997b3 - <rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepGraphData<rustc_middle[f11263fd67a2f182]::dep_graph::dep_node::DepKind>>::with_task::<(rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt, rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering), (), rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/dep_graph/graph.rs:372:22
  62:     0x7fe3472997b3 - rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr::<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:502:28
  63:     0x7fe3472997b3 - rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context::<rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:82:9
  64:     0x7fe3472997b3 - <std[876bbee9698a2b49]::thread::local::LocalKey<core[c5d5d662f7508502]::cell::Cell<*const ()>>>::try_with::<rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context<rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:252:16
  65:     0x7fe3472997b3 - <std[876bbee9698a2b49]::thread::local::LocalKey<core[c5d5d662f7508502]::cell::Cell<*const ()>>>::with::<rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context<rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:228:9
  66:     0x7fe3470b2d36 - rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context::<rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:79:5
  67:     0x7fe3470b2d36 - <rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt as rustc_query_system[d03734ec93b9b811]::query::QueryContext>::start_query::<(rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex), rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:127:13
  68:     0x7fe3470b2d36 - rustc_middle[f11263fd67a2f182]::ty::context::tls::with_related_context::<<rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt as rustc_query_system[d03734ec93b9b811]::query::QueryContext>::start_query<(rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex), rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:133:9
  69:     0x7fe3470b2d36 - rustc_middle[f11263fd67a2f182]::ty::context::tls::with_context::<rustc_middle[f11263fd67a2f182]::ty::context::tls::with_related_context<<rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt as rustc_query_system[d03734ec93b9b811]::query::QueryContext>::start_query<(rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex), rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:36
  70:     0x7fe3470b2d36 - rustc_middle[f11263fd67a2f182]::ty::context::tls::with_context_opt::<rustc_middle[f11263fd67a2f182]::ty::context::tls::with_context<rustc_middle[f11263fd67a2f182]::ty::context::tls::with_related_context<<rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt as rustc_query_system[d03734ec93b9b811]::query::QueryContext>::start_query<(rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex), rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:100:18
  71:     0x7fe3470b2d36 - rustc_middle[f11263fd67a2f182]::ty::context::tls::with_context::<rustc_middle[f11263fd67a2f182]::ty::context::tls::with_related_context<<rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt as rustc_query_system[d03734ec93b9b811]::query::QueryContext>::start_query<(rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex), rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:111:5
  72:     0x7fe3470b2d36 - rustc_middle[f11263fd67a2f182]::ty::context::tls::with_related_context::<<rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt as rustc_query_system[d03734ec93b9b811]::query::QueryContext>::start_query<(rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex), rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}>::{closure#0}, (rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex)>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:124:5
  73:     0x7fe3470b2d36 - <rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt as rustc_query_system[d03734ec93b9b811]::query::QueryContext>::start_query::<(rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex), rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#2}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:112:9
  74:     0x7fe3470b2d36 - rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job_incr::<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:491:9
  75:     0x7fe3470b2d36 - rustc_query_system[d03734ec93b9b811]::query::plumbing::execute_job::<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:403:23
  76:     0x7fe3470b2d36 - rustc_query_system[d03734ec93b9b811]::query::plumbing::try_execute_query::<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:358:13
  77:     0x7fe3474e5966 - rustc_query_system[d03734ec93b9b811]::query::plumbing::get_query::<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:805:36
  78:     0x7fe3474e5966 - stacker[f871904c967749]::maybe_grow::<(rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, core[c5d5d662f7508502]::option::Option<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex>), rustc_query_system[d03734ec93b9b811]::query::plumbing::get_query<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#0}>
                               at /home/matthias/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/stacker-0.1.15/src/lib.rs:55:9
  79:     0x7fe3474e5966 - rustc_data_structures[e2bc31891c4386a2]::stack::ensure_sufficient_stack::<(rustc_middle[f11263fd67a2f182]::query::erase::Erased<[u8; 8usize]>, core[c5d5d662f7508502]::option::Option<rustc_query_system[d03734ec93b9b811]::dep_graph::graph::DepNodeIndex>), rustc_query_system[d03734ec93b9b811]::query::plumbing::get_query<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>::{closure#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_data_structures/src/stack.rs:17:5
  80:     0x7fe3474e5966 - rustc_query_system[d03734ec93b9b811]::query::plumbing::get_query::<rustc_query_impl[965307517017fa97]::queries::resolver_for_lowering, rustc_query_impl[965307517017fa97]::plumbing::QueryCtxt>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_system/src/query/plumbing.rs:805:9
  81:     0x7fe3474e5966 - <rustc_query_impl[965307517017fa97]::Queries as rustc_middle[f11263fd67a2f182]::ty::query::QueryEngine>::resolver_for_lowering
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_query_impl/src/plumbing.rs:829:17
  82:     0x7fe3455f1db3 - <rustc_middle[f11263fd67a2f182]::ty::query::TyCtxtAt>::resolver_for_lowering
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/query.rs:396:29
  83:     0x7fe3455f1db3 - <rustc_middle[f11263fd67a2f182]::ty::context::TyCtxt>::resolver_for_lowering
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/query.rs:383:35
  84:     0x7fe3455f1db3 - rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}::{closure#2}::{closure#2}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_driver_impl/src/lib.rs:370:52
  85:     0x7fe3455f1db3 - <rustc_middle[f11263fd67a2f182]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}::{closure#2}::{closure#2}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context.rs:559:37
  86:     0x7fe3455f1db3 - rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context::<<rustc_middle[f11263fd67a2f182]::ty::context::GlobalCtxt>::enter<rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}::{closure#2}::{closure#2}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>::{closure#0}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:82:9
  87:     0x7fe3455f1db3 - <std[876bbee9698a2b49]::thread::local::LocalKey<core[c5d5d662f7508502]::cell::Cell<*const ()>>>::try_with::<rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context<<rustc_middle[f11263fd67a2f182]::ty::context::GlobalCtxt>::enter<rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}::{closure#2}::{closure#2}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>::{closure#0}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>::{closure#0}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:252:16
