Dec 19 13:21:03.435 INFO checking luxn/flut against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 13:21:03.435 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/luxn/flut:/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 13:21:03.828 INFO [stdout] e7277ab938349cf7b4cd78349214d633c10ba67d39f66def043929fcedb972dc
Dec 19 13:21:03.834 INFO running `"docker" "start" "-a" "e7277ab938349cf7b4cd78349214d633c10ba67d39f66def043929fcedb972dc"`
Dec 19 13:21:05.508 INFO [stderr]     Checking half v1.3.0
Dec 19 13:21:05.508 INFO [stderr]    Compiling syn v0.15.21
Dec 19 13:21:05.956 INFO [stderr]     Checking serde_cbor v0.9.0
Dec 19 13:21:16.057 INFO [stderr]    Compiling serde_derive v1.0.80
Dec 19 13:21:30.142 INFO [stderr]     Checking flut v0.1.0 (/opt/crater/workdir)
Dec 19 13:21:30.935 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.54s
Dec 19 13:21:32.115 INFO running `"docker" "inspect" "e7277ab938349cf7b4cd78349214d633c10ba67d39f66def043929fcedb972dc"`
Dec 19 13:21:32.358 INFO running `"docker" "rm" "-f" "e7277ab938349cf7b4cd78349214d633c10ba67d39f66def043929fcedb972dc"`
Dec 19 13:21:32.728 INFO [stdout] e7277ab938349cf7b4cd78349214d633c10ba67d39f66def043929fcedb972dc