Dec 19 19:58:04.925 INFO checking benbrunton/nmm_lib against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:58:04.926 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/benbrunton/nmm_lib:/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 19:58:05.191 INFO [stdout] 7bd6d953f61bf17feca9b0f70f1f1bf37ed1d0b9e7703f789b9cb379b9426356
Dec 19 19:58:05.193 INFO running `"docker" "start" "-a" "7bd6d953f61bf17feca9b0f70f1f1bf37ed1d0b9e7703f789b9cb379b9426356"`
Dec 19 19:58:05.778 INFO [stderr]     Checking serde v1.0.34
Dec 19 19:58:14.313 INFO [stderr]     Checking serde_json v1.0.13
Dec 19 19:58:16.384 INFO [stderr]     Checking nmm_lib v0.1.0 (/opt/crater/workdir)
Dec 19 19:58:17.256 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.50s
Dec 19 19:58:17.854 INFO running `"docker" "inspect" "7bd6d953f61bf17feca9b0f70f1f1bf37ed1d0b9e7703f789b9cb379b9426356"`
Dec 19 19:58:18.096 INFO running `"docker" "rm" "-f" "7bd6d953f61bf17feca9b0f70f1f1bf37ed1d0b9e7703f789b9cb379b9426356"`
Dec 19 19:58:18.320 INFO [stdout] 7bd6d953f61bf17feca9b0f70f1f1bf37ed1d0b9e7703f789b9cb379b9426356