Validation behavior on I/O errors

[marksteele]

During my testing I've found that on some conditions, the validation function returns no errors even if I/O errors occur.

I've got a service streaming the data form S3 and passing it to validate() as an input stream, and I've noticed on multiple occasions that there has been partial reads and I/O errors, but that the validation returned success and swallowed all the exceptions.

This shouldn't be the default behaviour, as it will probably mask errors.

[adamretter]

That definitely sounds like a bug.

Any idea how we could reproduce this easily?