[INFO] cloning repository https://github.com/frzifus/modbus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/frzifus/modbus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrzifus%2Fmodbus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrzifus%2Fmodbus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c910451065de9f262cabc1a26edc1d0f6362b0b8
[INFO] checking frzifus/modbus against master#b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd for pr-155499
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrzifus%2Fmodbus" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/frzifus/modbus
[INFO] finished tweaking git repo https://github.com/frzifus/modbus
[INFO] tweaked toml for git repo https://github.com/frzifus/modbus written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/frzifus/modbus on toolchain b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/frzifus/modbus 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" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded byteorder v1.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 656ea4f84e6c840a01113f83ed682065eb9e989cc3726905e3a0cf19bd86cb93
[INFO] running `Command { std: "docker" "start" "-a" "656ea4f84e6c840a01113f83ed682065eb9e989cc3726905e3a0cf19bd86cb93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "656ea4f84e6c840a01113f83ed682065eb9e989cc3726905e3a0cf19bd86cb93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "656ea4f84e6c840a01113f83ed682065eb9e989cc3726905e3a0cf19bd86cb93", kill_on_drop: false }`
[INFO] [stdout] 656ea4f84e6c840a01113f83ed682065eb9e989cc3726905e3a0cf19bd86cb93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14288c38134cd04493766d89b4f2a2de7b3dfe05c44d1529b37c42316c2c18b2
[INFO] running `Command { std: "docker" "start" "-a" "14288c38134cd04493766d89b4f2a2de7b3dfe05c44d1529b37c42316c2c18b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking modbus-tcp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: static `HEADER_LENGTH` is never used
[INFO] [stdout]   --> src/server.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | static HEADER_LENGTH: u8 = 7;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MIN_DATA_LENGTH` is never used
[INFO] [stdout]   --> src/server.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | static MIN_DATA_LENGTH: u8 = 4;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `HEADER_LENGTH` is never used
[INFO] [stdout]   --> src/server.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | static HEADER_LENGTH: u8 = 7;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MIN_DATA_LENGTH` is never used
[INFO] [stdout]   --> src/server.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | static MIN_DATA_LENGTH: u8 = 4;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "14288c38134cd04493766d89b4f2a2de7b3dfe05c44d1529b37c42316c2c18b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14288c38134cd04493766d89b4f2a2de7b3dfe05c44d1529b37c42316c2c18b2", kill_on_drop: false }`
[INFO] [stdout] 14288c38134cd04493766d89b4f2a2de7b3dfe05c44d1529b37c42316c2c18b2
