[INFO] cloning repository https://github.com/colbyjayallen/Chip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/colbyjayallen/Chip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolbyjayallen%2FChip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolbyjayallen%2FChip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf192a335c769704968d64f4a4f19de813c43533
[INFO] checking colbyjayallen/Chip8 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolbyjayallen%2FChip8" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/colbyjayallen/Chip8 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/colbyjayallen/Chip8
[INFO] finished tweaking git repo https://github.com/colbyjayallen/Chip8
[INFO] tweaked toml for git repo https://github.com/colbyjayallen/Chip8 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/colbyjayallen/Chip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f01b3afbdb934282d5222bf1b22a45875cac1db2d591fdb5279d11f1a05c26f9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f01b3afbdb934282d5222bf1b22a45875cac1db2d591fdb5279d11f1a05c26f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f01b3afbdb934282d5222bf1b22a45875cac1db2d591fdb5279d11f1a05c26f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f01b3afbdb934282d5222bf1b22a45875cac1db2d591fdb5279d11f1a05c26f9", kill_on_drop: false }`
[INFO] [stdout] f01b3afbdb934282d5222bf1b22a45875cac1db2d591fdb5279d11f1a05c26f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fbdc568736f0dc14dbab3efb2393e9039221cb31b2882997c188df66897f1b6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8fbdc568736f0dc14dbab3efb2393e9039221cb31b2882997c188df66897f1b6", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Memory`
[INFO] [stdout]  --> src/memory.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Memory {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/memory.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub fn new() -> Memory {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset_memory`
[INFO] [stdout]   --> src/memory.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn reset_memory(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_at_address`
[INFO] [stdout]   --> src/memory.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn get_at_address(&mut self, address: usize) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_at_address`
[INFO] [stdout]   --> src/memory.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn set_at_address(&mut self, address: usize, data: u8) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `initialize_memory`
[INFO] [stdout]   --> src/memory.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn initialize_memory() -> [u8; 4096] {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Cpu`
[INFO] [stdout]  --> src/cpu.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Cpu {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cpu.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new() -> Cpu {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute_instruction`
[INFO] [stdout]   --> src/cpu.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn execute_instruction(&mut self, (a, b, c, d): (u8, u8, u8, u8)) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `op_1nnn`
[INFO] [stdout]   --> src/cpu.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn op_1nnn(&mut self, new_value: u16) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `op_6xnn`
[INFO] [stdout]   --> src/cpu.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn op_6xnn(&mut self, reg_index: u8, new_value: u8) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `op_7xnn`
[INFO] [stdout]   --> src/cpu.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn op_7xnn(&mut self, reg_index: u8, value_to_add: u8) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `op_annn`
[INFO] [stdout]   --> src/cpu.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn op_annn(&mut self, new_value: u16) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_last_byte`
[INFO] [stdout]   --> src/cpu.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn get_last_byte((_a, _b, c, d): (u8, u8, u8, u8)) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_last_tribble`
[INFO] [stdout]   --> src/cpu.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn get_last_tribble((_a, b, c, d): (u8, u8, u8, u8)) -> u16 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]  --> src/cpu.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     stack: Vec<u16>, // Use pop and push on the stack.
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delay_timer`
[INFO] [stdout]  --> src/cpu.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     delay_timer: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]  --> src/cpu.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     sound_timer: u8
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "8fbdc568736f0dc14dbab3efb2393e9039221cb31b2882997c188df66897f1b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fbdc568736f0dc14dbab3efb2393e9039221cb31b2882997c188df66897f1b6", kill_on_drop: false }`
[INFO] [stdout] 8fbdc568736f0dc14dbab3efb2393e9039221cb31b2882997c188df66897f1b6