[INFO] fetching crate audio_buffer_interface 0.1.0...
[INFO] testing audio_buffer_interface-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate audio_buffer_interface 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate audio_buffer_interface 0.1.0
[INFO] finished tweaking crates.io crate audio_buffer_interface 0.1.0
[INFO] tweaked toml for crates.io crate audio_buffer_interface 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate audio_buffer_interface 0.1.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e7b5f5b29060acf4e2655bc5d78b0bc4c2f1b7a940417f42ec275cc6649ee18
[INFO] running `Command { std: "docker" "start" "-a" "9e7b5f5b29060acf4e2655bc5d78b0bc4c2f1b7a940417f42ec275cc6649ee18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e7b5f5b29060acf4e2655bc5d78b0bc4c2f1b7a940417f42ec275cc6649ee18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e7b5f5b29060acf4e2655bc5d78b0bc4c2f1b7a940417f42ec275cc6649ee18", kill_on_drop: false }`
[INFO] [stdout] 9e7b5f5b29060acf4e2655bc5d78b0bc4c2f1b7a940417f42ec275cc6649ee18
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae9261475cca3a712c6f8a9de5d0ab15bc67754b1374cc2bafff257195a954fb
[INFO] running `Command { std: "docker" "start" "-a" "ae9261475cca3a712c6f8a9de5d0ab15bc67754b1374cc2bafff257195a954fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling audio_buffer_interface v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0446]: private trait `Captures<&'a <Self as AudioBufferIterator>::Item>` in public interface
[INFO] [stdout]   --> src/lib.rs:40:31
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait Captures<U> {}
[INFO] [stdout]    | ----------------- `Captures<&'a <Self as AudioBufferIterator>::Item>` declared as private
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn chans<'a>(&'a self) -> impl Iterator<Item = impl Iterator<Item = &'a Self::Item>>
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private trait `Captures<&'a <Self as AudioBufferIterator>::Item>` in public interface
[INFO] [stdout]   --> src/lib.rs:40:52
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait Captures<U> {}
[INFO] [stdout]    | ----------------- `Captures<&'a <Self as AudioBufferIterator>::Item>` declared as private
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn chans<'a>(&'a self) -> impl Iterator<Item = impl Iterator<Item = &'a Self::Item>>
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private trait `Captures<&'a mut <Self as AudioBufferIterator>::Item>` in public interface
[INFO] [stdout]   --> src/lib.rs:55:39
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait Captures<U> {}
[INFO] [stdout]    | ----------------- `Captures<&'a mut <Self as AudioBufferIterator>::Item>` declared as private
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn chans_mut<'a>(&'a mut self) -> impl Iterator<Item = impl Iterator<Item = &'a mut Self::Item>>
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private trait `Captures<&'a mut <Self as AudioBufferIterator>::Item>` in public interface
[INFO] [stdout]   --> src/lib.rs:55:60
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait Captures<U> {}
[INFO] [stdout]    | ----------------- `Captures<&'a mut <Self as AudioBufferIterator>::Item>` declared as private
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn chans_mut<'a>(&'a mut self) -> impl Iterator<Item = impl Iterator<Item = &'a mut Self::Item>>
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private trait `Captures<&'a <Self as AudioBufferIterator>::Item>` in public interface
[INFO] [stdout]   --> src/lib.rs:82:32
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait Captures<U> {}
[INFO] [stdout]    | ----------------- `Captures<&'a <Self as AudioBufferIterator>::Item>` declared as private
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn frames<'a>(&'a self) -> impl Iterator<Item = impl Iterator<Item = &'a Self::Item>>
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private trait `Captures<&'a <Self as AudioBufferIterator>::Item>` in public interface
[INFO] [stdout]   --> src/lib.rs:82:53
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait Captures<U> {}
[INFO] [stdout]    | ----------------- `Captures<&'a <Self as AudioBufferIterator>::Item>` declared as private
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn frames<'a>(&'a self) -> impl Iterator<Item = impl Iterator<Item = &'a Self::Item>>
[INFO] [stdout]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private trait `Captures<&'a mut <Self as AudioBufferIterator>::Item>` in public interface
[INFO] [stdout]   --> src/lib.rs:99:40
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait Captures<U> {}
[INFO] [stdout]    | ----------------- `Captures<&'a mut <Self as AudioBufferIterator>::Item>` declared as private
[INFO] [stdout] ...
[INFO] [stdout] 99 |     fn frames_mut<'a>(&'a mut self) -> impl Iterator<Item = impl Iterator<Item = &'a mut Self::Item>>
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0446]: private trait `Captures<&'a mut <Self as AudioBufferIterator>::Item>` in public interface
[INFO] [stdout]   --> src/lib.rs:99:61
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait Captures<U> {}
[INFO] [stdout]    | ----------------- `Captures<&'a mut <Self as AudioBufferIterator>::Item>` declared as private
[INFO] [stdout] ...
[INFO] [stdout] 99 |     fn frames_mut<'a>(&'a mut self) -> impl Iterator<Item = impl Iterator<Item = &'a mut Self::Item>>
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0446`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `audio_buffer_interface` (lib) due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "ae9261475cca3a712c6f8a9de5d0ab15bc67754b1374cc2bafff257195a954fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae9261475cca3a712c6f8a9de5d0ab15bc67754b1374cc2bafff257195a954fb", kill_on_drop: false }`
[INFO] [stdout] ae9261475cca3a712c6f8a9de5d0ab15bc67754b1374cc2bafff257195a954fb
