[INFO] cloning repository https://github.com/JorgeMartinezG/chip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JorgeMartinezG/chip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJorgeMartinezG%2Fchip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJorgeMartinezG%2Fchip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 275a2481c184e55c556931225a66de7b232d7795
[INFO] building JorgeMartinezG/chip8 against master#ee1c3b385b6673b6ef37d80dfabe048e993c2ae2 for pr-102832-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJorgeMartinezG%2Fchip8" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JorgeMartinezG/chip8 on toolchain ee1c3b385b6673b6ef37d80dfabe048e993c2ae2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ee1c3b385b6673b6ef37d80dfabe048e993c2ae2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JorgeMartinezG/chip8
[INFO] finished tweaking git repo https://github.com/JorgeMartinezG/chip8
[INFO] tweaked toml for git repo https://github.com/JorgeMartinezG/chip8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/JorgeMartinezG/chip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ee1c3b385b6673b6ef37d80dfabe048e993c2ae2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.3.3
[INFO] [stderr]   Downloaded fuchsia-zircon v0.3.3
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded winapi v0.3.6
[INFO] [stderr]   Downloaded gdi32-sys v0.1.2
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded rayon v0.8.2
[INFO] [stderr]   Downloaded sdl2 v0.31.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.40
[INFO] [stderr]   Downloaded user32-sys v0.1.3
[INFO] [stderr]   Downloaded minifb v0.10.7
[INFO] [stderr]   Downloaded libc v0.2.43
[INFO] [stderr]   Downloaded x11-dl v2.14.0
[INFO] [stderr]   Downloaded lazy_static v1.2.0
[INFO] [stderr]   Downloaded memoffset v0.2.1
[INFO] [stderr]   Downloaded nodrop v0.1.12
[INFO] [stderr]   Downloaded arrayvec v0.4.7
[INFO] [stderr]   Downloaded cc v1.0.25
[INFO] [stderr]   Downloaded scopeguard v0.3.3
[INFO] [stderr]   Downloaded crossbeam-utils v0.2.2
[INFO] [stderr]   Downloaded num v0.1.42
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded crossbeam-epoch v0.3.1
[INFO] [stderr]   Downloaded rayon-core v1.4.1
[INFO] [stderr]   Downloaded num-traits v0.2.6
[INFO] [stderr]   Downloaded lazy_static v0.2.11
[INFO] [stderr]   Downloaded rand v0.3.22
[INFO] [stderr]   Downloaded time v0.1.40
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded num-iter v0.1.37
[INFO] [stderr]   Downloaded crossbeam-deque v0.2.0
[INFO] [stderr]   Downloaded sdl2-sys v0.31.0
[INFO] [stderr]   Downloaded orbclient v0.3.17
[INFO] [stderr]   Downloaded num_cpus v1.8.0
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded cfg-if v0.1.6
[INFO] [stderr]   Downloaded pkg-config v0.3.14
[INFO] [stderr]   Downloaded rand v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+ee1c3b385b6673b6ef37d80dfabe048e993c2ae2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 418086457f2334c69d6098e426596f6b29c40f312392d68ccbb48c70755e66fb
[INFO] running `Command { std: "docker" "start" "-a" "418086457f2334c69d6098e426596f6b29c40f312392d68ccbb48c70755e66fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "418086457f2334c69d6098e426596f6b29c40f312392d68ccbb48c70755e66fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "418086457f2334c69d6098e426596f6b29c40f312392d68ccbb48c70755e66fb", kill_on_drop: false }`
[INFO] [stdout] 418086457f2334c69d6098e426596f6b29c40f312392d68ccbb48c70755e66fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+ee1c3b385b6673b6ef37d80dfabe048e993c2ae2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30fe5799a8959f6bba648512d335df2acb613a9b851a8f069d04b232346d3607
[INFO] running `Command { std: "docker" "start" "-a" "30fe5799a8959f6bba648512d335df2acb613a9b851a8f069d04b232346d3607", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling x11-dl v2.14.0
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling minifb v0.10.7
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling chip8-emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     file.read_to_end(&mut data);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:99:3
[INFO] [stdout]    |
[INFO] [stdout] 99 |         window.update_with_buffer(&buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cpu.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |         write!(f, "pc: {:#X}\n", self.pc);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cpu.rs:328:9
[INFO] [stdout]     |
[INFO] [stdout] 328 |         write!(f, "vx: ");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cpu.rs:330:13
[INFO] [stdout]     |
[INFO] [stdout] 330 |             write!(f, "{:#X} ", *item);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cpu.rs:332:9
[INFO] [stdout]     |
[INFO] [stdout] 332 |         write!(f, "\n");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.88s
[INFO] running `Command { std: "docker" "inspect" "30fe5799a8959f6bba648512d335df2acb613a9b851a8f069d04b232346d3607", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30fe5799a8959f6bba648512d335df2acb613a9b851a8f069d04b232346d3607", kill_on_drop: false }`
[INFO] [stdout] 30fe5799a8959f6bba648512d335df2acb613a9b851a8f069d04b232346d3607
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+ee1c3b385b6673b6ef37d80dfabe048e993c2ae2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2dd7d85d2ab123b7ceab3ad0a9d5abe7b2d23ba1c4e76be815265e562650a480
[INFO] running `Command { std: "docker" "start" "-a" "2dd7d85d2ab123b7ceab3ad0a9d5abe7b2d23ba1c4e76be815265e562650a480", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8-emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     file.read_to_end(&mut data);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:99:3
[INFO] [stdout]    |
[INFO] [stdout] 99 |         window.update_with_buffer(&buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cpu.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |         write!(f, "pc: {:#X}\n", self.pc);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cpu.rs:328:9
[INFO] [stdout]     |
[INFO] [stdout] 328 |         write!(f, "vx: ");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cpu.rs:330:13
[INFO] [stdout]     |
[INFO] [stdout] 330 |             write!(f, "{:#X} ", *item);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cpu.rs:332:9
[INFO] [stdout]     |
[INFO] [stdout] 332 |         write!(f, "\n");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "2dd7d85d2ab123b7ceab3ad0a9d5abe7b2d23ba1c4e76be815265e562650a480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dd7d85d2ab123b7ceab3ad0a9d5abe7b2d23ba1c4e76be815265e562650a480", kill_on_drop: false }`
[INFO] [stdout] 2dd7d85d2ab123b7ceab3ad0a9d5abe7b2d23ba1c4e76be815265e562650a480