Dec 19 20:15:04.000 INFO checking asymmetric/rusty-chain against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 20:15:04.000 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/asymmetric/rusty-chain:/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 20:15:04.244 INFO [stdout] 1b5708be4ce582e34aee2ada7b5992e4d5265fd16668d6185593f7f29a75a7e8
Dec 19 20:15:04.251 INFO running `"docker" "start" "-a" "1b5708be4ce582e34aee2ada7b5992e4d5265fd16668d6185593f7f29a75a7e8"`
Dec 19 20:15:04.960 INFO [stderr]     Checking num-bigint v0.1.41
Dec 19 20:15:04.964 INFO [stderr]     Checking clap v2.29.4
Dec 19 20:15:04.964 INFO [stderr]     Checking rust-crypto v0.2.36
Dec 19 20:15:09.892 INFO [stderr]     Checking rusty-chain v0.1.0 (/opt/crater/workdir)
Dec 19 20:15:10.684 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.82s
Dec 19 20:15:11.094 INFO running `"docker" "inspect" "1b5708be4ce582e34aee2ada7b5992e4d5265fd16668d6185593f7f29a75a7e8"`
Dec 19 20:15:11.404 INFO running `"docker" "rm" "-f" "1b5708be4ce582e34aee2ada7b5992e4d5265fd16668d6185593f7f29a75a7e8"`
Dec 19 20:15:11.596 INFO [stdout] 1b5708be4ce582e34aee2ada7b5992e4d5265fd16668d6185593f7f29a75a7e8