[INFO] cloning repository https://github.com/thomas9911/udp_tester
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thomas9911/udp_tester" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomas9911%2Fudp_tester", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomas9911%2Fudp_tester'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7081b2a1d06d7b51dd952fcb2693d908f9d9cac2
[INFO] testing thomas9911/udp_tester against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomas9911%2Fudp_tester" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thomas9911/udp_tester on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thomas9911/udp_tester
[INFO] finished tweaking git repo https://github.com/thomas9911/udp_tester
[INFO] tweaked toml for git repo https://github.com/thomas9911/udp_tester written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/thomas9911/udp_tester already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87589d752eb3f0725b15784a5a0616568a2b5b660214517706bcf06e9f597f47
[INFO] running `Command { std: "docker" "start" "-a" "87589d752eb3f0725b15784a5a0616568a2b5b660214517706bcf06e9f597f47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87589d752eb3f0725b15784a5a0616568a2b5b660214517706bcf06e9f597f47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87589d752eb3f0725b15784a5a0616568a2b5b660214517706bcf06e9f597f47", kill_on_drop: false }`
[INFO] [stdout] 87589d752eb3f0725b15784a5a0616568a2b5b660214517706bcf06e9f597f47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 968bbc125248e70cf8d02a9a94a5204b13314a386596f399c1c8c5c7766ba302
[INFO] running `Command { std: "docker" "start" "-a" "968bbc125248e70cf8d02a9a94a5204b13314a386596f399c1c8c5c7766ba302", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.59
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling futures-sink v0.3.12
[INFO] [stderr]    Compiling statsd-parser v0.3.0 (https://github.com/appsignal/statsd_parser?branch=main#4ab5574f)
[INFO] [stderr]    Compiling tokio v1.1.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.7
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.0
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling async-stream v0.3.0
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling tokio-stream v0.1.2
[INFO] [stderr]    Compiling tokio-util v0.6.2
[INFO] [stderr]    Compiling datadog_dev_server v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.38s
[INFO] running `Command { std: "docker" "inspect" "968bbc125248e70cf8d02a9a94a5204b13314a386596f399c1c8c5c7766ba302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "968bbc125248e70cf8d02a9a94a5204b13314a386596f399c1c8c5c7766ba302", kill_on_drop: false }`
[INFO] [stdout] 968bbc125248e70cf8d02a9a94a5204b13314a386596f399c1c8c5c7766ba302
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4851872f7a547a05e6ab2555cbfc3f0de8c3d1b5d9ebc51cf6892d1c6af04022
[INFO] running `Command { std: "docker" "start" "-a" "4851872f7a547a05e6ab2555cbfc3f0de8c3d1b5d9ebc51cf6892d1c6af04022", kill_on_drop: false }`
[INFO] [stderr]    Compiling datadog_dev_server v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> examples/ping.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | /     loop {
[INFO] [stdout] 8  | |         let mut buffer = String::new();
[INFO] [stdout] 9  | |         std::io::stdin().read_to_string(&mut buffer)?;
[INFO] [stdout] 10 | |
[INFO] [stdout] ...  |
[INFO] [stdout] 18 | |         println!("{:?}", std::str::from_utf8(&buf[0..amt]));
[INFO] [stdout] 19 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 20 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]   --> examples/ping.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let (amt, src) = socket.recv_from(&mut buf)?;
[INFO] [stdout]    |                   ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "4851872f7a547a05e6ab2555cbfc3f0de8c3d1b5d9ebc51cf6892d1c6af04022", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4851872f7a547a05e6ab2555cbfc3f0de8c3d1b5d9ebc51cf6892d1c6af04022", kill_on_drop: false }`
[INFO] [stdout] 4851872f7a547a05e6ab2555cbfc3f0de8c3d1b5d9ebc51cf6892d1c6af04022
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5321bae5979ee27a9fb8e4bab3b269c32a84920ca260a2e95c121b5d2c179b50
[INFO] running `Command { std: "docker" "start" "-a" "5321bae5979ee27a9fb8e4bab3b269c32a84920ca260a2e95c121b5d2c179b50", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> examples/ping.rs:20:5
[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] 7  | /     loop {
[INFO] [stdout] 
[INFO] [stderr] 8  | |         let mut buffer = String::new();
[INFO] [stderr] 9  | |         std::io::stdin().read_to_string(&mut buffer)?;
[INFO] [stderr] 10 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 18 | |         println!("{:?}", std::str::from_utf8(&buf[0..amt]));
[INFO] [stderr] 19 | |     }
[INFO] [stderr]    | |_____- any code following this expression is unreachable
[INFO] [stderr] 20 |       Ok(())
[INFO] [stderr]    |       ^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `src`
[INFO] [stderr]   --> examples/ping.rs:15:19
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let (amt, src) = socket.recv_from(&mut buf)?;
[INFO] [stderr]    |                   ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/datadog_dev_server-6e93f569a44bd926)
[INFO] running `Command { std: "docker" "inspect" "5321bae5979ee27a9fb8e4bab3b269c32a84920ca260a2e95c121b5d2c179b50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5321bae5979ee27a9fb8e4bab3b269c32a84920ca260a2e95c121b5d2c179b50", kill_on_drop: false }`
[INFO] [stdout] 5321bae5979ee27a9fb8e4bab3b269c32a84920ca260a2e95c121b5d2c179b50