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-rw-r--r--src/buildstream/_basecache.py5
1 files changed, 2 insertions, 3 deletions
diff --git a/src/buildstream/_basecache.py b/src/buildstream/_basecache.py
index 56f6d68dc..52b777fb2 100644
--- a/src/buildstream/_basecache.py
+++ b/src/buildstream/_basecache.py
@@ -80,9 +80,8 @@ class BaseCache():
artifacts = config_node.get_sequence(cls.config_node_name, default=[])
except LoadError:
provenance = config_node.get_node(cls.config_node_name).get_provenance()
- raise _yaml.LoadError(_yaml.LoadErrorReason.INVALID_DATA,
- "%s: 'artifacts' must be a single 'url:' mapping, or a list of mappings" %
- (str(provenance)))
+ raise _yaml.LoadError("{}: 'artifacts' must be a single 'url:' mapping, or a list of mappings"
+ .format(provenance), _yaml.LoadErrorReason.INVALID_DATA)
for spec_node in artifacts:
cache_specs.append(cls.spec_class._new_from_config_node(spec_node, basedir))