Dec 17 22:13:13.937 INFO checking jmatta697/matta_bc against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 22:13:13.937 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/jmatta697/matta_bc:/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 17 22:13:14.188 INFO [stdout] fefab55e0436ab02ffb5e78aac543ca261d87cfb06782556ae02bf0abb26e388
Dec 17 22:13:14.190 INFO running `"docker" "start" "-a" "fefab55e0436ab02ffb5e78aac543ca261d87cfb06782556ae02bf0abb26e388"`
Dec 17 22:13:15.193 INFO [stderr]     Checking memchr v2.1.1
Dec 17 22:13:15.908 INFO [stderr]     Checking aho-corasick v0.6.9
Dec 17 22:13:16.442 INFO [stderr]     Checking regex v1.0.6
Dec 17 22:13:18.704 INFO [stderr]     Checking matta_bc v0.1.0 (/opt/crater/workdir)
Dec 17 22:13:19.221 INFO [stderr] warning: value assigned to `variable_value_str` is never read
Dec 17 22:13:19.221 INFO [stderr]    --> src/main.rs:424:13
Dec 17 22:13:19.222 INFO [stderr]     |
Dec 17 22:13:19.222 INFO [stderr] 424 |     let mut variable_value_str = String::new();
Dec 17 22:13:19.222 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^
Dec 17 22:13:19.222 INFO [stderr]     |
Dec 17 22:13:19.223 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 17 22:13:19.223 INFO [stderr] 
Dec 17 22:13:19.540 INFO [stderr] warning: value assigned to `variable_value_str` is never read
Dec 17 22:13:19.540 INFO [stderr]    --> src/main.rs:424:13
Dec 17 22:13:19.540 INFO [stderr]     |
Dec 17 22:13:19.540 INFO [stderr] 424 |     let mut variable_value_str = String::new();
Dec 17 22:13:19.540 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^
Dec 17 22:13:19.540 INFO [stderr]     |
Dec 17 22:13:19.540 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 17 22:13:19.540 INFO [stderr] 
Dec 17 22:13:19.788 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.70s
Dec 17 22:13:20.222 INFO running `"docker" "inspect" "fefab55e0436ab02ffb5e78aac543ca261d87cfb06782556ae02bf0abb26e388"`
Dec 17 22:13:20.432 INFO running `"docker" "rm" "-f" "fefab55e0436ab02ffb5e78aac543ca261d87cfb06782556ae02bf0abb26e388"`
Dec 17 22:13:20.712 INFO [stdout] fefab55e0436ab02ffb5e78aac543ca261d87cfb06782556ae02bf0abb26e388