Problem(s) with multiple imports

[oxtopus]

Firstly, I'm on a mac.

I have two schemas. One imports and uses the other. When I import both schemas in Python, I get an error related to "Duplicate IDs", and in some cases, it crashes the python interpreter.

Importing individually is fine:

$ python -c 'from nupic.encoders.delta_capnp import DeltaEncoderProto'
$ python -c 'from nupic.encoders.adaptivescalar_capnp import AdaptiveScalarEncoderProto'

Importing them together raises a KjException related to duplicate IDs:

$ python -c 'from nupic.encoders.delta_capnp import DeltaEncoderProto;from nupic.encoders.adaptivescalar_capnp import AdaptiveScalarEncoderProto'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "capnp/lib/capnp.pyx", line 3773, in capnp.lib.capnp._Loader.load_module (capnp/lib/capnp.cpp:71749)
  File "capnp/lib/capnp.pyx", line 3752, in capnp.lib.capnp.load (capnp/lib/capnp.cpp:71239)
  File "capnp/lib/capnp.pyx", line 3126, in capnp.lib.capnp.SchemaParser.load (capnp/lib/capnp.cpp:63334)
capnp.lib.capnp.KjException: /Users/amarshall/nta/nupic/nupic/encoders/adaptivescalar.capnp:0: failed: Duplicate ID @0xf11485b8c813b489.
stack: 0x10287bcdd 0x10287bd81 0x10270cfdb 0x10270dd84 0x1026e0566 0x1026de612 0x1026de237 0x1026de78d 0x1026e3f90 0x1026e4015 0x1026ed992 0x1026e5fef 0x1026e607d 0x1026e6a86 0x102706b35 0x102706a18

Then, if I change the import in delta.capnp to be relative, I get a segfault:

$ python -c 'from nupic.encoders.delta_capnp import DeltaEncoderProto;from nupic.encoders.adaptivescalar_capnp import AdaptiveScalarEncoderProto'
Segmentation fault: 11

For good measure, just to verify that I didn’t duplicate the ID:

$ cat nupic/encoders/delta.capnp nupic/encoders/adaptivescalar.capnp 
@0xdf5bd1fedf76298f;

using import "/nupic/encoders/adaptivescalar.capnp".AdaptiveScalarEncoderProto;

struct DeltaEncoderProto {
  width @0 :UInt32;
  name @1 :Text;
  n @2 :UInt32;
  adaptiveScalarEnc @3 :AdaptiveScalarEncoderProto;
  prevAbsolute @4 :Float32;
  prevDelta @5 :Float32;
  stateLock @6 :Bool;
}
@0xf11485b8c813b489;

using import "/nupic/movingaverage.capnp".MovingAverageProto;

# Next ID: 10
struct AdaptiveScalarEncoderProto {
  w @0 :UInt32;
  minval @1 :Float32;
  maxval @2 :Float32;
  periodic @3 :Bool;
  n @4 :UInt32;
  name @5 :Text;
  verbosity @6 :UInt8;
  clipInput @7 :Bool;
  recordNum @8 :UInt32;
  slidingWindow @9 :MovingAverageProto;
}
$ git grep f11485b8c813b489
nupic/encoders/adaptivescalar.capnp:@0xf11485b8c813b489;

It’s as if there’s a problem importing AdaptiveScalarEncoderProto a second time. Once implicitly in the delta.capnp schema and again explicitly in python.

I ran into a problem because a test I'm working on that imports both schemas was crashing my Python interpreter. For example, when I run https://github.com/numenta/nupic/commit/e8ca7b52060fa6c0e82fa30fb3e08efc4ad39d86:

$ python tests/unit/nupic/encoders/scalarspace_test.py 
Segmentation fault: 11

With the crash reporter generating this message:

Process:               Python [8149]
Path:                  /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
Identifier:            Python
Version:               2.7.6 (2.7.6)
Code Type:             X86-64 (Native)
Parent Process:        bash [8128]
Responsible:           Terminal [400]
User ID:               502

PlugIn Path:             /Users/USER/Library/Python/2.7/lib/python/site-packages/pycapnp-0.5.1-py2.7-macosx-10.10-intel.egg/capnp/lib/capnp.so
PlugIn Identifier:       capnp.so
PlugIn Version:          ??? (0)

Date/Time:             2015-04-04 16:26:24.594 -0700
OS Version:            Mac OS X 10.10.2 (14C1514)
Report Version:        11
Anonymous UUID:        FF9C3939-A0B7-61F2-1A9B-6FCF211E857D

