[INFO] cloning repository https://github.com/magey3/chip8-emu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/magey3/chip8-emu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagey3%2Fchip8-emu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagey3%2Fchip8-emu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b80ab4e1349263b8360f551b911494385c30066
[INFO] checking magey3/chip8-emu against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagey3%2Fchip8-emu" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/magey3/chip8-emu on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/magey3/chip8-emu
[INFO] finished tweaking git repo https://github.com/magey3/chip8-emu
[INFO] tweaked toml for git repo https://github.com/magey3/chip8-emu written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/magey3/chip8-emu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35b45e94bd7c235d844c200435017ff0088db0670a4eb3428267e4a5bbee676f
[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" "35b45e94bd7c235d844c200435017ff0088db0670a4eb3428267e4a5bbee676f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35b45e94bd7c235d844c200435017ff0088db0670a4eb3428267e4a5bbee676f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35b45e94bd7c235d844c200435017ff0088db0670a4eb3428267e4a5bbee676f", kill_on_drop: false }`
[INFO] [stdout] 35b45e94bd7c235d844c200435017ff0088db0670a4eb3428267e4a5bbee676f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17d7b34428ecd05c70c4a077ac54a096278efa186b6837a07629cfb2a9684161
[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" "17d7b34428ecd05c70c4a077ac54a096278efa186b6837a07629cfb2a9684161", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking chip8-emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::decode::*`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::decode::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::execute::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::execute::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::decode::*`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::decode::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::execute::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::execute::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::opcode::*`
[INFO] [stdout]   --> src/main.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 |     use crate::opcode::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/main.rs:249:10
[INFO] [stdout]     |
[INFO] [stdout] 249 | fn fetch(state: &mut State) -> u16 {
[INFO] [stdout]     |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vx`
[INFO] [stdout]    --> src/execute.rs:121:24
[INFO] [stdout]     |
[INFO] [stdout] 121 |         OpCode::DrawSprite { vx, vy, height } => {
[INFO] [stdout]     |                              ^^ help: try ignoring the field: `vx: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vy`
[INFO] [stdout]    --> src/execute.rs:121:28
[INFO] [stdout]     |
[INFO] [stdout] 121 |         OpCode::DrawSprite { vx, vy, height } => {
[INFO] [stdout]     |                                  ^^ help: try ignoring the field: `vy: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]    --> src/execute.rs:121:32
[INFO] [stdout]     |
[INFO] [stdout] 121 |         OpCode::DrawSprite { vx, vy, height } => {
[INFO] [stdout]     |                                      ^^^^^^ help: try ignoring the field: `height: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/execute.rs:124:32
[INFO] [stdout]     |
[INFO] [stdout] 124 |         OpCode::SkipNextIfKeyPressed(key) => {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/execute.rs:127:32
[INFO] [stdout]     |
[INFO] [stdout] 127 |         OpCode::SkipNextIfNotPressed(key) => {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vx`
[INFO] [stdout]    --> src/execute.rs:133:18
[INFO] [stdout]     |
[INFO] [stdout] 133 |         OpCode::GetKey(vx) => {
[INFO] [stdout]     |                        ^^ help: if this is intentional, prefix it with an underscore: `_vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vx`
[INFO] [stdout]    --> src/execute.rs:145:36
[INFO] [stdout]     |
[INFO] [stdout] 145 |         OpCode::SetIndexToSpriteLocation(vx) => {
[INFO] [stdout]     |                                          ^^ help: if this is intentional, prefix it with an underscore: `_vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vx`
[INFO] [stdout]    --> src/execute.rs:148:16
[INFO] [stdout]     |
[INFO] [stdout] 148 |         OpCode::FX33(vx) => {
[INFO] [stdout]     |                      ^^ help: if this is intentional, prefix it with an underscore: `_vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]  --> src/decode.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn decode(state: &State, opcode: u16) -> OpCode {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `execute`
[INFO] [stdout]  --> src/execute.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn execute(state: &mut State, opcode: OpCode) {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `OpCode`
[INFO] [stdout]  --> src/opcode.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum OpCode {
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:234:5
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fetch`
[INFO] [stdout]    --> src/main.rs:249:4
[INFO] [stdout]     |
[INFO] [stdout] 249 | fn fetch(state: &mut State) -> u16 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/main.rs:249:10
[INFO] [stdout]     |
[INFO] [stdout] 249 | fn fetch(state: &mut State) -> u16 {
[INFO] [stdout]     |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vx`
[INFO] [stdout]    --> src/execute.rs:121:24
[INFO] [stdout]     |
[INFO] [stdout] 121 |         OpCode::DrawSprite { vx, vy, height } => {
[INFO] [stdout]     |                              ^^ help: try ignoring the field: `vx: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vy`
[INFO] [stdout]    --> src/execute.rs:121:28
[INFO] [stdout]     |
[INFO] [stdout] 121 |         OpCode::DrawSprite { vx, vy, height } => {
[INFO] [stdout]     |                                  ^^ help: try ignoring the field: `vy: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]    --> src/execute.rs:121:32
[INFO] [stdout]     |
[INFO] [stdout] 121 |         OpCode::DrawSprite { vx, vy, height } => {
[INFO] [stdout]     |                                      ^^^^^^ help: try ignoring the field: `height: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/execute.rs:124:32
[INFO] [stdout]     |
[INFO] [stdout] 124 |         OpCode::SkipNextIfKeyPressed(key) => {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/execute.rs:127:32
[INFO] [stdout]     |
[INFO] [stdout] 127 |         OpCode::SkipNextIfNotPressed(key) => {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vx`
[INFO] [stdout]    --> src/execute.rs:133:18
[INFO] [stdout]     |
[INFO] [stdout] 133 |         OpCode::GetKey(vx) => {
[INFO] [stdout]     |                        ^^ help: if this is intentional, prefix it with an underscore: `_vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vx`
[INFO] [stdout]    --> src/execute.rs:145:36
[INFO] [stdout]     |
[INFO] [stdout] 145 |         OpCode::SetIndexToSpriteLocation(vx) => {
[INFO] [stdout]     |                                          ^^ help: if this is intentional, prefix it with an underscore: `_vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vx`
[INFO] [stdout]    --> src/execute.rs:148:16
[INFO] [stdout]     |
[INFO] [stdout] 148 |         OpCode::FX33(vx) => {
[INFO] [stdout]     |                      ^^ help: if this is intentional, prefix it with an underscore: `_vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CallMCodeSubroutine`
[INFO] [stdout]  --> src/opcode.rs:2:2
[INFO] [stdout]   |
[INFO] [stdout] 2 |     CallMCodeSubroutine(u16),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fetch`
[INFO] [stdout]    --> src/main.rs:249:4
[INFO] [stdout]     |
[INFO] [stdout] 249 | fn fetch(state: &mut State) -> u16 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.48s
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "17d7b34428ecd05c70c4a077ac54a096278efa186b6837a07629cfb2a9684161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17d7b34428ecd05c70c4a077ac54a096278efa186b6837a07629cfb2a9684161", kill_on_drop: false }`
[INFO] [stdout] 17d7b34428ecd05c70c4a077ac54a096278efa186b6837a07629cfb2a9684161