Dec 17 19:37:38.269 INFO checking mikeycgto/ruru-rstring-encoding against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 19:37:38.270 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/mikeycgto/ruru-rstring-encoding:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:37:38.441 INFO [stdout] 40874dbccac7cb5d7ce4fb54473b5b25b981036c2aead20425a47d4cfe66f0f6
Dec 17 19:37:38.446 INFO running `"docker" "start" "-a" "40874dbccac7cb5d7ce4fb54473b5b25b981036c2aead20425a47d4cfe66f0f6"`
Dec 17 19:37:39.004 INFO [stderr]    Compiling ruby-sys v0.2.20
Dec 17 19:37:39.782 INFO [stderr]     Checking ruru v0.9.3
Dec 17 19:37:40.261 INFO [stderr]     Checking ruru-rstring-encoding v0.1.0 (/opt/crater/workdir)
Dec 17 19:37:40.450 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.46s
Dec 17 19:37:40.672 INFO running `"docker" "inspect" "40874dbccac7cb5d7ce4fb54473b5b25b981036c2aead20425a47d4cfe66f0f6"`
Dec 17 19:37:40.748 INFO running `"docker" "rm" "-f" "40874dbccac7cb5d7ce4fb54473b5b25b981036c2aead20425a47d4cfe66f0f6"`
Dec 17 19:37:40.822 INFO [stdout] 40874dbccac7cb5d7ce4fb54473b5b25b981036c2aead20425a47d4cfe66f0f6