Doesn't build (OS/X El Capitan)

[bilus]

codebuild -workspace native/ios/NatalTest.xcworkspace -scheme NatalTest -destination platform='iOS Simulator',OS=latest,id='DFAD3D65-1F5C-4380-921A-4EEEB3F3D53E' test

Gives:

[...]
=== BUILD TARGET NatalTestTests OF PROJECT NatalTest WITH CONFIGURATION Debug ===

Check dependencies

Nov 22 22:10:21  NatalTest[43339] <Error>: CGContextSaveGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
Nov 22 22:10:21  NatalTest[43339] <Error>: CGContextTranslateCTM: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
Nov 22 22:10:21  NatalTest[43339] <Error>: CGContextRestoreGState: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.
2015-11-22 22:10:21.752 [error][tid:main][RCTBatchedBridge.m:436] Error while loading: Cannot find entry file index.ios.js in any of the roots: ["/Users/martinb/dev/spikes/natal-test/native"]
Test Suite 'All tests' started at 2015-11-22 22:10:22.041
Test Suite 'NatalTestTests.xctest' started at 2015-11-22 22:10:22.042
Test Suite 'NatalTestTests' started at 2015-11-22 22:10:22.043
Test Case '-[NatalTestTests testRendersWelcomeScreen]' started.
/Users/martinb/dev/spikes/natal-test/native/ios/NatalTestTests/NatalTestTests.m:66: error: -[NatalTestTests testRendersWelcomeScreen] : ((foundElement) is true) failed - Couldn't find element with text 'Welcome to React Native!' in 240 seconds
Test Case '-[NatalTestTests testRendersWelcomeScreen]' failed (240.055 seconds).
Test Suite 'NatalTestTests' failed at 2015-11-22 22:14:22.100.
     Executed 1 test, with 1 failure (0 unexpected) in 240.055 (240.057) seconds
Test Suite 'NatalTestTests.xctest' failed at 2015-11-22 22:14:22.101.
     Executed 1 test, with 1 failure (0 unexpected) in 240.055 (240.058) seconds
Test Suite 'All tests' failed at 2015-11-22 22:14:22.101.
     Executed 1 test, with 1 failure (0 unexpected) in 240.055 (240.060) seconds
** TEST FAILED **

Please let me know what additional information is going to be useful.