partial link / unexpected build steps

$ qbs release
INFO: Your main project file has the old suffix '.qbp'. This does not hurt, but the convention is now to use '.qbs'.
INFO: Starting activity 'Building project'.
Scanning source files...
Applying moc rules for 'Welcome'.
Applying moc rules for 'TextEditor'.
Applying moc rules for 'QtSupport'.
Applying moc rules for 'ProjectExplorer'.
Applying moc rules for 'Android'.
Applying moc rules for 'Debugger'.
Applying moc rules for 'GenericProjectManager'.
Applying moc rules for 'Core'.
Applying moc rules for 'Locator'.
Applying moc rules for 'Aggregation'.
Applying moc rules for 'QmlJSTools'.
Applying moc rules for 'CPlusPlus'.
Applying moc rules for 'Utils'.
Applying moc rules for 'cpaster'.
Applying moc rules for 'ImageViewer'.
Applying moc rules for 'QmlDebug'.
Applying moc rules for 'Git'.
Applying moc rules for 'Designer'.
Applying moc rules for 'BinEditor'.
Applying moc rules for 'QmlEditorWidgets'.
Applying moc rules for 'Valgrind'.
Applying moc rules for 'ClearCase'.
Applying moc rules for 'CppTools'.
Applying moc rules for 'Qt4ProjectManager'.
Applying moc rules for 'Help'.
Applying moc rules for 'qtcreator'.
Applying moc rules for 'QmlJSEditor'.
Applying moc rules for 'Macros'.
Applying moc rules for 'CppEditor'.
Applying moc rules for 'AnalyzerBase'.
Applying moc rules for 'styleplugin'.
Applying moc rules for 'QtcSsh'.
Applying moc rules for 'ResourceEditor'.
Applying moc rules for 'RemoteLinux'.
Applying moc rules for 'ClassView'.
Applying moc rules for 'Bookmarks'.
Applying moc rules for 'ExtensionSystem'.
Applying moc rules for 'VcsBase'.
Applying moc rules for 'Find'.
Applying moc rules for 'QmlJS'.
uic androiddeploystepwidget.ui
uic androidsettingswidget.ui                                                                                                                                                               
prepare Android.pluginspec                                                                                                                                                                 
moc androidconfigurations.h                                                                                                                                                                
uic androidcreatekeystorecertificate.ui                                                                                                                                                    
compiling moc_androidconfigurations.cpp
moc androidcreatekeystorecertificate.h
compiling androidcreatekeystorecertificate.cpp
compiling moc_androidcreatekeystorecertificate.cpp
compiling androidsettingswidget.cpp
compiling androidsettingspage.cpp
compiling androiddevicefactory.cpp
moc androiddevicefactory.h
compiling moc_androiddevicefactory.cpp
compiling androiddevice.cpp
compiling Type.cpp
compiling Scope.cpp
compiling NameVisitor.cpp
compiling TypeMatcher.cpp
moc androidsettingswidget.h
moc androidplugin.h                                                                                                                                                                        
compiling moc_androidsettingswidget.cpp
compiling moc_androidplugin.cpp
moc androidsettingspage.h
compiling moc_androidsettingspage.cpp
moc androidrunner.h
compiling moc_androidrunner.cpp
compiling androidconfigurations.cpp
moc androiddebugsupport.h
moc androidruncontrol.h                                                                                                                                                                    
compiling moc_androidruncontrol.cpp
compiling moc_androiddebugsupport.cpp
moc androiddeployconfiguration.h
compiling moc_androiddeployconfiguration.cpp
moc androidrunconfiguration.h
compiling Symbol.cpp
compiling moc_androidrunconfiguration.cpp
compiling Lexer.cpp
compiling CoreTypes.cpp
moc androidrunfactories.h
compiling androidqtversion.cpp
compiling moc_androidrunfactories.cpp
compiling ObjectiveCAtKeywords.cpp
compiling androidtoolchain.cpp
moc addlibrarywizard.h
moc librarydetailscontroller.h                                                                                                                                                             
compiling moc_librarydetailscontroller.cpp
moc androiddeploystepwidget.h
moc androiddeploystep.h                                                                                                                                                                    
compiling androiddeployconfiguration.cpp
compiling androidruncontrol.cpp
compiling androiddeploystep.cpp
compiling androidplugin.cpp
compiling androiddeploystepfactory.cpp
compiling androidpackagecreationwidget.cpp
compiling androidrunconfiguration.cpp
moc androidpackageinstallationfactory.h
moc androidpackagecreationstep.h                                                                                                                                                           
compiling moc_androidpackagecreationstep.cpp
moc androidpackagecreationwidget.h
