[INFO] updating cached repository underflowed/text-adventure-game-in-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/underflowed/text-adventure-game-in-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/underflowed/text-adventure-game-in-rust" "work/ex/clippy-test-run/sources/stable/gh/underflowed/text-adventure-game-in-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/underflowed/text-adventure-game-in-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/underflowed/text-adventure-game-in-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/underflowed/text-adventure-game-in-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/underflowed/text-adventure-game-in-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 92f6d195657fbe6423ea03a835a421fc37b668ef
[INFO] sha for GitHub repo underflowed/text-adventure-game-in-rust: 92f6d195657fbe6423ea03a835a421fc37b668ef
[INFO] validating manifest of underflowed/text-adventure-game-in-rust on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of underflowed/text-adventure-game-in-rust on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing underflowed/text-adventure-game-in-rust
[INFO] finished frobbing underflowed/text-adventure-game-in-rust
[INFO] frobbed toml for underflowed/text-adventure-game-in-rust written to work/ex/clippy-test-run/sources/stable/gh/underflowed/text-adventure-game-in-rust/Cargo.toml
[INFO] started frobbing underflowed/text-adventure-game-in-rust
[INFO] finished frobbing underflowed/text-adventure-game-in-rust
[INFO] frobbed toml for underflowed/text-adventure-game-in-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/underflowed/text-adventure-game-in-rust/Cargo.toml
[INFO] crate underflowed/text-adventure-game-in-rust has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting underflowed/text-adventure-game-in-rust against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1f000186ef8aed01c39b9a0f00b4754ad2c8221eece68788536db14df6141825
[INFO] running `"docker" "start" "-a" "1f000186ef8aed01c39b9a0f00b4754ad2c8221eece68788536db14df6141825"`
[INFO] [stderr]     Checking text_adventure v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: All variants have the same prefix: `Move`
[INFO] [stderr]   --> src/main.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | / enum Event {
[INFO] [stderr] 58 | |     MoveUp,
[INFO] [stderr] 59 | |     MoveLeft,
[INFO] [stderr] 60 | |     MoveDown,
[INFO] [stderr] 61 | |     MoveRight,
[INFO] [stderr] 62 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: remove the prefixes and use full paths to the variants instead of glob imports
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:158:13
[INFO] [stderr]     |
[INFO] [stderr] 158 |             return Event::MoveLeft;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Event::MoveLeft`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string`
[INFO] [stderr]   --> src/main.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn to_string(&self) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MoveUp`
[INFO] [stderr]   --> src/main.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     MoveUp,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MoveDown`
[INFO] [stderr]   --> src/main.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     MoveDown,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/main.rs:188:13
[INFO] [stderr]     |
[INFO] [stderr] 188 |         let ref mut room = map[y as usize][x as usize];
[INFO] [stderr]     |         ----^^^^^^^^^^^^------------------------------- help: try: `let room = &mut map[y as usize][x as usize];`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: All variants have the same prefix: `Move`
[INFO] [stderr]   --> src/main.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | / enum Event {
[INFO] [stderr] 58 | |     MoveUp,
[INFO] [stderr] 59 | |     MoveLeft,
[INFO] [stderr] 60 | |     MoveDown,
[INFO] [stderr] 61 | |     MoveRight,
[INFO] [stderr] 62 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: remove the prefixes and use full paths to the variants instead of glob imports
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:158:13
[INFO] [stderr]     |
[INFO] [stderr] 158 |             return Event::MoveLeft;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Event::MoveLeft`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string`
[INFO] [stderr]   --> src/main.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn to_string(&self) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MoveUp`
[INFO] [stderr]   --> src/main.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     MoveUp,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MoveDown`
[INFO] [stderr]   --> src/main.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     MoveDown,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/main.rs:188:13
[INFO] [stderr]     |
[INFO] [stderr] 188 |         let ref mut room = map[y as usize][x as usize];
[INFO] [stderr]     |         ----^^^^^^^^^^^^------------------------------- help: try: `let room = &mut map[y as usize][x as usize];`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "1f000186ef8aed01c39b9a0f00b4754ad2c8221eece68788536db14df6141825"`
[INFO] running `"docker" "rm" "-f" "1f000186ef8aed01c39b9a0f00b4754ad2c8221eece68788536db14df6141825"`
[INFO] [stdout] 1f000186ef8aed01c39b9a0f00b4754ad2c8221eece68788536db14df6141825