[INFO] cloning repository https://github.com/squablyScientist/chip8-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/squablyScientist/chip8-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FsquablyScientist%2Fchip8-rust"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FsquablyScientist%2Fchip8-rust'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 20a3b6f01b05b4f4e44d4695942b21cbdbe04a62
[INFO] checking squablyScientist/chip8-rust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FsquablyScientist%2Fchip8-rust" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/squablyScientist/chip8-rust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/squablyScientist/chip8-rust
[INFO] finished tweaking git repo https://github.com/squablyScientist/chip8-rust
[INFO] tweaked toml for git repo https://github.com/squablyScientist/chip8-rust written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/squablyScientist/chip8-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 035e4655d5bef541532514fd16c6b1e74a6bbfdfac0a72d591843e79c13c456d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "035e4655d5bef541532514fd16c6b1e74a6bbfdfac0a72d591843e79c13c456d"`
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]     Checking rand v0.4.5
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `pixel` is never read
[INFO] [stderr]    --> src/cpu.rs:367:21
[INFO] [stderr]     |
[INFO] [stderr] 367 |                 let mut pixel: u8 = 0;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_mem`
[INFO] [stderr]   --> src/cpu.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn dump_mem(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_reg`
[INFO] [stderr]    --> src/cpu.rs:131:5
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub fn dump_reg(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `V` should have a snake case name
[INFO] [stderr]   --> src/cpu.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub  V: [u8; 16],   
[INFO] [stderr]    |          ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `I` should have a snake case name
[INFO] [stderr]   --> src/cpu.rs:30:10
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub  I: u16,        
[INFO] [stderr]    |          ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `pixel` is never read
[INFO] [stderr]    --> src/cpu.rs:367:21
[INFO] [stderr]     |
[INFO] [stderr] 367 |                 let mut pixel: u8 = 0;
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_mem`
[INFO] [stderr]   --> src/cpu.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn dump_mem(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_reg`
[INFO] [stderr]    --> src/cpu.rs:131:5
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub fn dump_reg(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `V` should have a snake case name
[INFO] [stderr]   --> src/cpu.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub  V: [u8; 16],   
[INFO] [stderr]    |          ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `I` should have a snake case name
[INFO] [stderr]   --> src/cpu.rs:30:10
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub  I: u16,        
[INFO] [stderr]    |          ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `"docker" "inspect" "035e4655d5bef541532514fd16c6b1e74a6bbfdfac0a72d591843e79c13c456d"`
[INFO] running `"docker" "rm" "-f" "035e4655d5bef541532514fd16c6b1e74a6bbfdfac0a72d591843e79c13c456d"`
[INFO] [stdout] 035e4655d5bef541532514fd16c6b1e74a6bbfdfac0a72d591843e79c13c456d