mac 版本 10.13.1
xcode 9.0 (9A235)
使用official/v1.7.1分支
报错 信息：
[09:45:00] Starting ‘sign-simulator’…
2017-12-06 09:45:51.548 Xcode[7395:1646449] Unknown class GPUTesselationSliderCell in Interface Builder file.
2017-12-06 09:45:51.885 Xcode[7395:1646449] Unknown class GPUTesselationSliderCell in Interface Builder file.
2017-12-06 09:45:52.136 Xcode[7395:1646449] Unknown class GPUTesselationSliderCell in Interface Builder file.
2017-12-06 09:45:54.254 Xcode[7395:1646449] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-13247/IDEKit/NavigableItems/IDENavigableItem.m:1175
Details: No match from <IDEKeyDrivenNavigableItem 0x7f9059d2f350: (supports Any NSObject, represents: <Xcode3EditingGroup: 0x7f9059d2dd80>)> to <Xcode3Target:0x7f9053e5ece0:Simulator iOS>. Iterating the whole tree might have taken a significant amount of time.
Object: <IDEKeyDrivenNavigableItem_Xcode3EditingGroup_Any: 0x7f9059d2f350>
Method: -_descendantItemForRepresentedObject:stopAtClass:
Thread: <NSThread: 0x7f904ed195e0>{number = 1, name = main}
Please file a bug at http://bugreport.apple.com with this warning message and any useful information you can provide.
SourceKitError: Error Domain=SourceKitServiceErrorDomain Code=3 “No associated Editor Document” UserInfo={NSLocalizedDescription=No associated Editor Document}
^Z
[3]+ Stopped gulp sign-simulator
