Building on kubuntu KCI the current master branch, duplicates test and build fails as follows:


Running tests...
/usr/bin/ctest --force-new-ctest-process -j4
Test project /<<BUILDDIR>>/oxygen-icons5-5.28.0+p17.04+git20170107.2017/obj-x86_64-linux-gnu
    Start 1: symlink
    Start 2: newline
    Start 3: dupe
1/3 Test #1: symlink ..........................   Passed    0.11 sec
2/3 Test #2: newline ..........................   Passed    0.11 sec
3/3 Test #3: dupe .............................***Failed    0.50 sec
********* Start testing of DupeTest *********
Config: Using QtTest library 5.7.1, Qt 5.7.1 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 6.3.0 20161229)
PASS   : DupeTest::initTestCase()
FAIL!  : DupeTest::test_duplicates() 
  The following files are duplicates but not links:
    - /<<BUILDDIR>>/oxygen-icons5-5.28.0+p17.04+git20170107.2017/32x32/actions/albumfolder-importdir.png
    - /<<BUILDDIR>>/oxygen-icons5-5.28.0+p17.04+git20170107.2017/32x32/places/folder-image.png

   Loc: [/<<BUILDDIR>>/oxygen-icons5-5.28.0+p17.04+git20170107.2017/autotests/testhelpers.h(42)]
FAIL!  : DupeTest::test_duplicates() 
  The following files are duplicates but not links:
    - /<<BUILDDIR>>/oxygen-icons5-5.28.0+p17.04+git20170107.2017/32x32/actions/albumfolder-new.png
    - /<<BUILDDIR>>/oxygen-icons5-5.28.0+p17.04+git20170107.2017/32x32/actions/folder-new.png

   Loc: [/<<BUILDDIR>>/oxygen-icons5-5.28.0+p17.04+git20170107.2017/autotests/testhelpers.h(42)]
FAIL!  : DupeTest::test_duplicates() 
  The following files are duplicates but not links:
    - /<<BUILDDIR>>/oxygen-icons5-5.28.0+p17.04+git20170107.2017/32x32/mimetypes/application-x-egon.png
    - /<<BUILDDIR>>/oxygen-icons5-5.28.0+p17.04+git20170107.2017/32x32/actions/albumfolder-importimages.png

   Loc: [/<<BUILDDIR>>/oxygen-icons5-5.28.0+p17.04+git20170107.2017/autotests/testhelpers.h(42)]
PASS   : DupeTest::cleanupTestCase()
Totals: 2 passed, 3 failed, 0 skipped, 0 blacklisted, 490ms
********* Finished testing of DupeTest *********


67% tests passed, 1 tests failed out of 3

Total Test time (real) =   0.50 sec

The following tests FAILED:
	  3 - dupe (Failed)
Errors while running CTest