Dec 04 21:38:00.976 INFO checking bon-chi/tower_of_hanoi_in_rust against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 21:38:00.976 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 21:38:01.403 INFO [stdout] 0d18c6710e16f3e5b912c7f77e1649bbeed73c5f6778074a734f4b219418b82f
Dec 04 21:38:01.405 INFO running `"docker" "start" "-a" "0d18c6710e16f3e5b912c7f77e1649bbeed73c5f6778074a734f4b219418b82f"`
Dec 04 21:38:03.018 INFO [stderr] usermod: no changes
Dec 04 21:38:03.111 INFO [stderr]     Checking tower_of_hanoi_in_rust v0.1.0 (/source)
Dec 04 21:38:03.889 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:38:03.889 INFO [stderr]   --> src/main.rs:22:9
Dec 04 21:38:03.889 INFO [stderr]    |
Dec 04 21:38:03.889 INFO [stderr] 22 |     let mut new_stream: &mut Vec<i32> = &mut hanoi_stream(n - 1, h1);
Dec 04 21:38:03.889 INFO [stderr]    |         ----^^^^^^^^^^
Dec 04 21:38:03.889 INFO [stderr]    |         |
Dec 04 21:38:03.889 INFO [stderr]    |         help: remove this `mut`
Dec 04 21:38:03.889 INFO [stderr]    |
Dec 04 21:38:03.889 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 21:38:03.889 INFO [stderr] 
Dec 04 21:38:04.048 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:38:04.048 INFO [stderr]   --> src/main.rs:22:9
Dec 04 21:38:04.048 INFO [stderr]    |
Dec 04 21:38:04.048 INFO [stderr] 22 |     let mut new_stream: &mut Vec<i32> = &mut hanoi_stream(n - 1, h1);
Dec 04 21:38:04.048 INFO [stderr]    |         ----^^^^^^^^^^
Dec 04 21:38:04.048 INFO [stderr]    |         |
Dec 04 21:38:04.048 INFO [stderr]    |         help: remove this `mut`
Dec 04 21:38:04.048 INFO [stderr]    |
Dec 04 21:38:04.048 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 21:38:04.048 INFO [stderr] 
Dec 04 21:38:04.087 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
Dec 04 21:38:04.090 INFO [stderr] su: No module specific data is present
Dec 04 21:38:05.137 INFO running `"docker" "inspect" "0d18c6710e16f3e5b912c7f77e1649bbeed73c5f6778074a734f4b219418b82f"`
Dec 04 21:38:05.477 INFO running `"docker" "rm" "-f" "0d18c6710e16f3e5b912c7f77e1649bbeed73c5f6778074a734f4b219418b82f"`
Dec 04 21:38:05.835 INFO [stdout] 0d18c6710e16f3e5b912c7f77e1649bbeed73c5f6778074a734f4b219418b82f