Dec 03 02:03:41.286 INFO testing mayer_multiple-0.0.1 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 02:03:41.286 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 03 02:03:41.527 INFO [stdout] 8ac80a52286429a99954b3cf8ccfe552b41257fd87bce3cb98d1e148738d43a8
Dec 03 02:03:41.529 INFO running `"docker" "start" "-a" "8ac80a52286429a99954b3cf8ccfe552b41257fd87bce3cb98d1e148738d43a8"`
Dec 03 02:03:42.158 INFO [stderr] usermod: no changes
Dec 03 02:03:42.383 INFO [stderr]    Compiling hyper v0.7.2
Dec 03 02:03:53.699 INFO [stderr]    Compiling mayer_multiple v0.0.1 (/source)
Dec 03 02:03:57.223 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 02:03:57.223 INFO [stderr]  --> src/main.rs:1:1
Dec 03 02:03:57.223 INFO [stderr]   |
Dec 03 02:03:57.223 INFO [stderr] 1 | #![feature(rustc_private)]
Dec 03 02:03:57.223 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 02:03:57.223 INFO [stderr] 
Dec 03 02:03:57.231 INFO [stderr] error: aborting due to previous error
Dec 03 02:03:57.231 INFO [stderr] 
Dec 03 02:03:57.231 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 02:03:57.239 INFO [stderr] error: Could not compile `mayer_multiple`.
Dec 03 02:03:57.239 INFO [stderr] 
Dec 03 02:03:57.239 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 02:03:57.240 INFO [stderr] su: No module specific data is present
Dec 03 02:03:57.999 INFO running `"docker" "inspect" "8ac80a52286429a99954b3cf8ccfe552b41257fd87bce3cb98d1e148738d43a8"`
Dec 03 02:03:58.419 INFO running `"docker" "rm" "-f" "8ac80a52286429a99954b3cf8ccfe552b41257fd87bce3cb98d1e148738d43a8"`
Dec 03 02:03:58.747 INFO [stdout] 8ac80a52286429a99954b3cf8ccfe552b41257fd87bce3cb98d1e148738d43a8