Dec 19 19:55:22.001 INFO checking benschulz/acid against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:55:22.001 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/benschulz/acid:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 19:55:22.477 INFO [stdout] e5d030e499b5e7da9a6bb385cf56a573dbfbfc1b8897ad0d96da3d03e8432bbd
Dec 19 19:55:22.479 INFO running `"docker" "start" "-a" "e5d030e499b5e7da9a6bb385cf56a573dbfbfc1b8897ad0d96da3d03e8432bbd"`
Dec 19 19:55:23.713 INFO [stderr]     Checking acid v0.1.0 (/opt/crater/workdir)
Dec 19 19:55:24.323 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 19 19:55:24.323 INFO [stderr]   --> src/lib.rs:51:5
Dec 19 19:55:24.323 INFO [stderr]    |
Dec 19 19:55:24.323 INFO [stderr] 51 |     acid.clone();
Dec 19 19:55:24.323 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 19:55:24.323 INFO [stderr]    |
Dec 19 19:55:24.323 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 19:55:24.323 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 19 19:55:24.323 INFO [stderr] 
Dec 19 19:55:24.323 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 19 19:55:24.323 INFO [stderr]   --> src/lib.rs:52:5
Dec 19 19:55:24.323 INFO [stderr]    |
Dec 19 19:55:24.323 INFO [stderr] 52 |     acid.clone();
Dec 19 19:55:24.323 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 19:55:24.323 INFO [stderr]    |
Dec 19 19:55:24.323 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 19 19:55:24.323 INFO [stderr] 
Dec 19 19:55:24.529 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
Dec 19 19:55:25.068 INFO running `"docker" "inspect" "e5d030e499b5e7da9a6bb385cf56a573dbfbfc1b8897ad0d96da3d03e8432bbd"`
Dec 19 19:55:25.446 INFO running `"docker" "rm" "-f" "e5d030e499b5e7da9a6bb385cf56a573dbfbfc1b8897ad0d96da3d03e8432bbd"`
Dec 19 19:55:25.748 INFO [stdout] e5d030e499b5e7da9a6bb385cf56a573dbfbfc1b8897ad0d96da3d03e8432bbd