Dec 19 17:42:07.427 INFO checking dustMason/fnv_hash against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 17:42:07.428 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/dustMason/fnv_hash:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 17:42:07.894 INFO [stdout] 2cf4e25ee2fa1d9169e974495fb43b71c68b7b082037337145f3e27f4aa4bbd4
Dec 19 17:42:07.898 INFO running `"docker" "start" "-a" "2cf4e25ee2fa1d9169e974495fb43b71c68b7b082037337145f3e27f4aa4bbd4"`
Dec 19 17:42:08.913 INFO [stderr]    Compiling libcruby-sys v0.7.3
Dec 19 17:42:09.884 INFO [stderr]     Checking helix v0.7.3
Dec 19 17:42:10.250 INFO [stderr]     Checking fnv_hash v0.1.0 (/opt/crater/workdir)
Dec 19 17:42:10.547 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
Dec 19 17:42:10.766 INFO running `"docker" "inspect" "2cf4e25ee2fa1d9169e974495fb43b71c68b7b082037337145f3e27f4aa4bbd4"`
Dec 19 17:42:10.854 INFO running `"docker" "rm" "-f" "2cf4e25ee2fa1d9169e974495fb43b71c68b7b082037337145f3e27f4aa4bbd4"`
Dec 19 17:42:10.944 INFO [stdout] 2cf4e25ee2fa1d9169e974495fb43b71c68b7b082037337145f3e27f4aa4bbd4