[INFO] fetching crate lexopt 0.2.0...
[INFO] checking lexopt-0.2.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate lexopt 0.2.0 into /workspace/builds/worker-67/source
[INFO] validating manifest of crates.io crate lexopt 0.2.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lexopt 0.2.0
[INFO] finished tweaking crates.io crate lexopt 0.2.0
[INFO] tweaked toml for crates.io crate lexopt 0.2.0 written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] crate crates.io crate lexopt 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bebaaa077c5508c7af567a2b7e090572d7d857181dcc2016c8ad60c9c9e994dd
[INFO] running `Command { std: "docker" "start" "-a" "bebaaa077c5508c7af567a2b7e090572d7d857181dcc2016c8ad60c9c9e994dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bebaaa077c5508c7af567a2b7e090572d7d857181dcc2016c8ad60c9c9e994dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bebaaa077c5508c7af567a2b7e090572d7d857181dcc2016c8ad60c9c9e994dd", kill_on_drop: false }`
[INFO] [stdout] bebaaa077c5508c7af567a2b7e090572d7d857181dcc2016c8ad60c9c9e994dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd1bb0fc31b0f785bc2b2f90010f8ab281aebc1df72396c27e41b3f6ea93e653
[INFO] running `Command { std: "docker" "start" "-a" "bd1bb0fc31b0f785bc2b2f90010f8ab281aebc1df72396c27e41b3f6ea93e653", kill_on_drop: false }`
[INFO] [stderr]     Checking lexopt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `number`
[INFO] [stdout]   --> examples/pico_test_app.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     number: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opt_number`
[INFO] [stdout]   --> examples/pico_test_app.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     opt_number: Option<u32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]   --> examples/pico_test_app.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     width: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `input`
[INFO] [stdout]   --> examples/pico_test_app.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     input: std::path::PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "bd1bb0fc31b0f785bc2b2f90010f8ab281aebc1df72396c27e41b3f6ea93e653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd1bb0fc31b0f785bc2b2f90010f8ab281aebc1df72396c27e41b3f6ea93e653", kill_on_drop: false }`
[INFO] [stdout] bd1bb0fc31b0f785bc2b2f90010f8ab281aebc1df72396c27e41b3f6ea93e653