[INFO] cloning repository https://github.com/tilersmyth/rust-serialport-watcher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tilersmyth/rust-serialport-watcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftilersmyth%2Frust-serialport-watcher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftilersmyth%2Frust-serialport-watcher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2e1a541c55d74b03f131f077b0e780b3e1de6b6
[INFO] checking tilersmyth/rust-serialport-watcher against master#9d28fe39763974a96d61232e96ac856735e4cdd6 for pr-139624
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftilersmyth%2Frust-serialport-watcher" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tilersmyth/rust-serialport-watcher on toolchain 9d28fe39763974a96d61232e96ac856735e4cdd6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tilersmyth/rust-serialport-watcher
[INFO] finished tweaking git repo https://github.com/tilersmyth/rust-serialport-watcher
[INFO] tweaked toml for git repo https://github.com/tilersmyth/rust-serialport-watcher written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tilersmyth/rust-serialport-watcher 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" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb83c9c8278b3010a869396819cfd19f5e8bc61d06a14af962541f72b5a292a7
[INFO] running `Command { std: "docker" "start" "-a" "fb83c9c8278b3010a869396819cfd19f5e8bc61d06a14af962541f72b5a292a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb83c9c8278b3010a869396819cfd19f5e8bc61d06a14af962541f72b5a292a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb83c9c8278b3010a869396819cfd19f5e8bc61d06a14af962541f72b5a292a7", kill_on_drop: false }`
[INFO] [stdout] fb83c9c8278b3010a869396819cfd19f5e8bc61d06a14af962541f72b5a292a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+9d28fe39763974a96d61232e96ac856735e4cdd6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 995a89a18d04603220bf0d035c0b2fe1a71ac81e6e8da51a277bfabd2b2d1381
[INFO] running `Command { std: "docker" "start" "-a" "995a89a18d04603220bf0d035c0b2fe1a71ac81e6e8da51a277bfabd2b2d1381", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking unescaper v0.1.4
[INFO] [stderr]     Checking serialport v4.3.0
[INFO] [stderr]     Checking rust-serial-detector v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/reader.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct ScaleReader {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 10 |     port: Arc<Mutex<String>>,
[INFO] [stdout] 11 |     value: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/reader.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct ScaleReader {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 10 |     port: Arc<Mutex<String>>,
[INFO] [stdout] 11 |     value: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.01s
[INFO] running `Command { std: "docker" "inspect" "995a89a18d04603220bf0d035c0b2fe1a71ac81e6e8da51a277bfabd2b2d1381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "995a89a18d04603220bf0d035c0b2fe1a71ac81e6e8da51a277bfabd2b2d1381", kill_on_drop: false }`
[INFO] [stdout] 995a89a18d04603220bf0d035c0b2fe1a71ac81e6e8da51a277bfabd2b2d1381