Dec 17 19:25:26.397 INFO checking monjohn/prufen against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 19:25:26.398 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/monjohn/prufen:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:25:26.635 INFO [stdout] 726fa2896446327866e79bdc039633c85235d3ca5ee4d83cf6b29cb6c8309fdb
Dec 17 19:25:26.636 INFO running `"docker" "start" "-a" "726fa2896446327866e79bdc039633c85235d3ca5ee4d83cf6b29cb6c8309fdb"`
Dec 17 19:25:27.350 INFO [stderr]     Checking csv-core v0.1.4
Dec 17 19:25:27.809 INFO [stderr]     Checking csv v1.0.0-beta.5
Dec 17 19:25:28.948 INFO [stderr]     Checking prufen v0.1.2 (/opt/crater/workdir)
Dec 17 19:25:29.597 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.31s
Dec 17 19:25:30.058 INFO running `"docker" "inspect" "726fa2896446327866e79bdc039633c85235d3ca5ee4d83cf6b29cb6c8309fdb"`
Dec 17 19:25:30.176 INFO running `"docker" "rm" "-f" "726fa2896446327866e79bdc039633c85235d3ca5ee4d83cf6b29cb6c8309fdb"`
Dec 17 19:25:30.380 INFO [stdout] 726fa2896446327866e79bdc039633c85235d3ca5ee4d83cf6b29cb6c8309fdb