ftjam/2.5.2: WARN: Build folder is dirty, removing it: /tmp/c3ipr/pr_1998_4_0_0/.conan/data/ftjam/2.5.2/_/_/build/4db1be536558d833e52e862fd84d64d75c2b3656
ftjam/2.5.2: ERROR: Package '4db1be536558d833e52e862fd84d64d75c2b3656' build failed
ftjam/2.5.2: WARN: Build folder /tmp/c3ipr/pr_1998_4_0_0/.conan/data/ftjam/2.5.2/_/_/build/4db1be536558d833e52e862fd84d64d75c2b3656
ERROR: ftjam/2.5.2: Error in build() method, line 58
	if self.settings.compiler.build_type != "Release":
	ConanException: 'settings.compiler.build_type' doesn't exist for 'gcc'
'settings.compiler' possible configurations are ['exception', 'threads', 'version']