Sleep/Wake UUID:       FB51CEAD-3252-471E-A7E1-1347A8DD9267

Time Awake Since Boot: 520000 seconds
Time Since Wake:       1500 seconds

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       EXC_I386_GPFLT

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   capnp.so                        0x0000000107a761a2 char* kj::_::fill<kj::ArrayPtr<char const>, kj::FixedArray<char, 1ul>, kj::ArrayPtr<char const> >(char*, kj::ArrayPtr<char const> const&, kj::FixedArray<char, 1ul>&&, kj::ArrayPtr<char const>&&) + 82
1   capnp.so                        0x0000000107a760db kj::String kj::_::concat<kj::ArrayPtr<char const>, kj::FixedArray<char, 1ul>, kj::ArrayPtr<char const> >(kj::ArrayPtr<char const>&&, kj::FixedArray<char, 1ul>&&, kj::ArrayPtr<char const>&&) + 219
2   capnp.so                        0x0000000107a75feb kj::String kj::str<kj::StringPtr&, char, kj::StringPtr&>(kj::StringPtr&&&, char&&, kj::StringPtr&&&) + 139
3   capnp.so                        0x0000000107a70b13 capnp::(anonymous namespace)::joinPath(kj::StringPtr, kj::StringPtr) + 211
4   capnp.so                        0x0000000107a74e0c capnp::SchemaFile::DiskSchemaFile::import(kj::StringPtr) const + 284
5   capnp.so                        0x0000000107a7687b capnp::SchemaParser::ModuleImpl::importRelative(kj::StringPtr) + 123
6   capnp.so                        0x0000000107a4c221 capnp::compiler::Compiler::CompiledModule::importRelative(kj::StringPtr) + 113
7   capnp.so                        0x0000000107a4c0e4 capnp::compiler::Compiler::Node::resolveImport(kj::StringPtr) + 84
8   capnp.so                        0x0000000107a11273 capnp::compiler::NodeTranslator::BrandScope::compileDeclExpression(capnp::compiler::Expression::Reader, capnp::compiler::NodeTranslator::Resolver&, capnp::compiler::NodeTranslator::ImplicitParams) + 2883
9   capnp.so                        0x0000000107a1203c capnp::compiler::NodeTranslator::BrandScope::compileDeclExpression(capnp::compiler::Expression::Reader, capnp::compiler::NodeTranslator::Resolver&, capnp::compiler::NodeTranslator::ImplicitParams) + 6412
10  capnp.so                        0x0000000107a1b18f capnp::compiler::NodeTranslator::compileDecl(unsigned long long, unsigned int, capnp::compiler::NodeTranslator::Resolver&, capnp::compiler::ErrorReporter&, capnp::compiler::Expression::Reader, capnp::schema::Brand::Builder) + 415
11  capnp.so                        0x0000000107a463ee capnp::compiler::Compiler::Alias::compile() + 606
12  capnp.so                        0x0000000107a4b5a2 capnp::compiler::Compiler::Node::resolveMember(kj::StringPtr) + 1746
13  capnp.so                        0x0000000107a4a712 capnp::compiler::Compiler::Node::resolve(kj::StringPtr) + 162
14  capnp.so                        0x0000000107a4aa74 capnp::compiler::Compiler::Node::resolve(kj::StringPtr) + 1028
15  capnp.so                        0x0000000107a10b5a capnp::compiler::NodeTranslator::BrandScope::compileDeclExpression(capnp::compiler::Expression::Reader, capnp::compiler::NodeTranslator::Resolver&, capnp::compiler::NodeTranslator::ImplicitParams) + 1066
16  capnp.so                        0x0000000107a18e04 capnp::compiler::NodeTranslator::compileDeclExpression(capnp::compiler::Expression::Reader, capnp::compiler::NodeTranslator::ImplicitParams) + 308
17  capnp.so                        0x0000000107a18832 capnp::compiler::NodeTranslator::compileType(capnp::compiler::Expression::Reader, capnp::schema::Type::Builder, capnp::compiler::NodeTranslator::ImplicitParams) + 338
18  capnp.so                        0x0000000107a30128 capnp::compiler::NodeTranslator::StructTranslator::translateInternal(capnp::compiler::NodeTranslator::StructTranslator::MemberInfo&, capnp::schema::Node::Builder) + 1464
19  capnp.so                        0x0000000107a29f51 capnp::compiler::NodeTranslator::StructTranslator::translate(capnp::Void, capnp::List<capnp::compiler::Declaration, (capnp::Kind)3>::Reader, capnp::schema::Node::Builder) + 321
20  capnp.so                        0x0000000107a15dff capnp::compiler::NodeTranslator::compileStruct(capnp::Void, capnp::List<capnp::compiler::Declaration, (capnp::Kind)3>::Reader, capnp::schema::Node::Builder) + 303
21  capnp.so                        0x0000000107a12e2b capnp::compiler::NodeTranslator::compileNode(capnp::compiler::Declaration::Reader, capnp::schema::Node::Builder) + 1371
22  capnp.so                        0x0000000107a127e6 capnp::compiler::NodeTranslator::NodeTranslator(capnp::compiler::NodeTranslator::Resolver&, capnp::compiler::ErrorReporter&, capnp::compiler::Declaration::Reader const&, capnp::Orphan<capnp::schema::Node>, bool) + 582
