Dec 02 18:32:40.199 INFO testing rustc-rayon-core-0.1.1 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 18:32:40.199 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt 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 18:32:40.595 INFO [stdout] 5db9531f8a161d9240c52159a8ae585c87e0e18574af7a4548111166132edec4
Dec 02 18:32:40.595 INFO running `"docker" "start" "-a" "5db9531f8a161d9240c52159a8ae585c87e0e18574af7a4548111166132edec4"`
Dec 02 18:32:41.867 INFO [stderr] usermod: no changes
Dec 02 18:32:41.971 INFO [stderr]    Compiling rustc-rayon-core v0.1.1 (/source)
Dec 02 18:32:45.799 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.90s
Dec 02 18:32:45.799 INFO [stderr] su: No module specific data is present
Dec 02 18:32:46.865 INFO running `"docker" "inspect" "5db9531f8a161d9240c52159a8ae585c87e0e18574af7a4548111166132edec4"`
Dec 02 18:32:47.117 INFO running `"docker" "rm" "-f" "5db9531f8a161d9240c52159a8ae585c87e0e18574af7a4548111166132edec4"`
Dec 02 18:32:47.415 INFO [stdout] 5db9531f8a161d9240c52159a8ae585c87e0e18574af7a4548111166132edec4
Dec 02 18:32:47.421 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen --no-run" "-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 18:32:47.981 INFO [stdout] 67a484d93c5cff2b820f4cbd9c6d44a6058dd45ee8b779eb8e06ba87b7b3b13e
Dec 02 18:32:47.985 INFO running `"docker" "start" "-a" "67a484d93c5cff2b820f4cbd9c6d44a6058dd45ee8b779eb8e06ba87b7b3b13e"`
Dec 02 18:32:49.512 INFO [stderr] usermod: no changes
Dec 02 18:32:49.627 INFO [stderr]    Compiling rustc-rayon-core v0.1.1 (/source)
Dec 02 18:32:50.841 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 18:32:50.841 INFO [stderr]   --> src/lib.rs:23:19
Dec 02 18:32:50.841 INFO [stderr]    |
Dec 02 18:32:50.842 INFO [stderr] 23 | #![cfg_attr(test, feature(conservative_impl_trait))]
Dec 02 18:32:50.842 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 18:32:50.842 INFO [stderr] 
Dec 02 18:32:50.851 INFO [stderr] error: aborting due to previous error
Dec 02 18:32:50.851 INFO [stderr] 
Dec 02 18:32:50.851 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 18:32:50.859 INFO [stderr] error: Could not compile `rustc-rayon-core`.
Dec 02 18:32:50.859 INFO [stderr] 
Dec 02 18:32:50.859 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 18:32:50.861 INFO [stderr] su: No module specific data is present
Dec 02 18:32:51.137 INFO running `"docker" "inspect" "67a484d93c5cff2b820f4cbd9c6d44a6058dd45ee8b779eb8e06ba87b7b3b13e"`
Dec 02 18:32:51.251 INFO running `"docker" "rm" "-f" "67a484d93c5cff2b820f4cbd9c6d44a6058dd45ee8b779eb8e06ba87b7b3b13e"`
Dec 02 18:32:51.503 INFO [stdout] 67a484d93c5cff2b820f4cbd9c6d44a6058dd45ee8b779eb8e06ba87b7b3b13e