[INFO] updating cached repository andbass/Chip8
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/andbass/Chip8
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/andbass/Chip8" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/andbass/Chip8"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/andbass/Chip8'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/andbass/Chip8" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/andbass/Chip8"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/andbass/Chip8'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] aac532fef25ea6a61a6ea54eaedd6237de6235b7
[INFO] sha for GitHub repo andbass/Chip8: aac532fef25ea6a61a6ea54eaedd6237de6235b7
[INFO] validating manifest of andbass/Chip8 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of andbass/Chip8 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing andbass/Chip8
[INFO] finished frobbing andbass/Chip8
[INFO] frobbed toml for andbass/Chip8 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/andbass/Chip8/Cargo.toml
[INFO] started frobbing andbass/Chip8
[INFO] finished frobbing andbass/Chip8
[INFO] frobbed toml for andbass/Chip8 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/andbass/Chip8/Cargo.toml
[INFO] crate andbass/Chip8 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking andbass/Chip8 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/andbass/Chip8:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] eb9abd249cabe1fd64a26af34091a2a04731a75532b80cf3ab793bfca38bf200
[INFO] running `"docker" "start" "-a" "eb9abd249cabe1fd64a26af34091a2a04731a75532b80cf3ab793bfca38bf200"`
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]    Compiling sdl2-sys v0.31.0 (https://github.com/Rust-SDL2/rust-sdl2#43ca1ba0)
[INFO] [stderr]     Checking rand v0.3.19
[INFO] [stderr]     Checking sdl2 v0.31.0 (https://github.com/Rust-SDL2/rust-sdl2#43ca1ba0)
[INFO] [stderr] warning: unused import: `sdl2`
[INFO] [stderr]  --> src/frontend/sdl.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use sdl2;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `WindowPos`, `Window`
[INFO] [stderr]  --> src/frontend/sdl.rs:6:19
[INFO] [stderr]   |
[INFO] [stderr] 6 | use sdl2::video::{Window, WindowPos};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::keyboard`
[INFO] [stderr]  --> src/frontend/sdl.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use sdl2::keyboard;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2`
[INFO] [stderr]  --> src/frontend/sdl.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use sdl2;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `WindowPos`, `Window`
[INFO] [stderr]  --> src/frontend/sdl.rs:6:19
[INFO] [stderr]   |
[INFO] [stderr] 6 | use sdl2::video::{Window, WindowPos};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::keyboard`
[INFO] [stderr]  --> src/frontend/sdl.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use sdl2::keyboard;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/frontend/sdl.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |         let mut drawer = &mut self.renderer;
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/frontend/sdl.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 | /                     drawer.fill_rect(Rect::new(
[INFO] [stderr] 54 | |                         x as i32 * GRID_SIZE,
[INFO] [stderr] 55 | |                         y as i32 * GRID_SIZE,
[INFO] [stderr] 56 | |
[INFO] [stderr] 57 | |                         GRID_SIZE as u32,
[INFO] [stderr] 58 | |                         GRID_SIZE as u32,
[INFO] [stderr] 59 | |                     ));
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/frontend/sdl.rs:44:13
[INFO] [stderr]    |
[INFO] [stderr] 44 |         let mut drawer = &mut self.renderer;
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/frontend/sdl.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 | /                     drawer.fill_rect(Rect::new(
[INFO] [stderr] 54 | |                         x as i32 * GRID_SIZE,
[INFO] [stderr] 55 | |                         y as i32 * GRID_SIZE,
[INFO] [stderr] 56 | |
[INFO] [stderr] 57 | |                         GRID_SIZE as u32,
[INFO] [stderr] 58 | |                         GRID_SIZE as u32,
[INFO] [stderr] 59 | |                     ));
[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]     Finished dev [unoptimized + debuginfo] target(s) in 8.72s
[INFO] running `"docker" "inspect" "eb9abd249cabe1fd64a26af34091a2a04731a75532b80cf3ab793bfca38bf200"`
[INFO] running `"docker" "rm" "-f" "eb9abd249cabe1fd64a26af34091a2a04731a75532b80cf3ab793bfca38bf200"`
[INFO] [stdout] eb9abd249cabe1fd64a26af34091a2a04731a75532b80cf3ab793bfca38bf200