23  capnp.so                        0x0000000107a1312e capnp::compiler::NodeTranslator::NodeTranslator(capnp::compiler::NodeTranslator::Resolver&, capnp::compiler::ErrorReporter&, capnp::compiler::Declaration::Reader const&, capnp::Orphan<capnp::schema::Node>, bool) + 62
24  capnp.so                        0x0000000107a6513b void kj::ctor<capnp::compiler::NodeTranslator, capnp::compiler::Compiler::Node&, capnp::compiler::ErrorReporter&, capnp::compiler::Declaration::Reader&, capnp::Orphan<capnp::schema::Node>, bool>(capnp::compiler::NodeTranslator&, capnp::compiler::Compiler::Node&&&, capnp::compiler::ErrorReporter&&&, capnp::compiler::Declaration::Reader&&&, capnp::Orphan<capnp::schema::Node>&&, bool&&) + 251
25  capnp.so                        0x0000000107a52097 capnp::compiler::NodeTranslator& kj::Arena::allocate<capnp::compiler::NodeTranslator, capnp::compiler::Compiler::Node&, capnp::compiler::ErrorReporter&, capnp::compiler::Declaration::Reader&, capnp::Orphan<capnp::schema::Node>, bool>(capnp::compiler::Compiler::Node&&&, capnp::compiler::ErrorReporter&&&, capnp::compiler::Declaration::Reader&&&, capnp::Orphan<capnp::schema::Node>&&, bool&&) + 183
26  capnp.so                        0x0000000107a486db capnp::compiler::Compiler::Node::getContent(capnp::compiler::Compiler::Node::Content::State) + 4315
27  capnp.so                        0x0000000107a493d9 capnp::compiler::Compiler::Node::traverse(unsigned int, std::__1::unordered_map<capnp::compiler::Compiler::Node*, unsigned int, std::__1::hash<capnp::compiler::Compiler::Node*>, std::__1::equal_to<capnp::compiler::Compiler::Node*>, std::__1::allocator<std::__1::pair<capnp::compiler::Compiler::Node* const, unsigned int> > >&, capnp::SchemaLoader const&) + 121
28  capnp.so                        0x0000000107a4971b capnp::compiler::Compiler::Node::traverse(unsigned int, std::__1::unordered_map<capnp::compiler::Compiler::Node*, unsigned int, std::__1::hash<capnp::compiler::Compiler::Node*>, std::__1::equal_to<capnp::compiler::Compiler::Node*>, std::__1::allocator<std::__1::pair<capnp::compiler::Compiler::Node* const, unsigned int> > >&, capnp::SchemaLoader const&) + 955
29  capnp.so                        0x0000000107a4edc0 capnp::compiler::Compiler::Impl::eagerlyCompile(unsigned long long, unsigned int, capnp::SchemaLoader const&) + 672
30  capnp.so                        0x0000000107a4f3ae capnp::compiler::Compiler::eagerlyCompile(unsigned long long, unsigned int) const + 126
31  capnp.so                        0x0000000107a6f262 capnp::SchemaParser::parseFile(kj::Own<capnp::SchemaFile>&&) const + 226
32  capnp.so                        0x0000000107a6f0f8 capnp::SchemaParser::parseDiskFile(kj::StringPtr, kj::StringPtr, kj::ArrayPtr<kj::StringPtr const>) const + 168
33  capnp.so                        0x000000010791947c __pyx_f_5capnp_3lib_5capnp_12SchemaParser__parse_disk_file(__pyx_obj_5capnp_3lib_5capnp_SchemaParser*, _object*, _object*, _object*, int) + 1446
34  capnp.so                        0x000000010793ffca __pyx_pw_5capnp_3lib_5capnp_12SchemaParser_7load(_object*, _object*, _object*) + 2086
35  capnp.so                        0x000000010792ab3d __pyx_pw_5capnp_3lib_5capnp_27load(_object*, _object*, _object*) + 701
36  capnp.so                        0x0000000107929848 __pyx_pw_5capnp_3lib_5capnp_7_Loader_3load_module(_object*, _object*, _object*) + 1776
37  org.python.python               0x00000001074e12ac PyObject_Call + 99
38  org.python.python               0x00000001074ec0cf 0x1074d7000 + 86223
39  org.python.python               0x00000001074e12ac PyObject_Call + 99
40  org.python.python               0x00000001074e143d 0x1074d7000 + 42045
41  org.python.python               0x00000001074e164f PyObject_CallMethod + 253
42  org.python.python               0x0000000107572ed7 0x1074d7000 + 638679
43  org.python.python               0x0000000107572aa1 0x1074d7000 + 637601
44  org.python.python               0x0000000107570ce1 PyImport_ImportModuleLevel + 1191
45  org.python.python               0x00000001075563be 0x1074d7000 + 521150
46  org.python.python               0x00000001074e12ac PyObject_Call + 99
47  org.python.python               0x0000000107560d6b PyEval_CallObjectWithKeywords + 93
48  org.python.python               0x000000010755d071 PyEval_EvalFrameEx + 8411
49  org.python.python               0x000000010755ad62 PyEval_EvalCodeEx + 1413
50  org.python.python               0x000000010755a7d7 PyEval_EvalCode + 54
51  org.python.python               0x000000010757a7bd 0x1074d7000 + 669629
52  org.python.python               0x000000010757a860 PyRun_FileExFlags + 133
53  org.python.python               0x000000010757a3fd PyRun_SimpleFileExFlags + 769
54  org.python.python               0x000000010758bb23 Py_Main + 3051
55  libdyld.dylib                   0x00007fff83ec35c9 start + 1

