[INFO] cloning repository https://github.com/ashton0223/my-rusty-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/ashton0223/my-rusty-chip-8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fashton0223%2Fmy-rusty-chip-8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fashton0223%2Fmy-rusty-chip-8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1499e6d8a0c55aa2d97c005ce81fab3e666a4ed6
[INFO] checking ashton0223/my-rusty-chip-8 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fashton0223%2Fmy-rusty-chip-8" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ashton0223/my-rusty-chip-8 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ashton0223/my-rusty-chip-8
[INFO] finished tweaking git repo https://github.com/ashton0223/my-rusty-chip-8
[INFO] tweaked toml for git repo https://github.com/ashton0223/my-rusty-chip-8 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ashton0223/my-rusty-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded soloud v0.2.3
[INFO] [stderr]   Downloaded soloud-derive v0.2.3
[INFO] [stderr]   Downloaded sdl2 v0.34.3
[INFO] [stderr]   Downloaded sdl2-sys v0.34.3
[INFO] [stderr]   Downloaded soloud-sys v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6419a9b373a4bab20c320d2a78efa89fd7a20265f8f5d3fa23585bc68e4e1d1
[INFO] running `Command { std: "docker" "start" "-a" "d6419a9b373a4bab20c320d2a78efa89fd7a20265f8f5d3fa23585bc68e4e1d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6419a9b373a4bab20c320d2a78efa89fd7a20265f8f5d3fa23585bc68e4e1d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6419a9b373a4bab20c320d2a78efa89fd7a20265f8f5d3fa23585bc68e4e1d1", kill_on_drop: false }`
[INFO] [stdout] d6419a9b373a4bab20c320d2a78efa89fd7a20265f8f5d3fa23585bc68e4e1d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64476d56fd686764da34f444d1471c40811818164a7f02a9379abe36ec49a780
[INFO] running `Command { std: "docker" "start" "-a" "64476d56fd686764da34f444d1471c40811818164a7f02a9379abe36ec49a780", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling getrandom v0.2.0
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling sdl2-sys v0.34.3
[INFO] [stderr]    Compiling sdl2 v0.34.3
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling nfd v0.0.4
[INFO] [stderr]    Compiling soloud-sys v0.2.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking rand_core v0.6.0
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.0
[INFO] [stderr]    Compiling soloud-derive v0.2.3
[INFO] [stderr]     Checking soloud v0.2.3
[INFO] [stderr]     Checking my-rusty-chip-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `sound_timer` is never read
[INFO] [stdout]   --> src/cpu.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Cpu {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub sound_timer: Arc<Mutex<u8>>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cpu` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sound_timer` is never read
[INFO] [stdout]   --> src/cpu.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Cpu {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub sound_timer: Arc<Mutex<u8>>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Cpu` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.67s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nfd v0.0.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "64476d56fd686764da34f444d1471c40811818164a7f02a9379abe36ec49a780", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64476d56fd686764da34f444d1471c40811818164a7f02a9379abe36ec49a780", kill_on_drop: false }`
[INFO] [stdout] 64476d56fd686764da34f444d1471c40811818164a7f02a9379abe36ec49a780