[INFO] cloning repository https://github.com/kirinokirino/sampler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kirinokirino/sampler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirinokirino%2Fsampler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirinokirino%2Fsampler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76dfc654a89790f712a951a166cb854d81976255
[INFO] checking kirinokirino/sampler against try#39605810efb1a0d52f955bfba9e4eec7a01d5deb for pr-153692
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkirinokirino%2Fsampler" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kirinokirino/sampler
[INFO] finished tweaking git repo https://github.com/kirinokirino/sampler
[INFO] tweaked toml for git repo https://github.com/kirinokirino/sampler written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kirinokirino/sampler on toolchain 39605810efb1a0d52f955bfba9e4eec7a01d5deb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kirinokirino/sampler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "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 coremidi-sys v3.1.0
[INFO] [stderr]   Downloaded midir v0.9.0
[INFO] [stderr]   Downloaded coremidi v0.6.0
[INFO] [stderr]   Downloaded windows v0.43.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8854bc3ba028d79141f61f5126dde2215f7562917e18f5daea02e5f9df3468de
[INFO] running `Command { std: "docker" "start" "-a" "8854bc3ba028d79141f61f5126dde2215f7562917e18f5daea02e5f9df3468de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8854bc3ba028d79141f61f5126dde2215f7562917e18f5daea02e5f9df3468de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8854bc3ba028d79141f61f5126dde2215f7562917e18f5daea02e5f9df3468de", kill_on_drop: false }`
[INFO] [stdout] 8854bc3ba028d79141f61f5126dde2215f7562917e18f5daea02e5f9df3468de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c281657722b631bc31b7bf1299431ac00f0e03ec86929ce56e1b2668df74bc48
[INFO] running `Command { std: "docker" "start" "-a" "c281657722b631bc31b7bf1299431ac00f0e03ec86929ce56e1b2668df74bc48", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]    Compiling quad-snd v0.2.7 (https://github.com/kirinokirino/quad-snd#6dbbb7c9)
[INFO] [stderr]     Checking hound v3.5.0
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking ogg v0.7.1
[INFO] [stderr]     Checking dasp_frame v0.11.0
[INFO] [stderr]     Checking lewton v0.9.4
[INFO] [stderr]     Checking alsa v0.7.0
[INFO] [stderr]     Checking audrey v0.3.0
[INFO] [stderr]     Checking midir v0.9.0
[INFO] [stderr]     Checking sampler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `loops` is never read
[INFO] [stdout]   --> src/sampler.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Sampler {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     loops: Vec<Sample>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         sender.send(note);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         let _ = sender.send(note);
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loops` is never read
[INFO] [stdout]   --> src/sampler.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Sampler {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     loops: Vec<Sample>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         sender.send(note);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |                         let _ = sender.send(note);
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.06s
[INFO] running `Command { std: "docker" "inspect" "c281657722b631bc31b7bf1299431ac00f0e03ec86929ce56e1b2668df74bc48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c281657722b631bc31b7bf1299431ac00f0e03ec86929ce56e1b2668df74bc48", kill_on_drop: false }`
[INFO] [stdout] c281657722b631bc31b7bf1299431ac00f0e03ec86929ce56e1b2668df74bc48