[INFO] cloning repository https://github.com/EDDxample/chip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EDDxample/chip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEDDxample%2Fchip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEDDxample%2Fchip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a46c8a310727fd5996c19c38787a4bddca5d5ff3
[INFO] checking EDDxample/chip8 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEDDxample%2Fchip8" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EDDxample/chip8 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EDDxample/chip8
[INFO] finished tweaking git repo https://github.com/EDDxample/chip8
[INFO] tweaked toml for git repo https://github.com/EDDxample/chip8 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/EDDxample/chip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_syscall v0.2.4
[INFO] [stderr]   Downloaded libc v0.2.82
[INFO] [stderr]   Downloaded termion v1.5.5
[INFO] [stderr]   Downloaded redox_termios v0.1.2
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2ca65c90bd8e8ac72d8cfd4fd39f8699b1c9942947e4b8a4be3242e4027b79a5
[INFO] running `Command { std: "docker" "start" "-a" "2ca65c90bd8e8ac72d8cfd4fd39f8699b1c9942947e4b8a4be3242e4027b79a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ca65c90bd8e8ac72d8cfd4fd39f8699b1c9942947e4b8a4be3242e4027b79a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ca65c90bd8e8ac72d8cfd4fd39f8699b1c9942947e4b8a4be3242e4027b79a5", kill_on_drop: false }`
[INFO] [stdout] 2ca65c90bd8e8ac72d8cfd4fd39f8699b1c9942947e4b8a4be3242e4027b79a5
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ed59a101c3b81b07244298094f1dd8f9c12226b1313f6f6c7756d1aea3dcfe5
[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" "0ed59a101c3b81b07244298094f1dd8f9c12226b1313f6f6c7756d1aea3dcfe5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking chip8emul v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]   --> src/cpu.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     sound_timer: u8, // plays a beep
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]   --> src/cpu.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     sound_timer: u8, // plays a beep
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.59s
[INFO] running `Command { std: "docker" "inspect" "0ed59a101c3b81b07244298094f1dd8f9c12226b1313f6f6c7756d1aea3dcfe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ed59a101c3b81b07244298094f1dd8f9c12226b1313f6f6c7756d1aea3dcfe5", kill_on_drop: false }`
[INFO] [stdout] 0ed59a101c3b81b07244298094f1dd8f9c12226b1313f6f6c7756d1aea3dcfe5