[INFO] cloning repository https://github.com/yogeshkumar98103/TCP-in-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yogeshkumar98103/TCP-in-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyogeshkumar98103%2FTCP-in-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyogeshkumar98103%2FTCP-in-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] faae1886c72d1f0e71b9e6dd73c76cfa7cb8af24
[INFO] testing yogeshkumar98103/TCP-in-Rust against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyogeshkumar98103%2FTCP-in-Rust" "/workspace/builds/worker-107/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-107/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yogeshkumar98103/TCP-in-Rust on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yogeshkumar98103/TCP-in-Rust
[INFO] finished tweaking git repo https://github.com/yogeshkumar98103/TCP-in-Rust
[INFO] tweaked toml for git repo https://github.com/yogeshkumar98103/TCP-in-Rust written to /workspace/builds/worker-107/source/Cargo.toml
[INFO] crate git repo https://github.com/yogeshkumar98103/TCP-in-Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f055a29ad020c7503f5512413044f6626b6b646a49d56f5d24c85601779bbe61
[INFO] running `Command { std: "docker" "start" "-a" "f055a29ad020c7503f5512413044f6626b6b646a49d56f5d24c85601779bbe61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f055a29ad020c7503f5512413044f6626b6b646a49d56f5d24c85601779bbe61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f055a29ad020c7503f5512413044f6626b6b646a49d56f5d24c85601779bbe61", kill_on_drop: false }`
[INFO] [stdout] f055a29ad020c7503f5512413044f6626b6b646a49d56f5d24c85601779bbe61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca4533f54bfa35d2e708ca713b693a1b2be7ba6cb83b6f229d4f6b2aa750a07b
[INFO] running `Command { std: "docker" "start" "-a" "ca4533f54bfa35d2e708ca713b693a1b2be7ba6cb83b6f229d4f6b2aa750a07b", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling TCP v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:357:13
[INFO] [stdout]     |
[INFO] [stdout] 357 |         let mut connection = self.connection.connection.lock().unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.94s
[INFO] running `Command { std: "docker" "inspect" "ca4533f54bfa35d2e708ca713b693a1b2be7ba6cb83b6f229d4f6b2aa750a07b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca4533f54bfa35d2e708ca713b693a1b2be7ba6cb83b6f229d4f6b2aa750a07b", kill_on_drop: false }`
[INFO] [stdout] ca4533f54bfa35d2e708ca713b693a1b2be7ba6cb83b6f229d4f6b2aa750a07b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7cd9925b796a4f664c0e4f40b42dbd85905f6672dbffac9b9c7c955858203f19
[INFO] running `Command { std: "docker" "start" "-a" "7cd9925b796a4f664c0e4f40b42dbd85905f6672dbffac9b9c7c955858203f19", kill_on_drop: false }`
[INFO] [stderr]    Compiling TCP v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:357:13
[INFO] [stdout]     |
[INFO] [stdout] 357 |         let mut connection = self.connection.connection.lock().unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "7cd9925b796a4f664c0e4f40b42dbd85905f6672dbffac9b9c7c955858203f19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cd9925b796a4f664c0e4f40b42dbd85905f6672dbffac9b9c7c955858203f19", kill_on_drop: false }`
[INFO] [stdout] 7cd9925b796a4f664c0e4f40b42dbd85905f6672dbffac9b9c7c955858203f19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c689b00cda48c7296c0dc24ce491a7c2908c0ae263292f5bc53dcd24bec1f03b
[INFO] running `Command { std: "docker" "start" "-a" "c689b00cda48c7296c0dc24ce491a7c2908c0ae263292f5bc53dcd24bec1f03b", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:357:13
[INFO] [stderr]     |
[INFO] [stderr] 357 |         let mut connection = self.connection.connection.lock().unwrap();
[INFO] [stderr]     |             ----^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] running 0 tests
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] warning: `TCP` (bin "TCP" test) generated 1 warning
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.88s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/TCP-c38ec20abbb39499)
[INFO] running `Command { std: "docker" "inspect" "c689b00cda48c7296c0dc24ce491a7c2908c0ae263292f5bc53dcd24bec1f03b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c689b00cda48c7296c0dc24ce491a7c2908c0ae263292f5bc53dcd24bec1f03b", kill_on_drop: false }`
[INFO] [stdout] c689b00cda48c7296c0dc24ce491a7c2908c0ae263292f5bc53dcd24bec1f03b