Dec 19 12:30:50.835 INFO checking mmiecz/chip8-rust against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 12:30:50.835 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/mmiecz/chip8-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 12:30:51.314 INFO [stdout] 444f8b9cd8b442872c550edf615978b4cccba3aedfbe7f524e83d75d583c98f8
Dec 19 12:30:51.317 INFO running `"docker" "start" "-a" "444f8b9cd8b442872c550edf615978b4cccba3aedfbe7f524e83d75d583c98f8"`
Dec 19 12:30:52.948 INFO [stderr]    Compiling libc v0.2.19
Dec 19 12:30:52.956 INFO [stderr]    Compiling serde v0.8.22
Dec 19 12:30:52.960 INFO [stderr]     Checking shared_library v0.1.5
Dec 19 12:30:52.960 INFO [stderr]    Compiling x11-dl v2.12.0
Dec 19 12:30:52.960 INFO [stderr]    Compiling glutin v0.7.2
Dec 19 12:30:52.960 INFO [stderr]     Checking backtrace-sys v0.1.5
Dec 19 12:30:52.960 INFO [stderr]     Checking fs2 v0.2.5
Dec 19 12:30:52.960 INFO [stderr]     Checking tempfile v2.1.4
Dec 19 12:30:54.120 INFO [stderr]     Checking backtrace v0.2.3
Dec 19 12:30:54.414 INFO [stderr]     Checking memmap v0.4.0
Dec 19 12:30:54.665 INFO [stderr]     Checking osmesa-sys v0.1.2
Dec 19 12:30:55.717 INFO [stderr]    Compiling rand v0.3.15
Dec 19 12:31:00.652 INFO [stderr]    Compiling phf_generator v0.7.20
Dec 19 12:31:01.140 INFO [stderr]    Compiling phf_codegen v0.7.20
Dec 19 12:31:01.812 INFO [stderr]    Compiling target_build_utils v0.1.2
Dec 19 12:31:05.890 INFO [stderr]    Compiling serde_json v0.8.4
Dec 19 12:31:16.199 INFO [stderr]    Compiling libloading v0.3.1
Dec 19 12:31:18.424 INFO [stderr]     Checking dlib v0.3.1
Dec 19 12:31:18.676 INFO [stderr]     Checking wayland-sys v0.7.6
Dec 19 12:31:19.050 INFO [stderr]     Checking wayland-client v0.7.6
Dec 19 12:31:20.469 INFO [stderr]     Checking wayland-window v0.4.3
Dec 19 12:31:20.469 INFO [stderr]     Checking wayland-kbd v0.6.2
Dec 19 12:31:21.373 INFO [stderr]     Checking winit v0.5.7
Dec 19 12:31:23.756 INFO [stderr]     Checking glium v0.16.0
Dec 19 12:31:36.722 INFO [stderr]     Checking chip8-rust v0.1.0 (/opt/crater/workdir)
Dec 19 12:31:37.071 INFO [stderr] warning: unused import: `glium::glutin::VirtualKeyCode`
Dec 19 12:31:37.071 INFO [stderr]    --> src/cpu.rs:446:13
Dec 19 12:31:37.071 INFO [stderr]     |
Dec 19 12:31:37.071 INFO [stderr] 446 |         use glium::glutin::VirtualKeyCode;
Dec 19 12:31:37.071 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.071 INFO [stderr]     |
Dec 19 12:31:37.071 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 19 12:31:37.071 INFO [stderr] 
Dec 19 12:31:37.071 INFO [stderr] warning: unused import: `glium::glutin::VirtualKeyCode`
Dec 19 12:31:37.071 INFO [stderr]    --> src/cpu.rs:455:13
Dec 19 12:31:37.071 INFO [stderr]     |
Dec 19 12:31:37.071 INFO [stderr] 455 |         use glium::glutin::VirtualKeyCode;
Dec 19 12:31:37.071 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.071 INFO [stderr] 
Dec 19 12:31:37.071 INFO [stderr] warning: unused import: `glium::DisplayBuild`
Dec 19 12:31:37.071 INFO [stderr]  --> src/input.rs:3:5
Dec 19 12:31:37.071 INFO [stderr]   |
Dec 19 12:31:37.071 INFO [stderr] 3 | use glium::DisplayBuild;
Dec 19 12:31:37.071 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.071 INFO [stderr] 
Dec 19 12:31:37.071 INFO [stderr] warning: unused import: `std::thread`
Dec 19 12:31:37.071 INFO [stderr]  --> src/input.rs:4:5
Dec 19 12:31:37.071 INFO [stderr]   |
Dec 19 12:31:37.071 INFO [stderr] 4 | use std::thread;
Dec 19 12:31:37.071 INFO [stderr]   |     ^^^^^^^^^^^
