Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
DEBUG util.py:459:  [ 92/568] rust-0:1.86.0-1.fc43.x86_64   100% |  51.2 MiB/s |  27.1 MiB |  00m01s
Possible clue for debugging the issue locally with rpmbuild