Dec 18 04:44:30.879 INFO checking ZacharyKamerling/persistence against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 04:44:30.879 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/ZacharyKamerling/persistence:/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 04:44:31.380 INFO [stdout] c4bc0f7f1897c2c697cbfb89f67ef63388209260429834e9ca9e95157d114573
Dec 18 04:44:31.383 INFO running `"docker" "start" "-a" "c4bc0f7f1897c2c697cbfb89f67ef63388209260429834e9ca9e95157d114573"`
Dec 18 04:44:33.263 INFO [stderr]     Checking mio v0.6.14
Dec 18 04:44:33.263 INFO [stderr]     Checking num-iter v0.1.37
Dec 18 04:44:33.763 INFO [stderr]     Checking num v0.2.0
Dec 18 04:44:35.320 INFO [stderr]     Checking ws v0.7.6
Dec 18 04:44:37.204 INFO [stderr]     Checking persistence v0.1.0 (/opt/crater/workdir)
Dec 18 04:44:40.624 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.50s
Dec 18 04:44:41.530 INFO running `"docker" "inspect" "c4bc0f7f1897c2c697cbfb89f67ef63388209260429834e9ca9e95157d114573"`
Dec 18 04:44:41.912 INFO running `"docker" "rm" "-f" "c4bc0f7f1897c2c697cbfb89f67ef63388209260429834e9ca9e95157d114573"`
Dec 18 04:44:42.289 INFO [stdout] c4bc0f7f1897c2c697cbfb89f67ef63388209260429834e9ca9e95157d114573