Dec 19 09:39:17.129 INFO checking rustyhorde/nailgun against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 09:39:17.129 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/rustyhorde/nailgun:/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 09:39:17.611 INFO [stdout] aa12f2ed27d783967e9f5b604718a2418feb32c48e37b3a1d55b378322b39ade
Dec 19 09:39:17.614 INFO running `"docker" "start" "-a" "aa12f2ed27d783967e9f5b604718a2418feb32c48e37b3a1d55b378322b39ade"`
Dec 19 09:39:19.920 INFO [stderr] error: failed to update path override `/opt/crater/workdir/mio` (defined in `/opt/crater/workdir/.cargo/config`)
Dec 19 09:39:19.920 INFO [stderr] 
Dec 19 09:39:19.920 INFO [stderr] Caused by:
Dec 19 09:39:19.920 INFO [stderr]   Could not find Cargo.toml in `/opt/crater/workdir/mio`
Dec 19 09:39:20.852 INFO running `"docker" "inspect" "aa12f2ed27d783967e9f5b604718a2418feb32c48e37b3a1d55b378322b39ade"`
Dec 19 09:39:21.142 INFO running `"docker" "rm" "-f" "aa12f2ed27d783967e9f5b604718a2418feb32c48e37b3a1d55b378322b39ade"`
Dec 19 09:39:21.479 INFO [stdout] aa12f2ed27d783967e9f5b604718a2418feb32c48e37b3a1d55b378322b39ade