Dec 19 12:31:37.071 INFO [stderr] 
Dec 19 12:31:37.071 INFO [stderr] warning: unused import: `std::time`
Dec 19 12:31:37.072 INFO [stderr]  --> src/input.rs:5:5
Dec 19 12:31:37.072 INFO [stderr]   |
Dec 19 12:31:37.072 INFO [stderr] 5 | use std::time;
Dec 19 12:31:37.072 INFO [stderr]   |     ^^^^^^^^^
Dec 19 12:31:37.072 INFO [stderr] 
Dec 19 12:31:37.072 INFO [stderr] warning: unused import: `glium::glutin`
Dec 19 12:31:37.072 INFO [stderr]  --> src/display.rs:4:5
Dec 19 12:31:37.072 INFO [stderr]   |
Dec 19 12:31:37.072 INFO [stderr] 4 | use glium::glutin;
Dec 19 12:31:37.072 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 12:31:37.072 INFO [stderr] 
Dec 19 12:31:37.072 INFO [stderr] warning: unused import: `std::path::Path`
Dec 19 12:31:37.072 INFO [stderr]  --> src/display.rs:6:5
Dec 19 12:31:37.072 INFO [stderr]   |
Dec 19 12:31:37.072 INFO [stderr] 6 | use std::path::Path;
Dec 19 12:31:37.072 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 12:31:37.072 INFO [stderr] 
Dec 19 12:31:37.072 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 12:31:37.072 INFO [stderr]  --> src/display.rs:7:5
Dec 19 12:31:37.072 INFO [stderr]   |
Dec 19 12:31:37.072 INFO [stderr] 7 | use std::fs::File;
Dec 19 12:31:37.072 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 12:31:37.072 INFO [stderr] 
Dec 19 12:31:37.072 INFO [stderr] warning: unused imports: `CpuError`, `Cpu`, `DecoderError`
Dec 19 12:31:37.072 INFO [stderr]  --> src/main.rs:9:11
Dec 19 12:31:37.072 INFO [stderr]   |
Dec 19 12:31:37.072 INFO [stderr] 9 | use cpu::{Cpu, DecoderError, CpuError};
Dec 19 12:31:37.072 INFO [stderr]   |           ^^^  ^^^^^^^^^^^^  ^^^^^^^^
Dec 19 12:31:37.072 INFO [stderr] 
Dec 19 12:31:37.072 INFO [stderr] warning: unused imports: `Event`, `VirtualKeyCode`
Dec 19 12:31:37.072 INFO [stderr]   --> src/main.rs:10:21
Dec 19 12:31:37.072 INFO [stderr]    |
Dec 19 12:31:37.072 INFO [stderr] 10 | use glium::glutin::{VirtualKeyCode, Event};
Dec 19 12:31:37.072 INFO [stderr]    |                     ^^^^^^^^^^^^^^  ^^^^^
Dec 19 12:31:37.072 INFO [stderr] 
Dec 19 12:31:37.164 INFO [stderr] warning: unused import: `glium::glutin::VirtualKeyCode`
Dec 19 12:31:37.164 INFO [stderr]    --> src/cpu.rs:446:13
Dec 19 12:31:37.164 INFO [stderr]     |
Dec 19 12:31:37.165 INFO [stderr] 446 |         use glium::glutin::VirtualKeyCode;
Dec 19 12:31:37.165 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.165 INFO [stderr]     |
Dec 19 12:31:37.165 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 19 12:31:37.165 INFO [stderr] 
Dec 19 12:31:37.166 INFO [stderr] warning: unused import: `glium::glutin::VirtualKeyCode`
Dec 19 12:31:37.166 INFO [stderr]    --> src/cpu.rs:455:13
Dec 19 12:31:37.166 INFO [stderr]     |
Dec 19 12:31:37.166 INFO [stderr] 455 |         use glium::glutin::VirtualKeyCode;
Dec 19 12:31:37.166 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.166 INFO [stderr] 
Dec 19 12:31:37.166 INFO [stderr] warning: unused import: `glium::DisplayBuild`
Dec 19 12:31:37.166 INFO [stderr]  --> src/input.rs:3:5
Dec 19 12:31:37.166 INFO [stderr]   |
Dec 19 12:31:37.166 INFO [stderr] 3 | use glium::DisplayBuild;
Dec 19 12:31:37.166 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.166 INFO [stderr] 
Dec 19 12:31:37.166 INFO [stderr] warning: unused import: `std::thread`
Dec 19 12:31:37.166 INFO [stderr]  --> src/input.rs:4:5
Dec 19 12:31:37.166 INFO [stderr]   |
Dec 19 12:31:37.166 INFO [stderr] 4 | use std::thread;
Dec 19 12:31:37.167 INFO [stderr]   |     ^^^^^^^^^^^
