This is the current release xCode 7. I create a template ios/watch app, and run and build the simulator. The linking error occurs. It has been happening since the beta.
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Process: Simulator [771]
Path: /Applications/Xcode.app/Contents/Developer/Applications/Simulator.app/Contents/MacOS/Simulator
Identifier: com.apple.iphonesimulator
Version: 9.0 (620)
Build Info: Indigo-620000000000000~150
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Simulator [771]
User ID: 501
Date/Time: 2015-09-29 08:38:47.401 -0700
OS Version: Mac OS X 10.10.5 (14F27)
Report Version: 11
Anonymous UUID: 015164CE-38DB-27C6-9EF3-447DD92F2AB7
Time Awake Since Boot: 51 seconds
Crashed Thread: 0
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Application Specific Information:
dyld: launch, loading dependent libraries
DYLD_INSERT_LIBRARIES=/usr/lib/libignitor2.dylib
Dyld Error Message:
could not load inserted library '/usr/lib/libignitor2.dylib' because no suitable image found. Did find:
/usr/lib/libignitor2.dylib: mmap() error 1 at address=0x106207000, size=0x00001000 segment=__TEXT in Segment::map() mapping /usr/lib/libignitor2.dylib
Binary Images:
0x1061c3000 - 0x1061ebfff com.apple.iphonesimulator (9.0 - 620) <853F524A-8A56-38F2-9099-2A6A478D241D> /Applications/Xcode.app/Contents/Developer/Applications/Simulator.app/Contents/MacOS/Simulator
0x7fff67c6e000 - 0x7fff67ca4887 dyld (353.2.3) <B1B370A5-479F-3533-8AD7-97B687D4F989> /usr/lib/dyld
Model: MacBookPro11,3, BootROM MBP112.0138.B15, 4 processors, Intel Core i7, 2.6 GHz, 16 GB, SMC 2.19f12
Graphics: Intel Iris Pro, Intel Iris Pro, Built-In
Graphics: NVIDIA GeForce GT 750M, NVIDIA GeForce GT 750M, PCIe, 2048 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x02FE, -
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x02FE, -
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x134), Broadcom BCM43xx 1.0 (7.15.166.24.3)
Bluetooth: Version 4.3.6f3 16238, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SM0512F, 500.28 GB
USB Device: Internal Memory Card Reader
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: Apple Internal Keyboard / Trackpad
Thunderbolt Bus: MacBook Pro, Apple Inc., 17.1