The error is:

err: /Stage[main]/Role::Visualeditor/Mediawiki::Extension[VisualEditor]/Browsertests::Bundle[/vagrant/mediawiki/extensions/VisualEditor/modules/ve-mw/test/browser]/Ruby::Bundle[/vagrant/mediawiki/extensions/VisualEditor/modules/ve-mw/test/browser]/Exec[bundle-install-/vagrant/mediawiki/extensions/VisualEditor/modules/ve-mw/test/browser]: Could not evaluate: Could not find command '/usr/local/rbenv/shims/bundle'

---

Full list of roles:

  accountinfo                geshi                      parsoid                 
  analytics                * gettingstarted             pdfhandler              
  antispam                   globalusage                poem                    
  antispoof                * guidedtour                 popups                  
  apisandbox                 gwtoolset                  proofreadpage           
  apparmor                   hadoop                     scribunto               
  babel                      hhvm                       simple_miser            
  betafeatures               hive                       simple_performant       
  browsertests               https                      sitematrix              
  centralauth                jsduck                     templatedata            
  centralnotice              labs_initial_content       textextracts            
  chromium                   mantle                     thumb_on_404            
  cirrussearch               massmessage                timedmediahandler       
  cite                     * math                       translate               
  cldr                       mathsearch                 uls                     
  codeeditor                 mleb                       uploadwizard            
  commonsmetadata          * mobilefrontend             urlshortener            
  confirmedit                multimedia                 vectorbeta              
  doublewiki                 multimediaviewer         * visualeditor            
  echo                       mysql                      wikidiff2               
  education                  navigationtiming         * wikieditor              
* eventlogging               newusermessage             wikihiero               
  flow                       oauth                      wikilove                
  fss                        pagedtiffhandler           wikimania_scholarships  
  fundraising                pageimages               * wikimediaevents         
  gadgets                    pagetriage                 wikimetrics             
  geodata                  * parserfunctions            xhprof

--------------------------
**Version**: unspecified
**Severity**: normal