Dec 18 06:42:50.503 INFO checking LiteUnder/testing_rust against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 06:42:50.503 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/LiteUnder/testing_rust:/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 06:42:50.695 INFO [stdout] d27143d0c4b744ef63c8a64544bfab20e89e753a400c48d82d39c3cb59bff947
Dec 18 06:42:50.699 INFO running `"docker" "start" "-a" "d27143d0c4b744ef63c8a64544bfab20e89e753a400c48d82d39c3cb59bff947"`
Dec 18 06:42:51.264 INFO [stderr]     Checking testing_rust v0.1.0 (/opt/crater/workdir)
Dec 18 06:42:51.425 INFO [stderr] warning: unused variable: `x`
Dec 18 06:42:51.425 INFO [stderr]   --> src/main.rs:12:9
Dec 18 06:42:51.425 INFO [stderr]    |
Dec 18 06:42:51.425 INFO [stderr] 12 |     let x = Some(5);
Dec 18 06:42:51.425 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 18 06:42:51.425 INFO [stderr]    |
Dec 18 06:42:51.425 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 06:42:51.425 INFO [stderr] 
Dec 18 06:42:51.425 INFO [stderr] warning: unused variable: `y`
Dec 18 06:42:51.425 INFO [stderr]   --> src/main.rs:13:9
Dec 18 06:42:51.425 INFO [stderr]    |
Dec 18 06:42:51.425 INFO [stderr] 13 |     let y: Option<i8> = None;
Dec 18 06:42:51.425 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 18 06:42:51.425 INFO [stderr] 
Dec 18 06:42:51.440 INFO [stderr] warning: unused variable: `x`
Dec 18 06:42:51.440 INFO [stderr]   --> src/main.rs:12:9
Dec 18 06:42:51.440 INFO [stderr]    |
Dec 18 06:42:51.440 INFO [stderr] 12 |     let x = Some(5);
Dec 18 06:42:51.440 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 18 06:42:51.440 INFO [stderr]    |
Dec 18 06:42:51.440 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 06:42:51.440 INFO [stderr] 
Dec 18 06:42:51.441 INFO [stderr] warning: unused variable: `y`
Dec 18 06:42:51.441 INFO [stderr]   --> src/main.rs:13:9
Dec 18 06:42:51.441 INFO [stderr]    |
Dec 18 06:42:51.441 INFO [stderr] 13 |     let y: Option<i8> = None;
Dec 18 06:42:51.441 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 18 06:42:51.441 INFO [stderr] 
Dec 18 06:42:51.460 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
Dec 18 06:42:51.731 INFO running `"docker" "inspect" "d27143d0c4b744ef63c8a64544bfab20e89e753a400c48d82d39c3cb59bff947"`
Dec 18 06:42:51.842 INFO running `"docker" "rm" "-f" "d27143d0c4b744ef63c8a64544bfab20e89e753a400c48d82d39c3cb59bff947"`
Dec 18 06:42:51.947 INFO [stdout] d27143d0c4b744ef63c8a64544bfab20e89e753a400c48d82d39c3cb59bff947