Dec 04 07:53:07.476 INFO checking underflowed/text-adventure-game-in-rust against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 07:53:07.476 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 07:53:07.847 INFO [stdout] cc731052251e87977439beb2f5adc5da533b002acd993c36e49a1a6dba8e12ab
Dec 04 07:53:07.853 INFO running `"docker" "start" "-a" "cc731052251e87977439beb2f5adc5da533b002acd993c36e49a1a6dba8e12ab"`
Dec 04 07:53:08.983 INFO [stderr] usermod: no changes
Dec 04 07:53:09.047 INFO [stderr]     Checking text_adventure v0.1.0 (/source)
Dec 04 07:53:09.358 INFO [stderr] warning: method is never used: `to_string`
Dec 04 07:53:09.358 INFO [stderr]   --> src/main.rs:43:5
Dec 04 07:53:09.358 INFO [stderr]    |
Dec 04 07:53:09.358 INFO [stderr] 43 |     fn to_string(&self) -> &str {
Dec 04 07:53:09.358 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 07:53:09.358 INFO [stderr]    |
Dec 04 07:53:09.358 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 07:53:09.358 INFO [stderr] 
Dec 04 07:53:09.358 INFO [stderr] warning: variant is never constructed: `MoveUp`
Dec 04 07:53:09.358 INFO [stderr]   --> src/main.rs:58:5
Dec 04 07:53:09.359 INFO [stderr]    |
Dec 04 07:53:09.359 INFO [stderr] 58 |     MoveUp,
Dec 04 07:53:09.359 INFO [stderr]    |     ^^^^^^
Dec 04 07:53:09.359 INFO [stderr] 
Dec 04 07:53:09.359 INFO [stderr] warning: variant is never constructed: `MoveDown`
Dec 04 07:53:09.359 INFO [stderr]   --> src/main.rs:60:5
Dec 04 07:53:09.359 INFO [stderr]    |
Dec 04 07:53:09.359 INFO [stderr] 60 |     MoveDown,
Dec 04 07:53:09.359 INFO [stderr]    |     ^^^^^^^^
Dec 04 07:53:09.359 INFO [stderr] 
Dec 04 07:53:09.409 INFO [stderr] warning: method is never used: `to_string`
Dec 04 07:53:09.409 INFO [stderr]   --> src/main.rs:43:5
Dec 04 07:53:09.409 INFO [stderr]    |
Dec 04 07:53:09.452 INFO [stderr] 43 |     fn to_string(&self) -> &str {
Dec 04 07:53:09.452 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 07:53:09.453 INFO [stderr]    |
Dec 04 07:53:09.453 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 07:53:09.453 INFO [stderr] 
Dec 04 07:53:09.453 INFO [stderr] warning: variant is never constructed: `MoveUp`
Dec 04 07:53:09.453 INFO [stderr]   --> src/main.rs:58:5
Dec 04 07:53:09.453 INFO [stderr]    |
Dec 04 07:53:09.453 INFO [stderr] 58 |     MoveUp,
Dec 04 07:53:09.453 INFO [stderr]    |     ^^^^^^
Dec 04 07:53:09.453 INFO [stderr] 
Dec 04 07:53:09.453 INFO [stderr] warning: variant is never constructed: `MoveDown`
Dec 04 07:53:09.453 INFO [stderr]   --> src/main.rs:60:5
Dec 04 07:53:09.453 INFO [stderr]    |
Dec 04 07:53:09.453 INFO [stderr] 60 |     MoveDown,
Dec 04 07:53:09.453 INFO [stderr]    |     ^^^^^^^^
Dec 04 07:53:09.453 INFO [stderr] 
Dec 04 07:53:09.453 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
Dec 04 07:53:09.453 INFO [stderr] su: No module specific data is present
Dec 04 07:53:10.004 INFO running `"docker" "inspect" "cc731052251e87977439beb2f5adc5da533b002acd993c36e49a1a6dba8e12ab"`
Dec 04 07:53:10.425 INFO running `"docker" "rm" "-f" "cc731052251e87977439beb2f5adc5da533b002acd993c36e49a1a6dba8e12ab"`
Dec 04 07:53:10.850 INFO [stdout] cc731052251e87977439beb2f5adc5da533b002acd993c36e49a1a6dba8e12ab