Q:

Command failed due to signal: Abort trap: 6

Since Xcode 7 and Swift 2.0, I get the error above, like in the screenshot shown here:

I have no idea where this is coming from, cleaning and deleting derived data didn't work.
Anyone else experiencing this problem?
Project settings:

Target settings:

A:

Go to project Build settings -> Swift Compiler - code generation -> Optimization Level -> For both Debug & Release select option "Fast,Single-File Optimaiztion[-O]

A:

I have the same problem with all Xcode 6.3 projects, I open in Xcode 7.0. 
I created a new project, copied all my source files and resources and everything worked without this compiler error. 
I thought this has something to do with the project settings.
I turned off the Swift compile Optimization to "none" and the Trap 6 was gone away. Perhaps there are other settings, which also generate trouble, but for me this it was.

