Dec 03 04:53:01.779 INFO testing incr-0.2.0 against 1.30.1 for beta-1.31-5
Dec 03 04:53:01.779 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-6/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 04:53:01.932 INFO [stdout] e158c7d3c13efda233744ac25cf90bd14cc3c339605cd7e7a43343b8b5d56d7b
Dec 03 04:53:01.934 INFO running `"docker" "start" "-a" "e158c7d3c13efda233744ac25cf90bd14cc3c339605cd7e7a43343b8b5d56d7b"`
Dec 03 04:53:02.315 INFO [stderr] usermod: no changes
Dec 03 04:53:02.348 INFO [stderr]    Compiling incr v0.2.0 (/source)
Dec 03 04:53:02.876 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 04:53:02.876 INFO [stderr]   --> src/lib.rs:31:34
Dec 03 04:53:02.876 INFO [stderr]    |
Dec 03 04:53:02.876 INFO [stderr] 31 | #![cfg_attr(feature = "nightly", feature(integer_atomics, test))]
Dec 03 04:53:02.876 INFO [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 04:53:02.876 INFO [stderr] 
Dec 03 04:53:02.877 INFO [stderr] error: aborting due to previous error
Dec 03 04:53:02.877 INFO [stderr] 
Dec 03 04:53:02.877 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 04:53:02.887 INFO [stderr] error: Could not compile `incr`.
Dec 03 04:53:02.887 INFO [stderr] 
Dec 03 04:53:02.887 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 04:53:02.887 INFO [stderr] su: No module specific data is present
Dec 03 04:53:03.176 INFO running `"docker" "inspect" "e158c7d3c13efda233744ac25cf90bd14cc3c339605cd7e7a43343b8b5d56d7b"`
Dec 03 04:53:03.253 INFO running `"docker" "rm" "-f" "e158c7d3c13efda233744ac25cf90bd14cc3c339605cd7e7a43343b8b5d56d7b"`
Dec 03 04:53:03.323 INFO [stdout] e158c7d3c13efda233744ac25cf90bd14cc3c339605cd7e7a43343b8b5d56d7b