Dec 18 11:15:58.426 INFO checking shortcut-4.1.3 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252 Dec 18 11:15:58.426 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/shortcut/4.1.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"` Dec 18 11:15:58.955 INFO [stdout] 42659b6902ed816b3396cd797a735d93e46d011ce484f27d1cc3d7fc7135e495 Dec 18 11:15:58.962 INFO running `"docker" "start" "-a" "42659b6902ed816b3396cd797a735d93e46d011ce484f27d1cc3d7fc7135e495"` Dec 18 11:16:00.598 INFO [stderr] Checking shortcut v4.1.3 (/opt/crater/workdir) Dec 18 11:16:01.168 INFO [stderr] warning: variable does not need to be mutable Dec 18 11:16:01.168 INFO [stderr] --> src/idx.rs:55:21 Dec 18 11:16:01.168 INFO [stderr] | Dec 18 11:16:01.168 INFO [stderr] 55 | if let Some(mut l) = self.map.get_mut(key) { Dec 18 11:16:01.168 INFO [stderr] | ----^ Dec 18 11:16:01.168 INFO [stderr] | | Dec 18 11:16:01.168 INFO [stderr] | help: remove this `mut` Dec 18 11:16:01.168 INFO [stderr] | Dec 18 11:16:01.168 INFO [stderr] = note: #[warn(unused_mut)] on by default Dec 18 11:16:01.168 INFO [stderr] Dec 18 11:16:01.404 INFO [stderr] warning: variable does not need to be mutable Dec 18 11:16:01.404 INFO [stderr] --> src/idx.rs:55:21 Dec 18 11:16:01.404 INFO [stderr] | Dec 18 11:16:01.404 INFO [stderr] 55 | if let Some(mut l) = self.map.get_mut(key) { Dec 18 11:16:01.404 INFO [stderr] | ----^ Dec 18 11:16:01.404 INFO [stderr] | | Dec 18 11:16:01.404 INFO [stderr] | help: remove this `mut` Dec 18 11:16:01.404 INFO [stderr] | Dec 18 11:16:01.404 INFO [stderr] = note: #[warn(unused_mut)] on by default Dec 18 11:16:01.404 INFO [stderr] Dec 18 11:16:01.718 INFO [stderr] error[E0308]: mismatched types Dec 18 11:16:01.718 INFO [stderr] --> benches/bench.rs:62:59 Dec 18 11:16:01.718 INFO [stderr] | Dec 18 11:16:01.718 INFO [stderr] 62 | cmp: cmp::Comparison::Equal(cmp::Value::Const(format!("{}", i))), Dec 18 11:16:01.718 INFO [stderr] | ^^^^^^^^^^^^^^^^ expected enum `std::borrow::Cow`, found struct `std::string::String` Dec 18 11:16:01.718 INFO [stderr] | Dec 18 11:16:01.718 INFO [stderr] = note: expected type `std::borrow::Cow<'_, _>` Dec 18 11:16:01.718 INFO [stderr] found type `std::string::String` Dec 18 11:16:01.718 INFO [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) Dec 18 11:16:01.718 INFO [stderr] Dec 18 11:16:01.725 INFO [stderr] error: aborting due to previous error Dec 18 11:16:01.725 INFO [stderr] Dec 18 11:16:01.725 INFO [stderr] For more information about this error, try `rustc --explain E0308`. Dec 18 11:16:01.734 INFO [stderr] error: Could not compile `shortcut`. Dec 18 11:16:01.734 INFO [stderr] Dec 18 11:16:01.734 INFO [stderr] To learn more, run the command again with --verbose. Dec 18 11:16:02.063 INFO running `"docker" "inspect" "42659b6902ed816b3396cd797a735d93e46d011ce484f27d1cc3d7fc7135e495"` Dec 18 11:16:02.198 INFO running `"docker" "rm" "-f" "42659b6902ed816b3396cd797a735d93e46d011ce484f27d1cc3d7fc7135e495"` Dec 18 11:16:02.318 INFO [stdout] 42659b6902ed816b3396cd797a735d93e46d011ce484f27d1cc3d7fc7135e495