Dec 19 10:39:51.355 INFO checking puzza007/ksero against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 10:39:51.355 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/puzza007/ksero:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 10:39:51.599 INFO [stdout] 4943d130ae6a28b61bf3906a2b7b0532513e43c85b831adb717563beadb12e49
Dec 19 10:39:51.601 INFO running `"docker" "start" "-a" "4943d130ae6a28b61bf3906a2b7b0532513e43c85b831adb717563beadb12e49"`
Dec 19 10:39:52.248 INFO [stderr]     Checking crossbeam-epoch v0.3.1
Dec 19 10:39:52.699 INFO [stderr]     Checking crossbeam-deque v0.2.0
Dec 19 10:39:52.953 INFO [stderr]     Checking rayon-core v1.4.1
Dec 19 10:39:53.596 INFO [stderr]     Checking rayon v1.0.3
Dec 19 10:39:57.253 INFO [stderr]     Checking ksero v0.1.0 (/opt/crater/workdir)
Dec 19 10:39:57.897 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.75s
Dec 19 10:39:58.498 INFO running `"docker" "inspect" "4943d130ae6a28b61bf3906a2b7b0532513e43c85b831adb717563beadb12e49"`
Dec 19 10:39:58.640 INFO running `"docker" "rm" "-f" "4943d130ae6a28b61bf3906a2b7b0532513e43c85b831adb717563beadb12e49"`
Dec 19 10:39:58.757 INFO [stdout] 4943d130ae6a28b61bf3906a2b7b0532513e43c85b831adb717563beadb12e49