Dec 13 10:21:29.322 INFO testing mmiecz/chip8-rust against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 10:21:29.322 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 13 10:21:29.733 INFO [stdout] 2151fc8a9cbf7185823f2468274ee607c4cd882f309c679386c22d4209221d09
Dec 13 10:21:29.739 INFO running `"docker" "start" "-a" "2151fc8a9cbf7185823f2468274ee607c4cd882f309c679386c22d4209221d09"`
Dec 13 10:21:31.644 INFO [stderr] usermod: no changes
Dec 13 10:21:31.868 INFO [stderr]    Compiling chip8-rust v0.1.0 (/source)
Dec 13 10:21:33.235 INFO [stderr] warning: unused import: `glium::glutin::VirtualKeyCode`
Dec 13 10:21:33.235 INFO [stderr]    --> src/cpu.rs:446:13
Dec 13 10:21:33.235 INFO [stderr]     |
Dec 13 10:21:33.235 INFO [stderr] 446 |         use glium::glutin::VirtualKeyCode;
Dec 13 10:21:33.235 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 10:21:33.235 INFO [stderr]     |
Dec 13 10:21:33.235 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 13 10:21:33.235 INFO [stderr] 
Dec 13 10:21:33.235 INFO [stderr] warning: unused import: `glium::glutin::VirtualKeyCode`
Dec 13 10:21:33.235 INFO [stderr]    --> src/cpu.rs:455:13
Dec 13 10:21:33.235 INFO [stderr]     |
Dec 13 10:21:33.235 INFO [stderr] 455 |         use glium::glutin::VirtualKeyCode;
Dec 13 10:21:33.235 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 10:21:33.235 INFO [stderr] 
Dec 13 10:21:33.235 INFO [stderr] warning: unused import: `glium::DisplayBuild`
Dec 13 10:21:33.235 INFO [stderr]  --> src/input.rs:3:5
Dec 13 10:21:33.235 INFO [stderr]   |
Dec 13 10:21:33.235 INFO [stderr] 3 | use glium::DisplayBuild;
Dec 13 10:21:33.235 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 13 10:21:33.235 INFO [stderr] 
Dec 13 10:21:33.235 INFO [stderr] warning: unused import: `std::thread`
Dec 13 10:21:33.235 INFO [stderr]  --> src/input.rs:4:5
Dec 13 10:21:33.235 INFO [stderr]   |
Dec 13 10:21:33.235 INFO [stderr] 4 | use std::thread;
Dec 13 10:21:33.235 INFO [stderr]   |     ^^^^^^^^^^^
Dec 13 10:21:33.235 INFO [stderr] 
Dec 13 10:21:33.235 INFO [stderr] warning: unused import: `std::time`
Dec 13 10:21:33.235 INFO [stderr]  --> src/input.rs:5:5
Dec 13 10:21:33.235 INFO [stderr]   |
Dec 13 10:21:33.235 INFO [stderr] 5 | use std::time;
Dec 13 10:21:33.235 INFO [stderr]   |     ^^^^^^^^^
Dec 13 10:21:33.235 INFO [stderr] 
Dec 13 10:21:33.235 INFO [stderr] warning: unused import: `glium::glutin`
Dec 13 10:21:33.235 INFO [stderr]  --> src/display.rs:4:5
Dec 13 10:21:33.235 INFO [stderr]   |
Dec 13 10:21:33.235 INFO [stderr] 4 | use glium::glutin;
Dec 13 10:21:33.235 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 13 10:21:33.235 INFO [stderr] 
Dec 13 10:21:33.235 INFO [stderr] warning: unused import: `std::path::Path`
Dec 13 10:21:33.235 INFO [stderr]  --> src/display.rs:6:5
Dec 13 10:21:33.235 INFO [stderr]   |
Dec 13 10:21:33.235 INFO [stderr] 6 | use std::path::Path;
Dec 13 10:21:33.235 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 13 10:21:33.235 INFO [stderr] 
Dec 13 10:21:33.235 INFO [stderr] warning: unused import: `std::fs::File`
