[Bug] - [Uncaught exception: min() arg is an empty sequence in mcn_detect_malicious_metadata_1 check ]

[behnazh-w]

Description

While running Macaron version 0.18.0 or the main branch, I encountered an uncaught exception in the mcn_detect_malicious_metadata_1 check:

ValueError: min() arg is an empty sequence

Steps to Reproduce

macaron --disable-rich-output --verbose analyze -purl pkg:pypi/caominhtien-tools

Expected Behavior

The analysis should gracefully handle any empty sequence cases without crashing.

Actual Behavior

Instead of completing, Macaron throws the following exception:

File "src/macaron/malware_analyzer/pypi_heuristics/metadata/anomalous_version.py", line 162, in analyze
    days = list(range(min(publish_days) - self.day_publish_error, max(publish_days) + self.day_publish_error + 1))
ValueError: min() arg is an empty sequence

Environment Information

• Macaron version: 0.18.0 or the main branch.
• PyPI package analyzed: caominhtien-tools