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0xe3aa4f5dbdbea870  rbx: 0x000000010923c090  rcx: 0xe3aa4f5dbdbea871  rdx: 0x00007fff58726d20
  rdi: 0x00007fff58726d28  rsi: 0x00007fff58726d28  rbp: 0x00007fff58726c40  rsp: 0x00007fff58726c00
   r8: 0x0000000000000001   r9: 0x0000000000000001  r10: 0x0000000000000000  r11: 0x0000000000000246
  r12: 0x0000000109235b4c  r13: 0x000000010923c090  r14: 0x00007f9248d701c0  r15: 0x0000000000000024
  rip: 0x0000000107a761a2  rfl: 0x0000000000010286  cr2: 0x0000000210b3f829

Logical CPU:     6
Error Code:      0x00000000
Trap Number:     13

Binary Images:
       0x1074d0000 -        0x1074d0fff  org.python.python (2.7.6 - 2.7.6) <A7B51404-B996-3FDF-A40F-0CCE1837F1F4> /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
       0x1074d7000 -        0x1075c8ff7  org.python.python (2.7.6 - 2.7.6) <A5C1B694-31A0-3966-B6BC-C40694DC707F> /System/Library/Frameworks/Python.framework/Versions/2.7/Python
       0x1077cf000 -        0x1077d1fff  _collections.so (89) <4B0EB2CA-18E0-3F3A-B04B-94246814AF0F> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_collections.so
       0x1077d7000 -        0x1077dafff  operator.so (89) <049C4902-93FF-3453-BFEA-99F6461E63C1> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/operator.so
       0x1077e0000 -        0x1077e4fff  itertools.so (89) <76FA3C45-95A0-3627-A5D9-F6E43D7FE09A> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/itertools.so
       0x1077ed000 -        0x1077eefff  _heapq.so (89) <DC500847-4C9E-3782-9F26-388082125F57> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_heapq.so
       0x107833000 -        0x107834fff  _functools.so (89) <687C0F91-739D-3658-A815-C1CA87A0F4D3> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_functools.so
       0x107838000 -        0x107839fff  cStringIO.so (89) <A2B6CB97-BCA1-3D64-BFC0-F5F9ED139A2C> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/cStringIO.so
       0x10783e000 -        0x10783ffff  time.so (89) <42DAC34B-013C-36E7-89A4-AE26FFBFD90E> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/time.so
       0x107885000 -        0x107888ff7  math.so (89) <9B5C733C-9EEA-364B-B83E-E0D130F74CEA> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/math.so
       0x1078ce000 -        0x107c74ff7 +capnp.so (0) <3F1DBD25-FB6E-3827-8E84-253B0890078A> /Users/USER/Library/Python/2.7/lib/python/site-packages/pycapnp-0.5.1-py2.7-macosx-10.10-intel.egg/capnp/lib/capnp.so
       0x1080b4000 -        0x1080b7fff  strop.so (89) <EF7B9ADA-CB8F-350F-87CB-413F1E8398D7> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/strop.so
       0x1081bc000 -        0x1081c3ff7  _socket.so (89) <F7E0FFD6-78FC-3F79-A0D2-8AF7266FEB93> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_socket.so
       0x1081cd000 -        0x1081d0fff  _ssl.so (89) <67507A0A-090E-3201-86BE-BE72B4CDFB47> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_ssl.so
       0x1081d6000 -        0x10820cff7  libssl.0.9.8.dylib (52.10.1) <4A2D6ECA-A07E-38B5-98D4-315A4A1E8CE6> /usr/lib/libssl.0.9.8.dylib
       0x108262000 -        0x108264fff  binascii.so (89) <CB8E5D83-F54B-3570-8667-06B951C38DB0> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/binascii.so
       0x108268000 -        0x108269fff  _hashlib.so (89) <706C58CB-4213-3845-B316-69D937257673> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_hashlib.so
       0x10826d000 -        0x10826eff7  _random.so (89) <0A7C79BC-D77F-3049-82B9-4ADF13CF1825> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_random.so
       0x108272000 -        0x1083b2fff +multiarray.so (???) <20692378-6291-39E7-AE94-C7F6776EFDA9> /Users/USER/Library/Python/2.7/lib/python/site-packages/numpy/core/multiarray.so
