Dec 02 11:02:47.253 INFO testing whiteout-0.1.0 against 1.30.1 for beta-1.31-5
Dec 02 11:02:47.253 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 11:02:47.707 INFO [stdout] a568a82e3068f27f70a8957f80b10f2dab5e2954ed396996bbcf9d4ae40163f0
Dec 02 11:02:47.709 INFO running `"docker" "start" "-a" "a568a82e3068f27f70a8957f80b10f2dab5e2954ed396996bbcf9d4ae40163f0"`
Dec 02 11:02:48.737 INFO [stderr] usermod: no changes
Dec 02 11:02:48.807 INFO [stderr]    Compiling whiteout v0.1.0 (/source)
Dec 02 11:02:49.350 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 11:02:49.350 INFO [stderr]   --> src/lib.rs:58:1
Dec 02 11:02:49.350 INFO [stderr]    |
Dec 02 11:02:49.350 INFO [stderr] 58 | #![feature(conservative_impl_trait)]
Dec 02 11:02:49.350 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 11:02:49.350 INFO [stderr] 
Dec 02 11:02:49.350 INFO [stderr] error: aborting due to previous error
Dec 02 11:02:49.350 INFO [stderr] 
Dec 02 11:02:49.350 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 11:02:49.352 INFO [stderr] error: Could not compile `whiteout`.
Dec 02 11:02:49.352 INFO [stderr] 
Dec 02 11:02:49.352 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 11:02:49.353 INFO [stderr] su: No module specific data is present
Dec 02 11:02:49.865 INFO running `"docker" "inspect" "a568a82e3068f27f70a8957f80b10f2dab5e2954ed396996bbcf9d4ae40163f0"`
Dec 02 11:02:50.102 INFO running `"docker" "rm" "-f" "a568a82e3068f27f70a8957f80b10f2dab5e2954ed396996bbcf9d4ae40163f0"`
Dec 02 11:02:50.353 INFO [stdout] a568a82e3068f27f70a8957f80b10f2dab5e2954ed396996bbcf9d4ae40163f0