Dec 05 01:27:30.454 INFO checking LiteUnder/testing_rust against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 01:27:30.454 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 01:27:30.612 INFO [stdout] 693b9eed85eca9eb20fa5f93c142df04d4c81cff1880d501940e67bf4bdd892f
Dec 05 01:27:30.613 INFO running `"docker" "start" "-a" "693b9eed85eca9eb20fa5f93c142df04d4c81cff1880d501940e67bf4bdd892f"`
Dec 05 01:27:30.978 INFO [stderr] usermod: no changes
Dec 05 01:27:31.014 INFO [stderr]     Checking testing_rust v0.1.0 (/source)
Dec 05 01:27:31.452 INFO [stderr] warning: unused variable: `x`
Dec 05 01:27:31.452 INFO [stderr]   --> src/main.rs:12:9
Dec 05 01:27:31.452 INFO [stderr]    |
Dec 05 01:27:31.452 INFO [stderr] 12 |     let x = Some(5);
Dec 05 01:27:31.452 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 05 01:27:31.452 INFO [stderr]    |
Dec 05 01:27:31.452 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 01:27:31.452 INFO [stderr] 
Dec 05 01:27:31.452 INFO [stderr] warning: unused variable: `y`
Dec 05 01:27:31.452 INFO [stderr]   --> src/main.rs:13:9
Dec 05 01:27:31.452 INFO [stderr]    |
Dec 05 01:27:31.452 INFO [stderr] 13 |     let y: Option<i8> = None;
Dec 05 01:27:31.453 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 05 01:27:31.453 INFO [stderr] 
Dec 05 01:27:31.490 INFO [stderr] warning: unused variable: `x`
Dec 05 01:27:31.490 INFO [stderr]   --> src/main.rs:12:9
Dec 05 01:27:31.490 INFO [stderr]    |
Dec 05 01:27:31.490 INFO [stderr] 12 |     let x = Some(5);
Dec 05 01:27:31.490 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 05 01:27:31.490 INFO [stderr]    |
Dec 05 01:27:31.490 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 01:27:31.490 INFO [stderr] 
Dec 05 01:27:31.490 INFO [stderr] warning: unused variable: `y`
Dec 05 01:27:31.490 INFO [stderr]   --> src/main.rs:13:9
Dec 05 01:27:31.490 INFO [stderr]    |
Dec 05 01:27:31.490 INFO [stderr] 13 |     let y: Option<i8> = None;
Dec 05 01:27:31.490 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 05 01:27:31.490 INFO [stderr] 
Dec 05 01:27:31.499 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
Dec 05 01:27:31.501 INFO [stderr] su: No module specific data is present
Dec 05 01:27:31.745 INFO running `"docker" "inspect" "693b9eed85eca9eb20fa5f93c142df04d4c81cff1880d501940e67bf4bdd892f"`
Dec 05 01:27:31.831 INFO running `"docker" "rm" "-f" "693b9eed85eca9eb20fa5f93c142df04d4c81cff1880d501940e67bf4bdd892f"`
Dec 05 01:27:31.944 INFO [stdout] 693b9eed85eca9eb20fa5f93c142df04d4c81cff1880d501940e67bf4bdd892f