[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 try#1bdcb63291ccffc030f8223f6f978568dd240e3e for 155501-infallible-never-with-reservation
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrzifus%2Fmodbus" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/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-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/frzifus/modbus on toolchain 1bdcb63291ccffc030f8223f6f978568dd240e3e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1bdcb63291ccffc030f8223f6f978568dd240e3e" "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" "+1bdcb63291ccffc030f8223f6f978568dd240e3e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1bdcb63291ccffc030f8223f6f978568dd240e3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e86f6b5d60acedc048f88a383a33e8784781b61e29b598021f30260f80c0420f
[INFO] running `Command { std: "docker" "start" "-a" "e86f6b5d60acedc048f88a383a33e8784781b61e29b598021f30260f80c0420f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e86f6b5d60acedc048f88a383a33e8784781b61e29b598021f30260f80c0420f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e86f6b5d60acedc048f88a383a33e8784781b61e29b598021f30260f80c0420f", kill_on_drop: false }`
[INFO] [stdout] e86f6b5d60acedc048f88a383a33e8784781b61e29b598021f30260f80c0420f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1bdcb63291ccffc030f8223f6f978568dd240e3e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f3d7afbcf4bbbb20ee559f9c561c0c25ddfef5dcd1a9e0d84cad6938e434b52
[INFO] running `Command { std: "docker" "start" "-a" "8f3d7afbcf4bbbb20ee559f9c561c0c25ddfef5dcd1a9e0d84cad6938e434b52", 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 0.94s
[INFO] running `Command { std: "docker" "inspect" "8f3d7afbcf4bbbb20ee559f9c561c0c25ddfef5dcd1a9e0d84cad6938e434b52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f3d7afbcf4bbbb20ee559f9c561c0c25ddfef5dcd1a9e0d84cad6938e434b52", kill_on_drop: false }`
[INFO] [stdout] 8f3d7afbcf4bbbb20ee559f9c561c0c25ddfef5dcd1a9e0d84cad6938e434b52