  88:     0x7fe3455f1db3 - <std[876bbee9698a2b49]::thread::local::LocalKey<core[c5d5d662f7508502]::cell::Cell<*const ()>>>::with::<rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context<<rustc_middle[f11263fd67a2f182]::ty::context::GlobalCtxt>::enter<rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}::{closure#2}::{closure#2}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>::{closure#0}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>::{closure#0}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/local.rs:228:9
  89:     0x7fe3455f1db3 - rustc_middle[f11263fd67a2f182]::ty::context::tls::enter_context::<<rustc_middle[f11263fd67a2f182]::ty::context::GlobalCtxt>::enter<rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}::{closure#2}::{closure#2}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>::{closure#0}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context/tls.rs:79:5
  90:     0x7fe3455f1db3 - <rustc_middle[f11263fd67a2f182]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}::{closure#2}::{closure#2}, &rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_middle/src/ty/context.rs:559:9
  91:     0x7fe3455f1db3 - <rustc_interface[8eabf1f657444b51]::queries::QueryResult<&rustc_middle[f11263fd67a2f182]::ty::context::GlobalCtxt>>::enter::<&rustc_data_structures[e2bc31891c4386a2]::steal::Steal<(rustc_middle[f11263fd67a2f182]::ty::ResolverAstLowering, alloc[32b43e9536c01a3]::rc::Rc<rustc_ast[83f4d57a5bed716d]::ast::Crate>)>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}::{closure#2}::{closure#2}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_interface/src/queries.rs:71:9
  92:     0x7fe345602227 - rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}::{closure#2}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_driver_impl/src/lib.rs:370:13
  93:     0x7fe345602227 - <rustc_interface[8eabf1f657444b51]::interface::Compiler>::enter::<rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}::{closure#2}, core[c5d5d662f7508502]::result::Result<core[c5d5d662f7508502]::option::Option<rustc_interface[8eabf1f657444b51]::queries::Linker>, rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_interface/src/queries.rs:394:19
  94:     0x7fe3455a0b9b - rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_driver_impl/src/lib.rs:331:22
  95:     0x7fe3455a0b9b - rustc_interface[8eabf1f657444b51]::interface::run_compiler::<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_interface/src/interface.rs:301:21
  96:     0x7fe3455a0b9b - rustc_span[586fe534fb00e1b1]::set_source_map::<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_span/src/lib.rs:1040:5
  97:     0x7fe3455a0b9b - rustc_interface[8eabf1f657444b51]::interface::run_compiler::<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_interface/src/interface.rs:295:13
  98:     0x7fe3455a0b9b - <scoped_tls[c6512a5451dfceef]::ScopedKey<rustc_span[586fe534fb00e1b1]::SessionGlobals>>::set::<rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>
                               at /home/matthias/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/scoped-tls-1.0.0/src/lib.rs:137:9
  99:     0x7fe3455a0b9b - rustc_span[586fe534fb00e1b1]::create_session_globals_then::<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}>
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_span/src/lib.rs:120:5
 100:     0x7fe3455a0b9b - rustc_interface[8eabf1f657444b51]::util::run_in_thread_pool_with_globals::<rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_interface/src/util.rs:152:38
 101:     0x7fe3455a0b9b - std[876bbee9698a2b49]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[8eabf1f657444b51]::util::run_in_thread_pool_with_globals<rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:134:18
 102:     0x7fe3455a32b1 - <std[876bbee9698a2b49]::thread::Builder>::spawn_unchecked_::<rustc_interface[8eabf1f657444b51]::util::run_in_thread_pool_with_globals<rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#1}::{closure#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/mod.rs:526:17
 103:     0x7fe3455a32b1 - <core[c5d5d662f7508502]::panic::unwind_safe::AssertUnwindSafe<<std[876bbee9698a2b49]::thread::Builder>::spawn_unchecked_<rustc_interface[8eabf1f657444b51]::util::run_in_thread_pool_with_globals<rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#1}::{closure#0}> as core[c5d5d662f7508502]::ops::function::FnOnce<()>>::call_once
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/panic/unwind_safe.rs:271:9
 104:     0x7fe3455a32b1 - std[876bbee9698a2b49]::panicking::try::do_call::<core[c5d5d662f7508502]::panic::unwind_safe::AssertUnwindSafe<<std[876bbee9698a2b49]::thread::Builder>::spawn_unchecked_<rustc_interface[8eabf1f657444b51]::util::run_in_thread_pool_with_globals<rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#1}::{closure#0}>, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:485:40
 105:     0x7fe3455a32b1 - std[876bbee9698a2b49]::panicking::try::<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, core[c5d5d662f7508502]::panic::unwind_safe::AssertUnwindSafe<<std[876bbee9698a2b49]::thread::Builder>::spawn_unchecked_<rustc_interface[8eabf1f657444b51]::util::run_in_thread_pool_with_globals<rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#1}::{closure#0}>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:449:19
 106:     0x7fe3455a32b1 - std[876bbee9698a2b49]::panic::catch_unwind::<core[c5d5d662f7508502]::panic::unwind_safe::AssertUnwindSafe<<std[876bbee9698a2b49]::thread::Builder>::spawn_unchecked_<rustc_interface[8eabf1f657444b51]::util::run_in_thread_pool_with_globals<rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#1}::{closure#0}>, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panic.rs:140:14
 107:     0x7fe3455a32b1 - <std[876bbee9698a2b49]::thread::Builder>::spawn_unchecked_::<rustc_interface[8eabf1f657444b51]::util::run_in_thread_pool_with_globals<rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#1}
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/thread/mod.rs:525:30
 108:     0x7fe3455a32b1 - <<std[876bbee9698a2b49]::thread::Builder>::spawn_unchecked_<rustc_interface[8eabf1f657444b51]::util::run_in_thread_pool_with_globals<rustc_interface[8eabf1f657444b51]::interface::run_compiler<core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>, rustc_driver_impl[bd9eb8f6bc15632]::run_compiler::{closure#1}>::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c5d5d662f7508502]::result::Result<(), rustc_span[586fe534fb00e1b1]::ErrorGuaranteed>>::{closure#1} as core[c5d5d662f7508502]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
                               at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/ops/function.rs:250:5
 109:     0x7fe342b47f7a - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h09205b8a60ec493c
                               at /home/matthias/vcs/github/rust_debug_assertions/library/alloc/src/boxed.rs:1962:9
 110:     0x7fe342b47f7a - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb0193177fb414942
                               at /home/matthias/vcs/github/rust_debug_assertions/library/alloc/src/boxed.rs:1962:9
 111:     0x7fe342b0d355 - std::sys::unix::thread::Thread::new::thread_start::h96fbca9a9a0efa67
                               at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys/unix/thread.rs:108:17
 112:     0x7fe34289ebb5 - <unknown>
 113:     0x7fe342920d90 - <unknown>
 114:                0x0 - <unknown>