Dec 13 10:21:33.235 INFO [stderr]  --> src/display.rs:7:5
Dec 13 10:21:33.235 INFO [stderr]   |
Dec 13 10:21:33.235 INFO [stderr] 7 | use std::fs::File;
Dec 13 10:21:33.235 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 13 10:21:33.235 INFO [stderr] 
Dec 13 10:21:33.235 INFO [stderr] warning: unused imports: `CpuError`, `Cpu`, `DecoderError`
Dec 13 10:21:33.235 INFO [stderr]  --> src/main.rs:9:11
Dec 13 10:21:33.235 INFO [stderr]   |
Dec 13 10:21:33.235 INFO [stderr] 9 | use cpu::{Cpu, DecoderError, CpuError};
Dec 13 10:21:33.235 INFO [stderr]   |           ^^^  ^^^^^^^^^^^^  ^^^^^^^^
Dec 13 10:21:33.235 INFO [stderr] 
Dec 13 10:21:33.235 INFO [stderr] warning: unused imports: `Event`, `VirtualKeyCode`
Dec 13 10:21:33.235 INFO [stderr]   --> src/main.rs:10:21
Dec 13 10:21:33.235 INFO [stderr]    |
Dec 13 10:21:33.235 INFO [stderr] 10 | use glium::glutin::{VirtualKeyCode, Event};
Dec 13 10:21:33.235 INFO [stderr]    |                     ^^^^^^^^^^^^^^  ^^^^^
Dec 13 10:21:33.235 INFO [stderr] 
Dec 13 10:21:33.449 INFO [stderr] warning: unreachable expression
Dec 13 10:21:33.450 INFO [stderr]    --> src/cpu.rs:264:9
Dec 13 10:21:33.450 INFO [stderr]     |
Dec 13 10:21:33.450 INFO [stderr] 264 |         "cls".to_string()
Dec 13 10:21:33.450 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^
Dec 13 10:21:33.450 INFO [stderr]     |
Dec 13 10:21:33.450 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 13 10:21:33.450 INFO [stderr] 
Dec 13 10:21:33.461 INFO [stderr] warning: unreachable expression
Dec 13 10:21:33.461 INFO [stderr]    --> src/cpu.rs:480:9
Dec 13 10:21:33.463 INFO [stderr]     |
Dec 13 10:21:33.463 INFO [stderr] 480 |         format!("wkp {:#x}", self.regs.v[reg])
Dec 13 10:21:33.463 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 10:21:33.463 INFO [stderr]     |
Dec 13 10:21:33.463 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 13 10:21:33.463 INFO [stderr] 
Dec 13 10:21:33.557 INFO [stderr] warning: unused variable: `what`
Dec 13 10:21:33.558 INFO [stderr]   --> src/cpu.rs:75:17
Dec 13 10:21:33.558 INFO [stderr]    |
Dec 13 10:21:33.558 INFO [stderr] 75 |             Err(what) => Err(CpuError::DecoderError)
Dec 13 10:21:33.559 INFO [stderr]    |                 ^^^^ help: consider using `_what` instead
Dec 13 10:21:33.559 INFO [stderr]    |
Dec 13 10:21:33.559 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 10:21:33.559 INFO [stderr] 
Dec 13 10:21:33.560 INFO [stderr] warning: unused variable: `placeholder_display`
Dec 13 10:21:33.560 INFO [stderr]    --> src/cpu.rs:262:23
Dec 13 10:21:33.560 INFO [stderr]     |
Dec 13 10:21:33.561 INFO [stderr] 262 |     fn cls(&mut self, placeholder_display : u8 ) -> String  {
Dec 13 10:21:33.561 INFO [stderr]     |                       ^^^^^^^^^^^^^^^^^^^ help: consider using `_placeholder_display` instead
Dec 13 10:21:33.561 INFO [stderr] 
Dec 13 10:21:33.562 INFO [stderr] warning: unused variable: `reg`
Dec 13 10:21:33.562 INFO [stderr]    --> src/cpu.rs:478:37
Dec 13 10:21:33.562 INFO [stderr]     |
