You don’t have permission to save the file in the folder “DerivedData”

Question

Recently, when I create a project on Xcode, the build fails and I get this error message:

Couldn't create workspace arena folder '/.../Xcode/DerivedData/program': You don’t have permission to save the file “program” in the folder “DerivedData”.

How to solve it?

Answer 1

Weird, but it happened to me when the disk got almost full. Try to free up some space. For me it solved it.