[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] testing frzifus/modbus against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrzifus%2Fmodbus" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/frzifus/modbus on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-1/source/Cargo.toml
[INFO] crate git repo https://github.com/frzifus/modbus already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d633ac86adcf3707fe741dc84f8cd072490dd4706c59090e5c117912a536244c
[INFO] running `Command { std: "docker" "start" "-a" "d633ac86adcf3707fe741dc84f8cd072490dd4706c59090e5c117912a536244c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d633ac86adcf3707fe741dc84f8cd072490dd4706c59090e5c117912a536244c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d633ac86adcf3707fe741dc84f8cd072490dd4706c59090e5c117912a536244c", kill_on_drop: false }`
[INFO] [stdout] d633ac86adcf3707fe741dc84f8cd072490dd4706c59090e5c117912a536244c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a66b800a19219af8e34b20f7f302be92ea85f65754dc1e08aada2630180f97b9
[INFO] running `Command { std: "docker" "start" "-a" "a66b800a19219af8e34b20f7f302be92ea85f65754dc1e08aada2630180f97b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling modbus-tcp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: static is never used: `HEADER_LENGTH`
[INFO] [stdout]   --> src/server.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | static HEADER_LENGTH: u8 = 7;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `MIN_DATA_LENGTH`
[INFO] [stdout]   --> src/server.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | static MIN_DATA_LENGTH: u8 = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a66b800a19219af8e34b20f7f302be92ea85f65754dc1e08aada2630180f97b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a66b800a19219af8e34b20f7f302be92ea85f65754dc1e08aada2630180f97b9", kill_on_drop: false }`
[INFO] [stdout] a66b800a19219af8e34b20f7f302be92ea85f65754dc1e08aada2630180f97b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e20052c1ce6071b1d515fd00bb00e77e62963ecd217fe1867ae58f8a7fd15f8f
[INFO] running `Command { std: "docker" "start" "-a" "e20052c1ce6071b1d515fd00bb00e77e62963ecd217fe1867ae58f8a7fd15f8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling modbus-tcp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: static is never used: `HEADER_LENGTH`
[INFO] [stdout]   --> src/server.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | static HEADER_LENGTH: u8 = 7;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `MIN_DATA_LENGTH`
[INFO] [stdout]   --> src/server.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | static MIN_DATA_LENGTH: u8 = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "e20052c1ce6071b1d515fd00bb00e77e62963ecd217fe1867ae58f8a7fd15f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e20052c1ce6071b1d515fd00bb00e77e62963ecd217fe1867ae58f8a7fd15f8f", kill_on_drop: false }`
[INFO] [stdout] e20052c1ce6071b1d515fd00bb00e77e62963ecd217fe1867ae58f8a7fd15f8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 754f56c1a2c610d3b50bedc10034a6ff4d7dc5f974f7d707d22507d5ee2c721f
[INFO] running `Command { std: "docker" "start" "-a" "754f56c1a2c610d3b50bedc10034a6ff4d7dc5f974f7d707d22507d5ee2c721f", kill_on_drop: false }`
[INFO] [stderr] warning: static is never used: `HEADER_LENGTH`
[INFO] [stderr]   --> src/server.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | static HEADER_LENGTH: u8 = 7;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static is never used: `MIN_DATA_LENGTH`
[INFO] [stderr]   --> src/server.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | static MIN_DATA_LENGTH: u8 = 4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `modbus-tcp` (bin "modbus-tcp" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/modbus_tcp-4bcb02b9fb12618c)
[INFO] [stdout] running 2 tests
[INFO] [stdout] test server::tests::test_request ... ok
[INFO] [stdout] test server::tests::test_header ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "754f56c1a2c610d3b50bedc10034a6ff4d7dc5f974f7d707d22507d5ee2c721f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "754f56c1a2c610d3b50bedc10034a6ff4d7dc5f974f7d707d22507d5ee2c721f", kill_on_drop: false }`
[INFO] [stdout] 754f56c1a2c610d3b50bedc10034a6ff4d7dc5f974f7d707d22507d5ee2c721f