[INFO] fetching crate objrs_demo 0.0.2...
[INFO] checking objrs_demo-0.0.2 against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] extracting crate objrs_demo 0.0.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate objrs_demo 0.0.2 on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate objrs_demo 0.0.2
[INFO] finished tweaking crates.io crate objrs_demo 0.0.2
[INFO] tweaked toml for crates.io crate objrs_demo 0.0.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded objrs_frameworks_metal_kit v0.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 36dd601db38737f4da378fc9aa70f6357b68ad2e287bec5b482ea38ca61f5d5e
[INFO] running `Command { std: "docker" "start" "-a" "36dd601db38737f4da378fc9aa70f6357b68ad2e287bec5b482ea38ca61f5d5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36dd601db38737f4da378fc9aa70f6357b68ad2e287bec5b482ea38ca61f5d5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36dd601db38737f4da378fc9aa70f6357b68ad2e287bec5b482ea38ca61f5d5e", kill_on_drop: false }`
[INFO] [stdout] 36dd601db38737f4da378fc9aa70f6357b68ad2e287bec5b482ea38ca61f5d5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4152175d8d0d7c82ecf9c28473af3b8769671f8c3b00cf8a177e970329bda125
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4152175d8d0d7c82ecf9c28473af3b8769671f8c3b00cf8a177e970329bda125", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking objrs_runtime v0.0.2
[INFO] [stderr]    Compiling objrs_macros v0.0.2
[INFO] [stderr]    Compiling objrs_frameworks_foundation_macros v0.0.2
[INFO] [stdout] error[E0740]: unions may not contain fields that need dropping
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/objrs_runtime-0.0.2/src/objc_exception.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     f: F,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `std::mem::ManuallyDrop` can be used to wrap the type
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/objrs_runtime-0.0.2/src/objc_exception.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     f: F,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0740`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `objrs_runtime`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4152175d8d0d7c82ecf9c28473af3b8769671f8c3b00cf8a177e970329bda125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4152175d8d0d7c82ecf9c28473af3b8769671f8c3b00cf8a177e970329bda125", kill_on_drop: false }`
[INFO] [stdout] 4152175d8d0d7c82ecf9c28473af3b8769671f8c3b00cf8a177e970329bda125