tl-optional/20191111: WARN: Build folder is dirty, removing it: /tmp/c3ipr/pr_1718_2_1_0/.conan/data/tl-optional/20191111/_/_/build/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
tl-optional/20191111: WARN: Trying to remove corrupted source folder
tl-optional/20191111: WARN: This can take a while for big packages
ERROR: tl-optional/20191111: Error in source() method, line 17
	tools.get(**self.conan_data["sources"][self.version])
	KeyError: 'sources'