[INFO] fetching crate synth-music 0.2.1...
[INFO] checking synth-music-0.2.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate synth-music 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate synth-music 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate synth-music 0.2.1
[INFO] tweaked toml for crates.io crate synth-music 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate synth-music 0.2.1 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate synth-music 0.2.1 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e83d77b9f15c02dafed64789d552d76400f850bb4b855d4bc9be96dce7b4856
[INFO] running `Command { std: "docker" "start" "-a" "5e83d77b9f15c02dafed64789d552d76400f850bb4b855d4bc9be96dce7b4856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e83d77b9f15c02dafed64789d552d76400f850bb4b855d4bc9be96dce7b4856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e83d77b9f15c02dafed64789d552d76400f850bb4b855d4bc9be96dce7b4856", kill_on_drop: false }`
[INFO] [stdout] 5e83d77b9f15c02dafed64789d552d76400f850bb4b855d4bc9be96dce7b4856
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9a693bc1bfbcf387049be9a4fd7ab23da1bed695a63b12457b5c1d19009ad83
[INFO] running `Command { std: "docker" "start" "-a" "d9a693bc1bfbcf387049be9a4fd7ab23da1bed695a63b12457b5c1d19009ad83", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling portable-atomic v1.9.0
[INFO] [stderr]     Checking strength_reduce v0.2.4
[INFO] [stderr]     Checking bytemuck v1.18.0
[INFO] [stderr]    Compiling rustfft v6.2.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking primal-check v0.3.4
[INFO] [stderr]     Checking transpose v0.2.3
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking indicatif v0.17.8
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking realfft v3.4.0
[INFO] [stderr]     Checking synth-music v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/file_export/wav_export.rs:83:19
[INFO] [stdout]    |
[INFO] [stdout] 83 |             path: PathBuf::from_str("unnamed.wav").unwrap(),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `synth-music` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/file_export/wav_export.rs:83:19
[INFO] [stdout]    |
[INFO] [stdout] 83 |             path: PathBuf::from_str("unnamed.wav").unwrap(),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `synth-music` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d9a693bc1bfbcf387049be9a4fd7ab23da1bed695a63b12457b5c1d19009ad83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9a693bc1bfbcf387049be9a4fd7ab23da1bed695a63b12457b5c1d19009ad83", kill_on_drop: false }`
[INFO] [stdout] d9a693bc1bfbcf387049be9a4fd7ab23da1bed695a63b12457b5c1d19009ad83