Dec 02 07:57:22.488 INFO testing Enigmatrix/minesweeper-rust against 1.30.1 for beta-1.31-5
Dec 02 07:57:22.488 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 07:57:22.960 INFO [stdout] 91ff6cdf815b46cb8be6d873e9c8cd39d19ef8a2420940bb0fc486114e926ec8
Dec 02 07:57:22.964 INFO running `"docker" "start" "-a" "91ff6cdf815b46cb8be6d873e9c8cd39d19ef8a2420940bb0fc486114e926ec8"`
Dec 02 07:57:24.102 INFO [stderr] usermod: no changes
Dec 02 07:57:24.351 INFO [stderr]    Compiling rand v0.4.1
Dec 02 07:57:24.359 INFO [stderr]    Compiling pistoncore-input v0.20.0
Dec 02 07:57:24.359 INFO [stderr]    Compiling image v0.18.0
Dec 02 07:57:24.359 INFO [stderr]    Compiling winit v0.8.3
Dec 02 07:57:34.079 INFO [stderr]    Compiling pistoncore-window v0.30.0
Dec 02 07:57:34.307 INFO [stderr]    Compiling glutin v0.10.1
Dec 02 07:57:36.422 INFO [stderr]    Compiling pistoncore-event_loop v0.35.0
Dec 02 07:57:38.963 INFO [stderr]    Compiling piston v0.35.0
Dec 02 07:57:41.379 INFO [stderr]    Compiling pistoncore-glutin_window v0.43.0
Dec 02 07:57:53.175 INFO [stderr]    Compiling piston2d-opengl_graphics v0.50.0
Dec 02 07:57:57.963 INFO [stderr]    Compiling minesweeper-rust v0.1.0 (/source)
Dec 02 07:58:02.007 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 07:58:02.007 INFO [stderr]  --> src/main.rs:1:1
Dec 02 07:58:02.008 INFO [stderr]   |
Dec 02 07:58:02.008 INFO [stderr] 1 | #![feature(slice_patterns)]
Dec 02 07:58:02.008 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 07:58:02.008 INFO [stderr] 
Dec 02 07:58:02.009 INFO [stderr] error: aborting due to previous error
Dec 02 07:58:02.009 INFO [stderr] 
Dec 02 07:58:02.009 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 07:58:02.029 INFO [stderr] error: Could not compile `minesweeper-rust`.
Dec 02 07:58:02.029 INFO [stderr] 
Dec 02 07:58:02.029 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 07:58:02.031 INFO [stderr] su: No module specific data is present
Dec 02 07:58:03.885 INFO running `"docker" "inspect" "91ff6cdf815b46cb8be6d873e9c8cd39d19ef8a2420940bb0fc486114e926ec8"`
Dec 02 07:58:04.289 INFO running `"docker" "rm" "-f" "91ff6cdf815b46cb8be6d873e9c8cd39d19ef8a2420940bb0fc486114e926ec8"`
Dec 02 07:58:04.663 INFO [stdout] 91ff6cdf815b46cb8be6d873e9c8cd39d19ef8a2420940bb0fc486114e926ec8