[INFO] fetching crate beat-detector 0.1.2...
[INFO] checking beat-detector-0.1.2 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate beat-detector 0.1.2 into /workspace/builds/worker-117/source
[INFO] validating manifest of crates.io crate beat-detector 0.1.2 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 beat-detector 0.1.2
[INFO] finished tweaking crates.io crate beat-detector 0.1.2
[INFO] tweaked toml for crates.io crate beat-detector 0.1.2 written to /workspace/builds/worker-117/source/Cargo.toml
[INFO] crate crates.io crate beat-detector 0.1.2 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spidev v0.4.1
[INFO] [stderr]   Downloaded microfft v0.4.0
[INFO] [stderr]   Downloaded nix v0.22.1
[INFO] [stderr]   Downloaded ctrlc v3.2.0
[INFO] [stderr]   Downloaded ringbuffer v0.7.1
[INFO] [stderr]   Downloaded spectrum-analyzer v1.1.0
[INFO] [stderr]   Downloaded lowpass-filter v0.2.4
[INFO] [stderr]   Downloaded ws2818-rgb-led-spi-driver v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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] 9a1fee4e2d01e5a1359521748f1ce339cfd2f5d7797a46e40803352445554e81
[INFO] running `Command { std: "docker" "start" "-a" "9a1fee4e2d01e5a1359521748f1ce339cfd2f5d7797a46e40803352445554e81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a1fee4e2d01e5a1359521748f1ce339cfd2f5d7797a46e40803352445554e81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a1fee4e2d01e5a1359521748f1ce339cfd2f5d7797a46e40803352445554e81", kill_on_drop: false }`
[INFO] [stdout] 9a1fee4e2d01e5a1359521748f1ce339cfd2f5d7797a46e40803352445554e81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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] 8a5d0767fbe4fde84aeb6acaca9dd01195aae6f03be3c225ce5caad4da85476a
[INFO] running `Command { std: "docker" "start" "-a" "8a5d0767fbe4fde84aeb6acaca9dd01195aae6f03be3c225ce5caad4da85476a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling cpal v0.13.4
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking array-init v2.0.0
[INFO] [stderr]     Checking lowpass-filter v0.2.4
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]     Checking ringbuffer v0.7.1
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking microfft v0.4.0
[INFO] [stderr]     Checking nix v0.20.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking nix v0.22.1
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]     Checking spectrum-analyzer v1.1.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]     Checking spidev v0.4.1
[INFO] [stderr]     Checking ws2818-rgb-led-spi-driver v2.0.0
[INFO] [stderr]     Checking ctrlc v3.2.0
[INFO] [stderr]     Checking alsa v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking minimp3 v0.5.1
[INFO] [stderr]     Checking beat-detector v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/record.rs:202:9
[INFO] [stdout]     |
[INFO] [stdout] 202 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 20.00s
[INFO] running `Command { std: "docker" "inspect" "8a5d0767fbe4fde84aeb6acaca9dd01195aae6f03be3c225ce5caad4da85476a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a5d0767fbe4fde84aeb6acaca9dd01195aae6f03be3c225ce5caad4da85476a", kill_on_drop: false }`
[INFO] [stdout] 8a5d0767fbe4fde84aeb6acaca9dd01195aae6f03be3c225ce5caad4da85476a