[INFO] cloning repository https://github.com/rajeevriitm/mutithreaded_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rajeevriitm/mutithreaded_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frajeevriitm%2Fmutithreaded_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frajeevriitm%2Fmutithreaded_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5377a443b50fa1ddf79962c8efb3f81006f4722
[INFO] testing rajeevriitm/mutithreaded_server 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%2Frajeevriitm%2Fmutithreaded_server" "/workspace/builds/worker-41/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-41/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rajeevriitm/mutithreaded_server 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/rajeevriitm/mutithreaded_server
[INFO] finished tweaking git repo https://github.com/rajeevriitm/mutithreaded_server
[INFO] tweaked toml for git repo https://github.com/rajeevriitm/mutithreaded_server written to /workspace/builds/worker-41/source/Cargo.toml
[INFO] crate git repo https://github.com/rajeevriitm/mutithreaded_server 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] [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-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 4adc24486bcb86e9c2024ab9be56b41e424741ecee41af298c33aeb2bea8d782
[INFO] running `Command { std: "docker" "start" "-a" "4adc24486bcb86e9c2024ab9be56b41e424741ecee41af298c33aeb2bea8d782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4adc24486bcb86e9c2024ab9be56b41e424741ecee41af298c33aeb2bea8d782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4adc24486bcb86e9c2024ab9be56b41e424741ecee41af298c33aeb2bea8d782", kill_on_drop: false }`
[INFO] [stdout] 4adc24486bcb86e9c2024ab9be56b41e424741ecee41af298c33aeb2bea8d782
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 2be2529d393598a33dc59d7c428c3fec6a4082205a9a9c3704021c115bf17e03
[INFO] running `Command { std: "docker" "start" "-a" "2be2529d393598a33dc59d7c428c3fec6a4082205a9a9c3704021c115bf17e03", kill_on_drop: false }`
[INFO] [stderr]    Compiling trial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     id: usize,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.40s
[INFO] running `Command { std: "docker" "inspect" "2be2529d393598a33dc59d7c428c3fec6a4082205a9a9c3704021c115bf17e03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2be2529d393598a33dc59d7c428c3fec6a4082205a9a9c3704021c115bf17e03", kill_on_drop: false }`
[INFO] [stdout] 2be2529d393598a33dc59d7c428c3fec6a4082205a9a9c3704021c115bf17e03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] f42c75de0edf970941aa1ba360a60cc5b698de74d0332d12747358ad964dcb9f
[INFO] running `Command { std: "docker" "start" "-a" "f42c75de0edf970941aa1ba360a60cc5b698de74d0332d12747358ad964dcb9f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     id: usize,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling trial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     id: usize,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.63s
[INFO] running `Command { std: "docker" "inspect" "f42c75de0edf970941aa1ba360a60cc5b698de74d0332d12747358ad964dcb9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f42c75de0edf970941aa1ba360a60cc5b698de74d0332d12747358ad964dcb9f", kill_on_drop: false }`
[INFO] [stdout] f42c75de0edf970941aa1ba360a60cc5b698de74d0332d12747358ad964dcb9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 895d135a1d6ce64bed6dd881f33ccfcf58dfa05238fb869bbe9ff647dd0a0aec
[INFO] running `Command { std: "docker" "start" "-a" "895d135a1d6ce64bed6dd881f33ccfcf58dfa05238fb869bbe9ff647dd0a0aec", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: field is never read: `workers`
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     workers: Vec<Worker>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id`
[INFO] [stderr]  --> src/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     id: usize,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `thread`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     thread: thread::JoinHandle<()>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `trial` (lib) generated 3 warnings
[INFO] [stderr] warning: `trial` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/trial-70a71480eddd37aa)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/main-a7664ab2861e98b1)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests trial
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "895d135a1d6ce64bed6dd881f33ccfcf58dfa05238fb869bbe9ff647dd0a0aec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "895d135a1d6ce64bed6dd881f33ccfcf58dfa05238fb869bbe9ff647dd0a0aec", kill_on_drop: false }`
[INFO] [stdout] 895d135a1d6ce64bed6dd881f33ccfcf58dfa05238fb869bbe9ff647dd0a0aec