[INFO] cloning repository https://github.com/willkelleher/emu2rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/willkelleher/emu2rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillkelleher%2Femu2rs", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c79e89cc7bff90d9bc7df091e990122df869af80
[INFO] checking willkelleher/emu2rs against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillkelleher%2Femu2rs" "/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/willkelleher/emu2rs 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/willkelleher/emu2rs
[INFO] finished tweaking git repo https://github.com/willkelleher/emu2rs
[INFO] tweaked toml for git repo https://github.com/willkelleher/emu2rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/willkelleher/emu2rs 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 }`
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[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | /     loop {
[INFO] [stdout] 55 | |         match port.read(serial_buf.as_mut_slice()) {
[INFO] [stdout] 56 | |             Ok(t) => io::stdout().write_all(&serial_buf[..t]).unwrap(),
[INFO] [stdout] 57 | |             Err(ref e) if e.kind() == io::ErrorKind::TimedOut => (),
[INFO] [stdout] 58 | |             Err(e) => return Err(anyhow!("{:?}", e)),
[INFO] [stdout] 59 | |         }
[INFO] [stdout] 60 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 61 |
[INFO] [stdout] 62 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | /     loop {
[INFO] [stdout] 55 | |         match port.read(serial_buf.as_mut_slice()) {
[INFO] [stdout] 56 | |             Ok(t) => io::stdout().write_all(&serial_buf[..t]).unwrap(),
[INFO] [stdout] 57 | |             Err(ref e) if e.kind() == io::ErrorKind::TimedOut => (),
[INFO] [stdout] 58 | |             Err(e) => return Err(anyhow!("{:?}", e)),
[INFO] [stdout] 59 | |         }
[INFO] [stdout] 60 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 61 |
[INFO] [stdout] 62 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `host`
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let host = matches
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_host`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let token = matches
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `host`
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let host = matches
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_host`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let token = matches
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.14s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.1.2
[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" "7871069adac48e473c40886362491d1d34d710269eb0bc6fd70928bcd7a8be1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7871069adac48e473c40886362491d1d34d710269eb0bc6fd70928bcd7a8be1b", kill_on_drop: false }`
[INFO] [stdout] 7871069adac48e473c40886362491d1d34d710269eb0bc6fd70928bcd7a8be1b