Compilation failure on 2019-12-20 nightly: unresolved imports `crate::codegen::pointer_sized_int::isize_`, `crate::codegen::pointer_sized_int::usize_`

[rocurley]

I'm unable to compule packed_simd using nightly-2019-12-20-x86_64-unknown-linux-gnu. The error message is below:

   Compiling packed_simd v0.3.3
error[E0432]: unresolved imports `crate::codegen::pointer_sized_int::isize_`, `crate::codegen::pointer_sized_int::usize_`
 --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/vSize.rs:3:41
  |
3 | use crate::codegen::pointer_sized_int::{isize_, usize_};
  |                                         ^^^^^^  ^^^^^^ no `usize_` in `codegen::pointer_sized_int`
  |                                         |
  |                                         no `isize_` in `codegen::pointer_sized_int`

error[E0432]: unresolved imports `crate::codegen::pointer_sized_int::isize_`, `crate::codegen::pointer_sized_int::usize_`
 --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/vSize.rs:3:41
  |
3 | use crate::codegen::pointer_sized_int::{isize_, usize_};
  |                                         ^^^^^^  ^^^^^^ no `usize_` in `codegen::pointer_sized_int`
  |                                         |
  |                                         no `isize_` in `codegen::pointer_sized_int`

error: cannot find macro `__cfg_if_items` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/pointer_sized_int.rs:5:1
   |
5  | / cfg_if! {
6  | |     if #[cfg(target_pointer_width = "8")] {
7  | |         crate type isize_ = i8;
8  | |         crate type usize_ = u8;
...  |
27 | |     }
28 | | }
   | |_^
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/swap_bytes.rs:169:1
    |
169 | / cfg_if! {
170 | |     if #[cfg(target_pointer_width = "8")] {
171 | |         impl_swap_bytes!(v16: isizex2, usizex2,);
172 | |         impl_swap_bytes!(v32: isizex4, usizex4,);
...   |
188 | |     }
189 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/shuffle1_dyn.rs:313:1
    |
313 | impl_shuffle1_dyn!(u64x2);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/shuffle1_dyn.rs:309:1
    |
309 | impl_shuffle1_dyn!(u32x4);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/shuffle1_dyn.rs:298:1
    |
298 | impl_shuffle1_dyn!(u8x16);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/shuffle1_dyn.rs:297:1
    |
297 | impl_shuffle1_dyn!(u8x8);
    | ^^^^^^^^^^^^^^^^^^^^^^^^^ in this macro invocation
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:69:1
   |
69 | impl_mask_reductions!(msizex8);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:68:1
   |
68 | impl_mask_reductions!(msizex4);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:67:1
   |
67 | impl_mask_reductions!(msizex2);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:65:1
   |
65 | impl_mask_reductions!(m128x4);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:64:1
   |
64 | impl_mask_reductions!(m128x2);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:63:1
   |
63 | impl_mask_reductions!(m128x1);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:61:1
   |
61 | impl_mask_reductions!(m64x8);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:60:1
   |
60 | impl_mask_reductions!(m64x4);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:59:1
   |
59 | impl_mask_reductions!(m64x2);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:55:1
   |
55 | impl_mask_reductions!(m32x16);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:54:1
   |
54 | impl_mask_reductions!(m32x8);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:53:1
   |
53 | impl_mask_reductions!(m32x4);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:52:1
   |
52 | impl_mask_reductions!(m32x2);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:50:1
   |
50 | impl_mask_reductions!(m16x32);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:49:1
   |
49 | impl_mask_reductions!(m16x16);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:48:1
   |
48 | impl_mask_reductions!(m16x8);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:47:1
   |
47 | impl_mask_reductions!(m16x4);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:46:1
   |
46 | impl_mask_reductions!(m16x2);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:44:1
   |
44 | impl_mask_reductions!(m8x64);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:43:1
   |
43 | impl_mask_reductions!(m8x32);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:42:1
   |
42 | impl_mask_reductions!(m8x16);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:41:1
   |
41 | impl_mask_reductions!(m8x8);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:40:1
   |
40 | impl_mask_reductions!(m8x4);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `impl_mask_reductions` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:39:1
   |
39 | impl_mask_reductions!(m8x2);
   | ^^^^^^^^^^^^^^^^^^^^