       0x10846b000 -        0x108474fff  datetime.so (89) <17581299-8DE2-3A9E-80A4-CF0F0A79CE13> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/datetime.so
       0x10847d000 -        0x1084e1fff +umath.so (???) <FB05415F-AE90-38B1-B7C0-2BDAEA3F4F0C> /Users/USER/Library/Python/2.7/lib/python/site-packages/numpy/core/umath.so
       0x10854d000 -        0x108558fff  cPickle.so (89) <69D3AA38-D029-302C-8E8F-C8F2016C554B> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/cPickle.so
       0x10855e000 -        0x108562ff7 +_dotblas.so (???) <F642F435-FA32-3AD0-933C-93E16CECF009> /Users/USER/Library/Python/2.7/lib/python/site-packages/numpy/core/_dotblas.so
       0x1085a6000 -        0x1085c7ff7 +scalarmath.so (???) <8589BCB6-86A8-32B7-941C-EE32E359E818> /Users/USER/Library/Python/2.7/lib/python/site-packages/numpy/core/scalarmath.so
       0x1085d9000 -        0x1085d9fff  grp.so (89) <DF55B2CB-E86C-3384-AB53-E183CE4B62A6> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/grp.so
       0x1085dd000 -        0x1085ecfff  _io.so (89) <6FFCBD14-A18A-3F75-B926-CAFC02F58490> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_io.so
       0x1085fb000 -        0x1085fcfff  fcntl.so (89) <794692D1-C684-376C-AA4B-C1DBBD7C7A09> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/fcntl.so
       0x108640000 -        0x108644fff +_compiled_base.so (???) <1C06B261-6E47-3F4E-81FF-F2C7052C90B3> /Users/USER/Library/Python/2.7/lib/python/site-packages/numpy/lib/_compiled_base.so
       0x108688000 -        0x108689fff +lapack_lite.so (???) <3F7FCFD2-43DC-3942-BE56-263A4C2B9865> /Users/USER/Library/Python/2.7/lib/python/site-packages/numpy/linalg/lapack_lite.so
       0x10868d000 -        0x1086a0fff +_umath_linalg.so (???) <3E71B5C5-776B-3B14-9065-562449F22D6C> /Users/USER/Library/Python/2.7/lib/python/site-packages/numpy/linalg/_umath_linalg.so
       0x1086ac000 -        0x1086acfff  future_builtins.so (89) <6F6B59EB-EBE9-30B6-9F03-9A1FC527D47C> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/future_builtins.so
       0x1086b0000 -        0x1086b8fff +fftpack_lite.so (???) <80BF4739-CD32-3A75-9F6B-8E5122079FE5> /Users/USER/Library/Python/2.7/lib/python/site-packages/numpy/fft/fftpack_lite.so
       0x1086fc000 -        0x108753fff +mtrand.so (???) <1FF1E4EB-BBCE-351D-B724-297F0E82E5A7> /Users/USER/Library/Python/2.7/lib/python/site-packages/numpy/random/mtrand.so
       0x1087e8000 -        0x1087f6fff  _ctypes.so (89) <8BF6FB14-BF96-3CB3-BD44-39A5F402FF97> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_ctypes.so
       0x108801000 -        0x108804fff  _struct.so (89) <015BD869-7103-3735-A10A-70E4C15C9AB8> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_struct.so
       0x108943000 -        0x108e3dff7 +_math.so (0) <AC1CA188-2118-3DCF-9B42-2657543F9EC8> /Users/USER/*/_math.so
       0x109210000 -        0x109214fff  array.so (89) <80A6114A-394E-3817-BB38-677B513536CE> /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/array.so
       0x10925a000 -        0x109296ff7 +_proj.so (0) <F8DA2D50-CC1B-397F-8A0C-037AE7AA7496> /Users/USER/Library/Python/2.7/site-packages/pyproj/_proj.so
    0x7fff62b03000 -     0x7fff62b39837  dyld (353.2.1) <65DCCB06-339C-3E25-9702-600A28291D0E> /usr/lib/dyld
    0x7fff80671000 -     0x7fff80671ff7  libkeymgr.dylib (28) <77845842-DE70-3CC5-BD01-C3D14227CED5> /usr/lib/system/libkeymgr.dylib
    0x7fff80672000 -     0x7fff8067affb  libcopyfile.dylib (118.1.2) <0C68D3A6-ACDD-3EF3-991A-CC82C32AB836> /usr/lib/system/libcopyfile.dylib
    0x7fff8072a000 -     0x7fff80752fff  libsystem_info.dylib (459) <B85A85D5-8530-3A93-B0C3-4DEC41F79478> /usr/lib/system/libsystem_info.dylib
    0x7fff809ba000 -     0x7fff80a0efff  libc++.1.dylib (120) <1B9530FD-989B-3174-BB1C-BDC159501710> /usr/lib/libc++.1.dylib
