[INFO] updating cached repository jgall/obj_c_rust_test
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jgall/obj_c_rust_test
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jgall/obj_c_rust_test" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/jgall/obj_c_rust_test"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/jgall/obj_c_rust_test'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jgall/obj_c_rust_test" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/jgall/obj_c_rust_test"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/jgall/obj_c_rust_test'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d99b84868cb9ecc7c2762735db8b31f3642a9f17
[INFO] sha for GitHub repo jgall/obj_c_rust_test: d99b84868cb9ecc7c2762735db8b31f3642a9f17
[INFO] validating manifest of jgall/obj_c_rust_test on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jgall/obj_c_rust_test on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jgall/obj_c_rust_test
[INFO] finished frobbing jgall/obj_c_rust_test
[INFO] frobbed toml for jgall/obj_c_rust_test written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/jgall/obj_c_rust_test/Cargo.toml
[INFO] started frobbing jgall/obj_c_rust_test
[INFO] finished frobbing jgall/obj_c_rust_test
[INFO] frobbed toml for jgall/obj_c_rust_test written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/jgall/obj_c_rust_test/Cargo.toml
[INFO] crate jgall/obj_c_rust_test has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing jgall/obj_c_rust_test against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/jgall/obj_c_rust_test:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 69ca3a3d5e891c487d698bd1c71e59eaf72cdbdebb4140560e1b995555b0ad48
[INFO] running `"docker" "start" "-a" "69ca3a3d5e891c487d698bd1c71e59eaf72cdbdebb4140560e1b995555b0ad48"`
[INFO] [stderr]    Compiling malloc_buf v0.0.6
[INFO] [stderr]    Compiling objc v0.2.5
[INFO] [stderr]    Compiling obj_c_rust_test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `objc::declare::ClassDecl`
[INFO] [stderr]  --> src/class.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use objc::declare::ClassDecl;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Class`, `Object`, `Sel`
[INFO] [stderr]  --> src/class.rs:2:21
[INFO] [stderr]   |
[INFO] [stderr] 2 | use objc::runtime::{Class, Object, Sel};
[INFO] [stderr]   |                     ^^^^^  ^^^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:22:24
[INFO] [stderr]    |
[INFO] [stderr] 22 |       let my_box_class = register_class!(MyBox:NSObject with {
[INFO] [stderr]    |  ________________________^
[INFO] [stderr] 23 | |         (pub width: u32),
[INFO] [stderr] 24 | |         (priv height: u32),
[INFO] [stderr] 25 | |         (sel getThing:withOtherThing: <- my_method),
[INFO] [stderr] ...  |
[INFO] [stderr] 28 | |         }),
[INFO] [stderr] 29 | |     });
[INFO] [stderr]    | |______^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:22:24
[INFO] [stderr]    |
[INFO] [stderr] 22 |       let my_box_class = register_class!(MyBox:NSObject with {
[INFO] [stderr]    |  ________________________^
[INFO] [stderr] 23 | |         (pub width: u32),
[INFO] [stderr] 24 | |         (priv height: u32),
[INFO] [stderr] 25 | |         (sel getThing:withOtherThing: <- my_method),
[INFO] [stderr] ...  |
[INFO] [stderr] 28 | |         }),
[INFO] [stderr] 29 | |     });
[INFO] [stderr]    | |______^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:22:24
[INFO] [stderr]    |
[INFO] [stderr] 22 |       let my_box_class = register_class!(MyBox:NSObject with {
[INFO] [stderr]    |  ________________________^
[INFO] [stderr] 23 | |         (pub width: u32),
[INFO] [stderr] 24 | |         (priv height: u32),
[INFO] [stderr] 25 | |         (sel getThing:withOtherThing: <- my_method),
[INFO] [stderr] ...  |
[INFO] [stderr] 28 | |         }),
[INFO] [stderr] 29 | |     });
[INFO] [stderr]    | |______^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:22:24
[INFO] [stderr]    |
[INFO] [stderr] 22 |       let my_box_class = register_class!(MyBox:NSObject with {
[INFO] [stderr]    |  ________________________^
[INFO] [stderr] 23 | |         (pub width: u32),
[INFO] [stderr] 24 | |         (priv height: u32),
[INFO] [stderr] 25 | |         (sel getThing:withOtherThing: <- my_method),
[INFO] [stderr] ...  |
[INFO] [stderr] 28 | |         }),
[INFO] [stderr] 29 | |     });
[INFO] [stderr]    | |______^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:22:24
[INFO] [stderr]    |
[INFO] [stderr] 22 |       let my_box_class = register_class!(MyBox:NSObject with {
[INFO] [stderr]    |  ________________________^
[INFO] [stderr] 23 | |         (pub width: u32),
[INFO] [stderr] 24 | |         (priv height: u32),
[INFO] [stderr] 25 | |         (sel getThing:withOtherThing: <- my_method),
[INFO] [stderr] ...  |
[INFO] [stderr] 28 | |         }),
[INFO] [stderr] 29 | |     });
[INFO] [stderr]    | |______^ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:31:27
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let x: i32 = unsafe { msg_send![*obj, getThing:5i32 withOtherThing:6i32] };
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:46:32
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let obj: *mut Object = msg_send![cls, alloc];
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:47:32
