[INFO] fetching crate snd 0.0.0...
[INFO] checking snd-0.0.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate snd 0.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate snd 0.0.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate snd 0.0.0
[INFO] finished tweaking crates.io crate snd 0.0.0
[INFO] tweaked toml for crates.io crate snd 0.0.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--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 coreaudio-sys v0.2.8
[INFO] [stderr]   Downloaded bindgen v0.56.0
[INFO] [stderr]   Downloaded cpal v0.8.2
[INFO] [stderr]   Downloaded float-cmp v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c96c27f85db9bcc652fc3e6f264f6a7a07a6a231167a4c32a00daff80cc816a7
[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" "c96c27f85db9bcc652fc3e6f264f6a7a07a6a231167a4c32a00daff80cc816a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c96c27f85db9bcc652fc3e6f264f6a7a07a6a231167a4c32a00daff80cc816a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c96c27f85db9bcc652fc3e6f264f6a7a07a6a231167a4c32a00daff80cc816a7", kill_on_drop: false }`
[INFO] [stdout] c96c27f85db9bcc652fc3e6f264f6a7a07a6a231167a4c32a00daff80cc816a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3539d1fae304b5b9d1f6b025eeecd5aecc990bba43bd7c2b3b0aaf9d96bdba1
[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" "e3539d1fae304b5b9d1f6b025eeecd5aecc990bba43bd7c2b3b0aaf9d96bdba1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking cpal v0.8.2
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking snd v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Noise`
[INFO] [stdout]   --> src/synthesizer.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Noise,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Square`
[INFO] [stdout]   --> src/synthesizer.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Square,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Triangle`
[INFO] [stdout]   --> src/synthesizer.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     Triangle,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Noise`
[INFO] [stdout]   --> src/synthesizer.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Noise,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Square`
[INFO] [stdout]   --> src/synthesizer.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Square,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.22s
[INFO] running `Command { std: "docker" "inspect" "e3539d1fae304b5b9d1f6b025eeecd5aecc990bba43bd7c2b3b0aaf9d96bdba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3539d1fae304b5b9d1f6b025eeecd5aecc990bba43bd7c2b3b0aaf9d96bdba1", kill_on_drop: false }`
[INFO] [stdout] e3539d1fae304b5b9d1f6b025eeecd5aecc990bba43bd7c2b3b0aaf9d96bdba1