muparser/all: WARN: Build folder is dirty, removing it: /Users/jenkins/w/cci_PR-4228@3/.conan/data/muparser/all/_/_/build/180c83b442b8b30fb19151eca5509796e51d441b
ERROR: muparser/all: Error in source() method, line 48
	tools.get(**self.conan_data["sources"][self.version])
	KeyError: 'sources'