[INFO] fetching crate objc-rs 0.3.1...
[INFO] testing objc-rs-0.3.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate objc-rs 0.3.1 into /workspace/builds/worker-2-tc2/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-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate objc-rs 0.3.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c622280778a39063ee3f94a8c2a2c33b36b942c60b169ed97a3d84dee29af0db
[INFO] running `Command { std: "docker" "start" "-a" "c622280778a39063ee3f94a8c2a2c33b36b942c60b169ed97a3d84dee29af0db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c622280778a39063ee3f94a8c2a2c33b36b942c60b169ed97a3d84dee29af0db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c622280778a39063ee3f94a8c2a2c33b36b942c60b169ed97a3d84dee29af0db", kill_on_drop: false }`
[INFO] [stdout] c622280778a39063ee3f94a8c2a2c33b36b942c60b169ed97a3d84dee29af0db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e96400fbcb84f81cdddcc09f86268d57bd5a16d786b4bda0d7f8f981ac86c3b
[INFO] running `Command { std: "docker" "start" "-a" "0e96400fbcb84f81cdddcc09f86268d57bd5a16d786b4bda0d7f8f981ac86c3b", kill_on_drop: false }`
[INFO] [stderr]    Compiling malloc_buf v1.0.0
[INFO] [stderr]    Compiling objc-rs v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "0e96400fbcb84f81cdddcc09f86268d57bd5a16d786b4bda0d7f8f981ac86c3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e96400fbcb84f81cdddcc09f86268d57bd5a16d786b4bda0d7f8f981ac86c3b", kill_on_drop: false }`
[INFO] [stdout] 0e96400fbcb84f81cdddcc09f86268d57bd5a16d786b4bda0d7f8f981ac86c3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10e158d37e01a75a2786297420a251e59c65a4178ccd61c2644b5db354795bee
[INFO] running `Command { std: "docker" "start" "-a" "10e158d37e01a75a2786297420a251e59c65a4178ccd61c2644b5db354795bee", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note:  "cc" "-m64" "/opt/rustwide/target/debug/deps/rustcT6is72/symbols.o" "<5 object files omitted>" "-Wl,--as-needed" "-Wl,-Bdynamic" "-lobjc" "-Wl,-Bstatic" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libtest-*,libgetopts-*,librustc_std_workspace_std-*}.rlib" "/opt/rustwide/target/debug/deps/{libmalloc_buf-dbc0847df0930d67,liblibc-beaac0770c9b643f}.rlib" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libstd-*,libpanic_unwind-*,libobject-*,libmemchr-*,libaddr2line-*,libgimli-*,libcfg_if-*,librustc_demangle-*,libstd_detect-*,libhashbrown-*,librustc_std_workspace_alloc-*,libminiz_oxide-*,libadler2-*,libunwind-*,liblibc-*,librustc_std_workspace_core-*,liballoc-*,libcore-*,libcompiler_builtins-*}.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-L" "/opt/rustwide/target/debug/deps/rustcT6is72/raw-dylibs" "-B<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/objc_rs-e441550e2d0c6019" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: some arguments are omitted. use `--verbose` to show all linker arguments
[INFO] [stdout]   = note: rust-lld: error: undefined symbol: protocol_addProtocol
[INFO] [stdout]           >>> referenced by declare.rs:323 (src/declare.rs:323)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/deps/objc_rs-e441550e2d0c6019.objc_rs.c8c0223cc9fc56d2-cgu.0.rcgu.o:(objc_rs::declare::ProtocolDecl::add_protocol::h0e3c371d9ebe242f)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: protocol_addMethodDescription
[INFO] [stdout]           >>> referenced by declare.rs:292 (src/declare.rs:292)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/deps/objc_rs-e441550e2d0c6019.objc_rs.c8c0223cc9fc56d2-cgu.0.rcgu.o:(objc_rs::declare::ProtocolDecl::add_method_description_common::h655750034225a7ba)
[INFO] [stdout]           >>> referenced by declare.rs:292 (src/declare.rs:292)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/deps/objc_rs-e441550e2d0c6019.objc_rs.c8c0223cc9fc56d2-cgu.0.rcgu.o:(objc_rs::declare::ProtocolDecl::add_method_description_common::h78895fc5f32c9c59)
[INFO] [stdout]           >>> referenced by declare.rs:292 (src/declare.rs:292)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/deps/objc_rs-e441550e2d0c6019.objc_rs.c8c0223cc9fc56d2-cgu.0.rcgu.o:(objc_rs::declare::ProtocolDecl::add_method_description_common::ha5e8d525b3b2feb8)
[INFO] [stdout]           >>> referenced 1 more times
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: objc_allocateProtocol
[INFO] [stdout]           >>> referenced by declare.rs:264 (src/declare.rs:264)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/deps/objc_rs-e441550e2d0c6019.objc_rs.c8c0223cc9fc56d2-cgu.0.rcgu.o:(objc_rs::declare::ProtocolDecl::new::h34093e8678f074f7)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: objc_registerProtocol
[INFO] [stdout]           >>> referenced by declare.rs:331 (src/declare.rs:331)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/deps/objc_rs-e441550e2d0c6019.objc_rs.c8c0223cc9fc56d2-cgu.0.rcgu.o:(objc_rs::declare::ProtocolDecl::register::hc2289b2091b4a719)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: objc_copyClassList
[INFO] [stdout]           >>> referenced by runtime.rs:295 (src/runtime.rs:295)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/deps/objc_rs-e441550e2d0c6019.objc_rs.c8c0223cc9fc56d2-cgu.0.rcgu.o:(objc_rs::runtime::Class::classes::h63120180aac34cfd)
[INFO] [stdout]           
[INFO] [stdout]           rust-lld: error: undefined symbol: object_getClass
[INFO] [stdout]           >>> referenced by runtime.rs:327 (src/runtime.rs:327)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/deps/objc_rs-e441550e2d0c6019.objc_rs.c8c0223cc9fc56d2-cgu.0.rcgu.o:(objc_rs::runtime::Class::metaclass::h805b595c737a2346)
[INFO] [stdout]           >>> referenced by runtime.rs:467 (src/runtime.rs:467)
[INFO] [stdout]           >>>               /opt/rustwide/target/debug/deps/objc_rs-e441550e2d0c6019.objc_rs.c8c0223cc9fc56d2-cgu.0.rcgu.o:(objc_rs::runtime::Object::class::h32674b651b81e1cf)
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `objc-rs` (lib test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "10e158d37e01a75a2786297420a251e59c65a4178ccd61c2644b5db354795bee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10e158d37e01a75a2786297420a251e59c65a4178ccd61c2644b5db354795bee", kill_on_drop: false }`
[INFO] [stdout] 10e158d37e01a75a2786297420a251e59c65a4178ccd61c2644b5db354795bee