Dec 13 10:21:33.563 INFO [stderr] 478 |     fn wait_for_keypress(&mut self, reg: usize) -> String  {
Dec 13 10:21:33.563 INFO [stderr]     |                                     ^^^ help: consider using `_reg` instead
Dec 13 10:21:33.563 INFO [stderr] 
Dec 13 10:21:33.563 INFO [stderr] warning: unused variable: `title`
Dec 13 10:21:33.564 INFO [stderr]   --> src/display.rs:30:39
Dec 13 10:21:33.564 INFO [stderr]    |
Dec 13 10:21:33.567 INFO [stderr] 30 |     pub fn new(dimension: (u32, u32), title: &str) -> Result<Self, DisplayBuildError> {
Dec 13 10:21:33.567 INFO [stderr]    |                                       ^^^^^ help: consider using `_title` instead
Dec 13 10:21:33.567 INFO [stderr] 
Dec 13 10:21:33.617 INFO [stderr] warning: variable does not need to be mutable
Dec 13 10:21:33.618 INFO [stderr]   --> src/display.rs:99:13
Dec 13 10:21:33.619 INFO [stderr]    |
Dec 13 10:21:33.619 INFO [stderr] 99 |         let mut collision = false;
Dec 13 10:21:33.619 INFO [stderr]    |             ----^^^^^^^^^
Dec 13 10:21:33.619 INFO [stderr]    |             |
Dec 13 10:21:33.619 INFO [stderr]    |             help: remove this `mut`
Dec 13 10:21:33.619 INFO [stderr]    |
Dec 13 10:21:33.619 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 10:21:33.619 INFO [stderr] 
Dec 13 10:21:33.623 INFO [stderr] warning: field is never used: `is_closing`
Dec 13 10:21:33.623 INFO [stderr]  --> src/input.rs:8:5
Dec 13 10:21:33.623 INFO [stderr]   |
Dec 13 10:21:33.623 INFO [stderr] 8 |     is_closing : bool,
Dec 13 10:21:33.623 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 13 10:21:33.623 INFO [stderr]   |
Dec 13 10:21:33.623 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 13 10:21:33.623 INFO [stderr] 
Dec 13 10:21:33.623 INFO [stderr] warning: variant is never constructed: `InvalidDimensionError`
Dec 13 10:21:33.623 INFO [stderr]   --> src/display.rs:17:5
Dec 13 10:21:33.623 INFO [stderr]    |
Dec 13 10:21:33.623 INFO [stderr] 17 |     InvalidDimensionError,
Dec 13 10:21:33.623 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 13 10:21:33.623 INFO [stderr] 
Dec 13 10:21:38.687 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.03s
Dec 13 10:21:38.691 INFO [stderr] su: No module specific data is present
Dec 13 10:21:39.375 INFO running `"docker" "inspect" "2151fc8a9cbf7185823f2468274ee607c4cd882f309c679386c22d4209221d09"`
Dec 13 10:21:39.659 INFO running `"docker" "rm" "-f" "2151fc8a9cbf7185823f2468274ee607c4cd882f309c679386c22d4209221d09"`
Dec 13 10:21:39.983 INFO [stdout] 2151fc8a9cbf7185823f2468274ee607c4cd882f309c679386c22d4209221d09
Dec 13 10:21:39.989 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 13 10:21:40.472 INFO [stdout] c32b53b87921daf97c17916214c8930ad38bc3ee73b11640770b8ac688062b96
Dec 13 10:21:40.474 INFO running `"docker" "start" "-a" "c32b53b87921daf97c17916214c8930ad38bc3ee73b11640770b8ac688062b96"`
Dec 13 10:21:41.530 INFO [stderr] usermod: no changes
Dec 13 10:21:41.696 INFO [stderr]    Compiling chip8-rust v0.1.0 (/source)
Dec 13 10:21:42.587 INFO [stderr] warning: unused import: `glium::glutin::VirtualKeyCode`
