Dec 02 13:11:31.584 INFO testing trait_tests-0.3.3 against 1.30.1 for beta-1.31-5
Dec 02 13:11:31.584 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 13:11:31.772 INFO [stdout] 0cfe5171b3bb92992a153de4531f8ddea03d863884cf15da28d536fcb430d220
Dec 02 13:11:31.773 INFO running `"docker" "start" "-a" "0cfe5171b3bb92992a153de4531f8ddea03d863884cf15da28d536fcb430d220"`
Dec 02 13:11:32.293 INFO [stderr] usermod: no changes
Dec 02 13:11:32.331 INFO [stderr]    Compiling syn v0.14.9
Dec 02 13:11:44.863 INFO [stderr]    Compiling trait_tests v0.3.3 (/source)
Dec 02 13:11:47.558 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 13:11:47.558 INFO [stderr]  --> src/lib.rs:1:1
Dec 02 13:11:47.558 INFO [stderr]   |
Dec 02 13:11:47.558 INFO [stderr] 1 | #![feature(proc_macro)] //proc_macro_lib
Dec 02 13:11:47.558 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 13:11:47.558 INFO [stderr] 
Dec 02 13:11:47.558 INFO [stderr] error: aborting due to previous error
Dec 02 13:11:47.558 INFO [stderr] 
Dec 02 13:11:47.560 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 13:11:47.568 INFO [stderr] error: Could not compile `trait_tests`.
Dec 02 13:11:47.568 INFO [stderr] 
Dec 02 13:11:47.568 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 13:11:47.568 INFO [stderr] su: No module specific data is present
Dec 02 13:11:47.872 INFO running `"docker" "inspect" "0cfe5171b3bb92992a153de4531f8ddea03d863884cf15da28d536fcb430d220"`
Dec 02 13:11:48.007 INFO running `"docker" "rm" "-f" "0cfe5171b3bb92992a153de4531f8ddea03d863884cf15da28d536fcb430d220"`
Dec 02 13:11:48.092 INFO [stdout] 0cfe5171b3bb92992a153de4531f8ddea03d863884cf15da28d536fcb430d220