[INFO] fetching crate objrs_demo 0.0.2...
[INFO] checking objrs_demo-0.0.2 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate objrs_demo 0.0.2 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate objrs_demo 0.0.2 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-81/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded objrs_frameworks_metal_kit v0.0.2
[INFO] [stderr]   Downloaded objrs_frameworks_app_kit v0.0.2
[INFO] [stderr]   Downloaded objrs_frameworks_metal v0.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66486bd6f10925615e0beb35ab99102ff3cb0a34fbe76968653d5f71753145a4
[INFO] running `Command { std: "docker" "start" "-a" "66486bd6f10925615e0beb35ab99102ff3cb0a34fbe76968653d5f71753145a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66486bd6f10925615e0beb35ab99102ff3cb0a34fbe76968653d5f71753145a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66486bd6f10925615e0beb35ab99102ff3cb0a34fbe76968653d5f71753145a4", kill_on_drop: false }`
[INFO] [stdout] 66486bd6f10925615e0beb35ab99102ff3cb0a34fbe76968653d5f71753145a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81703bdcab0e23ac364e70a869f587390c6f0dd9fb2c51314e64dd7679233a90
[INFO] running `Command { std: "docker" "start" "-a" "81703bdcab0e23ac364e70a869f587390c6f0dd9fb2c51314e64dd7679233a90", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling objrs_macros v0.0.2
[INFO] [stderr]    Compiling objrs_frameworks_foundation_macros v0.0.2
[INFO] [stderr]     Checking objrs_runtime 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` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "81703bdcab0e23ac364e70a869f587390c6f0dd9fb2c51314e64dd7679233a90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81703bdcab0e23ac364e70a869f587390c6f0dd9fb2c51314e64dd7679233a90", kill_on_drop: false }`
[INFO] [stdout] 81703bdcab0e23ac364e70a869f587390c6f0dd9fb2c51314e64dd7679233a90