Blocker because xcode ios builds cannot be run when the NodeLabel plugin is used in the job.
We were able to isolate the issue to the use of the NodeLabel plugin and were baffled that this plugin could have this side effect. We are using a standard xcode build running on a MacPro connected to our jenkins master.
This is what we see in the console:
xcodebuild[6784:2033931] [MT] DVTAssertions: ASSERTION FAILURE in /Library/Caches/com.apple.xbs/Sources/DVTFrameworks/DVTFrameworks-10179/DVTFoundation/MacroExpansion/DVTMacroDefinitionConditionSet.mm:154
15:54:41 Details: stringRep should be a non-empty string, but it's an empty string
15:54:41 Object: <DVTMacroDefinitionConditionSet>
15:54:41 Method: +conditionSetFromStringRepresentation:getBaseMacroName:error:
15:54:41 Thread: <NSThread: 0x7ff783514cd0>
15:54:41 Hints: None
15:54:41 0 -[DVTAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] (in DVTFoundation)
15:54:41 1 _DVTAssertionHandler (in DVTFoundation)
15:54:41 2 _DVTAssertionFailureHandler (in DVTFoundation)