Dec 18 03:42:03.640 INFO checking austbot/tab against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 03:42:03.640 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/austbot/tab:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 03:42:04.109 INFO [stdout] 754a1d1db0f828b84fddc9cd02645eb9e12c884be02848570985ea3a4f58ab0e
Dec 18 03:42:04.111 INFO running `"docker" "start" "-a" "754a1d1db0f828b84fddc9cd02645eb9e12c884be02848570985ea3a4f58ab0e"`
Dec 18 03:42:05.760 INFO [stderr]     Checking swim v0.1.0 (/opt/crater/workdir/swim)
Dec 18 03:42:06.256 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:42:06.256 INFO [stderr]   --> swim/src/lib.rs:54:9
Dec 18 03:42:06.256 INFO [stderr]    |
Dec 18 03:42:06.256 INFO [stderr] 54 |         self.sender.as_ref().unwrap().send(job);
Dec 18 03:42:06.256 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:42:06.256 INFO [stderr]    |
Dec 18 03:42:06.256 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 03:42:06.256 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:42:06.256 INFO [stderr] 
Dec 18 03:42:06.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:42:06.268 INFO [stderr]   --> swim/src/lib.rs:54:9
Dec 18 03:42:06.269 INFO [stderr]    |
Dec 18 03:42:06.269 INFO [stderr] 54 |         self.sender.as_ref().unwrap().send(job);
Dec 18 03:42:06.269 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:42:06.270 INFO [stderr]    |
Dec 18 03:42:06.270 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 03:42:06.272 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:42:06.272 INFO [stderr] 
Dec 18 03:42:06.290 INFO [stderr]     Checking tab v0.1.0 (/opt/crater/workdir)
Dec 18 03:42:06.857 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
Dec 18 03:42:07.718 INFO running `"docker" "inspect" "754a1d1db0f828b84fddc9cd02645eb9e12c884be02848570985ea3a4f58ab0e"`
Dec 18 03:42:07.938 INFO running `"docker" "rm" "-f" "754a1d1db0f828b84fddc9cd02645eb9e12c884be02848570985ea3a4f58ab0e"`
Dec 18 03:42:08.188 INFO [stdout] 754a1d1db0f828b84fddc9cd02645eb9e12c884be02848570985ea3a4f58ab0e