Dec 12 07:34:44.201 INFO checking shortcut-4.1.3 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 07:34:44.202 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 07:34:44.672 INFO [stdout] 7339033f90f53b852a125f0b38827e4c9531ece3ca2802061631c1b1665482cf
Dec 12 07:34:44.713 INFO running `"docker" "start" "-a" "7339033f90f53b852a125f0b38827e4c9531ece3ca2802061631c1b1665482cf"`
Dec 12 07:34:45.833 INFO [stderr] usermod: no changes
Dec 12 07:34:45.952 INFO [stderr]     Checking shortcut v4.1.3 (/source)
Dec 12 07:34:46.743 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:34:46.743 INFO [stderr]   --> src/idx.rs:55:21
Dec 12 07:34:46.743 INFO [stderr]    |
Dec 12 07:34:46.743 INFO [stderr] 55 |         if let Some(mut l) = self.map.get_mut(key) {
Dec 12 07:34:46.743 INFO [stderr]    |                     ----^
Dec 12 07:34:46.743 INFO [stderr]    |                     |
Dec 12 07:34:46.743 INFO [stderr]    |                     help: remove this `mut`
Dec 12 07:34:46.743 INFO [stderr]    |
Dec 12 07:34:46.743 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 07:34:46.743 INFO [stderr] 
Dec 12 07:34:47.536 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:34:47.536 INFO [stderr]   --> src/idx.rs:55:21
Dec 12 07:34:47.536 INFO [stderr]    |
Dec 12 07:34:47.536 INFO [stderr] 55 |         if let Some(mut l) = self.map.get_mut(key) {
Dec 12 07:34:47.536 INFO [stderr]    |                     ----^
Dec 12 07:34:47.536 INFO [stderr]    |                     |
Dec 12 07:34:47.536 INFO [stderr]    |                     help: remove this `mut`
Dec 12 07:34:47.536 INFO [stderr]    |
Dec 12 07:34:47.536 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 07:34:47.536 INFO [stderr] 
Dec 12 07:34:48.425 INFO [stderr] error[E0308]: mismatched types
Dec 12 07:34:48.425 INFO [stderr]   --> benches/bench.rs:62:59
Dec 12 07:34:48.425 INFO [stderr]    |
Dec 12 07:34:48.425 INFO [stderr] 62 |             cmp: cmp::Comparison::Equal(cmp::Value::Const(format!("{}", i))),
Dec 12 07:34:48.425 INFO [stderr]    |                                                           ^^^^^^^^^^^^^^^^ expected enum `std::borrow::Cow`, found struct `std::string::String`
Dec 12 07:34:48.425 INFO [stderr]    |
Dec 12 07:34:48.425 INFO [stderr]    = note: expected type `std::borrow::Cow<'_, _>`
Dec 12 07:34:48.425 INFO [stderr]               found type `std::string::String`
Dec 12 07:34:48.425 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 12 07:34:48.425 INFO [stderr] 
Dec 12 07:34:48.440 INFO [stderr] error: aborting due to previous error
Dec 12 07:34:48.440 INFO [stderr] 
Dec 12 07:34:48.440 INFO [stderr] For more information about this error, try `rustc --explain E0308`.
Dec 12 07:34:48.452 INFO [stderr] error: Could not compile `shortcut`.
Dec 12 07:34:48.452 INFO [stderr] 
Dec 12 07:34:48.452 INFO [stderr] To learn more, run the command again with --verbose.
Dec 12 07:34:48.452 INFO [stderr] su: No module specific data is present
Dec 12 07:34:49.038 INFO running `"docker" "inspect" "7339033f90f53b852a125f0b38827e4c9531ece3ca2802061631c1b1665482cf"`
Dec 12 07:34:49.444 INFO running `"docker" "rm" "-f" "7339033f90f53b852a125f0b38827e4c9531ece3ca2802061631c1b1665482cf"`
Dec 12 07:34:49.626 INFO [stdout] 7339033f90f53b852a125f0b38827e4c9531ece3ca2802061631c1b1665482cf