[INFO] fetching crate url2audio 0.2.4...
[INFO] checking url2audio-0.2.4 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate url2audio 0.2.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate url2audio 0.2.4 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate url2audio 0.2.4
[INFO] finished tweaking crates.io crate url2audio 0.2.4
[INFO] tweaked toml for crates.io crate url2audio 0.2.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate url2audio 0.2.4 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded symphonia-codec-alac v0.5.4
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 254a65f11ecbc201e930de3c07b177f31b6af35495a3e65f38ecd6a99a0bd41b
[INFO] running `Command { std: "docker" "start" "-a" "254a65f11ecbc201e930de3c07b177f31b6af35495a3e65f38ecd6a99a0bd41b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "254a65f11ecbc201e930de3c07b177f31b6af35495a3e65f38ecd6a99a0bd41b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "254a65f11ecbc201e930de3c07b177f31b6af35495a3e65f38ecd6a99a0bd41b", kill_on_drop: false }`
[INFO] [stdout] 254a65f11ecbc201e930de3c07b177f31b6af35495a3e65f38ecd6a99a0bd41b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e83ea28f2bec2bfce61a281c64232e9bdc0b1cb6f33475cab845765990cf7a5
[INFO] running `Command { std: "docker" "start" "-a" "2e83ea28f2bec2bfce61a281c64232e9bdc0b1cb6f33475cab845765990cf7a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rustfft v6.2.0
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[INFO] [stderr]     Checking url2audio v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]   --> src/cpalaudio.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait AudioOutput {
[INFO] [stdout]    |           ----------- method in this trait
[INFO] [stdout] 19 |     fn write(&mut self, decoded: AudioBufferRef<'_>) -> Result<()>;
[INFO] [stdout] 20 |     fn flush(&mut self);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]   --> src/cpalaudio.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait AudioOutput {
[INFO] [stdout]    |           ----------- method in this trait
[INFO] [stdout] 19 |     fn write(&mut self, decoded: AudioBufferRef<'_>) -> Result<()>;
[INFO] [stdout] 20 |     fn flush(&mut self);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 22.87s
[INFO] running `Command { std: "docker" "inspect" "2e83ea28f2bec2bfce61a281c64232e9bdc0b1cb6f33475cab845765990cf7a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e83ea28f2bec2bfce61a281c64232e9bdc0b1cb6f33475cab845765990cf7a5", kill_on_drop: false }`
[INFO] [stdout] 2e83ea28f2bec2bfce61a281c64232e9bdc0b1cb6f33475cab845765990cf7a5