[INFO] cloning repository https://github.com/neodevelop/hello_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/neodevelop/hello_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneodevelop%2Fhello_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneodevelop%2Fhello_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1c9ed2822ebc7d1895b7085d3d5fa6fbcef633f
[INFO] checking neodevelop/hello_rust against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneodevelop%2Fhello_rust" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/neodevelop/hello_rust on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/neodevelop/hello_rust
[INFO] finished tweaking git repo https://github.com/neodevelop/hello_rust
[INFO] tweaked toml for git repo https://github.com/neodevelop/hello_rust written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/neodevelop/hello_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94fc9aa544f088a35737c968db527fcf960137e18042e1f25439dbe33ab75ec1
[INFO] running `Command { std: "docker" "start" "-a" "94fc9aa544f088a35737c968db527fcf960137e18042e1f25439dbe33ab75ec1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94fc9aa544f088a35737c968db527fcf960137e18042e1f25439dbe33ab75ec1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94fc9aa544f088a35737c968db527fcf960137e18042e1f25439dbe33ab75ec1", kill_on_drop: false }`
[INFO] [stdout] 94fc9aa544f088a35737c968db527fcf960137e18042e1f25439dbe33ab75ec1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04fb7caf5cc69a0c915d1374ad657ad3125ef7fd0cc533d15589299a4882e2f7
[INFO] running `Command { std: "docker" "start" "-a" "04fb7caf5cc69a0c915d1374ad657ad3125ef7fd0cc533d15589299a4882e2f7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]  --> src/lib.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   workers: Vec<Worker>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]  --> src/lib.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   workers: Vec<Worker>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/lib.rs:42:3
[INFO] [stdout]    |
[INFO] [stdout] 42 |   id: usize,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/lib.rs:43:3
[INFO] [stdout]    |
[INFO] [stdout] 43 |   thread: thread::JoinHandle<()>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/lib.rs:42:3
[INFO] [stdout]    |
[INFO] [stdout] 42 |   id: usize,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/lib.rs:43:3
[INFO] [stdout]    |
[INFO] [stdout] 43 |   thread: thread::JoinHandle<()>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.07s
[INFO] running `Command { std: "docker" "inspect" "04fb7caf5cc69a0c915d1374ad657ad3125ef7fd0cc533d15589299a4882e2f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04fb7caf5cc69a0c915d1374ad657ad3125ef7fd0cc533d15589299a4882e2f7", kill_on_drop: false }`
[INFO] [stdout] 04fb7caf5cc69a0c915d1374ad657ad3125ef7fd0cc533d15589299a4882e2f7