[INFO] fetching crate objrs_runtime 0.0.2...
[INFO] testing objrs_runtime-0.0.2 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate objrs_runtime 0.0.2 into /workspace/builds/worker-108/source
[INFO] validating manifest of crates.io crate objrs_runtime 0.0.2 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate objrs_runtime 0.0.2
[INFO] finished tweaking crates.io crate objrs_runtime 0.0.2
[INFO] tweaked toml for crates.io crate objrs_runtime 0.0.2 written to /workspace/builds/worker-108/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04336235e9311d059b492adf68ab9e81bbd0f334df055abc3ad5a25ea34e1ca0
[INFO] running `Command { std: "docker" "start" "-a" "04336235e9311d059b492adf68ab9e81bbd0f334df055abc3ad5a25ea34e1ca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04336235e9311d059b492adf68ab9e81bbd0f334df055abc3ad5a25ea34e1ca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04336235e9311d059b492adf68ab9e81bbd0f334df055abc3ad5a25ea34e1ca0", kill_on_drop: false }`
[INFO] [stdout] 04336235e9311d059b492adf68ab9e81bbd0f334df055abc3ad5a25ea34e1ca0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0adfe26051a02c17cec1735fda2ee6125737a5986b4a2af7232739965caa6972
[INFO] running `Command { std: "docker" "start" "-a" "0adfe26051a02c17cec1735fda2ee6125737a5986b4a2af7232739965caa6972", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling objrs_runtime v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/objc_exception.rs:94:11
[INFO] [stdout]    |
[INFO] [stdout] 94 |   #[allow(unions_with_drop_fields)]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/objc_exception.rs:109:43
[INFO] [stdout]     |
[INFO] [stdout] 109 |   let mut exception = unsafe { core::mem::uninitialized() };
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0740]: unions may not contain fields that need dropping
[INFO] [stdout]   --> 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]   --> 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; 2 warnings emitted
[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; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0adfe26051a02c17cec1735fda2ee6125737a5986b4a2af7232739965caa6972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0adfe26051a02c17cec1735fda2ee6125737a5986b4a2af7232739965caa6972", kill_on_drop: false }`
[INFO] [stdout] 0adfe26051a02c17cec1735fda2ee6125737a5986b4a2af7232739965caa6972