Dec 19 09:00:10.605 INFO checking sgkim126/rust-worksheet against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 09:00:10.605 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/sgkim126/rust-worksheet:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:00:11.026 INFO [stdout] 911ab2f0b751c064b4919b9072159898b0aaa028754c0cc52af74ead05f5ae80
Dec 19 09:00:11.030 INFO running `"docker" "start" "-a" "911ab2f0b751c064b4919b9072159898b0aaa028754c0cc52af74ead05f5ae80"`
Dec 19 09:00:12.952 INFO [stderr]     Checking rust-worksheet v0.1.0 (/opt/crater/workdir)
Dec 19 09:00:14.136 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
Dec 19 09:00:14.136 INFO [stderr]   --> src/main.rs:26:52
Dec 19 09:00:14.136 INFO [stderr]    |
Dec 19 09:00:14.136 INFO [stderr] 26 |         .ok().expect("sysroot is not valid UTF-8").trim_right_matches(
Dec 19 09:00:14.136 INFO [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^
Dec 19 09:00:14.136 INFO [stderr]    |
Dec 19 09:00:14.136 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 19 09:00:14.136 INFO [stderr] 
Dec 19 09:00:14.186 INFO [stderr] warning: function is never used: `get_sysroot`
Dec 19 09:00:14.186 INFO [stderr]   --> src/main.rs:17:1
Dec 19 09:00:14.186 INFO [stderr]    |
Dec 19 09:00:14.186 INFO [stderr] 17 | fn get_sysroot() -> PathBuf {
Dec 19 09:00:14.186 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 09:00:14.186 INFO [stderr]    |
Dec 19 09:00:14.186 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 09:00:14.186 INFO [stderr] 
Dec 19 09:00:14.332 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
Dec 19 09:00:14.332 INFO [stderr]   --> src/main.rs:26:52
Dec 19 09:00:14.332 INFO [stderr]    |
Dec 19 09:00:14.332 INFO [stderr] 26 |         .ok().expect("sysroot is not valid UTF-8").trim_right_matches(
Dec 19 09:00:14.332 INFO [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^
Dec 19 09:00:14.332 INFO [stderr]    |
Dec 19 09:00:14.332 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 19 09:00:14.332 INFO [stderr] 
Dec 19 09:00:14.424 INFO [stderr] warning: function is never used: `get_sysroot`
Dec 19 09:00:14.424 INFO [stderr]   --> src/main.rs:17:1
Dec 19 09:00:14.424 INFO [stderr]    |
Dec 19 09:00:14.424 INFO [stderr] 17 | fn get_sysroot() -> PathBuf {
Dec 19 09:00:14.424 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 09:00:14.424 INFO [stderr]    |
Dec 19 09:00:14.424 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 09:00:14.424 INFO [stderr] 
Dec 19 09:00:14.465 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
Dec 19 09:00:15.214 INFO running `"docker" "inspect" "911ab2f0b751c064b4919b9072159898b0aaa028754c0cc52af74ead05f5ae80"`
Dec 19 09:00:15.481 INFO running `"docker" "rm" "-f" "911ab2f0b751c064b4919b9072159898b0aaa028754c0cc52af74ead05f5ae80"`
Dec 19 09:00:15.756 INFO [stdout] 911ab2f0b751c064b4919b9072159898b0aaa028754c0cc52af74ead05f5ae80