Dec 19 06:22:59.346 INFO checking underflowed/text-adventure-game-in-rust against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 06:22:59.347 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/underflowed/text-adventure-game-in-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 06:22:59.831 INFO [stdout] 196302b22bfe10d26a1cfd744943cd92cc30453a260e0090cf3caa6683247251
Dec 19 06:22:59.832 INFO running `"docker" "start" "-a" "196302b22bfe10d26a1cfd744943cd92cc30453a260e0090cf3caa6683247251"`
Dec 19 06:23:01.184 INFO [stderr]     Checking text_adventure v0.1.0 (/opt/crater/workdir)
Dec 19 06:23:01.541 INFO [stderr] warning: method is never used: `to_string`
Dec 19 06:23:01.541 INFO [stderr]   --> src/main.rs:43:5
Dec 19 06:23:01.541 INFO [stderr]    |
Dec 19 06:23:01.541 INFO [stderr] 43 |     fn to_string(&self) -> &str {
Dec 19 06:23:01.541 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 06:23:01.542 INFO [stderr]    |
Dec 19 06:23:01.542 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 06:23:01.542 INFO [stderr] 
Dec 19 06:23:01.542 INFO [stderr] warning: variant is never constructed: `MoveUp`
Dec 19 06:23:01.542 INFO [stderr]   --> src/main.rs:58:5
Dec 19 06:23:01.542 INFO [stderr]    |
Dec 19 06:23:01.542 INFO [stderr] 58 |     MoveUp,
Dec 19 06:23:01.542 INFO [stderr]    |     ^^^^^^
Dec 19 06:23:01.542 INFO [stderr] 
Dec 19 06:23:01.542 INFO [stderr] warning: variant is never constructed: `MoveDown`
Dec 19 06:23:01.542 INFO [stderr]   --> src/main.rs:60:5
Dec 19 06:23:01.542 INFO [stderr]    |
Dec 19 06:23:01.542 INFO [stderr] 60 |     MoveDown,
Dec 19 06:23:01.542 INFO [stderr]    |     ^^^^^^^^
Dec 19 06:23:01.542 INFO [stderr] 
Dec 19 06:23:01.563 INFO [stderr] warning: method is never used: `to_string`
Dec 19 06:23:01.563 INFO [stderr]   --> src/main.rs:43:5
Dec 19 06:23:01.563 INFO [stderr]    |
Dec 19 06:23:01.563 INFO [stderr] 43 |     fn to_string(&self) -> &str {
Dec 19 06:23:01.563 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 06:23:01.563 INFO [stderr]    |
Dec 19 06:23:01.563 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 06:23:01.563 INFO [stderr] 
Dec 19 06:23:01.564 INFO [stderr] warning: variant is never constructed: `MoveUp`
Dec 19 06:23:01.564 INFO [stderr]   --> src/main.rs:58:5
Dec 19 06:23:01.564 INFO [stderr]    |
Dec 19 06:23:01.564 INFO [stderr] 58 |     MoveUp,
Dec 19 06:23:01.564 INFO [stderr]    |     ^^^^^^
Dec 19 06:23:01.564 INFO [stderr] 
Dec 19 06:23:01.564 INFO [stderr] warning: variant is never constructed: `MoveDown`
Dec 19 06:23:01.564 INFO [stderr]   --> src/main.rs:60:5
Dec 19 06:23:01.564 INFO [stderr]    |
Dec 19 06:23:01.564 INFO [stderr] 60 |     MoveDown,
Dec 19 06:23:01.564 INFO [stderr]    |     ^^^^^^^^
Dec 19 06:23:01.564 INFO [stderr] 
Dec 19 06:23:01.596 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
Dec 19 06:23:02.202 INFO running `"docker" "inspect" "196302b22bfe10d26a1cfd744943cd92cc30453a260e0090cf3caa6683247251"`
Dec 19 06:23:02.574 INFO running `"docker" "rm" "-f" "196302b22bfe10d26a1cfd744943cd92cc30453a260e0090cf3caa6683247251"`
Dec 19 06:23:02.805 INFO [stdout] 196302b22bfe10d26a1cfd744943cd92cc30453a260e0090cf3caa6683247251