    0x7fff80e5f000 -     0x7fff80ea5ff7  libauto.dylib (186) <A260789B-D4D8-316A-9490-254767B8A5F1> /usr/lib/libauto.dylib
    0x7fff80ea6000 -     0x7fff80ebcff7  libsystem_asl.dylib (267) <F153AC5B-0542-356E-88C8-20A62CA704E2> /usr/lib/system/libsystem_asl.dylib
    0x7fff80f58000 -     0x7fff80fe4ff7  libsystem_c.dylib (1044.10.1) <199ED5EB-77A1-3D43-AA51-81779CE0A742> /usr/lib/system/libsystem_c.dylib
    0x7fff810c3000 -     0x7fff810c4ffb  libremovefile.dylib (35) <3485B5F4-6CE8-3C62-8DFD-8736ED6E8531> /usr/lib/system/libremovefile.dylib
    0x7fff815ba000 -     0x7fff815e2fff  libxpc.dylib (559.10.3) <876216DC-D5D3-381E-8AF9-49AE464E5107> /usr/lib/system/libxpc.dylib
    0x7fff838f3000 -     0x7fff839a2fe7  libvMisc.dylib (516) <A82F9FE8-70ED-3BC9-9184-1A2B9EE3C010> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvMisc.dylib
    0x7fff83a7d000 -     0x7fff83a7fff7  libsystem_sandbox.dylib (358.1.1) <95312E09-DA28-324A-A084-F3E574D0210E> /usr/lib/system/libsystem_sandbox.dylib
    0x7fff83a8b000 -     0x7fff83a8bff7  libunc.dylib (29) <5676F7EA-C1DF-329F-B006-D2C3022B7D70> /usr/lib/system/libunc.dylib
    0x7fff83a98000 -     0x7fff83ac2ff7  libdispatch.dylib (442.1.4) <502CF32B-669B-3709-8862-08188225E4F0> /usr/lib/system/libdispatch.dylib
    0x7fff83ac3000 -     0x7fff83ac3fff  com.apple.Accelerate (1.10 - Accelerate 1.10) <2C8AF258-4F11-3BEC-A826-22D7199B3975> /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
    0x7fff83ec0000 -     0x7fff83ec3ff7  libdyld.dylib (353.2.1) <4E33E416-F1D8-3598-B8CC-6863E2ECD0E6> /usr/lib/system/libdyld.dylib
    0x7fff83ec4000 -     0x7fff83ec4ff7  liblaunch.dylib (559.10.3) <DFCDEBDF-8247-3DC7-9879-E7E497DDA4B4> /usr/lib/system/liblaunch.dylib
    0x7fff847f2000 -     0x7fff8480eff7  libsystem_malloc.dylib (53.1.1) <19BCC257-5717-3502-A71F-95D65AFA861B> /usr/lib/system/libsystem_malloc.dylib
    0x7fff84828000 -     0x7fff8493aff7  libvDSP.dylib (516) <151B3CCB-77D3-3715-A3D0-7C74CD5C7FFC> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib
    0x7fff8493b000 -     0x7fff84ac9fff  libBLAS.dylib (1128) <497912C1-A98E-3281-BED7-E9C751552F61> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
    0x7fff8517c000 -     0x7fff8518dff3  libsystem_coretls.dylib (35.10.1) <3EAED90A-7AA0-323C-A52B-E16477981D59> /usr/lib/system/libsystem_coretls.dylib
    0x7fff8537c000 -     0x7fff853f2fe7  libcorecrypto.dylib (233.1.2) <E1789801-3985-3949-B736-6B3378873301> /usr/lib/system/libcorecrypto.dylib
    0x7fff854ff000 -     0x7fff85506ff7  libcompiler_rt.dylib (35) <BF8FC133-EE10-3DA6-9B90-92039E28678F> /usr/lib/system/libcompiler_rt.dylib
    0x7fff86cbe000 -     0x7fff86cc4fff  libsystem_trace.dylib (72.1.3) <A9E6B7D8-C327-3742-AC54-86C94218B1DF> /usr/lib/system/libsystem_trace.dylib
    0x7fff86cef000 -     0x7fff86cf0ff7  libsystem_blocks.dylib (65) <9615D10A-FCA7-3BE4-AA1A-1B195DACE1A1> /usr/lib/system/libsystem_blocks.dylib
    0x7fff877b5000 -     0x7fff877c0fff  libcommonCrypto.dylib (60061) <D381EBC6-69D8-31D3-8084-5A80A32CB748> /usr/lib/system/libcommonCrypto.dylib
    0x7fff877c1000 -     0x7fff877c6ff7  libmacho.dylib (862) <126CA2ED-DE91-308F-8881-B9DAEC3C63B6> /usr/lib/system/libmacho.dylib
    0x7fff877c7000 -     0x7fff877e4fff  libsystem_kernel.dylib (2782.10.72) <97CD7ACD-EA0C-3434-BEFC-FCD013D6BB73> /usr/lib/system/libsystem_kernel.dylib
    0x7fff87c6d000 -     0x7fff87e6746f  libobjc.A.dylib (647) <759E155D-BC42-3D4E-869B-6F57D477177C> /usr/lib/libobjc.A.dylib
    0x7fff88239000 -     0x7fff8823afff  libDiagnosticMessagesClient.dylib (100) <2EE8E436-5CDC-34C5-9959-5BA218D507FB> /usr/lib/libDiagnosticMessagesClient.dylib
    0x7fff8823c000 -     0x7fff8823cfff  com.apple.Accelerate.vecLib (3.10 - vecLib 3.10) <9D749502-A228-3BF1-B52F-A182DEEB2C4D> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/vecLib
