[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] checking Licenser/mio-udp against master#7c4ac0603e9ee5295bc802c90575391288a69a8a for pr-124728 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Fmio-udp" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Licenser/mio-udp on toolchain 7c4ac0603e9ee5295bc802c90575391288a69a8a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7c4ac0603e9ee5295bc802c90575391288a69a8a" "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-5-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7c4ac0603e9ee5295bc802c90575391288a69a8a" "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 [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking Licenser/mio-udp against try#98ebbae35138252af77610c20ea5a5e8bf68d639 for pr-124728 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Fmio-udp" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Licenser/mio-udp on toolchain 98ebbae35138252af77610c20ea5a5e8bf68d639 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "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-5-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded bitflags v1.1.0 [INFO] [stderr] Downloaded mio v0.6.19 [INFO] [stderr] Downloaded iovec v0.1.2 [INFO] [stderr] Downloaded libc v0.2.62 [INFO] [stderr] Downloaded cfg-if v0.1.9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3e4d44fd3910f75d1a9db6ae31e37a23a1c2f8e439c2e111634f1db8b6739870 [INFO] running `Command { std: "docker" "start" "-a" "3e4d44fd3910f75d1a9db6ae31e37a23a1c2f8e439c2e111634f1db8b6739870", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3e4d44fd3910f75d1a9db6ae31e37a23a1c2f8e439c2e111634f1db8b6739870", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3e4d44fd3910f75d1a9db6ae31e37a23a1c2f8e439c2e111634f1db8b6739870", kill_on_drop: false }` [INFO] [stdout] 3e4d44fd3910f75d1a9db6ae31e37a23a1c2f8e439c2e111634f1db8b6739870 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+98ebbae35138252af77610c20ea5a5e8bf68d639" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5666c2d9d7d263ef9558702a04d343b86504ed660fb2fd08e166f07bd83d7dfa [INFO] running `Command { std: "docker" "start" "-a" "5666c2d9d7d263ef9558702a04d343b86504ed660fb2fd08e166f07bd83d7dfa", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.62 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking 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 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: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 24 | let _ = 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] [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: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 24 | let _ = 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] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.55s [INFO] running `Command { std: "docker" "inspect" "5666c2d9d7d263ef9558702a04d343b86504ed660fb2fd08e166f07bd83d7dfa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5666c2d9d7d263ef9558702a04d343b86504ed660fb2fd08e166f07bd83d7dfa", kill_on_drop: false }` [INFO] [stdout] 5666c2d9d7d263ef9558702a04d343b86504ed660fb2fd08e166f07bd83d7dfa