muparser/all: WARN: Build folder is dirty, removing it: /Users/jenkins/w/cci_PR-4228/.conan/data/muparser/all/_/_/build/d8916f6016f745b1163b85952f5e984556ca5311
ERROR: muparser/all: Error in source() method, line 48
	tools.get(**self.conan_data["sources"][self.version])
	KeyError: 'sources'