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let obj: *mut Object = msg_send![obj, init];
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:57:20
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let hash_sel = sel!(hash);
[INFO] [stderr]    |                    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:64:32
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let hash: usize = unsafe { msg_send![*obj, hash] };
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/main.rs:17:30
[INFO] [stderr]    |
[INFO] [stderr] 17 |     extern "C" fn obj_method(obj: &mut Object, sel: Sel, i1: i32, i2: i32) -> i32 {
[INFO] [stderr]    |                              ^^^ help: consider prefixing with an underscore: `_obj`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sel`
[INFO] [stderr]   --> src/main.rs:17:48
[INFO] [stderr]    |
[INFO] [stderr] 17 |     extern "C" fn obj_method(obj: &mut Object, sel: Sel, i1: i32, i2: i32) -> i32 {
[INFO] [stderr]    |                                                ^^^ help: consider prefixing with an underscore: `_sel`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i1`
[INFO] [stderr]   --> src/main.rs:17:58
[INFO] [stderr]    |
[INFO] [stderr] 17 |     extern "C" fn obj_method(obj: &mut Object, sel: Sel, i1: i32, i2: i32) -> i32 {
[INFO] [stderr]    |                                                          ^^ help: consider prefixing with an underscore: `_i1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i2`
[INFO] [stderr]   --> src/main.rs:17:67
[INFO] [stderr]    |
[INFO] [stderr] 17 |     extern "C" fn obj_method(obj: &mut Object, sel: Sel, i1: i32, i2: i32) -> i32 {
[INFO] [stderr]    |                                                                   ^^ help: consider prefixing with an underscore: `_i2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/main.rs:26:68
[INFO] [stderr]    |
[INFO] [stderr] 26 |         (sel getThing2:(u32)t1 withOtherThing:(u32)t2 -> u32 with |obj, sel| {
[INFO] [stderr]    |                                                                    ^^^ help: consider prefixing with an underscore: `_obj`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sel`
[INFO] [stderr]   --> src/main.rs:26:73
[INFO] [stderr]    |
[INFO] [stderr] 26 |         (sel getThing2:(u32)t1 withOtherThing:(u32)t2 -> u32 with |obj, sel| {
[INFO] [stderr]    |                                                                         ^^^ help: consider prefixing with an underscore: `_sel`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t1`
[INFO] [stderr]   --> src/main.rs:26:29
[INFO] [stderr]    |
[INFO] [stderr] 26 |         (sel getThing2:(u32)t1 withOtherThing:(u32)t2 -> u32 with |obj, sel| {
[INFO] [stderr]    |                             ^^ help: consider prefixing with an underscore: `_t1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t2`
[INFO] [stderr]   --> src/main.rs:26:52
[INFO] [stderr]    |
[INFO] [stderr] 26 |         (sel getThing2:(u32)t1 withOtherThing:(u32)t2 -> u32 with |obj, sel| {
[INFO] [stderr]    |                                                    ^^ help: consider prefixing with an underscore: `_t2`
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.obj_c_rust_test.3rz8r90o-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f" "/opt/crater/target/debug/deps/obj_c_rust_test-23a60d10c606413f.2w9cu6vmzsq3xbkh.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libobjc-acf201fb6ad181b9.rlib" "/opt/crater/target/debug/deps/libmalloc_buf-d3136a1122cf9032.rlib" "/opt/crater/target/debug/deps/liblibc-c1089e11364d60ae.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-b9cdeeb7d71e069b.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-2c784314f5b61a49.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-3b6efc0e4ddb88fa.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-f958c03192217b33.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-6a937665f3cd6c5f.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-e29e11dee090b90f.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-83c4e27232163c87.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-39348c626a7cd664.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-a98540404781e6a7.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-f0f63061644276a5.rlib" "-Wl,-Bdynamic" "-lobjc" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/libobjc-acf201fb6ad181b9.rlib(objc-acf201fb6ad181b9.objc.93y8djrj-cgu.0.rcgu.o): In function `_RNnMsg_NbCsgr6cE4nPZOp_4objc7runtimeNuB5_6Object5class':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/objc-0.2.5/src/runtime.rs:464: undefined reference to `object_getClass'
[INFO] [stderr]           /opt/crater/target/debug/deps/libobjc-acf201fb6ad181b9.rlib(objc-acf201fb6ad181b9.objc.93y8djrj-cgu.11.rcgu.o): In function `_RNqXs_NwNuCsgr6cE4nPZOp_4objc2rc6strongNzB4_9StrongPtrNdNpNrCsfOXHOjakNhA_4core3ops4drop4Drop4drop':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/objc-0.2.5/src/rc/strong.rs:48: undefined reference to `objc_release'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `obj_c_rust_test`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "69ca3a3d5e891c487d698bd1c71e59eaf72cdbdebb4140560e1b995555b0ad48"`
[INFO] running `"docker" "rm" "-f" "69ca3a3d5e891c487d698bd1c71e59eaf72cdbdebb4140560e1b995555b0ad48"`
[INFO] [stdout] 69ca3a3d5e891c487d698bd1c71e59eaf72cdbdebb4140560e1b995555b0ad48