Dec 19 21:21:05.209 INFO checking WeAreRust/protogen against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:21:05.210 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/WeAreRust/protogen:/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 21:21:05.718 INFO [stdout] c6a97bb3e3b1d28cd46beabd2a43ace87fb0d3e7e01cf4dc6610f7cba86ac039
Dec 19 21:21:05.720 INFO running `"docker" "start" "-a" "c6a97bb3e3b1d28cd46beabd2a43ace87fb0d3e7e01cf4dc6610f7cba86ac039"`
Dec 19 21:21:08.729 INFO [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
Dec 19 21:21:08.762 INFO [stderr]    Compiling protobuf v2.0.4
Dec 19 21:21:15.395 INFO [stderr]     Checking protogen v0.1.0 (/opt/crater/workdir)
Dec 19 21:21:16.130 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.44s
Dec 19 21:21:17.074 INFO running `"docker" "inspect" "c6a97bb3e3b1d28cd46beabd2a43ace87fb0d3e7e01cf4dc6610f7cba86ac039"`
Dec 19 21:21:17.328 INFO running `"docker" "rm" "-f" "c6a97bb3e3b1d28cd46beabd2a43ace87fb0d3e7e01cf4dc6610f7cba86ac039"`
Dec 19 21:21:17.680 INFO [stdout] c6a97bb3e3b1d28cd46beabd2a43ace87fb0d3e7e01cf4dc6610f7cba86ac039