Dec 18 08:19:09.982 INFO checking BurntSushi/vcr against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 08:19:09.983 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/gh/BurntSushi/vcr:/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 08:19:10.309 INFO [stdout] 1eaa293773769c80c68489dbc5af809ab4a9785109ba71e98d25ad3902ec2be1
Dec 18 08:19:10.314 INFO running `"docker" "start" "-a" "1eaa293773769c80c68489dbc5af809ab4a9785109ba71e98d25ad3902ec2be1"`
Dec 18 08:19:12.053 INFO [stderr]     Checking backtrace-sys v0.1.16
Dec 18 08:19:12.510 INFO [stderr]     Checking backtrace v0.3.5
Dec 18 08:19:13.011 INFO [stderr]     Checking failure v0.1.1
Dec 18 08:19:13.460 INFO [stderr]     Checking vcr v0.1.0 (/opt/crater/workdir)
Dec 18 08:19:14.862 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.94s
Dec 18 08:19:15.718 INFO running `"docker" "inspect" "1eaa293773769c80c68489dbc5af809ab4a9785109ba71e98d25ad3902ec2be1"`
Dec 18 08:19:16.020 INFO running `"docker" "rm" "-f" "1eaa293773769c80c68489dbc5af809ab4a9785109ba71e98d25ad3902ec2be1"`
Dec 18 08:19:16.300 INFO [stdout] 1eaa293773769c80c68489dbc5af809ab4a9785109ba71e98d25ad3902ec2be1