[INFO] cloning repository https://github.com/troyedwardsjr/chip-8-emu-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/troyedwardsjr/chip-8-emu-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftroyedwardsjr%2Fchip-8-emu-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftroyedwardsjr%2Fchip-8-emu-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0398c7b3c34fcbe41c3d2f629da31439a1547e22
[INFO] testing troyedwardsjr/chip-8-emu-rs against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftroyedwardsjr%2Fchip-8-emu-rs" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/troyedwardsjr/chip-8-emu-rs on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/troyedwardsjr/chip-8-emu-rs
[INFO] finished tweaking git repo https://github.com/troyedwardsjr/chip-8-emu-rs
[INFO] tweaked toml for git repo https://github.com/troyedwardsjr/chip-8-emu-rs written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/troyedwardsjr/chip-8-emu-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9226d5ea54578f500bd68c75ea28ada698ab9981220f1009535de341082bf31
[INFO] running `Command { std: "docker" "start" "-a" "f9226d5ea54578f500bd68c75ea28ada698ab9981220f1009535de341082bf31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9226d5ea54578f500bd68c75ea28ada698ab9981220f1009535de341082bf31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9226d5ea54578f500bd68c75ea28ada698ab9981220f1009535de341082bf31", kill_on_drop: false }`
[INFO] [stdout] f9226d5ea54578f500bd68c75ea28ada698ab9981220f1009535de341082bf31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f81467526b52a5bb48bbf49cee191832ebcf516afeaa0a408aeca8a880a8221d
[INFO] running `Command { std: "docker" "start" "-a" "f81467526b52a5bb48bbf49cee191832ebcf516afeaa0a408aeca8a880a8221d", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip-8-emu-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `emu`
[INFO] [stdout]  --> src/main.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 |   let mut emu = core::Emu::new();
[INFO] [stdout]   |           ^^^ help: if this is intentional, prefix it with an underscore: `_emu`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 |   let mut emu = core::Emu::new();
[INFO] [stdout]   |       ----^^^
[INFO] [stdout]   |       |
[INFO] [stdout]   |       help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "f81467526b52a5bb48bbf49cee191832ebcf516afeaa0a408aeca8a880a8221d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f81467526b52a5bb48bbf49cee191832ebcf516afeaa0a408aeca8a880a8221d", kill_on_drop: false }`
[INFO] [stdout] f81467526b52a5bb48bbf49cee191832ebcf516afeaa0a408aeca8a880a8221d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 764c4b420a59361ce3d5eeaa0e47a92c84a1dfd56b8ae31a814babbfd3418d6c
[INFO] running `Command { std: "docker" "start" "-a" "764c4b420a59361ce3d5eeaa0e47a92c84a1dfd56b8ae31a814babbfd3418d6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip-8-emu-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `emu`
[INFO] [stdout]  --> src/main.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 |   let mut emu = core::Emu::new();
[INFO] [stdout]   |           ^^^ help: if this is intentional, prefix it with an underscore: `_emu`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 |   let mut emu = core::Emu::new();
[INFO] [stdout]   |       ----^^^
[INFO] [stdout]   |       |
[INFO] [stdout]   |       help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "764c4b420a59361ce3d5eeaa0e47a92c84a1dfd56b8ae31a814babbfd3418d6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "764c4b420a59361ce3d5eeaa0e47a92c84a1dfd56b8ae31a814babbfd3418d6c", kill_on_drop: false }`
[INFO] [stdout] 764c4b420a59361ce3d5eeaa0e47a92c84a1dfd56b8ae31a814babbfd3418d6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1ad283b23827d3cc3475118a51ff3d674623924dfee7c3b160934028b5563fc7
[INFO] running `Command { std: "docker" "start" "-a" "1ad283b23827d3cc3475118a51ff3d674623924dfee7c3b160934028b5563fc7", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `emu`
[INFO] [stderr]  --> src/main.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 |   let mut emu = core::Emu::new();
[INFO] [stderr]   |           ^^^ help: if this is intentional, prefix it with an underscore: `_emu`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:5:7
[INFO] [stderr]   |
[INFO] [stderr] 5 |   let mut emu = core::Emu::new();
[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: `chip-8-emu-rs` (bin "chip-8-emu-rs" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chip_8_emu_rs-44da0dc684a3a4d6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1ad283b23827d3cc3475118a51ff3d674623924dfee7c3b160934028b5563fc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ad283b23827d3cc3475118a51ff3d674623924dfee7c3b160934028b5563fc7", kill_on_drop: false }`
[INFO] [stdout] 1ad283b23827d3cc3475118a51ff3d674623924dfee7c3b160934028b5563fc7