[INFO] cloning repository https://github.com/Licenser/mio-udp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Licenser/mio-udp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Fmio-udp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Fmio-udp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 43cc148fe53aafd296b02d80a8fd02077c1b5ce4
[INFO] testing Licenser/mio-udp against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Fmio-udp" "/workspace/builds/worker-72/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-72/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Licenser/mio-udp on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Licenser/mio-udp
[INFO] finished tweaking git repo https://github.com/Licenser/mio-udp
[INFO] tweaked toml for git repo https://github.com/Licenser/mio-udp written to /workspace/builds/worker-72/source/Cargo.toml
[INFO] crate git repo https://github.com/Licenser/mio-udp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee2d1f5f844a0dd3d28eb526ebc283286d7202e48bb3ae7bc9fa68980079e9d4
[INFO] running `Command { std: "docker" "start" "-a" "ee2d1f5f844a0dd3d28eb526ebc283286d7202e48bb3ae7bc9fa68980079e9d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee2d1f5f844a0dd3d28eb526ebc283286d7202e48bb3ae7bc9fa68980079e9d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee2d1f5f844a0dd3d28eb526ebc283286d7202e48bb3ae7bc9fa68980079e9d4", kill_on_drop: false }`
[INFO] [stdout] ee2d1f5f844a0dd3d28eb526ebc283286d7202e48bb3ae7bc9fa68980079e9d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6668c9e75d4172709a3cd6f9e797a89d22bd29e246fd00539fe6188c27cb8207
[INFO] running `Command { std: "docker" "start" "-a" "6668c9e75d4172709a3cd6f9e797a89d22bd29e246fd00539fe6188c27cb8207", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling mio-udp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:33:25
[INFO] [stdout]    |
[INFO] [stdout] 33 |                     let n = socket.recv(&mut buf).unwrap();
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:24:11
[INFO] [stdout]    |
[INFO] [stdout] 24 |           socket.send_to(b"Argle bargle, foofaraw, hey diddy ho diddy no one knows", ("127.0.0.1", 9000));
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.20s
[INFO] running `Command { std: "docker" "inspect" "6668c9e75d4172709a3cd6f9e797a89d22bd29e246fd00539fe6188c27cb8207", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6668c9e75d4172709a3cd6f9e797a89d22bd29e246fd00539fe6188c27cb8207", kill_on_drop: false }`
[INFO] [stdout] 6668c9e75d4172709a3cd6f9e797a89d22bd29e246fd00539fe6188c27cb8207
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4016345b0fe966cf157eafad29281853d200767c282827342eb20b7ab4c8edee
[INFO] running `Command { std: "docker" "start" "-a" "4016345b0fe966cf157eafad29281853d200767c282827342eb20b7ab4c8edee", kill_on_drop: false }`
[INFO] [stderr]    Compiling mio-udp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:33:25
[INFO] [stdout]    |
[INFO] [stdout] 33 |                     let n = socket.recv(&mut buf).unwrap();
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:24:11
[INFO] [stdout]    |
[INFO] [stdout] 24 |           socket.send_to(b"Argle bargle, foofaraw, hey diddy ho diddy no one knows", ("127.0.0.1", 9000));
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "4016345b0fe966cf157eafad29281853d200767c282827342eb20b7ab4c8edee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4016345b0fe966cf157eafad29281853d200767c282827342eb20b7ab4c8edee", kill_on_drop: false }`
[INFO] [stdout] 4016345b0fe966cf157eafad29281853d200767c282827342eb20b7ab4c8edee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b06248433892a3b439dc25cca70e5c364fa6d07d91ebf0c1594568da730cef2a
[INFO] running `Command { std: "docker" "start" "-a" "b06248433892a3b439dc25cca70e5c364fa6d07d91ebf0c1594568da730cef2a", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/main.rs:33:25
[INFO] [stderr]    |
[INFO] [stderr] 33 |                     let n = socket.recv(&mut buf).unwrap();
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:24:11
[INFO] [stderr]    |
[INFO] [stderr] 24 |           socket.send_to(b"Argle bargle, foofaraw, hey diddy ho diddy no one knows", ("127.0.0.1", 9000));
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `mio-udp` (bin "mio-udp" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mio_udp-b5426b7c5bbbd600)
[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" "b06248433892a3b439dc25cca70e5c364fa6d07d91ebf0c1594568da730cef2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b06248433892a3b439dc25cca70e5c364fa6d07d91ebf0c1594568da730cef2a", kill_on_drop: false }`
[INFO] [stdout] b06248433892a3b439dc25cca70e5c364fa6d07d91ebf0c1594568da730cef2a