thread 'rustc' panicked at 'Testing the ICE message', clippy_lints/src/utils/internal_lints.rs note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace. error: internal compiler error: unexpected panic note: the compiler unexpectedly panicked. this is a bug. note: we would appreciate a bug report: https://github.com/rust-lang/rust-clippy/issues/new note: Clippy version: foo