Dec 13 10:21:42.587 INFO [stderr]    --> src/cpu.rs:446:13
Dec 13 10:21:42.587 INFO [stderr]     |
Dec 13 10:21:42.587 INFO [stderr] 446 |         use glium::glutin::VirtualKeyCode;
Dec 13 10:21:42.587 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 10:21:42.587 INFO [stderr]     |
Dec 13 10:21:42.587 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 13 10:21:42.587 INFO [stderr] 
Dec 13 10:21:42.587 INFO [stderr] warning: unused import: `glium::glutin::VirtualKeyCode`
Dec 13 10:21:42.587 INFO [stderr]    --> src/cpu.rs:455:13
Dec 13 10:21:42.587 INFO [stderr]     |
Dec 13 10:21:42.587 INFO [stderr] 455 |         use glium::glutin::VirtualKeyCode;
Dec 13 10:21:42.587 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 10:21:42.587 INFO [stderr] 
Dec 13 10:21:42.587 INFO [stderr] warning: unused import: `glium::DisplayBuild`
Dec 13 10:21:42.587 INFO [stderr]  --> src/input.rs:3:5
Dec 13 10:21:42.587 INFO [stderr]   |
Dec 13 10:21:42.587 INFO [stderr] 3 | use glium::DisplayBuild;
Dec 13 10:21:42.587 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 13 10:21:42.587 INFO [stderr] 
Dec 13 10:21:42.587 INFO [stderr] warning: unused import: `std::thread`
Dec 13 10:21:42.587 INFO [stderr]  --> src/input.rs:4:5
Dec 13 10:21:42.587 INFO [stderr]   |
Dec 13 10:21:42.587 INFO [stderr] 4 | use std::thread;
Dec 13 10:21:42.587 INFO [stderr]   |     ^^^^^^^^^^^
Dec 13 10:21:42.587 INFO [stderr] 
Dec 13 10:21:42.587 INFO [stderr] warning: unused import: `std::time`
Dec 13 10:21:42.587 INFO [stderr]  --> src/input.rs:5:5
Dec 13 10:21:42.587 INFO [stderr]   |
Dec 13 10:21:42.587 INFO [stderr] 5 | use std::time;
Dec 13 10:21:42.587 INFO [stderr]   |     ^^^^^^^^^
Dec 13 10:21:42.587 INFO [stderr] 
Dec 13 10:21:42.587 INFO [stderr] warning: unused import: `glium::glutin`
Dec 13 10:21:42.587 INFO [stderr]  --> src/display.rs:4:5
Dec 13 10:21:42.587 INFO [stderr]   |
Dec 13 10:21:42.587 INFO [stderr] 4 | use glium::glutin;
Dec 13 10:21:42.587 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 13 10:21:42.587 INFO [stderr] 
Dec 13 10:21:42.587 INFO [stderr] warning: unused import: `std::path::Path`
Dec 13 10:21:42.587 INFO [stderr]  --> src/display.rs:6:5
Dec 13 10:21:42.587 INFO [stderr]   |
Dec 13 10:21:42.587 INFO [stderr] 6 | use std::path::Path;
Dec 13 10:21:42.587 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 13 10:21:42.587 INFO [stderr] 
Dec 13 10:21:42.587 INFO [stderr] warning: unused import: `std::fs::File`
Dec 13 10:21:42.587 INFO [stderr]  --> src/display.rs:7:5
Dec 13 10:21:42.587 INFO [stderr]   |
Dec 13 10:21:42.587 INFO [stderr] 7 | use std::fs::File;
Dec 13 10:21:42.587 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 13 10:21:42.587 INFO [stderr] 
Dec 13 10:21:42.593 INFO [stderr] warning: unused imports: `CpuError`, `Cpu`, `DecoderError`
Dec 13 10:21:42.593 INFO [stderr]  --> src/main.rs:9:11
Dec 13 10:21:42.593 INFO [stderr]   |
Dec 13 10:21:42.593 INFO [stderr] 9 | use cpu::{Cpu, DecoderError, CpuError};
Dec 13 10:21:42.593 INFO [stderr]   |           ^^^  ^^^^^^^^^^^^  ^^^^^^^^
Dec 13 10:21:42.593 INFO [stderr] 
