Dec 19 21:54:23.421 INFO checking Shuternay/factorization_machine against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 21:54:23.421 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/Shuternay/factorization_machine:/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 21:54:23.880 INFO [stdout] f70f7d4f4f467eb78db65dee475346cee57e368fb2813b40d4e7b10e25eae2aa
Dec 19 21:54:23.888 INFO running `"docker" "start" "-a" "f70f7d4f4f467eb78db65dee475346cee57e368fb2813b40d4e7b10e25eae2aa"`
Dec 19 21:54:25.426 INFO [stderr]     Checking serde_json v1.0.17
Dec 19 21:54:25.432 INFO [stderr]     Checking csv v1.0.0-beta.5
Dec 19 21:54:28.045 INFO [stderr]     Checking factorization_machine v0.1.0 (/opt/crater/workdir)
Dec 19 21:54:30.912 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.62s
Dec 19 21:54:31.315 INFO running `"docker" "inspect" "f70f7d4f4f467eb78db65dee475346cee57e368fb2813b40d4e7b10e25eae2aa"`
Dec 19 21:54:31.495 INFO running `"docker" "rm" "-f" "f70f7d4f4f467eb78db65dee475346cee57e368fb2813b40d4e7b10e25eae2aa"`
Dec 19 21:54:31.736 INFO [stdout] f70f7d4f4f467eb78db65dee475346cee57e368fb2813b40d4e7b10e25eae2aa