Failed to chmod user/Library/Developer/CoreSimulator/Devices NO Such File Or directory

When i try to run my app in iPhone 6 simulator, i am getting following error. I am using Xcode 8.1 can any one please help me to understand this issue

Solution

I had this issue, where it would run it every time I deleted the app from the simulator, but when I tried to run it second time this error would show.

I solved it by resetting the iOS Simulator from the top bar menu.

Xcode 9.0: Hardware → Erase All Content and Settings...

Pre Xcode 9.0: Simulator → Reset Content and Settings...