ICE: thread 'rustc' panicked at 'Box<Any>'

[peterjoel]

I originally submitted this to rust-lang, but it was closed as a clippy issue:

rust-lang/rust#65184

[mati865]

Sorry I couldn't find it earlier but is should be fixed by #4590
It should be included in next nightly.

[flip1995]

Thanks for the report, this is already fixed though.