    0x7fff88594000 -     0x7fff8859cfff  libsystem_dnssd.dylib (561.1.1) <62B70ECA-E40D-3C63-896E-7F00EC386DDB> /usr/lib/system/libsystem_dnssd.dylib
    0x7fff885b6000 -     0x7fff885b8ff7  libsystem_coreservices.dylib (9) <41B7C578-5A53-31C8-A96F-C73E030B0938> /usr/lib/system/libsystem_coreservices.dylib
    0x7fff88716000 -     0x7fff887fafff  libcrypto.0.9.8.dylib (52.10.1) <2A2924DE-63FB-37F6-B102-84D69240675B> /usr/lib/libcrypto.0.9.8.dylib
    0x7fff88803000 -     0x7fff88814ff7  libz.1.dylib (55) <88C7C7DE-04B8-316F-8B74-ACD9F3DE1AA1> /usr/lib/libz.1.dylib
    0x7fff8899c000 -     0x7fff88d32fff  com.apple.CoreFoundation (6.9 - 1152) <CBD1591C-405E-376E-87E9-B264610EBF49> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
    0x7fff88d98000 -     0x7fff890b3fcf  com.apple.vImage (8.0 - 8.0) <1183FE6A-FDB6-3B3B-928D-50C7909F2308> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage
    0x7fff89801000 -     0x7fff89806ff7  libsystem_stats.dylib (163.10.18) <9B8CCF24-DDDB-399A-9237-4BEC225D2E8C> /usr/lib/system/libsystem_stats.dylib
    0x7fff8a7da000 -     0x7fff8a9bfff3  libicucore.A.dylib (531.31) <B08E00D5-13C6-3391-AB3A-8DE693D3B42E> /usr/lib/libicucore.A.dylib
    0x7fff8a9e5000 -     0x7fff8a9e9fff  libcache.dylib (69) <45E9A2E7-99C4-36B2-BEE3-0C4E11614AD1> /usr/lib/system/libcache.dylib
    0x7fff8b4c1000 -     0x7fff8b4cafff  libsystem_pthread.dylib (105.10.1) <3103AA7F-3BAE-3673-9649-47FFD7E15C97> /usr/lib/system/libsystem_pthread.dylib
    0x7fff8c3e4000 -     0x7fff8c7f1ff7  libLAPACK.dylib (1128) <F9201AE7-B031-36DB-BCF8-971E994EF7C1> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib
    0x7fff8c7f2000 -     0x7fff8c81dfff  libc++abi.dylib (125) <88A22A0F-87C6-3002-BFBA-AC0F2808B8B9> /usr/lib/libc++abi.dylib
    0x7fff8c81e000 -     0x7fff8c81ffff  libsystem_secinit.dylib (18) <581DAD0F-6B63-3A48-B63B-917AF799ABAA> /usr/lib/system/libsystem_secinit.dylib
    0x7fff8c92a000 -     0x7fff8c92fff7  libunwind.dylib (35.3) <BE7E51A0-B6EA-3A54-9CCA-9D88F683A6D6> /usr/lib/system/libunwind.dylib
    0x7fff8cb0a000 -     0x7fff8cb12fff  libsystem_platform.dylib (63) <64E34079-D712-3D66-9CE2-418624A5C040> /usr/lib/system/libsystem_platform.dylib
    0x7fff8cb63000 -     0x7fff8cb9bffb  libsystem_network.dylib (411.1) <2EC3A005-473F-3C36-A665-F88B5BACC7F0> /usr/lib/system/libsystem_network.dylib
    0x7fff8ce49000 -     0x7fff8ce60ff7  libLinearAlgebra.dylib (1128) <E78CCBAA-A999-3B65-8EC9-06DB15E67C37> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLinearAlgebra.dylib
    0x7fff8d75d000 -     0x7fff8d75efff  libSystem.B.dylib (1213) <90B107BC-FF74-32CC-B1CF-4E02F544D957> /usr/lib/libSystem.B.dylib
    0x7fff8e3a4000 -     0x7fff8e3aaff7  libsystem_networkextension.dylib (167.1.10) <29AB225B-D7FB-30ED-9600-65D44B9A9442> /usr/lib/system/libsystem_networkextension.dylib
    0x7fff8e672000 -     0x7fff8e673fff  com.apple.TrustEvaluationAgent (2.0 - 25) <2D61A2C3-C83E-3A3F-8EC1-736DBEC250AB> /System/Library/PrivateFrameworks/TrustEvaluationAgent.framework/Versions/A/TrustEvaluationAgent
    0x7fff8e674000 -     0x7fff8e676ff7  libquarantine.dylib (76) <DC041627-2D92-361C-BABF-A869A5C72293> /usr/lib/system/libquarantine.dylib
    0x7fff8efd6000 -     0x7fff8efdfff7  libsystem_notify.dylib (133.1.1) <61147800-F320-3DAA-850C-BADF33855F29> /usr/lib/system/libsystem_notify.dylib
    0x7fff8f422000 -     0x7fff8f424fff  libsystem_configuration.dylib (699.1.5) <5E14864E-089A-3D84-85A4-980B776427A8> /usr/lib/system/libsystem_configuration.dylib
    0x7fff8f709000 -     0x7fff8f70afff  libffi.dylib (18.1) <0F6C6A4D-1210-3585-8DA1-B8A94B9924A5> /usr/lib/libffi.dylib
    0x7fff8fca8000 -     0x7fff8fcd8fff  libsystem_m.dylib (3086.1) <1E12AB45-6D96-36D0-A226-F24D9FB0D9D6> /usr/lib/system/libsystem_m.dylib

