[INFO] fetching crate audio-device 0.1.0-alpha.6...
[INFO] checking audio-device-0.1.0-alpha.6 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate audio-device 0.1.0-alpha.6 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate audio-device 0.1.0-alpha.6 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate audio-device 0.1.0-alpha.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate audio-device 0.1.0-alpha.6
[INFO] tweaked toml for crates.io crate audio-device 0.1.0-alpha.6 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate audio-device 0.1.0-alpha.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded generator v0.6.25
[INFO] [stderr]   Downloaded audio-device-alsa-sys v0.1.0-alpha.1
[INFO] [stderr]   Downloaded loom v0.4.1
[INFO] [stderr]   Downloaded audio v0.2.0-alpha.3
[INFO] [stderr]   Downloaded audio-device-windows-sys v0.1.0-alpha.1
[INFO] [stderr]   Downloaded ste v0.1.0-alpha.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 765bc15a54bd2ec00d10912412b6a3fc3e74a06aa2f3ebba20a7792d1d8aef98
[INFO] running `Command { std: "docker" "start" "-a" "765bc15a54bd2ec00d10912412b6a3fc3e74a06aa2f3ebba20a7792d1d8aef98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "765bc15a54bd2ec00d10912412b6a3fc3e74a06aa2f3ebba20a7792d1d8aef98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "765bc15a54bd2ec00d10912412b6a3fc3e74a06aa2f3ebba20a7792d1d8aef98", kill_on_drop: false }`
[INFO] [stdout] 765bc15a54bd2ec00d10912412b6a3fc3e74a06aa2f3ebba20a7792d1d8aef98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f743ee8ae09050f7eeac8ef1625b1a7621c785822864de3eb853cb8c3fa444db
[INFO] running `Command { std: "docker" "start" "-a" "f743ee8ae09050f7eeac8ef1625b1a7621c785822864de3eb853cb8c3fa444db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking audio-core v0.2.0-alpha.3
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]     Checking audio v0.2.0-alpha.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking ste v0.1.0-alpha.9
[INFO] [stderr]     Checking audio-device v0.1.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `::std::thread`
[INFO] [stdout]  --> src/loom/mod.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) use ::std::thread;
[INFO] [stdout]   |                ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::std::sync::Arc`
[INFO] [stdout]  --> src/loom/sync.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) use ::std::sync::Arc;
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::std::thread`
[INFO] [stdout]  --> src/loom/mod.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) use ::std::thread;
[INFO] [stdout]   |                ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::std::sync::Arc`
[INFO] [stdout]  --> src/loom/sync.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) use ::std::sync::Arc;
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Mutex`
[INFO] [stdout]   --> src/loom/sync.rs:23:19
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub(crate) struct Mutex<T> {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/loom/sync.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(crate) fn new(value: T) -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lock`
[INFO] [stdout]   --> src/loom/sync.rs:34:19
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub(crate) fn lock(&self) -> MutexGuard<'_, T> {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Mutex`
[INFO] [stdout]   --> src/loom/sync.rs:23:19
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub(crate) struct Mutex<T> {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/loom/sync.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(crate) fn new(value: T) -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lock`
[INFO] [stdout]   --> src/loom/sync.rs:34:19
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub(crate) fn lock(&self) -> MutexGuard<'_, T> {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.46s
[INFO] running `Command { std: "docker" "inspect" "f743ee8ae09050f7eeac8ef1625b1a7621c785822864de3eb853cb8c3fa444db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f743ee8ae09050f7eeac8ef1625b1a7621c785822864de3eb853cb8c3fa444db", kill_on_drop: false }`
[INFO] [stdout] f743ee8ae09050f7eeac8ef1625b1a7621c785822864de3eb853cb8c3fa444db