[INFO] crate emu 0.1.3 is already in cache
[INFO] extracting crate emu 0.1.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/emu/0.1.3
[INFO] extracting crate emu 0.1.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/emu/0.1.3
[INFO] validating manifest of emu-0.1.3 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of emu-0.1.3 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing emu-0.1.3
[INFO] finished frobbing emu-0.1.3
[INFO] frobbed toml for emu-0.1.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/emu/0.1.3/Cargo.toml
[INFO] started frobbing emu-0.1.3
[INFO] finished frobbing emu-0.1.3
[INFO] frobbed toml for emu-0.1.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/emu/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing emu-0.1.3 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/emu/0.1.3:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 98732e38cc7d4963571d0ac1b80d0d48d5305665fd1c0552b526806b6c86b42a
[INFO] running `"docker" "start" "-a" "98732e38cc7d4963571d0ac1b80d0d48d5305665fd1c0552b526806b6c86b42a"`
[INFO] [stderr]    Compiling coreaudio-sys v0.1.2
[INFO] [stderr] error[E0455]: native frameworks are only available on macOS targets
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/coreaudio-sys-0.1.2/src/audio_unit.rs:6380:1
[INFO] [stderr]      |
[INFO] [stderr] 6380 | #[link(name = "AudioUnit", kind = "framework")]
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0455]: native frameworks are only available on macOS targets
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/coreaudio-sys-0.1.2/src/audio_unit.rs:6739:1
[INFO] [stderr]      |
[INFO] [stderr] 6739 | #[link(name = "AudioUnit", kind = "framework")]
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0455`.
[INFO] [stderr] error: Could not compile `coreaudio-sys`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "98732e38cc7d4963571d0ac1b80d0d48d5305665fd1c0552b526806b6c86b42a"`
[INFO] running `"docker" "rm" "-f" "98732e38cc7d4963571d0ac1b80d0d48d5305665fd1c0552b526806b6c86b42a"`
[INFO] [stdout] 98732e38cc7d4963571d0ac1b80d0d48d5305665fd1c0552b526806b6c86b42a