$ rake
(in /home/clgc/languages/rbx)
Running 854 tests......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................OK!
*** Running with SydneyParser enabled ***
#<LookupTable :st_ino=>8810, :st_gid=>286, :st_blocks=>569, :st_mode=>166, :st_rdev=>3210, :st_atime=>647, :st_nlink=>206, :st_size=>449, :st_mtime=>727, :st_dev=>010, :st_uid=>246, :st_blksize=>525, :st_ctime=>807>
#<LookupTable :st_ino=>8810, :st_gid=>286, :st_blocks=>569, :st_mode=>, :st_rdev=>3210, :st_atime=>647, :st_nlink=>206, :st_size=>449, :st_mtime=>727, :st_dev=>010, :st_uid=>246, :st_blksize=>525, :st_ctime=>807>
An exception has occurred:
    Unknown field st_mode (RuntimeError)

Backtrace:
    FFI::Struct(File::Stat::Struct)#[] at kernel/platform/ffi.rb:626
                      File::Stat#file? at kernel/common/file.rb:1047
                            File.file? at kernel/common/file.rb:266
                   Compile.single_load at kernel/common/compile.rb:181
               Compile.unified_load {} at kernel/common/compile.rb:145
                            Array#each at kernel/common/array.rb:527
                  Compile.unified_load at kernel/common/compile.rb:110
                Kernel(Module)#require at kernel/common/compile.rb:448
                      Compile.compiler at kernel/common/compile.rb:36
                Compile.compile_string at kernel/common/compile.rb:55
                   Kernel(Module)#eval at kernel/common/eval.rb:50
                       Compile.execute at kernel/common/compile.rb:59
                     Object#__script__ at kernel/loader.rb:279
rubinius 0.10.0 (ruby 1.8.6 compatible) (8f3083694) (12/31/2009) [i686-pc-linux-gnu]
#<LookupTable :st_ino=>8810, :st_gid=>286, :st_blocks=>569, :st_mode=>166, :st_rdev=>3210, :st_atime=>647, :st_nlink=>206, :st_size=>449, :st_mtime=>727, :st_dev=>010, :st_uid=>246, :st_blksize=>525, :st_ctime=>807>
#<LookupTable :st_ino=>8810, :st_gid=>286, :st_blocks=>569, :st_mode=>, :st_rdev=>3210, :st_atime=>647, :st_nlink=>206, :st_size=>449, :st_mtime=>727, :st_dev=>010, :st_uid=>246, :st_blksize=>525, :st_ctime=>807>
An exception has occurred:
    Unknown field st_mode (RuntimeError)

Backtrace:
    FFI::Struct(File::Stat::Struct)#[] at kernel/platform/ffi.rb:626
                      File::Stat#file? at kernel/common/file.rb:1047
                            File.file? at kernel/common/file.rb:266
                   Compile.single_load at kernel/common/compile.rb:191
           Compile.load_from_extension at kernel/common/compile.rb:319
                     Object#__script__ at kernel/loader.rb:279
rake aborted!
Command failed with status (1): [bin/mspec ci -t rubinius...]

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