[INFO] cloning repository https://github.com/mr-m0nkey/chip-8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mr-m0nkey/chip-8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmr-m0nkey%2Fchip-8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmr-m0nkey%2Fchip-8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d82d62ef8e9432f3a244f51d017075f75e5bfef
[INFO] testing mr-m0nkey/chip-8 against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmr-m0nkey%2Fchip-8" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mr-m0nkey/chip-8 on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mr-m0nkey/chip-8
[INFO] finished tweaking git repo https://github.com/mr-m0nkey/chip-8
[INFO] tweaked toml for git repo https://github.com/mr-m0nkey/chip-8 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mr-m0nkey/chip-8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] testing mr-m0nkey/chip-8 against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmr-m0nkey%2Fchip-8" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mr-m0nkey/chip-8 on toolchain b642703cf9526da1e72c0b6755753b939a9c6b6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mr-m0nkey/chip-8
[INFO] finished tweaking git repo https://github.com/mr-m0nkey/chip-8
[INFO] tweaked toml for git repo https://github.com/mr-m0nkey/chip-8 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mr-m0nkey/chip-8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 900cdf0129f71a1e85c4b529ab742d4158d8b72e7071967e05e20c75b02d3dea
[INFO] running `Command { std: "docker" "start" "-a" "900cdf0129f71a1e85c4b529ab742d4158d8b72e7071967e05e20c75b02d3dea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "900cdf0129f71a1e85c4b529ab742d4158d8b72e7071967e05e20c75b02d3dea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "900cdf0129f71a1e85c4b529ab742d4158d8b72e7071967e05e20c75b02d3dea", kill_on_drop: false }`
[INFO] [stdout] 900cdf0129f71a1e85c4b529ab742d4158d8b72e7071967e05e20c75b02d3dea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c60bd9ed5a550af6bae38b0f230377e2b7c1c7be99d138ecd5ebab1f13e3a6a
[INFO] running `Command { std: "docker" "start" "-a" "1c60bd9ed5a550af6bae38b0f230377e2b7c1c7be99d138ecd5ebab1f13e3a6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
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[INFO] [stderr]    Compiling rand_chacha v0.2.1
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[INFO] [stderr]    Compiling num-traits v0.1.43
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[INFO] [stderr]    Compiling alsa-sys v0.1.2
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[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]    Compiling draw_state v0.8.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling adler32 v1.0.4
[INFO] [stderr]    Compiling num-derive v0.2.5
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[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling gfx_core v0.9.2
[INFO] [stderr]    Compiling lyon_path v0.13.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
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[INFO] [stderr]    Compiling osmesa-sys v0.1.2
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[INFO] [stderr]    Compiling generic-array v0.12.3
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[INFO] [stderr]    Compiling uuid v0.8.1
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[INFO] [stderr]    Compiling cpal v0.8.2
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[INFO] [stderr]    Compiling lyon_algorithms v0.13.4
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]    Compiling jpeg-decoder v0.1.18
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]    Compiling podio v0.1.6
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling claxon v0.4.2
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling zip v0.5.4
[INFO] [stderr]    Compiling gilrs v0.7.3
[INFO] [stderr]    Compiling directories v2.0.2
[INFO] [stderr]    Compiling image v0.22.4
[INFO] [stderr]    Compiling lyon v0.13.5
[INFO] [stderr]    Compiling ggez v0.5.1
[INFO] [stderr]    Compiling glyph_brush v0.5.4
[INFO] [stderr]    Compiling gfx v0.18.2
[INFO] [stderr]    Compiling smart-default v0.5.2
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling smithay-client-toolkit v0.4.6
[INFO] [stderr]    Compiling winit v0.19.5
[INFO] [stderr]    Compiling glutin v0.20.1
[INFO] [stderr]    Compiling gfx_window_glutin v0.30.0
[INFO] [stderr]    Compiling rodio v0.9.0
[INFO] [stderr]    Compiling chip_8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `waiting_for_keypress` is never read
[INFO] [stdout]   --> src/cpu.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Cpu {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub waiting_for_keypress: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/keyboard.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Keyboard {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn new() -> Keyboard {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u8>::checked_sub` that must be used
[INFO] [stdout]    --> src/cpu.rs:150:25
[INFO] [stdout]     |
[INFO] [stdout] 150 |                         self.v[x as usize].checked_sub(self.v[y as usize]);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this returns the result of the operation, without modifying the original
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 150 |                         let _ = self.v[x as usize].checked_sub(self.v[y as usize]);
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "1c60bd9ed5a550af6bae38b0f230377e2b7c1c7be99d138ecd5ebab1f13e3a6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c60bd9ed5a550af6bae38b0f230377e2b7c1c7be99d138ecd5ebab1f13e3a6a", kill_on_drop: false }`
[INFO] [stdout] 1c60bd9ed5a550af6bae38b0f230377e2b7c1c7be99d138ecd5ebab1f13e3a6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68e0f7e7ef7f4c8e06a33041977e1702c388cba61d39c37dc0c644f03860e962
[INFO] running `Command { std: "docker" "start" "-a" "68e0f7e7ef7f4c8e06a33041977e1702c388cba61d39c37dc0c644f03860e962", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip_8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `waiting_for_keypress` is never read
[INFO] [stdout]   --> src/cpu.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Cpu {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub waiting_for_keypress: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/keyboard.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Keyboard {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn new() -> Keyboard {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u8>::checked_sub` that must be used
[INFO] [stdout]    --> src/cpu.rs:150:25
[INFO] [stdout]     |
[INFO] [stdout] 150 |                         self.v[x as usize].checked_sub(self.v[y as usize]);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this returns the result of the operation, without modifying the original
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 150 |                         let _ = self.v[x as usize].checked_sub(self.v[y as usize]);
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "68e0f7e7ef7f4c8e06a33041977e1702c388cba61d39c37dc0c644f03860e962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68e0f7e7ef7f4c8e06a33041977e1702c388cba61d39c37dc0c644f03860e962", kill_on_drop: false }`
[INFO] [stdout] 68e0f7e7ef7f4c8e06a33041977e1702c388cba61d39c37dc0c644f03860e962
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e12d5552e2b510c4e5948826331bf869845a338a54081218c5afaf88b62fc4b
[INFO] running `Command { std: "docker" "start" "-a" "5e12d5552e2b510c4e5948826331bf869845a338a54081218c5afaf88b62fc4b", kill_on_drop: false }`
[INFO] [stderr] warning: field `waiting_for_keypress` is never read
[INFO] [stderr]   --> src/cpu.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct Cpu {
[INFO] [stderr]    |            --- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 21 |     pub waiting_for_keypress: bool,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> src/keyboard.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | impl Keyboard {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 7 |     pub fn new() -> Keyboard {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `core::num::<impl u8>::checked_sub` that must be used
[INFO] [stderr]    --> src/cpu.rs:150:25
[INFO] [stderr]     |
[INFO] [stderr] 150 |                         self.v[x as usize].checked_sub(self.v[y as usize]);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this returns the result of the operation, without modifying the original
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 150 |                         let _ = self.v[x as usize].checked_sub(self.v[y as usize]);
[INFO] [stderr]     |                         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `chip_8` (bin "chip_8" test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chip_8-6b7df5d00d0ed7ea)
[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" "5e12d5552e2b510c4e5948826331bf869845a338a54081218c5afaf88b62fc4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e12d5552e2b510c4e5948826331bf869845a338a54081218c5afaf88b62fc4b", kill_on_drop: false }`
[INFO] [stdout] 5e12d5552e2b510c4e5948826331bf869845a338a54081218c5afaf88b62fc4b