[INFO] fetching crate ogawa-rs 0.2.0...
[INFO] checking ogawa-rs-0.2.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate ogawa-rs 0.2.0 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate ogawa-rs 0.2.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ogawa-rs 0.2.0
[INFO] finished tweaking crates.io crate ogawa-rs 0.2.0
[INFO] tweaked toml for crates.io crate ogawa-rs 0.2.0 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb50a13ee92f197330e20b73980acaefa2ade0c13262f5ac0a8f57a9268fe944
[INFO] running `Command { std: "docker" "start" "-a" "bb50a13ee92f197330e20b73980acaefa2ade0c13262f5ac0a8f57a9268fe944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb50a13ee92f197330e20b73980acaefa2ade0c13262f5ac0a8f57a9268fe944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb50a13ee92f197330e20b73980acaefa2ade0c13262f5ac0a8f57a9268fe944", kill_on_drop: false }`
[INFO] [stdout] bb50a13ee92f197330e20b73980acaefa2ade0c13262f5ac0a8f57a9268fe944
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4429f44b7b9dfd50aa24393e14c7030a86b7c8703c75ed7194966640f5ba7bf
[INFO] running `Command { std: "docker" "start" "-a" "c4429f44b7b9dfd50aa24393e14c7030a86b7c8703c75ed7194966640f5ba7bf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling anyhow v1.0.50
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking system_error v0.1.1
[INFO] [stderr]     Checking vmap v0.4.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking ogawa-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `num_samples_per_cycle`
[INFO] [stdout]   --> src/time_sampling.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     num_samples_per_cycle: 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: `time_per_cycle`
[INFO] [stdout]   --> src/time_sampling.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     time_per_cycle: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sampling_type`
[INFO] [stdout]   --> src/time_sampling.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     sampling_type: TimeSamplingType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `samples`
[INFO] [stdout]   --> src/time_sampling.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     samples: Vec<f64>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_samples_per_cycle`
[INFO] [stdout]   --> src/time_sampling.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     num_samples_per_cycle: 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: `time_per_cycle`
[INFO] [stdout]   --> src/time_sampling.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     time_per_cycle: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sampling_type`
[INFO] [stdout]   --> src/time_sampling.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     sampling_type: TimeSamplingType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `samples`
[INFO] [stdout]   --> src/time_sampling.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     samples: Vec<f64>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.69s
[INFO] running `Command { std: "docker" "inspect" "c4429f44b7b9dfd50aa24393e14c7030a86b7c8703c75ed7194966640f5ba7bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4429f44b7b9dfd50aa24393e14c7030a86b7c8703c75ed7194966640f5ba7bf", kill_on_drop: false }`
[INFO] [stdout] c4429f44b7b9dfd50aa24393e14c7030a86b7c8703c75ed7194966640f5ba7bf