[INFO] fetching crate audio-processor-utility 2.1.0...
[INFO] checking audio-processor-utility-2.1.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3
[INFO] extracting crate audio-processor-utility 2.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate audio-processor-utility 2.1.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate audio-processor-utility 2.1.0
[INFO] finished tweaking crates.io crate audio-processor-utility 2.1.0
[INFO] tweaked toml for crates.io crate audio-processor-utility 2.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate audio-processor-utility 2.1.0 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a147dd2b4db00c9cfceb1c11df23b48b969bec0f68865e30731576f0d65ab27
[INFO] running `Command { std: "docker" "start" "-a" "5a147dd2b4db00c9cfceb1c11df23b48b969bec0f68865e30731576f0d65ab27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a147dd2b4db00c9cfceb1c11df23b48b969bec0f68865e30731576f0d65ab27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a147dd2b4db00c9cfceb1c11df23b48b969bec0f68865e30731576f0d65ab27", kill_on_drop: false }`
[INFO] [stdout] 5a147dd2b4db00c9cfceb1c11df23b48b969bec0f68865e30731576f0d65ab27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f34e4e7c51f3fd4f01ef7d453b1ac6bdf2b8eb5764d404a2dad76cfba781d72
[INFO] running `Command { std: "docker" "start" "-a" "8f34e4e7c51f3fd4f01ef7d453b1ac6bdf2b8eb5764d404a2dad76cfba781d72", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking bytemuck v1.13.1
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling winnow v0.3.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling cmake v0.1.49
[INFO] [stderr]    Compiling toml_datetime v0.6.1
[INFO] [stderr]     Checking encoding_rs v0.8.32
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.53/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]     Checking basedrop v0.1.2
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustfft v6.1.0
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8f34e4e7c51f3fd4f01ef7d453b1ac6bdf2b8eb5764d404a2dad76cfba781d72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f34e4e7c51f3fd4f01ef7d453b1ac6bdf2b8eb5764d404a2dad76cfba781d72", kill_on_drop: false }`
[INFO] [stdout] 8f34e4e7c51f3fd4f01ef7d453b1ac6bdf2b8eb5764d404a2dad76cfba781d72