Dec 13 10:21:42.593 INFO [stderr] warning: unused imports: `Event`, `VirtualKeyCode`
Dec 13 10:21:42.593 INFO [stderr]   --> src/main.rs:10:21
Dec 13 10:21:42.593 INFO [stderr]    |
Dec 13 10:21:42.593 INFO [stderr] 10 | use glium::glutin::{VirtualKeyCode, Event};
Dec 13 10:21:42.593 INFO [stderr]    |                     ^^^^^^^^^^^^^^  ^^^^^
Dec 13 10:21:42.593 INFO [stderr] 
Dec 13 10:21:42.703 INFO [stderr] warning: unreachable expression
Dec 13 10:21:42.703 INFO [stderr]    --> src/cpu.rs:264:9
Dec 13 10:21:42.703 INFO [stderr]     |
Dec 13 10:21:42.703 INFO [stderr] 264 |         "cls".to_string()
Dec 13 10:21:42.703 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^
Dec 13 10:21:42.703 INFO [stderr]     |
Dec 13 10:21:42.703 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 13 10:21:42.703 INFO [stderr] 
Dec 13 10:21:42.742 INFO [stderr] warning: unreachable expression
Dec 13 10:21:42.742 INFO [stderr]    --> src/cpu.rs:480:9
Dec 13 10:21:42.742 INFO [stderr]     |
Dec 13 10:21:42.742 INFO [stderr] 480 |         format!("wkp {:#x}", self.regs.v[reg])
Dec 13 10:21:42.742 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 10:21:42.742 INFO [stderr]     |
Dec 13 10:21:42.743 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 13 10:21:42.743 INFO [stderr] 
Dec 13 10:21:42.819 INFO [stderr] warning: unused variable: `what`
Dec 13 10:21:42.819 INFO [stderr]   --> src/cpu.rs:75:17
Dec 13 10:21:42.819 INFO [stderr]    |
Dec 13 10:21:42.819 INFO [stderr] 75 |             Err(what) => Err(CpuError::DecoderError)
Dec 13 10:21:42.819 INFO [stderr]    |                 ^^^^ help: consider using `_what` instead
Dec 13 10:21:42.819 INFO [stderr]    |
Dec 13 10:21:42.819 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 10:21:42.819 INFO [stderr] 
Dec 13 10:21:42.819 INFO [stderr] warning: unused variable: `placeholder_display`
Dec 13 10:21:42.819 INFO [stderr]    --> src/cpu.rs:262:23
Dec 13 10:21:42.819 INFO [stderr]     |
Dec 13 10:21:42.819 INFO [stderr] 262 |     fn cls(&mut self, placeholder_display : u8 ) -> String  {
Dec 13 10:21:42.819 INFO [stderr]     |                       ^^^^^^^^^^^^^^^^^^^ help: consider using `_placeholder_display` instead
Dec 13 10:21:42.819 INFO [stderr] 
Dec 13 10:21:42.819 INFO [stderr] warning: unused variable: `reg`
Dec 13 10:21:42.819 INFO [stderr]    --> src/cpu.rs:478:37
Dec 13 10:21:42.819 INFO [stderr]     |
Dec 13 10:21:42.819 INFO [stderr] 478 |     fn wait_for_keypress(&mut self, reg: usize) -> String  {
Dec 13 10:21:42.819 INFO [stderr]     |                                     ^^^ help: consider using `_reg` instead
Dec 13 10:21:42.819 INFO [stderr] 
Dec 13 10:21:42.819 INFO [stderr] warning: unused variable: `title`
Dec 13 10:21:42.819 INFO [stderr]   --> src/display.rs:30:39
Dec 13 10:21:42.819 INFO [stderr]    |
Dec 13 10:21:42.819 INFO [stderr] 30 |     pub fn new(dimension: (u32, u32), title: &str) -> Result<Self, DisplayBuildError> {
Dec 13 10:21:42.819 INFO [stderr]    |                                       ^^^^^ help: consider using `_title` instead
