[INFO] cloning repository https://github.com/MarinPostma/simple_tcp_server [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MarinPostma/simple_tcp_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarinPostma%2Fsimple_tcp_server", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarinPostma%2Fsimple_tcp_server'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8b4a249ecddf1edbb5db0144c6d8036ea77516ec [INFO] testing MarinPostma/simple_tcp_server against beta-2021-09-08 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarinPostma%2Fsimple_tcp_server" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/MarinPostma/simple_tcp_server on toolchain beta-2021-09-08 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/MarinPostma/simple_tcp_server [INFO] finished tweaking git repo https://github.com/MarinPostma/simple_tcp_server [INFO] tweaked toml for git repo https://github.com/MarinPostma/simple_tcp_server written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/MarinPostma/simple_tcp_server already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5c9093a42f92071132e7869409e8ad90a0bad5ea1f64dba8e6886b10bf6015e0 [INFO] running `Command { std: "docker" "start" "-a" "5c9093a42f92071132e7869409e8ad90a0bad5ea1f64dba8e6886b10bf6015e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5c9093a42f92071132e7869409e8ad90a0bad5ea1f64dba8e6886b10bf6015e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5c9093a42f92071132e7869409e8ad90a0bad5ea1f64dba8e6886b10bf6015e0", kill_on_drop: false }` [INFO] [stdout] 5c9093a42f92071132e7869409e8ad90a0bad5ea1f64dba8e6886b10bf6015e0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2f76189b50c1be3628796152897d43797c7066e3a0de16efecbcbd5904fc9f03 [INFO] running `Command { std: "docker" "start" "-a" "2f76189b50c1be3628796152897d43797c7066e3a0de16efecbcbd5904fc9f03", kill_on_drop: false }` [INFO] [stderr] Compiling simple_tcp_chat v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> src/main.rs:70:17 [INFO] [stdout] | [INFO] [stdout] 70 | Err(err) => { } [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` 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 1.23s [INFO] running `Command { std: "docker" "inspect" "2f76189b50c1be3628796152897d43797c7066e3a0de16efecbcbd5904fc9f03", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2f76189b50c1be3628796152897d43797c7066e3a0de16efecbcbd5904fc9f03", kill_on_drop: false }` [INFO] [stdout] 2f76189b50c1be3628796152897d43797c7066e3a0de16efecbcbd5904fc9f03 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c5799b1d3561e7fffeb855f42b73d629cd282193c66788e6512a64b2734aeab5 [INFO] running `Command { std: "docker" "start" "-a" "c5799b1d3561e7fffeb855f42b73d629cd282193c66788e6512a64b2734aeab5", kill_on_drop: false }` [INFO] [stderr] Compiling simple_tcp_chat v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> src/main.rs:70:17 [INFO] [stdout] | [INFO] [stdout] 70 | Err(err) => { } [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` 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 0.71s [INFO] running `Command { std: "docker" "inspect" "c5799b1d3561e7fffeb855f42b73d629cd282193c66788e6512a64b2734aeab5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c5799b1d3561e7fffeb855f42b73d629cd282193c66788e6512a64b2734aeab5", kill_on_drop: false }` [INFO] [stdout] c5799b1d3561e7fffeb855f42b73d629cd282193c66788e6512a64b2734aeab5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 60b2409d3bb266057ac62f907c02ffda944941b0ceea684cad9da121f09e714b [INFO] running `Command { std: "docker" "start" "-a" "60b2409d3bb266057ac62f907c02ffda944941b0ceea684cad9da121f09e714b", kill_on_drop: false }` [INFO] [stdout] [INFO] [stderr] warning: unused variable: `err` [INFO] [stdout] running 0 tests [INFO] [stderr] --> src/main.rs:70:17 [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] 70 | Err(err) => { } [INFO] [stdout] [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `simple_tcp_chat` (bin "simple_tcp_chat" test) generated 1 warning [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/simple_tcp_chat-00e0678b62abae75) [INFO] running `Command { std: "docker" "inspect" "60b2409d3bb266057ac62f907c02ffda944941b0ceea684cad9da121f09e714b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60b2409d3bb266057ac62f907c02ffda944941b0ceea684cad9da121f09e714b", kill_on_drop: false }` [INFO] [stdout] 60b2409d3bb266057ac62f907c02ffda944941b0ceea684cad9da121f09e714b