Dec 02 13:11:31.508 INFO testing trait_tests-0.3.3 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 13:11:31.509 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 13:11:31.697 INFO [stdout] 3ceabd3a436c22a37204c9a1ec37d346f0ce8a7c948e0832467bb3bd845a6134
Dec 02 13:11:31.699 INFO running `"docker" "start" "-a" "3ceabd3a436c22a37204c9a1ec37d346f0ce8a7c948e0832467bb3bd845a6134"`
Dec 02 13:11:32.270 INFO [stderr] usermod: no changes
Dec 02 13:11:32.299 INFO [stderr]    Compiling proc-macro2 v0.4.24
Dec 02 13:11:37.657 INFO [stderr]    Compiling quote v0.6.10
Dec 02 13:11:41.735 INFO [stderr]    Compiling syn v0.14.9
Dec 02 13:11:53.684 INFO [stderr]    Compiling trait_tests v0.3.3 (/source)
Dec 02 13:11:56.236 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 13:11:56.236 INFO [stderr]  --> src/lib.rs:1:1
Dec 02 13:11:56.236 INFO [stderr]   |
Dec 02 13:11:56.236 INFO [stderr] 1 | #![feature(proc_macro)] //proc_macro_lib
Dec 02 13:11:56.236 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 13:11:56.236 INFO [stderr] 
Dec 02 13:11:56.240 INFO [stderr] error: aborting due to previous error
Dec 02 13:11:56.241 INFO [stderr] 
Dec 02 13:11:56.241 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 13:11:56.247 INFO [stderr] error: Could not compile `trait_tests`.
Dec 02 13:11:56.247 INFO [stderr] 
Dec 02 13:11:56.247 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 13:11:56.248 INFO [stderr] su: No module specific data is present
Dec 02 13:11:56.605 INFO running `"docker" "inspect" "3ceabd3a436c22a37204c9a1ec37d346f0ce8a7c948e0832467bb3bd845a6134"`
Dec 02 13:11:56.749 INFO running `"docker" "rm" "-f" "3ceabd3a436c22a37204c9a1ec37d346f0ce8a7c948e0832467bb3bd845a6134"`
Dec 02 13:11:56.857 INFO [stdout] 3ceabd3a436c22a37204c9a1ec37d346f0ce8a7c948e0832467bb3bd845a6134