$ rake
(in /home/clgc/languages/rbx-cpp)
Running 469 tests...............................
In TestChannel::test_receive_causes_event_block:
./vm/test/test_channel.hpp:95: Error: Expected (chan->waiting->locate(state, 0) == state->globals.current_thread.get()), found ({ 0E 00 00 00  } != { 44 A8 BB B7  })
.............
In TestNativeFunction::test_find_symbol_in_library:
./vm/test/test_nativefunction.hpp:66: Error: Assertion failed: ep
.
In TestNativeFunction::test_bind:
./vm/test/test_nativefunction.hpp:86: Error: Assertion failed: !func->nil_p()
.................................................................................................ERROR: Program used external function '_ZN8rubinius4Task13simple_returnEPNS_6ObjectE' which could not be resolved!
rake aborted!
Command failed with status (): [vm/test/runner...]

(See full trace by running task with --trace)