make check -C src/rust-cocoa
rustc  /Users/user/servo/src/rust-cocoa/cocoa.rc -o cocoa-test --test
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug
note: try running with RUST_LOG=rustc=0,::rt::backtrace to get further details and report the results to github.com/mozilla/rust/issues
make[1]: *** [cocoa-test] Error 101
make: *** [check-rust-cocoa] Error 2

rust: task failed at 'Assertion res as int != 0 failed', /Users/user/rust/src/libcore/flate.rs:48
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug
note: try running with RUST_LOG=rustc=0,::rt::backtrace to get further details and report the results to github.com/mozilla/rust/issues
rust: task failed at 'explicit failure', /Users/user/rust/src/rustc/driver/rustc.rs:265
rust: domain main @0x7fc819800010 root task failed
rust: task failed at 'killed', /Users/user/rust/src/libcore/task.rs:549