It appears some files are missing for package generation to succeed. Please take a look at the attached build log.
Maintainer informed via mail
The attachment throws an error: The file you are trying to attach is 1341 kilobytes (KB) in size. Attachments cannot be more than 1000 KB. We recommend that you store your attachment elsewhere and then paste the URL to this file on the attachment creation page in the appropriate text field, which you can access by clicking the "paste text as attachment" link. Alternately, if your attachment is an image, you could convert it to a compressible format like JPG or PNG and try again. Therefore I've put the build log as a gist: https://gist.githubusercontent.com/herrbischoff/e9798da203970c53c59681e581ccf681/raw/96abcc13ea0f6083ce442cc7a19f765a15eb7ea7/pocl-0.14.log
This issue has been addressed with PR 223032 and is work in progress with PR 224584.
*** This bug has been marked as a duplicate of bug 224584 ***