[INFO] cloning repository https://github.com/jmadkins/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmadkins/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmadkins%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmadkins%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5789b39725a73af22ff69e1f4d3a518637dfa964
[INFO] checking jmadkins/learning-rust against master#01706e1a34c87656fcbfce198608f4cd2ac6461a for pr-135272
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmadkins%2Flearning-rust" "/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/jmadkins/learning-rust on toolchain 01706e1a34c87656fcbfce198608f4cd2ac6461a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jmadkins/learning-rust
[INFO] finished tweaking git repo https://github.com/jmadkins/learning-rust
[INFO] tweaked toml for git repo https://github.com/jmadkins/learning-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jmadkins/learning-rust 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" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 757d1c3aec7990de77940cb7eb4482c941e59a16c3f9ef4659e9846a087c5809
[INFO] running `Command { std: "docker" "start" "-a" "757d1c3aec7990de77940cb7eb4482c941e59a16c3f9ef4659e9846a087c5809", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "757d1c3aec7990de77940cb7eb4482c941e59a16c3f9ef4659e9846a087c5809", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "757d1c3aec7990de77940cb7eb4482c941e59a16c3f9ef4659e9846a087c5809", kill_on_drop: false }`
[INFO] [stdout] 757d1c3aec7990de77940cb7eb4482c941e59a16c3f9ef4659e9846a087c5809
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 221d34205e7dbfd946475d5a8d8ee0c52e51b47e76b35ae1ad9f9870cbad4846
[INFO] running `Command { std: "docker" "start" "-a" "221d34205e7dbfd946475d5a8d8ee0c52e51b47e76b35ae1ad9f9870cbad4846", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `closer`
[INFO] [stdout]   --> src/person.rs:37:30
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Status::Closed { closer, id } => println!("Closed"),
[INFO] [stdout]    |                              ^^^^^^ help: try ignoring the field: `closer: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/person.rs:37:38
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Status::Closed { closer, id } => println!("Closed"),
[INFO] [stdout]    |                                      ^^ help: try ignoring the field: `id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `closer`
[INFO] [stdout]   --> src/person.rs:37:30
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Status::Closed { closer, id } => println!("Closed"),
[INFO] [stdout]    |                              ^^^^^^ help: try ignoring the field: `closer: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/person.rs:37:38
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Status::Closed { closer, id } => println!("Closed"),
[INFO] [stdout]    |                                      ^^ help: try ignoring the field: `id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `something_cool` is never used
[INFO] [stdout]   --> src/main.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn something_cool(dave: &mut Person) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `something_cool` is never used
[INFO] [stdout]   --> src/main.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn something_cool(dave: &mut Person) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "221d34205e7dbfd946475d5a8d8ee0c52e51b47e76b35ae1ad9f9870cbad4846", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "221d34205e7dbfd946475d5a8d8ee0c52e51b47e76b35ae1ad9f9870cbad4846", kill_on_drop: false }`
[INFO] [stdout] 221d34205e7dbfd946475d5a8d8ee0c52e51b47e76b35ae1ad9f9870cbad4846