Dec 19 12:43:54.439 INFO checking mfs/dupr against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 12:43:54.439 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/mfs/dupr:/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 12:43:54.857 INFO [stdout] f0ce76afe07306fd83eaef9066add3dcdc1e995ef74a2f4de553f77ad22d8bfa
Dec 19 12:43:54.859 INFO running `"docker" "start" "-a" "f0ce76afe07306fd83eaef9066add3dcdc1e995ef74a2f4de553f77ad22d8bfa"`
Dec 19 12:43:56.537 INFO [stderr]     Checking twox-hash v1.1.0
Dec 19 12:43:56.537 INFO [stderr]     Checking clap v2.26.2
Dec 19 12:44:03.129 INFO [stderr]     Checking dupr v0.1.0 (/opt/crater/workdir)
Dec 19 12:44:03.522 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.07s
Dec 19 12:44:03.950 INFO running `"docker" "inspect" "f0ce76afe07306fd83eaef9066add3dcdc1e995ef74a2f4de553f77ad22d8bfa"`
Dec 19 12:44:04.072 INFO running `"docker" "rm" "-f" "f0ce76afe07306fd83eaef9066add3dcdc1e995ef74a2f4de553f77ad22d8bfa"`
Dec 19 12:44:04.173 INFO [stdout] f0ce76afe07306fd83eaef9066add3dcdc1e995ef74a2f4de553f77ad22d8bfa