add -v0 to Over, we don't care in which order the modules are loaded

testsuite/tests/ghc-regress/indexed-types/should_fail/Over.stderr

-[1 of 4] Compiling OverA            ( OverA.hs, OverA.o )
-[2 of 4] Compiling OverC            ( OverC.hs, OverC.o )
-[3 of 4] Compiling OverB            ( OverB.hs, OverB.o )
-[4 of 4] Compiling OverD            ( OverD.hs, OverD.o )
 
 OverB.hs:7:14:
     Conflicting family instance declarations:

testsuite/tests/ghc-regress/indexed-types/should_fail/all.T

@@ -29,7 +29,7 @@ test('TyFamUndec', normal, compile_fail, [''])
 
 test('GADTwrong1', if_compiler_lt('ghc', '6.9', expect_fail), compile_fail, [''])
 
-test('Over', normal, multimod_compile_fail, ['OverD', '-no-hs-main -no-link'])
+test('Over', normal, multimod_compile_fail, ['OverD', '-no-hs-main -no-link -v0'])
 clean(['OverA.hi', 'OverA.o', 'OverB.hi', 'OverB.o', 'OverC.hi', 'OverC.o'])
 
 test('SkolemOccursLoop', if_compiler_lt('ghc', '6.9', skip), compile_fail, [''])