[INFO] cloning repository CasperN/snake
[INFO] running `"git" "clone" "--bare" "git://github.com/CasperN/snake.git" "work/cache/sources/gh/CasperN/snake"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/CasperN/snake'...
[INFO] running `"git" "clone" "work/cache/sources/gh/CasperN/snake" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/CasperN/snake"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/CasperN/snake'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CasperN/snake" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/CasperN/snake"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/CasperN/snake'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4f27a43123c6ee9e86731adf9a3bac2145c09eb2
[INFO] sha for GitHub repo CasperN/snake: 4f27a43123c6ee9e86731adf9a3bac2145c09eb2
[INFO] validating manifest of CasperN/snake on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of CasperN/snake on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing CasperN/snake
[INFO] finished frobbing CasperN/snake
[INFO] frobbed toml for CasperN/snake written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/CasperN/snake/Cargo.toml
[INFO] started frobbing CasperN/snake
[INFO] finished frobbing CasperN/snake
[INFO] frobbed toml for CasperN/snake written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/CasperN/snake/Cargo.toml
[INFO] crate CasperN/snake already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking CasperN/snake against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-3/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/CasperN/snake:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f83f9c243cf3095935101a8854343af4ee0d845b421afcb8427eecccfc3285ce
[INFO] running `"docker" "start" "-a" "f83f9c243cf3095935101a8854343af4ee0d845b421afcb8427eecccfc3285ce"`
[INFO] [stderr]     Checking snake v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `sdl2`
[INFO] [stderr]  --> src/game_render.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use sdl2;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2`
[INFO] [stderr]  --> src/game_render.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use sdl2;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `font_col`
[INFO] [stderr]   --> src/game_render.rs:49:7
[INFO] [stderr]    |
[INFO] [stderr] 49 |   let font_col = Color::RGB(255, 0, 0);
[INFO] [stderr]    |       ^^^^^^^^ help: consider prefixing with an underscore: `_font_col`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `font_col`
[INFO] [stderr]   --> src/game_render.rs:62:7
[INFO] [stderr]    |
[INFO] [stderr] 62 |   let font_col = Color::RGB(255, 0, 0);
[INFO] [stderr]    |       ^^^^^^^^ help: consider prefixing with an underscore: `_font_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `font_col`
[INFO] [stderr]   --> src/game_render.rs:49:7
[INFO] [stderr]    |
[INFO] [stderr] 49 |   let font_col = Color::RGB(255, 0, 0);
[INFO] [stderr]    |       ^^^^^^^^ help: consider prefixing with an underscore: `_font_col`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `font_col`
[INFO] [stderr]   --> src/game_render.rs:62:7
[INFO] [stderr]    |
[INFO] [stderr] 62 |   let font_col = Color::RGB(255, 0, 0);
[INFO] [stderr]    |       ^^^^^^^^ help: consider prefixing with an underscore: `_font_col`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game_state.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game_state.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let mut snake = LinkedList::new();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/game_render.rs:26:3
[INFO] [stderr]    |
[INFO] [stderr] 26 |   canvas.fill_rect(board);
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/game_render.rs:73:3
[INFO] [stderr]    |
[INFO] [stderr] 73 |   canvas.fill_rect(r);
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game_state.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game_state.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let mut snake = LinkedList::new();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/game_render.rs:26:3
[INFO] [stderr]    |
[INFO] [stderr] 26 |   canvas.fill_rect(board);
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/game_render.rs:73:3
[INFO] [stderr]    |
[INFO] [stderr] 73 |   canvas.fill_rect(r);
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `"docker" "inspect" "f83f9c243cf3095935101a8854343af4ee0d845b421afcb8427eecccfc3285ce"`
[INFO] running `"docker" "rm" "-f" "f83f9c243cf3095935101a8854343af4ee0d845b421afcb8427eecccfc3285ce"`
[INFO] [stdout] f83f9c243cf3095935101a8854343af4ee0d845b421afcb8427eecccfc3285ce