[INFO] fetching crate audio_buffer_interface 0.1.0...
[INFO] checking audio_buffer_interface-0.1.0 against try#fcfb0ffc7ed7fc631df1136063939ef648434735 for pr-152543
[INFO] extracting crate audio_buffer_interface 0.1.0 into /workspace/builds/worker-1-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-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate audio_buffer_interface 0.1.0 on toolchain fcfb0ffc7ed7fc631df1136063939ef648434735
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fcfb0ffc7ed7fc631df1136063939ef648434735" "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" "+fcfb0ffc7ed7fc631df1136063939ef648434735" "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" "+fcfb0ffc7ed7fc631df1136063939ef648434735" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+fcfb0ffc7ed7fc631df1136063939ef648434735" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91158c49b04dfc15d8abbfa6d3826cdd8d0acbe6a63680126f36734a71bb1433
[INFO] running `Command { std: "docker" "start" "-a" "91158c49b04dfc15d8abbfa6d3826cdd8d0acbe6a63680126f36734a71bb1433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91158c49b04dfc15d8abbfa6d3826cdd8d0acbe6a63680126f36734a71bb1433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91158c49b04dfc15d8abbfa6d3826cdd8d0acbe6a63680126f36734a71bb1433", kill_on_drop: false }`
[INFO] [stdout] 91158c49b04dfc15d8abbfa6d3826cdd8d0acbe6a63680126f36734a71bb1433
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+fcfb0ffc7ed7fc631df1136063939ef648434735" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1fd1b440f15d8b732dca94ccf6aa9db0d74d061439189692b7d46dfc82f49a9
[INFO] running `Command { std: "docker" "start" "-a" "d1fd1b440f15d8b732dca94ccf6aa9db0d74d061439189692b7d46dfc82f49a9", kill_on_drop: false }`
[INFO] [stderr]     Checking 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 <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 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] 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] For more information about this error, try `rustc --explain E0446`.
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `audio_buffer_interface` (lib test) due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "d1fd1b440f15d8b732dca94ccf6aa9db0d74d061439189692b7d46dfc82f49a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1fd1b440f15d8b732dca94ccf6aa9db0d74d061439189692b7d46dfc82f49a9", kill_on_drop: false }`
[INFO] [stdout] d1fd1b440f15d8b732dca94ccf6aa9db0d74d061439189692b7d46dfc82f49a9