ERROR: Build failed: exit status 1

Build fail with the following log

gitlab-ci-multi-runner 1.1.4 (9e2fd1a)
Using Shell executor...
Running on Dynamos-MacBook-Air.local...
Fetching changes...
HEAD is now at 8828211 Implemented Store
From https://gitlab.com/goDynamo/VeriKit
   8828211..f2f17ec  master     -> origin/master
Checking out f2f17ece as master...
Previous HEAD position was 8828211... Implemented Store
HEAD is now at f2f17ec... removed env variable
$ xcodebuild clean -workspace VeriKit.xcworkspace -scheme VeriKit | xcpretty
> Cleaning Pods/RxSwift [Debug]
> Check Dependencies
> Cleaning Pods/RxCocoa [Debug]
> Check Dependencies
> Cleaning Pods/Pods-VeriKit [Debug]
> Check Dependencies
> Cleaning VeriKit/VeriKit [Debug]
> Check Dependencies
> Clean Succeeded
$ xcodebuild test -workspace VeriKit.xcworkspace -scheme VeriKit -destination 'platform=iOS Simulator,name=iPhone 6s,OS=9.3' | xcpretty -s
2016-05-24 15:26:23.007 xcodebuild[9584:1419689] [MT] IDETestOperationsObserverDebug: (9B9A7FDD-DA4C-40A7-88EE-B28B9F90C2F5) Beginning test session 9B9A7FDD-DA4C-40A7-88EE-B28B9F90C2F5 with Xcode 7D1014 on target <DVTiPhoneSimulator: 0x7fea2b64b400> {
		SimDevice: SimDevice : iPhone 6s (19F4B029-0720-4197-B1C2-34CC894E3FFA) : state={ Booted } deviceType={ SimDeviceType : com.apple.CoreSimulator.SimDeviceType.iPhone-6s } runtime={ SimRuntime : 9.3 (13E230) - com.apple.CoreSimulator.SimRuntime.iOS-9-3 }
} (9.3 (13E230))
2016-05-24 15:26:23.008 xcodebuild[9584:1419709]  IDETestOperationsObserverDebug: Writing diagnostic log for test session to:
/Users/karlrivest/Library/Developer/Xcode/DerivedData/VeriKit-dedzjikxlpnulhbgiofpzrrqpmbi/Logs/Test/717E724D-4E49-4009-B315-147F85C2801E/Session-2016-05-24_15:26:23-z9dpyz.log
> Building Pods/RxSwift [Debug]
> Check Dependencies
> Building Pods/RxTests [Debug]
> Check Dependencies
> Building Pods/RxCocoa [Debug]
> Check Dependencies
> Building Pods/RxBlocking [Debug]
> Check Dependencies
> Building Pods/Pods-VeriKitTests [Debug]
> Check Dependencies
> Building Pods/Pods-VeriKit [Debug]
> Check Dependencies
> Building VeriKit/VeriKit [Debug]
> Check Dependencies
/Library/Ruby/Gems/2.0.0/gems/xcpretty-0.2.2/lib/xcpretty/parser.rb:383:in `===': invalid byte sequence in US-ASCII (ArgumentError)
	from /Library/Ruby/Gems/2.0.0/gems/xcpretty-0.2.2/lib/xcpretty/parser.rb:383:in `update_test_state'
	from /Library/Ruby/Gems/2.0.0/gems/xcpretty-0.2.2/lib/xcpretty/parser.rb:270:in `parse'
	from /Library/Ruby/Gems/2.0.0/gems/xcpretty-0.2.2/lib/xcpretty/formatters/formatter.rb:83:in `pretty_format'
	from /Library/Ruby/Gems/2.0.0/gems/xcpretty-0.2.2/lib/xcpretty/printer.rb:15:in `pretty_print'
	from /Library/Ruby/Gems/2.0.0/gems/xcpretty-0.2.2/bin/xcpretty:80:in `block in <top (required)>'
	from /Library/Ruby/Gems/2.0.0/gems/xcpretty-0.2.2/bin/xcpretty:79:in `each_line'
	from /Library/Ruby/Gems/2.0.0/gems/xcpretty-0.2.2/bin/xcpretty:79:in `<top (required)>'
	from /usr/local/bin/xcpretty:23:in `load'
	from /usr/local/bin/xcpretty:23:in `<main>'

ERROR: Build failed: exit status 1