Dec 19 12:31:37.167 INFO [stderr] 
Dec 19 12:31:37.167 INFO [stderr] warning: unused import: `std::time`
Dec 19 12:31:37.167 INFO [stderr]  --> src/input.rs:5:5
Dec 19 12:31:37.167 INFO [stderr]   |
Dec 19 12:31:37.167 INFO [stderr] 5 | use std::time;
Dec 19 12:31:37.167 INFO [stderr]   |     ^^^^^^^^^
Dec 19 12:31:37.167 INFO [stderr] 
Dec 19 12:31:37.167 INFO [stderr] warning: unused import: `glium::glutin`
Dec 19 12:31:37.167 INFO [stderr]  --> src/display.rs:4:5
Dec 19 12:31:37.167 INFO [stderr]   |
Dec 19 12:31:37.167 INFO [stderr] 4 | use glium::glutin;
Dec 19 12:31:37.167 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 12:31:37.167 INFO [stderr] 
Dec 19 12:31:37.167 INFO [stderr] warning: unused import: `std::path::Path`
Dec 19 12:31:37.167 INFO [stderr]  --> src/display.rs:6:5
Dec 19 12:31:37.167 INFO [stderr]   |
Dec 19 12:31:37.167 INFO [stderr] 6 | use std::path::Path;
Dec 19 12:31:37.167 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 12:31:37.167 INFO [stderr] 
Dec 19 12:31:37.167 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 12:31:37.167 INFO [stderr]  --> src/display.rs:7:5
Dec 19 12:31:37.167 INFO [stderr]   |
Dec 19 12:31:37.168 INFO [stderr] 7 | use std::fs::File;
Dec 19 12:31:37.168 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 12:31:37.168 INFO [stderr] 
Dec 19 12:31:37.168 INFO [stderr] warning: unused imports: `CpuError`, `Cpu`, `DecoderError`
Dec 19 12:31:37.168 INFO [stderr]  --> src/main.rs:9:11
Dec 19 12:31:37.168 INFO [stderr]   |
Dec 19 12:31:37.168 INFO [stderr] 9 | use cpu::{Cpu, DecoderError, CpuError};
Dec 19 12:31:37.168 INFO [stderr]   |           ^^^  ^^^^^^^^^^^^  ^^^^^^^^
Dec 19 12:31:37.168 INFO [stderr] 
Dec 19 12:31:37.172 INFO [stderr] warning: unused imports: `Event`, `VirtualKeyCode`
Dec 19 12:31:37.172 INFO [stderr]   --> src/main.rs:10:21
Dec 19 12:31:37.172 INFO [stderr]    |
Dec 19 12:31:37.172 INFO [stderr] 10 | use glium::glutin::{VirtualKeyCode, Event};
Dec 19 12:31:37.172 INFO [stderr]    |                     ^^^^^^^^^^^^^^  ^^^^^
Dec 19 12:31:37.172 INFO [stderr] 
Dec 19 12:31:37.228 INFO [stderr] warning: unreachable expression
Dec 19 12:31:37.229 INFO [stderr]    --> src/cpu.rs:264:9
Dec 19 12:31:37.229 INFO [stderr]     |
Dec 19 12:31:37.229 INFO [stderr] 264 |         "cls".to_string()
Dec 19 12:31:37.230 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.230 INFO [stderr]     |
Dec 19 12:31:37.232 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 19 12:31:37.232 INFO [stderr] 
Dec 19 12:31:37.272 INFO [stderr] warning: unreachable expression
Dec 19 12:31:37.272 INFO [stderr]    --> src/cpu.rs:480:9
Dec 19 12:31:37.272 INFO [stderr]     |
Dec 19 12:31:37.272 INFO [stderr] 480 |         format!("wkp {:#x}", self.regs.v[reg])
Dec 19 12:31:37.272 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.272 INFO [stderr]     |
Dec 19 12:31:37.272 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 19 12:31:37.272 INFO [stderr] 
Dec 19 12:31:37.280 INFO [stderr] warning: unreachable expression
Dec 19 12:31:37.281 INFO [stderr]    --> src/cpu.rs:264:9
Dec 19 12:31:37.281 INFO [stderr]     |
Dec 19 12:31:37.281 INFO [stderr] 264 |         "cls".to_string()
Dec 19 12:31:37.281 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.281 INFO [stderr]     |
Dec 19 12:31:37.282 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 19 12:31:37.282 INFO [stderr] 
Dec 19 12:31:37.350 INFO [stderr] warning: unused variable: `what`
Dec 19 12:31:37.350 INFO [stderr]   --> src/cpu.rs:75:17
