[INFO] fetching crate objc-rs 0.3.1...
[INFO] fixing objc-rs-0.3.1 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] extracting crate objc-rs 0.3.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate objc-rs 0.3.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate objc-rs 0.3.1
[INFO] tweaked toml for crates.io crate objc-rs 0.3.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate objc-rs 0.3.1 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate objc-rs 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded malloc_buf v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4172d8f13e3f913d5f6b56b90e4def955b9b19cdc6549c91995e2f17fe1e8eb6
[INFO] running `Command { std: "docker" "start" "4172d8f13e3f913d5f6b56b90e4def955b9b19cdc6549c91995e2f17fe1e8eb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4172d8f13e3f913d5f6b56b90e4def955b9b19cdc6549c91995e2f17fe1e8eb6" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4172d8f13e3f913d5f6b56b90e4def955b9b19cdc6549c91995e2f17fe1e8eb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4172d8f13e3f913d5f6b56b90e4def955b9b19cdc6549c91995e2f17fe1e8eb6" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]     Checking malloc_buf v1.0.0
[INFO] [stderr]     Checking objc-rs v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `objc`
[INFO] [stdout]  --> examples/example.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate objc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `objc-rs` (example "example") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: `extern` fn uses type `CustomStruct`, which is not FFI-safe
[INFO] [stdout]   --> src/test_utils.rs:84:75
[INFO] [stdout]    |
[INFO] [stdout] 84 |         extern "C" fn custom_obj_get_struct(_this: &Object, _cmd: Sel) -> CustomStruct {
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]    = note: this struct has unspecified layout
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]   --> src/test_utils.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct CustomStruct {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4172d8f13e3f913d5f6b56b90e4def955b9b19cdc6549c91995e2f17fe1e8eb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4172d8f13e3f913d5f6b56b90e4def955b9b19cdc6549c91995e2f17fe1e8eb6", kill_on_drop: false }`
[INFO] [stdout] 4172d8f13e3f913d5f6b56b90e4def955b9b19cdc6549c91995e2f17fe1e8eb6
