[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] 22bbc9eda702a4459cb1f6adf60bb9ac3431b440 [INFO] checking thomas9911/udp_tester against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomas9911%2Fudp_tester" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/thomas9911/udp_tester on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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-9/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" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d930a386ced3801dad965c73561d71ae54f98b1123ba9d4c1b9703bb3ee8350a [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "d930a386ced3801dad965c73561d71ae54f98b1123ba9d4c1b9703bb3ee8350a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d930a386ced3801dad965c73561d71ae54f98b1123ba9d4c1b9703bb3ee8350a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d930a386ced3801dad965c73561d71ae54f98b1123ba9d4c1b9703bb3ee8350a", kill_on_drop: false }` [INFO] [stdout] d930a386ced3801dad965c73561d71ae54f98b1123ba9d4c1b9703bb3ee8350a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 20fba8a2fab60cf37e6b66123c05922ed383d5a410807ac1e3e65de04c3107fe [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "20fba8a2fab60cf37e6b66123c05922ed383d5a410807ac1e3e65de04c3107fe", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling syn v1.0.59 [INFO] [stderr] Compiling log v0.4.13 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Compiling unicode-segmentation v1.7.1 [INFO] [stderr] Checking statsd-parser v0.3.0 (https://github.com/appsignal/statsd_parser?branch=main#4ab5574f) [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling tokio v1.1.1 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Checking signal-hook-registry v1.3.0 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking mio v0.7.7 [INFO] [stderr] Compiling heck v0.3.2 [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] Checking async-stream v0.3.0 [INFO] [stderr] Checking structopt v0.3.21 [INFO] [stderr] Checking tokio-stream v0.1.2 [INFO] [stderr] Checking tokio-util v0.6.2 [INFO] [stderr] Checking 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 dev [unoptimized + debuginfo] target(s) in 47.74s [INFO] running `Command { std: "docker" "inspect" "20fba8a2fab60cf37e6b66123c05922ed383d5a410807ac1e3e65de04c3107fe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "20fba8a2fab60cf37e6b66123c05922ed383d5a410807ac1e3e65de04c3107fe", kill_on_drop: false }` [INFO] [stdout] 20fba8a2fab60cf37e6b66123c05922ed383d5a410807ac1e3e65de04c3107fe