Dec 19 12:31:37.351 INFO [stderr]    |
Dec 19 12:31:37.351 INFO [stderr] 75 |             Err(what) => Err(CpuError::DecoderError)
Dec 19 12:31:37.351 INFO [stderr]    |                 ^^^^ help: consider using `_what` instead
Dec 19 12:31:37.352 INFO [stderr]    |
Dec 19 12:31:37.352 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:31:37.352 INFO [stderr] 
Dec 19 12:31:37.353 INFO [stderr] warning: unused variable: `placeholder_display`
Dec 19 12:31:37.353 INFO [stderr]    --> src/cpu.rs:262:23
Dec 19 12:31:37.354 INFO [stderr]     |
Dec 19 12:31:37.354 INFO [stderr] 262 |     fn cls(&mut self, placeholder_display : u8 ) -> String  {
Dec 19 12:31:37.354 INFO [stderr]     |                       ^^^^^^^^^^^^^^^^^^^ help: consider using `_placeholder_display` instead
Dec 19 12:31:37.355 INFO [stderr] 
Dec 19 12:31:37.355 INFO [stderr] warning: unused variable: `reg`
Dec 19 12:31:37.356 INFO [stderr]    --> src/cpu.rs:478:37
Dec 19 12:31:37.356 INFO [stderr]     |
Dec 19 12:31:37.356 INFO [stderr] 478 |     fn wait_for_keypress(&mut self, reg: usize) -> String  {
Dec 19 12:31:37.357 INFO [stderr]     |                                     ^^^ help: consider using `_reg` instead
Dec 19 12:31:37.357 INFO [stderr] 
Dec 19 12:31:37.358 INFO [stderr] warning: unused variable: `title`
Dec 19 12:31:37.358 INFO [stderr]   --> src/display.rs:30:39
Dec 19 12:31:37.358 INFO [stderr]    |
Dec 19 12:31:37.358 INFO [stderr] 30 |     pub fn new(dimension: (u32, u32), title: &str) -> Result<Self, DisplayBuildError> {
Dec 19 12:31:37.359 INFO [stderr]    |                                       ^^^^^ help: consider using `_title` instead
Dec 19 12:31:37.359 INFO [stderr] 
Dec 19 12:31:37.396 INFO [stderr] warning: unreachable expression
Dec 19 12:31:37.396 INFO [stderr]    --> src/cpu.rs:480:9
Dec 19 12:31:37.396 INFO [stderr]     |
Dec 19 12:31:37.396 INFO [stderr] 480 |         format!("wkp {:#x}", self.regs.v[reg])
Dec 19 12:31:37.396 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.396 INFO [stderr]     |
Dec 19 12:31:37.397 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 19 12:31:37.397 INFO [stderr] 
Dec 19 12:31:37.448 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:31:37.448 INFO [stderr]   --> src/display.rs:99:13
Dec 19 12:31:37.448 INFO [stderr]    |
Dec 19 12:31:37.448 INFO [stderr] 99 |         let mut collision = false;
Dec 19 12:31:37.448 INFO [stderr]    |             ----^^^^^^^^^
Dec 19 12:31:37.448 INFO [stderr]    |             |
Dec 19 12:31:37.448 INFO [stderr]    |             help: remove this `mut`
Dec 19 12:31:37.448 INFO [stderr]    |
Dec 19 12:31:37.448 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 12:31:37.448 INFO [stderr] 
Dec 19 12:31:37.452 INFO [stderr] warning: field is never used: `is_closing`
Dec 19 12:31:37.452 INFO [stderr]  --> src/input.rs:8:5
Dec 19 12:31:37.452 INFO [stderr]   |
Dec 19 12:31:37.452 INFO [stderr] 8 |     is_closing : bool,
Dec 19 12:31:37.452 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.452 INFO [stderr]   |
Dec 19 12:31:37.452 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 12:31:37.452 INFO [stderr] 
Dec 19 12:31:37.452 INFO [stderr] warning: variant is never constructed: `InvalidDimensionError`
Dec 19 12:31:37.452 INFO [stderr]   --> src/display.rs:17:5
Dec 19 12:31:37.452 INFO [stderr]    |
Dec 19 12:31:37.452 INFO [stderr] 17 |     InvalidDimensionError,
Dec 19 12:31:37.452 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.452 INFO [stderr] 
Dec 19 12:31:37.580 INFO [stderr] warning: unused variable: `what`
