Dec 05 08:49:58.240 INFO checking prost-codegen-0.1.0 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 08:49:58.240 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 08:49:58.745 INFO [stdout] 643affe32d0375377140887299ac84bf6ed2340790116ceb43f0e229ef00c1c2
Dec 05 08:49:58.747 INFO running `"docker" "start" "-a" "643affe32d0375377140887299ac84bf6ed2340790116ceb43f0e229ef00c1c2"`
Dec 05 08:50:00.119 INFO [stderr] usermod: no changes
Dec 05 08:50:00.299 INFO [stderr]     Checking multimap v0.3.0
Dec 05 08:50:00.299 INFO [stderr]    Compiling itertools v0.6.5
Dec 05 08:50:00.307 INFO [stderr]    Compiling error-chain v0.10.0
Dec 05 08:50:00.307 INFO [stderr]     Checking prost v0.1.0
Dec 05 08:50:04.576 INFO [stderr]    Compiling prost-derive v0.1.0
Dec 05 08:50:08.985 INFO [stderr]     Checking prost-codegen v0.1.0 (/source)
Dec 05 08:50:16.463 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.30s
Dec 05 08:50:16.471 INFO [stderr] su: No module specific data is present
Dec 05 08:50:17.567 INFO running `"docker" "inspect" "643affe32d0375377140887299ac84bf6ed2340790116ceb43f0e229ef00c1c2"`
Dec 05 08:50:17.815 INFO running `"docker" "rm" "-f" "643affe32d0375377140887299ac84bf6ed2340790116ceb43f0e229ef00c1c2"`
Dec 05 08:50:18.035 INFO [stdout] 643affe32d0375377140887299ac84bf6ed2340790116ceb43f0e229ef00c1c2