muparser/all: WARN: Build folder is dirty, removing it: C:\J\w\cci_PR-4228\.conan\data\muparser\all\_\_\build\7bd6f2c3d5c4e48a75805376b58cde753392f711
ERROR: muparser/all: Error in source() method, line 48
	tools.get(**self.conan_data["sources"][self.version])
	KeyError: 'sources'