Dec 19 12:31:37.581 INFO [stderr]   --> src/cpu.rs:75:17
Dec 19 12:31:37.581 INFO [stderr]    |
Dec 19 12:31:37.581 INFO [stderr] 75 |             Err(what) => Err(CpuError::DecoderError)
Dec 19 12:31:37.582 INFO [stderr]    |                 ^^^^ help: consider using `_what` instead
Dec 19 12:31:37.582 INFO [stderr]    |
Dec 19 12:31:37.582 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:31:37.582 INFO [stderr] 
Dec 19 12:31:37.582 INFO [stderr] warning: unused variable: `placeholder_display`
Dec 19 12:31:37.582 INFO [stderr]    --> src/cpu.rs:262:23
Dec 19 12:31:37.582 INFO [stderr]     |
Dec 19 12:31:37.582 INFO [stderr] 262 |     fn cls(&mut self, placeholder_display : u8 ) -> String  {
Dec 19 12:31:37.582 INFO [stderr]     |                       ^^^^^^^^^^^^^^^^^^^ help: consider using `_placeholder_display` instead
Dec 19 12:31:37.583 INFO [stderr] 
Dec 19 12:31:37.583 INFO [stderr] warning: unused variable: `reg`
Dec 19 12:31:37.583 INFO [stderr]    --> src/cpu.rs:478:37
Dec 19 12:31:37.583 INFO [stderr]     |
Dec 19 12:31:37.583 INFO [stderr] 478 |     fn wait_for_keypress(&mut self, reg: usize) -> String  {
Dec 19 12:31:37.583 INFO [stderr]     |                                     ^^^ help: consider using `_reg` instead
Dec 19 12:31:37.583 INFO [stderr] 
Dec 19 12:31:37.583 INFO [stderr] warning: unused variable: `title`
Dec 19 12:31:37.583 INFO [stderr]   --> src/display.rs:30:39
Dec 19 12:31:37.583 INFO [stderr]    |
Dec 19 12:31:37.583 INFO [stderr] 30 |     pub fn new(dimension: (u32, u32), title: &str) -> Result<Self, DisplayBuildError> {
Dec 19 12:31:37.583 INFO [stderr]    |                                       ^^^^^ help: consider using `_title` instead
Dec 19 12:31:37.583 INFO [stderr] 
Dec 19 12:31:37.658 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:31:37.658 INFO [stderr]   --> src/display.rs:99:13
Dec 19 12:31:37.658 INFO [stderr]    |
Dec 19 12:31:37.658 INFO [stderr] 99 |         let mut collision = false;
Dec 19 12:31:37.658 INFO [stderr]    |             ----^^^^^^^^^
Dec 19 12:31:37.658 INFO [stderr]    |             |
Dec 19 12:31:37.658 INFO [stderr]    |             help: remove this `mut`
Dec 19 12:31:37.658 INFO [stderr]    |
Dec 19 12:31:37.658 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 12:31:37.658 INFO [stderr] 
Dec 19 12:31:37.664 INFO [stderr] warning: field is never used: `is_closing`
Dec 19 12:31:37.664 INFO [stderr]  --> src/input.rs:8:5
Dec 19 12:31:37.664 INFO [stderr]   |
Dec 19 12:31:37.664 INFO [stderr] 8 |     is_closing : bool,
Dec 19 12:31:37.664 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.664 INFO [stderr]   |
Dec 19 12:31:37.664 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 12:31:37.664 INFO [stderr] 
Dec 19 12:31:37.664 INFO [stderr] warning: variant is never constructed: `InvalidDimensionError`
Dec 19 12:31:37.664 INFO [stderr]   --> src/display.rs:17:5
Dec 19 12:31:37.664 INFO [stderr]    |
Dec 19 12:31:37.664 INFO [stderr] 17 |     InvalidDimensionError,
Dec 19 12:31:37.664 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:31:37.664 INFO [stderr] 
Dec 19 12:31:37.731 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.96s
Dec 19 12:31:38.734 INFO running `"docker" "inspect" "444f8b9cd8b442872c550edf615978b4cccba3aedfbe7f524e83d75d583c98f8"`
Dec 19 12:31:38.980 INFO running `"docker" "rm" "-f" "444f8b9cd8b442872c550edf615978b4cccba3aedfbe7f524e83d75d583c98f8"`
Dec 19 12:31:39.264 INFO [stdout] 444f8b9cd8b442872c550edf615978b4cccba3aedfbe7f524e83d75d583c98f8