Dec 13 10:21:42.819 INFO [stderr] 
Dec 13 10:21:42.878 INFO [stderr] warning: variable does not need to be mutable
Dec 13 10:21:42.878 INFO [stderr]   --> src/display.rs:99:13
Dec 13 10:21:42.878 INFO [stderr]    |
Dec 13 10:21:42.878 INFO [stderr] 99 |         let mut collision = false;
Dec 13 10:21:42.878 INFO [stderr]    |             ----^^^^^^^^^
Dec 13 10:21:42.878 INFO [stderr]    |             |
Dec 13 10:21:42.878 INFO [stderr]    |             help: remove this `mut`
Dec 13 10:21:42.878 INFO [stderr]    |
Dec 13 10:21:42.878 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 10:21:42.878 INFO [stderr] 
Dec 13 10:21:42.887 INFO [stderr] warning: field is never used: `is_closing`
Dec 13 10:21:42.887 INFO [stderr]  --> src/input.rs:8:5
Dec 13 10:21:42.887 INFO [stderr]   |
Dec 13 10:21:42.887 INFO [stderr] 8 |     is_closing : bool,
Dec 13 10:21:42.887 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 13 10:21:42.887 INFO [stderr]   |
Dec 13 10:21:42.887 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 13 10:21:42.887 INFO [stderr] 
Dec 13 10:21:42.887 INFO [stderr] warning: variant is never constructed: `InvalidDimensionError`
Dec 13 10:21:42.887 INFO [stderr]   --> src/display.rs:17:5
Dec 13 10:21:42.887 INFO [stderr]    |
Dec 13 10:21:42.887 INFO [stderr] 17 |     InvalidDimensionError,
Dec 13 10:21:42.887 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 13 10:21:42.887 INFO [stderr] 
Dec 13 10:21:43.220 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
Dec 13 10:21:43.231 INFO [stderr] su: No module specific data is present
Dec 13 10:21:43.634 INFO running `"docker" "inspect" "c32b53b87921daf97c17916214c8930ad38bc3ee73b11640770b8ac688062b96"`
Dec 13 10:21:43.852 INFO running `"docker" "rm" "-f" "c32b53b87921daf97c17916214c8930ad38bc3ee73b11640770b8ac688062b96"`
Dec 13 10:21:44.126 INFO [stdout] c32b53b87921daf97c17916214c8930ad38bc3ee73b11640770b8ac688062b96
Dec 13 10:21:44.130 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 13 10:21:44.651 INFO [stdout] 6892d51253acdbd07d63b21375b8cb5b28821b9bec9c698acbf057fdbdb83506
Dec 13 10:21:44.655 INFO running `"docker" "start" "-a" "6892d51253acdbd07d63b21375b8cb5b28821b9bec9c698acbf057fdbdb83506"`
Dec 13 10:21:45.284 INFO [stderr] usermod: no changes
Dec 13 10:21:45.458 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
Dec 13 10:21:45.458 INFO [stderr]      Running /target/debug/deps/chip8_rust-eb482c6821c272f9
Dec 13 10:21:45.458 INFO [stderr] su: No module specific data is present
Dec 13 10:21:45.458 INFO [stdout] 
Dec 13 10:21:45.458 INFO [stdout] running 0 tests
Dec 13 10:21:45.458 INFO [stdout] 
Dec 13 10:21:45.458 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 10:21:45.459 INFO [stdout] 
Dec 13 10:21:45.987 INFO running `"docker" "inspect" "6892d51253acdbd07d63b21375b8cb5b28821b9bec9c698acbf057fdbdb83506"`
Dec 13 10:21:46.433 INFO running `"docker" "rm" "-f" "6892d51253acdbd07d63b21375b8cb5b28821b9bec9c698acbf057fdbdb83506"`
Dec 13 10:21:46.566 INFO [stdout] 6892d51253acdbd07d63b21375b8cb5b28821b9bec9c698acbf057fdbdb83506