moc javaparser.h                                                                                                                                                                           
compiling moc_androiddeploystepwidget.cpp
compiling moc_androiddeploystep.cpp
compiling androidpackagecreationfactory.cpp
compiling androiddeploystepwidget.cpp
compiling moc_javaparser.cpp
compiling javaparser.cpp
compiling moc_androidpackagecreationwidget.cpp
compiling moc_androidpackageinstallationfactory.cpp
moc androidpackageinstallationstep.h
compiling moc_androidpackageinstallationstep.cpp
moc androiddeploystepfactory.h
compiling moc_androiddeploystepfactory.cpp
compiling androidrunner.cpp
compiling androidpackageinstallationfactory.cpp
compiling androidpackageinstallationstep.cpp
compiling androidpackagecreationstep.cpp
compiling androiddebugsupport.cpp
compiling Names.cpp
compiling androidrunfactories.cpp
compiling androidmanager.cpp
compiling moc_addlibrarywizard.cpp
compiling qmakeglobals.cpp
moc profilereader.h
compiling androidqtversionfactory.cpp
compiling moc_profilereader.cpp
compiling profilereader.cpp
compiling qmakebuiltins.cpp
moc androidpackagecreationfactory.h
compiling moc_androidpackagecreationfactory.cpp
moc androidmanager.h
compiling moc_androidmanager.cpp
moc androidtoolchain.h
compiling moc_androidtoolchain.cpp
compiling ASTVisitor.cpp
compiling ASTPatternBuilder.cpp
compiling Control.cpp
compiling Literals.cpp
linking libAndroid.so
Build done.
INFO: Activity 'Building project' took 54s, 292ms.
$ qbs release
INFO: Your main project file has the old suffix '.qbp'. This does not hurt, but the convention is now to use '.qbs'.
INFO: Starting activity 'Building project'.
linking libQtSupport.so
linking libCPlusPlus.so                                                                                                                                                                    
linking libCppTools.so                                                                                                                                                                     
linking libVcsBase.so                                                                                                                                                                      
linking libQmlJSTools.so                                                                                                                                                                   
linking libClearCase.so                                                                                                                                                                    
linking libDebugger.so                                                                                                                                                                     
linking libQmlJSEditor.so                                                                                                                                                                  
linking libGit.so                                                                                                                                                                          
linking libCppEditor.so                                                                                                                                                                    
linking libRemoteLinux.so                                                                                                                                                                  
linking libQt4ProjectManager.so                                                                                                                                                            
linking libAnalyzerBase.so                                                                                                                                                                 
linking libValgrind.so                                                                                                                                                                     
linking libClassView.so                                                                                                                                                                    
linking libGenericProjectManager.so                                                                                                                                                        
linking libDesigner.so                                                                                                                                                                     
Build done.
INFO: Activity 'Building project' took 11s, 839ms.
$ qbs release
INFO: Your main project file has the old suffix '.qbp'. This does not hurt, but the convention is now to use '.qbs'.
INFO: Starting activity 'Building project'.
linking libAndroid.so
Build done.
INFO: Activity 'Building project' took 1s, 921ms.