[INFO] cloning repository https://github.com/JorinTielen/maki8
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JorinTielen/maki8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJorinTielen%2Fmaki8"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJorinTielen%2Fmaki8'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6d02c39a6426ac197f9b12f340b6868c8d99e9d9
[INFO] checking JorinTielen/maki8 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJorinTielen%2Fmaki8" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JorinTielen/maki8 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/JorinTielen/maki8
[INFO] finished tweaking git repo https://github.com/JorinTielen/maki8
[INFO] tweaked toml for git repo https://github.com/JorinTielen/maki8 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/JorinTielen/maki8 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 81ad768638a53feaaef1554abcee12a270e6537852ba65ddd0f1f951ea7913ac
[INFO] running `"docker" "start" "-a" "81ad768638a53feaaef1554abcee12a270e6537852ba65ddd0f1f951ea7913ac"`
[INFO] [stderr]     Checking num-traits v0.2.0
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking sdl2 v0.31.0
[INFO] [stderr]     Checking maki8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `sdl2::pixels::Color`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use sdl2::pixels::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `frame` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let mut frame = 0;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_frame` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/cpu.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let y = ((self.op & 0x00F0) >> 4) as usize;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::pixels::Color`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use sdl2::pixels::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/cpu.rs:165:21
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 let mut value = rng.gen::<u8>();
[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: method is never used: `start`
[INFO] [stderr]   --> src/chip8.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn start(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `WaitForInput`
[INFO] [stderr]  --> src/cpu.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     WaitForInput,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `gfx`
[INFO] [stderr]   --> src/cpu.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     gfx: [u8; 64 * 32], //Display buffer
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_byte`
[INFO] [stderr]   --> src/ram.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn read_byte(&self, i: usize) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_sdl_gl_driver`
[INFO] [stderr]   --> src/main.rs:75:1
[INFO] [stderr]    |
[INFO] [stderr] 75 | fn find_sdl_gl_driver() -> Option<u32> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `V` should have a snake case name
[INFO] [stderr]   --> src/cpu.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     V: [u8; 16], //V Registers
[INFO] [stderr]    |     ^ help: convert the identifier to snake case: `v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `core::num::<impl u8>::wrapping_add` that must be used
[INFO] [stderr]    --> src/cpu.rs:167:17
[INFO] [stderr]     |
[INFO] [stderr] 167 |                 value.wrapping_add(kk); //Should this overflow? probably.
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this returns the result of the operation, without modifying the original
[INFO] [stderr] 
[INFO] [stderr] warning: variable `frame` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let mut frame = 0;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_frame` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/cpu.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let y = ((self.op & 0x00F0) >> 4) as usize;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/cpu.rs:165:21
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 let mut value = rng.gen::<u8>();
[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: method is never used: `start`
[INFO] [stderr]   --> src/chip8.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn start(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `WaitForInput`
[INFO] [stderr]  --> src/cpu.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     WaitForInput,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `gfx`
[INFO] [stderr]   --> src/cpu.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     gfx: [u8; 64 * 32], //Display buffer
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_byte`
[INFO] [stderr]   --> src/ram.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn read_byte(&self, i: usize) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_sdl_gl_driver`
[INFO] [stderr]   --> src/main.rs:75:1
[INFO] [stderr]    |
[INFO] [stderr] 75 | fn find_sdl_gl_driver() -> Option<u32> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `V` should have a snake case name
[INFO] [stderr]   --> src/cpu.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     V: [u8; 16], //V Registers
[INFO] [stderr]    |     ^ help: convert the identifier to snake case: `v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `core::num::<impl u8>::wrapping_add` that must be used
[INFO] [stderr]    --> src/cpu.rs:167:17
[INFO] [stderr]     |
[INFO] [stderr] 167 |                 value.wrapping_add(kk); //Should this overflow? probably.
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this returns the result of the operation, without modifying the original
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.43s
[INFO] running `"docker" "inspect" "81ad768638a53feaaef1554abcee12a270e6537852ba65ddd0f1f951ea7913ac"`
[INFO] running `"docker" "rm" "-f" "81ad768638a53feaaef1554abcee12a270e6537852ba65ddd0f1f951ea7913ac"`
[INFO] [stdout] 81ad768638a53feaaef1554abcee12a270e6537852ba65ddd0f1f951ea7913ac