Dec 03 01:14:38.952 INFO testing mpsc_requests-0.2.0 against 1.30.1 for beta-1.31-5
Dec 03 01:14:38.952 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/1.30.1:/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 +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 03 01:14:39.457 INFO [stdout] 1c69f5fc39cfffe741449d8d1585444344a91ccabb7d7a5f1bf54999ecd3e531
Dec 03 01:14:39.459 INFO running `"docker" "start" "-a" "1c69f5fc39cfffe741449d8d1585444344a91ccabb7d7a5f1bf54999ecd3e531"`
Dec 03 01:14:40.496 INFO [stderr] usermod: no changes
Dec 03 01:14:40.537 INFO [stderr]    Compiling mpsc_requests v0.2.0 (/source)
Dec 03 01:14:40.611 INFO [stderr] error: Edition 2018 is unstable and only available for nightly builds of rustc.
Dec 03 01:14:40.611 INFO [stderr] 
Dec 03 01:14:40.612 INFO [stderr] error: Could not compile `mpsc_requests`.
Dec 03 01:14:40.612 INFO [stderr] 
Dec 03 01:14:40.612 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 01:14:40.615 INFO [stderr] su: No module specific data is present
Dec 03 01:14:41.276 INFO running `"docker" "inspect" "1c69f5fc39cfffe741449d8d1585444344a91ccabb7d7a5f1bf54999ecd3e531"`
Dec 03 01:14:41.511 INFO running `"docker" "rm" "-f" "1c69f5fc39cfffe741449d8d1585444344a91ccabb7d7a5f1bf54999ecd3e531"`
Dec 03 01:14:41.800 INFO [stdout] 1c69f5fc39cfffe741449d8d1585444344a91ccabb7d7a5f1bf54999ecd3e531