Dec 02 01:55:40.992 INFO testing aacunningham/sudoku_ai_rust against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 01:55:40.992 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 01:55:41.237 INFO [stdout] 36c7f396b428687ae2d8430f850bebf6a0413271f5e5ede4a2386cd68e01fc22
Dec 02 01:55:41.239 INFO running `"docker" "start" "-a" "36c7f396b428687ae2d8430f850bebf6a0413271f5e5ede4a2386cd68e01fc22"`
Dec 02 01:55:42.067 INFO [stderr] usermod: no changes
Dec 02 01:55:42.098 INFO [stderr]    Compiling sudoku_ai v0.1.0 (/source)
Dec 02 01:55:42.514 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 01:55:42.517 INFO [stderr]  --> src/lib.rs:1:1
Dec 02 01:55:42.517 INFO [stderr]   |
Dec 02 01:55:42.517 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 02 01:55:42.517 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 01:55:42.517 INFO [stderr] 
Dec 02 01:55:42.517 INFO [stderr] error: aborting due to previous error
Dec 02 01:55:42.517 INFO [stderr] 
Dec 02 01:55:42.517 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 01:55:42.517 INFO [stderr] error: Could not compile `sudoku_ai`.
Dec 02 01:55:42.517 INFO [stderr] 
Dec 02 01:55:42.517 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 01:55:42.518 INFO [stderr] su: No module specific data is present
Dec 02 01:55:43.329 INFO running `"docker" "inspect" "36c7f396b428687ae2d8430f850bebf6a0413271f5e5ede4a2386cd68e01fc22"`
Dec 02 01:55:43.583 INFO running `"docker" "rm" "-f" "36c7f396b428687ae2d8430f850bebf6a0413271f5e5ede4a2386cd68e01fc22"`
Dec 02 01:55:43.887 INFO [stdout] 36c7f396b428687ae2d8430f850bebf6a0413271f5e5ede4a2386cd68e01fc22