error: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.71.0-dev running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type bin -C embed-bitcode=no -C debuginfo=2 -C incremental=[REDACTED] -C target-cpu=native

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [resolver_for_lowering] getting the resolver for lowering

[matthiaskrgr]

Yeah, so running cargo miri setup of a different toolchain (e.g. nightly) and then running setup again for the locally installed toolchain is a workaround.

[saethlin]

See rust-lang/rust#110572 (comment)

[matthiaskrgr]

well, this is not really a problem of stage x vs stage y since it's always this stage in my case, but the underlying issue (different host compilers) might be the same as this is also the case for different stages

[matthiaskrgr]

could miri compute a checksum of its own binary and save/check that in the std it prepares to know if it needs to rebuild?

[RalfJung]

So to be clear, this is from running cargo miri yourself, in a locally linked toolchain?

We have a similar issue inside rustc bootstrap itself, where x.py test miri fails because the toolchain doesn't get rebuilt as it should. That one could probably be resolved by hooking into the bootstrap logic that clears sysroots.

But fundamentally this is not just a Miri issue, it also affects rustc: we hash the compiler channel and version into the sysroot to check for rebuilds (and rustc does that for its incremental cache), but for local builds that is just dev and so we don't notice when the version changes. (Which is basically what @saethlin referenced above, so Cc rust-lang/rust#76720.)

[matthiaskrgr]

So to be clear, this is from running cargo miri yourself, in a locally linked toolchain?

exactly 🙂

[RalfJung]

I think the exact same issue would arise if you did cargo run with locally built toolchains (on a crate with some dependencies, and after touch src/lib.rs or so to make rustc actually do something), so trying to work around this on the Miri doesn't seem like the right approach.

[RalfJung]

Closing as duplicate of rust-lang/rust#76720.