[INFO] cloning repository https://github.com/umaYnit/rust-serial-tool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/umaYnit/rust-serial-tool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FumaYnit%2Frust-serial-tool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FumaYnit%2Frust-serial-tool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 06f2371e14f0c9c0351a10358dd3c4eb8bc840e6
[INFO] checking umaYnit/rust-serial-tool against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FumaYnit%2Frust-serial-tool" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/umaYnit/rust-serial-tool
[INFO] finished tweaking git repo https://github.com/umaYnit/rust-serial-tool
[INFO] tweaked toml for git repo https://github.com/umaYnit/rust-serial-tool written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/umaYnit/rust-serial-tool on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/umaYnit/rust-serial-tool 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot_core v0.8.2
[INFO] [stderr]   Downloaded libudev v0.2.0
[INFO] [stderr]   Downloaded pbr v1.0.4
[INFO] [stderr]   Downloaded serialport v4.0.0
[INFO] [stderr]   Downloaded mio v0.7.7
[INFO] [stderr]   Downloaded nix v0.16.1
[INFO] [stderr]   Downloaded thread_local v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a306e8f1dccb2275eb980b2f6d24ba76dacf5ceaee326bb03da19712ac1e1ee
[INFO] running `Command { std: "docker" "start" "-a" "1a306e8f1dccb2275eb980b2f6d24ba76dacf5ceaee326bb03da19712ac1e1ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a306e8f1dccb2275eb980b2f6d24ba76dacf5ceaee326bb03da19712ac1e1ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a306e8f1dccb2275eb980b2f6d24ba76dacf5ceaee326bb03da19712ac1e1ee", kill_on_drop: false }`
[INFO] [stdout] 1a306e8f1dccb2275eb980b2f6d24ba76dacf5ceaee326bb03da19712ac1e1ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e16d83fdbc87e0900e359b9caba2a5fdb9cf5770dc04105d7549263f8222574
[INFO] running `Command { std: "docker" "start" "-a" "4e16d83fdbc87e0900e359b9caba2a5fdb9cf5770dc04105d7549263f8222574", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking pbr v1.0.4
[INFO] [stderr]     Checking crossterm v0.19.0
[INFO] [stderr]     Checking serialport v4.0.0
[INFO] [stderr]     Checking rust_serial_tool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `ok` is never read
[INFO] [stdout]    --> src/lib.rs:184:13
[INFO] [stdout]     |
[INFO] [stdout] 184 |             ok = res.0;
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ok` is never read
[INFO] [stdout]    --> src/lib.rs:184:13
[INFO] [stdout]     |
[INFO] [stdout] 184 |             ok = res.0;
[INFO] [stdout]     |             ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.18s
[INFO] running `Command { std: "docker" "inspect" "4e16d83fdbc87e0900e359b9caba2a5fdb9cf5770dc04105d7549263f8222574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e16d83fdbc87e0900e359b9caba2a5fdb9cf5770dc04105d7549263f8222574", kill_on_drop: false }`
[INFO] [stdout] 4e16d83fdbc87e0900e359b9caba2a5fdb9cf5770dc04105d7549263f8222574
