[INFO] cloning repository https://github.com/wangyanyu1817/ipcserialtest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wangyanyu1817/ipcserialtest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangyanyu1817%2Fipcserialtest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangyanyu1817%2Fipcserialtest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b88e3d8fdd7adf8815d78bd76b41684249718416
[INFO] checking wangyanyu1817/ipcserialtest against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangyanyu1817%2Fipcserialtest" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wangyanyu1817/ipcserialtest
[INFO] finished tweaking git repo https://github.com/wangyanyu1817/ipcserialtest
[INFO] tweaked toml for git repo https://github.com/wangyanyu1817/ipcserialtest written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wangyanyu1817/ipcserialtest on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wangyanyu1817/ipcserialtest 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a69915a31273fbc611b611de3176d4ed366e4c5503e813e007564d983e9a8bf
[INFO] running `Command { std: "docker" "start" "-a" "3a69915a31273fbc611b611de3176d4ed366e4c5503e813e007564d983e9a8bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a69915a31273fbc611b611de3176d4ed366e4c5503e813e007564d983e9a8bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a69915a31273fbc611b611de3176d4ed366e4c5503e813e007564d983e9a8bf", kill_on_drop: false }`
[INFO] [stdout] 3a69915a31273fbc611b611de3176d4ed366e4c5503e813e007564d983e9a8bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19a68829dc4a27acd482be1bef1d8433e76a470ef6b2fb53f32d14b8dd79a255
[INFO] running `Command { std: "docker" "start" "-a" "19a68829dc4a27acd482be1bef1d8433e76a470ef6b2fb53f32d14b8dd79a255", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking nix v0.24.1
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling async-trait v0.1.56
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking clap v3.1.18
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking serialport v4.2.0
[INFO] [stderr]     Checking mio-serial v5.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]     Checking tokio v1.19.2
[INFO] [stderr]     Checking futures-util v0.3.21
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking tokio-serial v5.4.3
[INFO] [stderr]     Checking tokio-modbus v0.5.2
[INFO] [stderr]     Checking serial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `handler` is never read
[INFO] [stdout]    --> src/main.rs:101:13
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let mut handler: Vec<thread::JoinHandle<()>> = Vec::new();
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id_cnt` is never read
[INFO] [stdout]   --> src/modbus_slave.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub(crate) struct MbServer {
[INFO] [stdout]    |                   -------- field in this struct
[INFO] [stdout] 23 |     rx: Arc<Mutex<Receiver<Option<(usize, Vec<NodeStat>)>>>>,
[INFO] [stdout] 24 |     id_cnt: usize,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `handler` is never read
[INFO] [stdout]    --> src/main.rs:101:13
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let mut handler: Vec<thread::JoinHandle<()>> = Vec::new();
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id_cnt` is never read
[INFO] [stdout]   --> src/modbus_slave.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub(crate) struct MbServer {
[INFO] [stdout]    |                   -------- field in this struct
[INFO] [stdout] 23 |     rx: Arc<Mutex<Receiver<Option<(usize, Vec<NodeStat>)>>>>,
[INFO] [stdout] 24 |     id_cnt: usize,
[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 15.51s
[INFO] running `Command { std: "docker" "inspect" "19a68829dc4a27acd482be1bef1d8433e76a470ef6b2fb53f32d14b8dd79a255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19a68829dc4a27acd482be1bef1d8433e76a470ef6b2fb53f32d14b8dd79a255", kill_on_drop: false }`
[INFO] [stdout] 19a68829dc4a27acd482be1bef1d8433e76a470ef6b2fb53f32d14b8dd79a255