Dec 02 19:33:41.580 INFO testing rstd-0.3.0 against 1.30.1 for beta-1.31-5
Dec 02 19:33:41.580 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-6/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 02 19:33:42.001 INFO [stdout] 60c8ef9a6d9a458473e9ff951be4468421f5cc4b5e1502cd4a4348276292ba0e
Dec 02 19:33:42.004 INFO running `"docker" "start" "-a" "60c8ef9a6d9a458473e9ff951be4468421f5cc4b5e1502cd4a4348276292ba0e"`
Dec 02 19:33:43.485 INFO [stderr] usermod: no changes
Dec 02 19:33:43.591 INFO [stderr]    Compiling promptly v0.1.5
Dec 02 19:33:45.395 INFO [stderr]    Compiling rstd v0.3.0 (/source)
Dec 02 19:33:45.447 INFO [stderr] error: Edition 2018 is unstable and only available for nightly builds of rustc.
Dec 02 19:33:45.447 INFO [stderr] 
Dec 02 19:33:45.462 INFO [stderr] error: Could not compile `rstd`.
Dec 02 19:33:45.462 INFO [stderr] 
Dec 02 19:33:45.462 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 19:33:45.462 INFO [stderr] su: No module specific data is present
Dec 02 19:33:46.237 INFO running `"docker" "inspect" "60c8ef9a6d9a458473e9ff951be4468421f5cc4b5e1502cd4a4348276292ba0e"`
Dec 02 19:33:46.603 INFO running `"docker" "rm" "-f" "60c8ef9a6d9a458473e9ff951be4468421f5cc4b5e1502cd4a4348276292ba0e"`
Dec 02 19:33:46.899 INFO [stdout] 60c8ef9a6d9a458473e9ff951be4468421f5cc4b5e1502cd4a4348276292ba0e