[INFO] cloning repository https://github.com/Krystex/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/Krystex/Chip-8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKrystex%2FChip-8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKrystex%2FChip-8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 55c126bb77a58276dccc1d4c5c57a4bd8670aa96
[INFO] testing Krystex/Chip-8 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKrystex%2FChip-8" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Krystex/Chip-8 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Krystex/Chip-8
[INFO] finished tweaking git repo https://github.com/Krystex/Chip-8
[INFO] tweaked toml for git repo https://github.com/Krystex/Chip-8 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Krystex/Chip-8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3dba96b70bb45e0322738af95a0914aa5a4e7c94957abf5286d206af637ab146
[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" "3dba96b70bb45e0322738af95a0914aa5a4e7c94957abf5286d206af637ab146", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3dba96b70bb45e0322738af95a0914aa5a4e7c94957abf5286d206af637ab146", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dba96b70bb45e0322738af95a0914aa5a4e7c94957abf5286d206af637ab146", kill_on_drop: false }`
[INFO] [stdout] 3dba96b70bb45e0322738af95a0914aa5a4e7c94957abf5286d206af637ab146
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b553bde02cab027ee4159d4ca3ff2a253e62f1a3f4cc5ed07bfdaa18a9f608c2
[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" "b553bde02cab027ee4159d4ca3ff2a253e62f1a3f4cc5ed07bfdaa18a9f608c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling chip-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:87:3
[INFO] [stdout]    |
[INFO] [stdout] 86 |         unimplemented!();
[INFO] [stdout]    |         ----------------- any code following this expression is unreachable
[INFO] [stdout] 87 |         return 0;
[INFO] [stdout]    |         ^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:379:11
[INFO] [stdout]     |
[INFO] [stdout] 379 |             Shr(x, y) => {
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/main.rs:390:10
[INFO] [stdout]     |
[INFO] [stdout] 390 |                 let (val, overflowing) = (*self.reg(x)).overflowing_sub(*self.reg(y));
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.54s
[INFO] running `Command { std: "docker" "inspect" "b553bde02cab027ee4159d4ca3ff2a253e62f1a3f4cc5ed07bfdaa18a9f608c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b553bde02cab027ee4159d4ca3ff2a253e62f1a3f4cc5ed07bfdaa18a9f608c2", kill_on_drop: false }`
[INFO] [stdout] b553bde02cab027ee4159d4ca3ff2a253e62f1a3f4cc5ed07bfdaa18a9f608c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78dfefb20601ec27c734cea3707b7099839ae0ae542bb6e31e56caad85202e94
[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" "78dfefb20601ec27c734cea3707b7099839ae0ae542bb6e31e56caad85202e94", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:87:3
[INFO] [stdout]    |
[INFO] [stdout] 86 |         unimplemented!();
[INFO] [stdout]    |         ----------------- any code following this expression is unreachable
[INFO] [stdout] 87 |         return 0;
[INFO] [stdout]    |         ^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:379:11
[INFO] [stdout]     |
[INFO] [stdout] 379 |             Shr(x, y) => {
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/main.rs:390:10
[INFO] [stdout]     |
[INFO] [stdout] 390 |                 let (val, overflowing) = (*self.reg(x)).overflowing_sub(*self.reg(y));
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "78dfefb20601ec27c734cea3707b7099839ae0ae542bb6e31e56caad85202e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78dfefb20601ec27c734cea3707b7099839ae0ae542bb6e31e56caad85202e94", kill_on_drop: false }`
[INFO] [stdout] 78dfefb20601ec27c734cea3707b7099839ae0ae542bb6e31e56caad85202e94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1a0118b72da0bfa5df9f336f954a9e4240f82ca987f6365cc50be0a8f5d8064f
[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" "1a0118b72da0bfa5df9f336f954a9e4240f82ca987f6365cc50be0a8f5d8064f", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:87:3
[INFO] [stderr]    |
[INFO] [stderr] 86 |         unimplemented!();
[INFO] [stderr]    |         ----------------- any code following this expression is unreachable
[INFO] [stderr] 87 |         return 0;
[INFO] [stderr]    |         ^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:379:11
[INFO] [stderr]     |
[INFO] [stderr] 379 |             Shr(x, y) => {
[INFO] [stderr]     |                    ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]    --> src/main.rs:390:10
[INFO] [stderr]     |
[INFO] [stderr] 390 |                 let (val, overflowing) = (*self.reg(x)).overflowing_sub(*self.reg(y));
[INFO] [stderr]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: `chip-8` (bin "chip-8" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chip_8-5bb74546459e0889)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test instruction::test_instructions ... ok
[INFO] [stdout] test test_bits ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1a0118b72da0bfa5df9f336f954a9e4240f82ca987f6365cc50be0a8f5d8064f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a0118b72da0bfa5df9f336f954a9e4240f82ca987f6365cc50be0a8f5d8064f", kill_on_drop: false }`
[INFO] [stdout] 1a0118b72da0bfa5df9f336f954a9e4240f82ca987f6365cc50be0a8f5d8064f