Nov 30 19:26:17.385 INFO testing yymm/rust-exercise against 1.30.1 for beta-1.31-5
Nov 30 19:26:17.387 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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"`
Nov 30 19:26:17.879 INFO [stdout] d030a2ab08fce9c5f5d86e2d09ee3dff510028c7d791055cabbff3208f8536b1
Nov 30 19:26:17.885 INFO running `"docker" "start" "-a" "d030a2ab08fce9c5f5d86e2d09ee3dff510028c7d791055cabbff3208f8536b1"`
Nov 30 19:26:18.896 INFO [stderr] usermod: no changes
Nov 30 19:26:18.952 INFO [stderr]    Compiling exercise v0.1.0 (/source)
Nov 30 19:26:19.071 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Nov 30 19:26:19.071 INFO [stderr]  --> src/lib.rs:1:1
Nov 30 19:26:19.071 INFO [stderr]   |
Nov 30 19:26:19.071 INFO [stderr] 1 | #![feature(test)]
Nov 30 19:26:19.071 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Nov 30 19:26:19.071 INFO [stderr] 
Nov 30 19:26:19.071 INFO [stderr] error: aborting due to previous error
Nov 30 19:26:19.071 INFO [stderr] 
Nov 30 19:26:19.071 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Nov 30 19:26:19.087 INFO [stderr] error: Could not compile `exercise`.
Nov 30 19:26:19.087 INFO [stderr] 
Nov 30 19:26:19.088 INFO [stderr] To learn more, run the command again with --verbose.
Nov 30 19:26:19.089 INFO [stderr] su: No module specific data is present
Nov 30 19:26:19.914 INFO running `"docker" "inspect" "d030a2ab08fce9c5f5d86e2d09ee3dff510028c7d791055cabbff3208f8536b1"`
Nov 30 19:26:20.157 INFO running `"docker" "rm" "-f" "d030a2ab08fce9c5f5d86e2d09ee3dff510028c7d791055cabbff3208f8536b1"`
Nov 30 19:26:20.399 INFO [stdout] d030a2ab08fce9c5f5d86e2d09ee3dff510028c7d791055cabbff3208f8536b1
