[INFO] fetching crate beat-detector 0.1.0...
[INFO] building beat-detector-0.1.0 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate beat-detector 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate beat-detector 0.1.0 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate beat-detector 0.1.0
[INFO] finished tweaking crates.io crate beat-detector 0.1.0
[INFO] tweaked toml for crates.io crate beat-detector 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate beat-detector 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ws2818-rgb-led-spi-driver v2.0.0
[INFO] [stderr]   Downloaded ctrlc v3.1.9
[INFO] [stderr]   Downloaded num-complex v0.4.0
[INFO] [stderr]   Downloaded spidev v0.4.1
[INFO] [stderr]   Downloaded microfft v0.4.0
[INFO] [stderr]   Downloaded spectrum-analyzer v0.5.2
[INFO] [stderr]   Downloaded lowpass-filter v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8fadc242b150d6b5d59a67eab061174c50df8d33fbf18f648376149e4544d26
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c8fadc242b150d6b5d59a67eab061174c50df8d33fbf18f648376149e4544d26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8fadc242b150d6b5d59a67eab061174c50df8d33fbf18f648376149e4544d26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8fadc242b150d6b5d59a67eab061174c50df8d33fbf18f648376149e4544d26", kill_on_drop: false }`
[INFO] [stdout] c8fadc242b150d6b5d59a67eab061174c50df8d33fbf18f648376149e4544d26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c2e9747b0c5f5c82a1b735a9330dbf48cd1f06dc9b586138c5a99f662306870
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3c2e9747b0c5f5c82a1b735a9330dbf48cd1f06dc9b586138c5a99f662306870", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling cpal v0.13.3
[INFO] [stderr]    Compiling lowpass-filter v0.2.4
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[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]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling microfft v0.4.0
[INFO] [stderr]    Compiling spectrum-analyzer v0.5.2
[INFO] [stderr]    Compiling alsa v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling beat-detector v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |             _ => panic!("Unknown Strategy"),
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:150:13
[INFO] [stdout]     |
[INFO] [stdout] 150 |             _ => panic!("Unknown Strategy"),
[INFO] [stdout]     |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |             _ => panic!("Unknown Strategy"),
[INFO] [stdout]     |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `preferred_window_length`
[INFO] [stdout]   --> src/record.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let preferred_window_length = 1024;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_preferred_window_length`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 25.45s
[INFO] running `Command { std: "docker" "inspect" "3c2e9747b0c5f5c82a1b735a9330dbf48cd1f06dc9b586138c5a99f662306870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c2e9747b0c5f5c82a1b735a9330dbf48cd1f06dc9b586138c5a99f662306870", kill_on_drop: false }`
[INFO] [stdout] 3c2e9747b0c5f5c82a1b735a9330dbf48cd1f06dc9b586138c5a99f662306870
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64c3edd93bb6c6da3d4fd67640b5027f8a1dda37b39bafce1f6c592d5d5173ce
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "64c3edd93bb6c6da3d4fd67640b5027f8a1dda37b39bafce1f6c592d5d5173ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling slice-deque v0.3.0
[INFO] [stderr]    Compiling ctrlc v3.1.9
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |             _ => panic!("Unknown Strategy"),
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:150:13
[INFO] [stdout]     |
[INFO] [stdout] 150 |             _ => panic!("Unknown Strategy"),
[INFO] [stdout]     |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |             _ => panic!("Unknown Strategy"),
[INFO] [stdout]     |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `preferred_window_length`
[INFO] [stdout]   --> src/record.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let preferred_window_length = 1024;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_preferred_window_length`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling jobserver v0.1.22
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling spidev v0.4.1
[INFO] [stderr]    Compiling ws2818-rgb-led-spi-driver v2.0.0
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]    Compiling minimp3 v0.5.1
[INFO] [stderr]    Compiling beat-detector v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/record.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 203 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |             _ => panic!("Unknown Strategy"),
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:150:13
[INFO] [stdout]     |
[INFO] [stdout] 150 |             _ => panic!("Unknown Strategy"),
[INFO] [stdout]     |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |             _ => panic!("Unknown Strategy"),
[INFO] [stdout]     |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `preferred_window_length`
[INFO] [stdout]   --> src/record.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let preferred_window_length = 1024;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_preferred_window_length`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [optimized + debuginfo] target(s) in 15.28s
[INFO] running `Command { std: "docker" "inspect" "64c3edd93bb6c6da3d4fd67640b5027f8a1dda37b39bafce1f6c592d5d5173ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64c3edd93bb6c6da3d4fd67640b5027f8a1dda37b39bafce1f6c592d5d5173ce", kill_on_drop: false }`
[INFO] [stdout] 64c3edd93bb6c6da3d4fd67640b5027f8a1dda37b39bafce1f6c592d5d5173ce
