Dec 17 12:26:26.891 INFO checking vlttnv/rusty-shell against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 12:26:26.891 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/vlttnv/rusty-shell:/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 17 12:26:27.369 INFO [stdout] 1bf37c4c2f93f5623c10ff699a5ec647f4e31b9613f8ac7a966c085f3b9db966
Dec 17 12:26:27.371 INFO running `"docker" "start" "-a" "1bf37c4c2f93f5623c10ff699a5ec647f4e31b9613f8ac7a966c085f3b9db966"`
Dec 17 12:26:29.352 INFO [stderr]     Checking rusty_shell v0.1.0 (/opt/crater/workdir)
Dec 17 12:26:29.653 INFO [stderr] warning: variable `exit_code` is assigned to, but never used
Dec 17 12:26:29.653 INFO [stderr]   --> src/main.rs:27:13
Dec 17 12:26:29.653 INFO [stderr]    |
Dec 17 12:26:29.653 INFO [stderr] 27 |     let mut exit_code;
Dec 17 12:26:29.653 INFO [stderr]    |             ^^^^^^^^^
Dec 17 12:26:29.653 INFO [stderr]    |
Dec 17 12:26:29.653 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 12:26:29.653 INFO [stderr]    = note: consider using `_exit_code` instead
Dec 17 12:26:29.653 INFO [stderr] 
Dec 17 12:26:29.653 INFO [stderr] warning: value assigned to `exit_code` is never read
Dec 17 12:26:29.653 INFO [stderr]   --> src/main.rs:41:9
Dec 17 12:26:29.653 INFO [stderr]    |
Dec 17 12:26:29.653 INFO [stderr] 41 |         exit_code = rsh_run(&args)
Dec 17 12:26:29.653 INFO [stderr]    |         ^^^^^^^^^
Dec 17 12:26:29.653 INFO [stderr]    |
Dec 17 12:26:29.653 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 17 12:26:29.653 INFO [stderr] 
Dec 17 12:26:29.677 INFO [stderr] warning: variable `exit_code` is assigned to, but never used
Dec 17 12:26:29.677 INFO [stderr]   --> src/main.rs:27:13
Dec 17 12:26:29.677 INFO [stderr]    |
Dec 17 12:26:29.677 INFO [stderr] 27 |     let mut exit_code;
Dec 17 12:26:29.677 INFO [stderr]    |             ^^^^^^^^^
Dec 17 12:26:29.677 INFO [stderr]    |
Dec 17 12:26:29.677 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 12:26:29.677 INFO [stderr]    = note: consider using `_exit_code` instead
Dec 17 12:26:29.677 INFO [stderr] 
Dec 17 12:26:29.677 INFO [stderr] warning: value assigned to `exit_code` is never read
Dec 17 12:26:29.677 INFO [stderr]   --> src/main.rs:41:9
Dec 17 12:26:29.677 INFO [stderr]    |
Dec 17 12:26:29.677 INFO [stderr] 41 |         exit_code = rsh_run(&args)
Dec 17 12:26:29.677 INFO [stderr]    |         ^^^^^^^^^
Dec 17 12:26:29.677 INFO [stderr]    |
Dec 17 12:26:29.677 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 17 12:26:29.677 INFO [stderr] 
Dec 17 12:26:29.804 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
Dec 17 12:26:30.986 INFO running `"docker" "inspect" "1bf37c4c2f93f5623c10ff699a5ec647f4e31b9613f8ac7a966c085f3b9db966"`
Dec 17 12:26:31.262 INFO running `"docker" "rm" "-f" "1bf37c4c2f93f5623c10ff699a5ec647f4e31b9613f8ac7a966c085f3b9db966"`
Dec 17 12:26:31.576 INFO [stdout] 1bf37c4c2f93f5623c10ff699a5ec647f4e31b9613f8ac7a966c085f3b9db966