[INFO] cloning repository https://github.com/julianbieber/TcpServerSpeedtest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/julianbieber/TcpServerSpeedtest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulianbieber%2FTcpServerSpeedtest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulianbieber%2FTcpServerSpeedtest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac161080445d5b0ad49120960c420ef8651a5f19
[INFO] checking julianbieber/TcpServerSpeedtest against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulianbieber%2FTcpServerSpeedtest" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/julianbieber/TcpServerSpeedtest
[INFO] finished tweaking git repo https://github.com/julianbieber/TcpServerSpeedtest
[INFO] tweaked toml for git repo https://github.com/julianbieber/TcpServerSpeedtest written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/julianbieber/TcpServerSpeedtest on toolchain 66388cc165a6c4ac98c074dc9f0281ff23528c55
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/julianbieber/TcpServerSpeedtest 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e1766388ebe05dd61fbb0c935021869be38cd508b5efd8428a53db871b3738a
[INFO] running `Command { std: "docker" "start" "-a" "8e1766388ebe05dd61fbb0c935021869be38cd508b5efd8428a53db871b3738a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e1766388ebe05dd61fbb0c935021869be38cd508b5efd8428a53db871b3738a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e1766388ebe05dd61fbb0c935021869be38cd508b5efd8428a53db871b3738a", kill_on_drop: false }`
[INFO] [stdout] 8e1766388ebe05dd61fbb0c935021869be38cd508b5efd8428a53db871b3738a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89d18951d4c65a94d6184fd06a2e5d317b4ab1a6cad3eb0d47c942ece45e39cb
[INFO] running `Command { std: "docker" "start" "-a" "89d18951d4c65a94d6184fd06a2e5d317b4ab1a6cad3eb0d47c942ece45e39cb", kill_on_drop: false }`
[INFO] [stderr]     Checking tcp_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | /     loop {
[INFO] [stdout] 6 | |         stream.write(data)?;
[INFO] [stdout] 7 | |         stream.flush();
[INFO] [stdout] 8 | |     };
[INFO] [stdout]   | |_____- any code following this expression is unreachable
[INFO] [stdout] 9 |       Ok(0)
[INFO] [stdout]   |       ^^^^^ unreachable expression
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | /     loop {
[INFO] [stdout] 6 | |         stream.write(data)?;
[INFO] [stdout] 7 | |         stream.flush();
[INFO] [stdout] 8 | |     };
[INFO] [stdout]   | |_____- any code following this expression is unreachable
[INFO] [stdout] 9 |       Ok(0)
[INFO] [stdout]   |       ^^^^^ unreachable expression
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         stream.flush();
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let _ = stream.flush();
[INFO] [stdout]   |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         stream.flush();
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let _ = stream.flush();
[INFO] [stdout]   |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "89d18951d4c65a94d6184fd06a2e5d317b4ab1a6cad3eb0d47c942ece45e39cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89d18951d4c65a94d6184fd06a2e5d317b4ab1a6cad3eb0d47c942ece45e39cb", kill_on_drop: false }`
[INFO] [stdout] 89d18951d4c65a94d6184fd06a2e5d317b4ab1a6cad3eb0d47c942ece45e39cb
