[INFO] crate objrs_frameworks_app_kit 0.0.2 is already in cache
[INFO] checking objrs_frameworks_app_kit-0.0.2 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate objrs_frameworks_app_kit 0.0.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate objrs_frameworks_app_kit 0.0.2 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate objrs_frameworks_app_kit 0.0.2
[INFO] finished tweaking crates.io crate objrs_frameworks_app_kit 0.0.2
[INFO] tweaked toml for crates.io crate objrs_frameworks_app_kit 0.0.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 279306ed30d975eeeb0365df7f7a47b13513bf290295e45b50660a62e698a125
[INFO] running `"docker" "start" "-a" "279306ed30d975eeeb0365df7f7a47b13513bf290295e45b50660a62e698a125"`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking objrs_runtime v0.0.2
[INFO] [stderr] error[E0740]: unions may not contain fields that need dropping
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/objrs_runtime-0.0.2/src/objc_exception.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     f: F,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `std::mem::ManuallyDrop` can be used to wrap the type
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/objrs_runtime-0.0.2/src/objc_exception.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     f: F,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0740`.
[INFO] [stderr] error: could not compile `objrs_runtime`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "279306ed30d975eeeb0365df7f7a47b13513bf290295e45b50660a62e698a125"`
[INFO] running `"docker" "rm" "-f" "279306ed30d975eeeb0365df7f7a47b13513bf290295e45b50660a62e698a125"`
[INFO] [stdout] 279306ed30d975eeeb0365df7f7a47b13513bf290295e45b50660a62e698a125