[INFO] fetching crate cubeb-sys 0.5.3...
[INFO] extracting crate cubeb-sys 0.5.3 into work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/cubeb-sys/0.5.3
[INFO] extracting crate cubeb-sys 0.5.3 into work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/reg/cubeb-sys/0.5.3
[INFO] validating manifest of cubeb-sys-0.5.3 on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cubeb-sys-0.5.3 on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cubeb-sys-0.5.3
[INFO] finished frobbing cubeb-sys-0.5.3
[INFO] frobbed toml for cubeb-sys-0.5.3 written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/cubeb-sys/0.5.3/Cargo.toml
[INFO] started frobbing cubeb-sys-0.5.3
[INFO] finished frobbing cubeb-sys-0.5.3
[INFO] frobbed toml for cubeb-sys-0.5.3 written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/reg/cubeb-sys/0.5.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cubeb-sys-0.5.3 against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-6/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/cubeb-sys/0.5.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 633b2749d9327b8cd5614292951890ead84f8bed9f379418f4b5ddb438160f19
[INFO] running `"docker" "start" "-a" "633b2749d9327b8cd5614292951890ead84f8bed9f379418f4b5ddb438160f19"`
[INFO] [stderr]    Compiling cubeb-sys v0.5.3 (/opt/crater/workdir)
[INFO] [stderr] warning: `extern` block uses type `()` which is not FFI-safe: tuples have unspecified layout
[INFO] [stderr]   --> src/log.rs:21:23
[INFO] [stderr]    |
[INFO] [stderr] 21 |         log_callback: cubeb_log_callback,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(improper_ctypes)] on by default
[INFO] [stderr]    = help: consider using a struct instead
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `()` which is not FFI-safe: tuples have unspecified layout
[INFO] [stderr]   --> src/log.rs:25:38
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub static g_cubeb_log_callback: cubeb_log_callback;
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a struct instead
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `()` which is not FFI-safe: tuples have unspecified layout
[INFO] [stderr]   --> src/log.rs:21:23
[INFO] [stderr]    |
[INFO] [stderr] 21 |         log_callback: cubeb_log_callback,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(improper_ctypes)] on by default
[INFO] [stderr]    = help: consider using a struct instead
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` block uses type `()` which is not FFI-safe: tuples have unspecified layout
[INFO] [stderr]   --> src/log.rs:25:38
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub static g_cubeb_log_callback: cubeb_log_callback;
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a struct instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.41s
[INFO] running `"docker" "inspect" "633b2749d9327b8cd5614292951890ead84f8bed9f379418f4b5ddb438160f19"`
[INFO] running `"docker" "rm" "-f" "633b2749d9327b8cd5614292951890ead84f8bed9f379418f4b5ddb438160f19"`
[INFO] [stdout] 633b2749d9327b8cd5614292951890ead84f8bed9f379418f4b5ddb438160f19