Dec 03 03:10:00.548 INFO testing libcodejam-0.2.0 against 1.30.1 for beta-1.31-5
Dec 03 03:10:00.548 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 03:10:00.972 INFO [stdout] e3726244a617c0afcb74275153e90a02101bcf3c9e1467db2bbbf4f9d0e2e00d
Dec 03 03:10:00.974 INFO running `"docker" "start" "-a" "e3726244a617c0afcb74275153e90a02101bcf3c9e1467db2bbbf4f9d0e2e00d"`
Dec 03 03:10:02.167 INFO [stderr] usermod: no changes
Dec 03 03:10:02.307 INFO [stderr]    Compiling derive_more v0.11.0
Dec 03 03:10:10.084 INFO [stderr]    Compiling libcodejam v0.2.0 (/source)
Dec 03 03:10:10.104 INFO [stderr] error: Edition 2018 is unstable and only available for nightly builds of rustc.
Dec 03 03:10:10.104 INFO [stderr] 
Dec 03 03:10:10.110 INFO [stderr] error: Could not compile `libcodejam`.
Dec 03 03:10:10.111 INFO [stderr] 
Dec 03 03:10:10.111 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 03:10:10.111 INFO [stderr] su: No module specific data is present
Dec 03 03:10:10.477 INFO running `"docker" "inspect" "e3726244a617c0afcb74275153e90a02101bcf3c9e1467db2bbbf4f9d0e2e00d"`
Dec 03 03:10:10.564 INFO running `"docker" "rm" "-f" "e3726244a617c0afcb74275153e90a02101bcf3c9e1467db2bbbf4f9d0e2e00d"`
Dec 03 03:10:10.727 INFO [stdout] e3726244a617c0afcb74275153e90a02101bcf3c9e1467db2bbbf4f9d0e2e00d