ZipKit::FileReader raises MissingEOCD for truncated, corrupted, or
non-zip files. This exception is a direct StandardError subclass, not
a subclass of InvalidStructure or ReadError, so it escaped as an
unhandled job failure instead of being caught and surfaced to the user.
Broaden the rescue in ZipFile::Reader#initialize to catch ReadError
(parent of InvalidStructure), MissingEOCD, and UnsupportedFeature.
The old implementation loaded files into memory to provide an IO interface. This has the obvious downside of loading any file included in the import, e.g. a 10GB video file, into memory. ZipKit has no native IO object for reading but it provides all the necessary methods to implement one.
Stanko K.R.