[INFO] cloning repository https://github.com/fhools/chip8-emu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fhools/chip8-emu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffhools%2Fchip8-emu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffhools%2Fchip8-emu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff898fbc3d7bd4e3d80ac1f01ef010dcd96dd89a
[INFO] checking fhools/chip8-emu against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffhools%2Fchip8-emu" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fhools/chip8-emu on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fhools/chip8-emu
[INFO] finished tweaking git repo https://github.com/fhools/chip8-emu
[INFO] tweaked toml for git repo https://github.com/fhools/chip8-emu written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/fhools/chip8-emu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2c8d344466ee1a9f68a8c115d9c56fbb008b82177458bda0377a7e06eaef338
[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" "b2c8d344466ee1a9f68a8c115d9c56fbb008b82177458bda0377a7e06eaef338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2c8d344466ee1a9f68a8c115d9c56fbb008b82177458bda0377a7e06eaef338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2c8d344466ee1a9f68a8c115d9c56fbb008b82177458bda0377a7e06eaef338", kill_on_drop: false }`
[INFO] [stdout] b2c8d344466ee1a9f68a8c115d9c56fbb008b82177458bda0377a7e06eaef338
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0eaaf5c7b869c2620c6906896f9c8305dc3b8796fbdb27371241b47d18079b23
[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" "0eaaf5c7b869c2620c6906896f9c8305dc3b8796fbdb27371241b47d18079b23", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking chip8-emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `cpu`
[INFO] [stdout]    --> src/cpu.rs:215:24
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn do_instr(&self, cpu: &mut CPU) {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_cpu`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cpu`
[INFO] [stdout]    --> src/cpu.rs:275:24
[INFO] [stdout]     |
[INFO] [stdout] 275 |     fn do_instr(&self, cpu: &mut CPU) {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_cpu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cpu`
[INFO] [stdout]    --> src/cpu.rs:662:24
[INFO] [stdout]     |
[INFO] [stdout] 662 |     fn do_instr(&self, cpu: &mut CPU)  {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_cpu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cpu`
[INFO] [stdout]    --> src/cpu.rs:215:24
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn do_instr(&self, cpu: &mut CPU) {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_cpu`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cpu`
[INFO] [stdout]    --> src/cpu.rs:275:24
[INFO] [stdout]     |
[INFO] [stdout] 275 |     fn do_instr(&self, cpu: &mut CPU) {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_cpu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cpu`
[INFO] [stdout]    --> src/cpu.rs:662:24
[INFO] [stdout]     |
[INFO] [stdout] 662 |     fn do_instr(&self, cpu: &mut CPU)  {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_cpu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Error`
[INFO] [stdout]   --> src/system.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub enum Error {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Error`
[INFO] [stdout]   --> src/system.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub enum Error {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.70s
[INFO] running `Command { std: "docker" "inspect" "0eaaf5c7b869c2620c6906896f9c8305dc3b8796fbdb27371241b47d18079b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eaaf5c7b869c2620c6906896f9c8305dc3b8796fbdb27371241b47d18079b23", kill_on_drop: false }`
[INFO] [stdout] 0eaaf5c7b869c2620c6906896f9c8305dc3b8796fbdb27371241b47d18079b23