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 314641
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=114.9M resident=84.6M(74%) swapped_out_or_unallocated=30.3M(26%)
Writable regions: Total=4.2G written=11.1M(0%) resident=14.6M(0%) swapped_out=0K(0%) unallocated=4.2G(100%)

REGION TYPE                      VIRTUAL
===========                      =======
Kernel Alloc Once                     4K
MALLOC                            175.3M
MALLOC (admin)                       16K
MALLOC_LARGE (reserved)             4.0G        reserved VM address space (unallocated)
STACK GUARD                        56.0M
Stack                              8192K
VM_ALLOCATE                          16K
__DATA                             2640K
__LINKEDIT                         79.3M
__TEXT                             35.6M
__UNICODE                           544K
shared memory                         4K
===========                      =======
TOTAL                               4.3G
TOTAL, minus reserved VM space    357.4M

[jparyani]

Hmm, I'm having a lot of trouble reproducing (specifically I'm getting a Fatal Python error: PyThreadState_Get: no current thread whenever I try to import nupic on my OSX box). That being said, I'm pretty sure I fixed this bug in the 0.5.4 release (see https://github.com/jparyani/pycapnp/blob/develop/CHANGELOG.md#v054-2015-03-02). Can you try that out and let me know if it works for you?

[oxtopus]

Will do. Thanks!

I tried to craft a simpler scenario, but wasn't able to reproduce. FWIW, if you look at the history of https://github.com/numenta/nupic/pull/2007, the failing Travis builds were related to the same failure (the python interpreter crashed). The crashes stopped and it all started working when I switched to relative imports.

Thanks for trying it out!

[oxtopus]

Upgrading to 0.5.4 did the trick. Thanks!