1246184 - funsize dies with IndexError sometimes

Status: RESOLVED DUPLICATE of bug 1187691

(Release Engineering :: General, defect)

Description

[[e-mail] (:bhearsum)]

Eg: https://tools.taskcluster.net/task-inspector/#RaFQ2ywyTR2tfgHCoULJGA/0
2016-02-04 17:29:31,849 - INFO - Starting new HTTP connection (1): download.cdn.mozilla.net                             
2016-02-04 17:29:32,059 - DEBUG - "GET /pub/firefox/nightly/2016/02/2016-02-04-00-40-09-mozilla-aurora-l10n/firefox-46.0
a2.nl.linux-x86_64.complete.mar HTTP/1.1" 200 60064210                                                                  
2016-02-04 17:30:04,445 - INFO - Verifying the signature...                                                             
2016-02-04 17:30:04,445 - INFO - Checking /tmp/tmpcro53P signature                                                      
2016-02-04 17:30:04,445 - DEBUG - index_offset is 60062239                                                              
Traceback (most recent call last):                                                                                      
  File "/home/worker/bin/funsize-balrog-submitter.py", line 197, in <module>                                            
    main()                                                                                                              
  File "/home/worker/bin/funsize-balrog-submitter.py", line 181, in main                                                
    complete_mar_url, complete_mar_dest, args.signing_cert)                                                             
  File "/home/worker/bin/funsize-balrog-submitter.py", line 56, in verify_copy_to_s3                                    
    verify_signature(dest, signing_cert)                                                                                
  File "/home/worker/bin/funsize-balrog-submitter.py", line 43, in verify_signature                                     
    m = MarFile(mar, signature_versions=[(1, signature)])                                                               
  File "/usr/local/lib/python2.7/dist-packages/mardor/marfile.py", line 101, in __init__                                
    self._read_index()                                                                                                  
  File "/usr/local/lib/python2.7/dist-packages/mardor/marfile.py", line 161, in _read_index                             
    first_offset = self.members[0]._offset                                                                              
IndexError: list index out of range     

Looks like it may come from mar.py? Or incomplete download?

The other bug here is that it's fatal to funsize...it should probably not die completely from it.