Dec 19 13:01:43.096 INFO checking mateon1/reduce-runner against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 13:01:43.096 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/mateon1/reduce-runner:/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 13:01:43.569 INFO [stdout] dcf5d2cdfe0e771eda9ef18cb8115c0876ffa0aeb4b285930670c89d67237ff6
Dec 19 13:01:43.571 INFO running `"docker" "start" "-a" "dcf5d2cdfe0e771eda9ef18cb8115c0876ffa0aeb4b285930670c89d67237ff6"`
Dec 19 13:01:46.436 INFO [stderr]     Checking fs_extra v1.0.0
Dec 19 13:01:46.436 INFO [stderr]     Checking tempdir v0.3.5
Dec 19 13:01:46.440 INFO [stderr]     Checking clap v2.26.2
Dec 19 13:01:53.720 INFO [stderr]     Checking reduce-runner v0.1.0 (/opt/crater/workdir)
Dec 19 13:01:54.208 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.85s
Dec 19 13:01:55.384 INFO running `"docker" "inspect" "dcf5d2cdfe0e771eda9ef18cb8115c0876ffa0aeb4b285930670c89d67237ff6"`
Dec 19 13:01:55.728 INFO running `"docker" "rm" "-f" "dcf5d2cdfe0e771eda9ef18cb8115c0876ffa0aeb4b285930670c89d67237ff6"`
Dec 19 13:01:56.052 INFO [stdout] dcf5d2cdfe0e771eda9ef18cb8115c0876ffa0aeb4b285930670c89d67237ff6