error: cannot find macro `__cfg_if_items` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/reductions/mask.rs:21:1
   |
21 | / cfg_if! {
22 | |     if #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] {
23 | |         #[macro_use]
24 | |         mod x86;
...  |
36 | |     }
37 | | }
   | |_^
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/sqrte.rs:15:1
   |
15 | / cfg_if! {
16 | |     if #[cfg(all(target_arch = "x86_64", feature = "sleef-sys"))] {
17 | |         use sleef_sys::*;
18 | |         cfg_if! {
...  |
66 | |     }
67 | | }
   | |_^
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/sqrt.rs:41:1
    |
41  | / cfg_if! {
42  | |     if #[cfg(target_arch = "s390x")] {
43  | |         // FIXME: https://github.com/rust-lang-nursery/packed_simd/issues/14
44  | |         impl_unary!(f32x2[f32; 2]: sqrt_f32);
...   |
102 | |     }
103 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/sin_pi.rs:35:1
   |
35 | / cfg_if! {
36 | |     if #[cfg(all(target_arch = "x86_64", feature = "sleef-sys"))] {
37 | |         use sleef_sys::*;
38 | |         cfg_if! {
...  |
86 | |     }
87 | | }
   | |_^
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/sin_cos_pi.rs:143:1
    |
143 | / cfg_if! {
144 | |     if #[cfg(all(target_arch = "x86_64", feature = "sleef-sys"))] {
145 | |         use sleef_sys::*;
146 | |         cfg_if! {
...   |
194 | |     }
195 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/sin.rs:41:1
    |
41  | / cfg_if! {
42  | |     if #[cfg(target_arch = "s390x")] {
43  | |         // FIXME: https://github.com/rust-lang-nursery/packed_simd/issues/14
44  | |         impl_unary!(f32x2[f32; 2]: sin_f32);
...   |
102 | |     }
103 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/powf.rs:41:1
    |
41  | / cfg_if! {
42  | |     if #[cfg(target_arch = "s390x")] {
43  | |         // FIXME: https://github.com/rust-lang-nursery/packed_simd/issues/14
44  | |         impl_binary!(f32x2[f32; 2]: powf_f32);
...   |
111 | |     }
112 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/mul_add.rs:36:1
    |
36  | / cfg_if! {
37  | |     if #[cfg(target_arch = "s390x")] {
38  | |         // FIXME: https://github.com/rust-lang-nursery/packed_simd/issues/14
39  | |         macro_rules! impl_broken {
...   |
108 | |     }
109 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/ln.rs:41:1
    |
41  | / cfg_if! {
42  | |     if #[cfg(target_arch = "s390x")] {
43  | |         // FIXME: https://github.com/rust-lang-nursery/packed_simd/issues/14
44  | |         impl_unary!(f32x2[f32; 2]: ln_f32);
...   |
111 | |     }
112 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/exp.rs:41:1
    |
41  | / cfg_if! {
42  | |     if #[cfg(target_arch = "s390x")] {
43  | |         // FIXME: https://github.com/rust-lang-nursery/packed_simd/issues/14
44  | |         impl_unary!(f32x2[f32; 2]: exp_f32);
...   |
111 | |     }
112 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/cos_pi.rs:35:1
   |
35 | / cfg_if! {
36 | |     if #[cfg(all(target_arch = "x86_64", feature = "sleef-sys"))] {
37 | |         use sleef_sys::*;
38 | |         cfg_if! {
...  |
86 | |     }
87 | | }
   | |_^
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/cos.rs:41:1
    |
41  | / cfg_if! {
42  | |     if #[cfg(target_arch = "s390x")] {
43  | |         // FIXME: https://github.com/rust-lang-nursery/packed_simd/issues/14
44  | |         impl_unary!(f32x2[f32; 2]: cos_f32);
...   |
102 | |     }
103 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/math/float/abs.rs:41:1
    |
41  | / cfg_if! {
42  | |     if #[cfg(target_arch = "s390x")] {
43  | |         // FIXME: https://github.com/rust-lang-nursery/packed_simd/issues/14
44  | |         impl_unary!(f32x2[f32; 2]: fabs_f32);
...   |
102 | |     }
103 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/codegen/bit_manip.rs:334:1
    |
334 | / cfg_if! {
335 | |     if #[cfg(target_pointer_width = "8")] {
336 | |         impl_bit_manip! { sized: usizex2, usize, isizex2, isize, u8x2 }
337 | |         impl_bit_manip! { sized: usizex4, usize, isizex4, isize, u8x4 }
...   |
353 | |     }
354 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: cannot find macro `__cfg_if_items` in this scope
   --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/lib.rs:240:1
    |
240 | / cfg_if! {
241 | |     if #[cfg(feature = "core_arch")] {
242 | |         #[allow(unused_imports)]
243 | |         use core_arch as arch;
...   |
247 | |     }
248 | | }
    | |_^
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0277]: the trait bound `Simd<[u8; 8]>: codegen::shuffle1_dyn::Shuffle1Dyn` is not satisfied
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/api/shuffle1_dyn.rs:8:13
   |
8  |  /             pub fn shuffle1_dyn<I>(self, indices: I) -> Self
9  |  |             where
10 |  |                 Self: codegen::shuffle1_dyn::Shuffle1Dyn<Indices = I>,
11 |  |             {
12 |  |                 codegen::shuffle1_dyn::Shuffle1Dyn::shuffle1_dyn(self, indices)
13 |  |             }
   |  |_____________^ the trait `codegen::shuffle1_dyn::Shuffle1Dyn` is not implemented for `Simd<[u8; 8]>`
   | 
  ::: /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/v64.rs:10:1
   |
10 | /  impl_u!([u8; 8]: u8x8, m8x8 | u8, u8 | test_v64 | x0, x1, x2, x3, x4, x5, x6, x7 |
11 | |          From: |
12 | |          /// A 64-bit vector with 8 `u8` lanes.
13 | |  );
   | |___- in this macro invocation
   |
   = help: the following implementations were found:
             <Simd<[*const T; 2]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*const T; 4]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*const T; 8]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*mut T; 2]> as codegen::shuffle1_dyn::Shuffle1Dyn>
           and 77 others
   = help: see issue #48214
   = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable

error[E0277]: the trait bound `Simd<[u8; 16]>: codegen::shuffle1_dyn::Shuffle1Dyn` is not satisfied
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/api/shuffle1_dyn.rs:8:13
   |
8  |  /             pub fn shuffle1_dyn<I>(self, indices: I) -> Self
9  |  |             where
10 |  |                 Self: codegen::shuffle1_dyn::Shuffle1Dyn<Indices = I>,
11 |  |             {
12 |  |                 codegen::shuffle1_dyn::Shuffle1Dyn::shuffle1_dyn(self, indices)
13 |  |             }
   |  |_____________^ the trait `codegen::shuffle1_dyn::Shuffle1Dyn` is not implemented for `Simd<[u8; 16]>`
   | 
  ::: /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/v128.rs:11:1
   |
11 | /  impl_u!([u8; 16]: u8x16, m8x16 | u8, u16 | test_v128 |
12 | |          x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15 |
13 | |          From: |
14 | |          /// A 128-bit vector with 16 `u8` lanes.
15 | |  );
   | |___- in this macro invocation
   |
   = help: the following implementations were found:
             <Simd<[*const T; 2]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*const T; 4]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*const T; 8]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*mut T; 2]> as codegen::shuffle1_dyn::Shuffle1Dyn>
           and 77 others
   = help: see issue #48214
   = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable

error[E0277]: the trait bound `Simd<[u32; 4]>: codegen::shuffle1_dyn::Shuffle1Dyn` is not satisfied
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/api/shuffle1_dyn.rs:8:13
   |
8  | /             pub fn shuffle1_dyn<I>(self, indices: I) -> Self
9  | |             where
10 | |                 Self: codegen::shuffle1_dyn::Shuffle1Dyn<Indices = I>,
11 | |             {
12 | |                 codegen::shuffle1_dyn::Shuffle1Dyn::shuffle1_dyn(self, indices)
13 | |             }
   | |_____________^ the trait `codegen::shuffle1_dyn::Shuffle1Dyn` is not implemented for `Simd<[u32; 4]>`
   | 
  ::: /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/v128.rs:39:1
   |
39 | / impl_u!([u32; 4]: u32x4, m32x4 | u32, u8 | test_v128 | x0, x1, x2, x3 |
40 | |         From: u8x4, u16x4 |
41 | |         /// A 128-bit vector with 4 `u32` lanes.
42 | | );
   | |__- in this macro invocation
   |
   = help: the following implementations were found:
             <Simd<[*const T; 2]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*const T; 4]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*const T; 8]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*mut T; 2]> as codegen::shuffle1_dyn::Shuffle1Dyn>
           and 77 others
   = help: see issue #48214
   = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable

error[E0277]: the trait bound `Simd<[u64; 2]>: codegen::shuffle1_dyn::Shuffle1Dyn` is not satisfied
  --> /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/api/shuffle1_dyn.rs:8:13
   |
8  | /             pub fn shuffle1_dyn<I>(self, indices: I) -> Self
9  | |             where
10 | |                 Self: codegen::shuffle1_dyn::Shuffle1Dyn<Indices = I>,
11 | |             {
12 | |                 codegen::shuffle1_dyn::Shuffle1Dyn::shuffle1_dyn(self, indices)
13 | |             }
   | |_____________^ the trait `codegen::shuffle1_dyn::Shuffle1Dyn` is not implemented for `Simd<[u64; 2]>`
   | 
  ::: /home/roger/.cargo/registry/src/proxy-git.cwkhome.fun-1ecc6299db9ec823/packed_simd-0.3.3/src/v128.rs:56:1
   |
56 | / impl_u!([u64; 2]: u64x2, m64x2 | u64, u8 | test_v128 | x0, x1 |
57 | |         From: u8x2, u16x2, u32x2 |
58 | |         /// A 128-bit vector with 2 `u64` lanes.
59 | | );
   | |__- in this macro invocation
   |
   = help: the following implementations were found:
             <Simd<[*const T; 2]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*const T; 4]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*const T; 8]> as codegen::shuffle1_dyn::Shuffle1Dyn>
             <Simd<[*mut T; 2]> as codegen::shuffle1_dyn::Shuffle1Dyn>
           and 77 others
   = help: see issue #48214
   = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable

error: aborting due to 51 previous errors

Some errors have detailed explanations: E0277, E0432.
For more information about an error, try `rustc --explain E0277`.
error: could not compile `packed_simd`.

[rocurley]

Okay, I've figured this out. A different dependency of my project (cpuprofiler 0.0.3) had a dependency on cfg-if v0.1.2. The 0.3.3 release advertises itself as compatible with cfg-if v0.1.2, because it predates 127a0fc , which bumped the requirement to cfg-if v0.1.6. I think releasing a new version containing 127a0fc will prevent anybody from running into this in the future.