Dec 18 13:45:08.774 INFO checking nbchan-0.1.3 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 13:45:08.775 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/reg/nbchan/0.1.3:/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 13:45:09.012 INFO [stdout] 648efbdda33ebb6db216a5ad2c1d4d9c91f13ec2dc97a5ea5c9f7b3ed8c7081b
Dec 18 13:45:09.013 INFO running `"docker" "start" "-a" "648efbdda33ebb6db216a5ad2c1d4d9c91f13ec2dc97a5ea5c9f7b3ed8c7081b"`
Dec 18 13:45:09.584 INFO [stderr]     Checking nbchan v0.1.3 (/opt/crater/workdir)
Dec 18 13:45:10.559 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 18 13:45:10.559 INFO [stderr]   --> benches/lib.rs:38:9
Dec 18 13:45:10.559 INFO [stderr]    |
Dec 18 13:45:10.559 INFO [stderr] 38 |         tx.clone();
Dec 18 13:45:10.559 INFO [stderr]    |         ^^^^^^^^^^^
Dec 18 13:45:10.559 INFO [stderr]    |
Dec 18 13:45:10.559 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 13:45:10.559 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 18 13:45:10.559 INFO [stderr] 
Dec 18 13:45:10.559 INFO [stderr] warning: unused return value of `std::clone::Clone::clone` that must be used
Dec 18 13:45:10.559 INFO [stderr]   --> benches/lib.rs:46:9
Dec 18 13:45:10.560 INFO [stderr]    |
Dec 18 13:45:10.560 INFO [stderr] 46 |         tx.clone();
Dec 18 13:45:10.560 INFO [stderr]    |         ^^^^^^^^^^^
Dec 18 13:45:10.560 INFO [stderr]    |
Dec 18 13:45:10.560 INFO [stderr]    = note: cloning is often expensive and is not expected to have side effects
Dec 18 13:45:10.560 INFO [stderr] 
Dec 18 13:45:10.592 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
Dec 18 13:45:10.897 INFO running `"docker" "inspect" "648efbdda33ebb6db216a5ad2c1d4d9c91f13ec2dc97a5ea5c9f7b3ed8c7081b"`
Dec 18 13:45:11.002 INFO running `"docker" "rm" "-f" "648efbdda33ebb6db216a5ad2c1d4d9c91f13ec2dc97a5ea5c9f7b3ed8c7081b"`
Dec 18 13:45:11.132 INFO [stdout] 648efbdda33ebb6db216a5ad2c1d4d9c91f13ec2dc97a5ea5c9f7b3ed8c7081b