tests/auto/clientSetupInCpp and declarative failed on win7

agent:2019/09/23 15:15:05 build.go:484: Executing instruction 35 of 36 - RunQtUnitTest
agent:2019/09/23 15:15:05 build.go:600: Running tests in directory C:/Users/qt/work/qt/qtopcua/tests/auto/declarative
agent:2019/09/23 15:15:05 runner.go:72: Generating test results with TESTARGS=-o C:\Users\qt\work\testresults\tests\auto\declarative916511559,xml -o -,txt
agent:2019/09/23 15:15:05 build.go:329: [Mingw32-make check] 900 900
agent:2019/09/23 15:15:05 build.go:220: call C:\Users\qt\work\qt\qtopcua\tests\auto\declarative\target_wrapper.bat  tst_opcua.exe -o C:\Users\qt\work\testresults\tests\auto\declarative916511559,xml -o -,txt -import "C:/Users/qt/work/qt/qtopcua/tests/auto/declarative/../../../src/plugins/declarative"
agent:2019/09/23 15:15:06 build.go:220: Server Path: "C:/Users/qt/work/qt/qtopcua/tests/auto/declarative/../../../open62541-testserver/open62541-testserver.exe"
agent:2019/09/23 15:15:06 build.go:220: all auto tests rely on an open62541-based test-server
agent:2019/09/23 15:15:06 build.go:220: Mingw32-make: *** [Makefile:315: check] Error -1073740286
agent:2019/09/23 15:15:06 build.go:253: Process finished with error: exit status 2
agent:2019/09/23 15:15:06 build.go:223: Error reading from stdout/err: exit status 2

agent:2019/09/23 15:20:03 build.go:484: Executing instruction 29 of 34 - RunQtUnitTest
agent:2019/09/23 15:20:03 build.go:600: Running tests in directory C:/Users/qt/work/qt/qtopcua/tests/auto/clientSetupInCpp
agent:2019/09/23 15:20:03 runner.go:72: Generating test results with TESTARGS=-o C:\Users\qt\work\testresults\tests\auto\clientSetupInCpp343803325,xml -o -,txt
agent:2019/09/23 15:20:03 build.go:329: [Mingw32-make check] 900 900
agent:2019/09/23 15:20:04 build.go:220: call C:\Users\qt\work\qt\qtopcua\tests\auto\clientSetupInCpp\target_wrapper.bat  tst_clientSetupInCpp.exe -o C:\Users\qt\work\testresults\tests\auto\clientSetupInCpp343803325,xml -o -,txt -import "C:/Users/qt/work/qt/qtopcua/tests/auto/clientSetupInCpp/../../../src/plugins/declarative"
agent:2019/09/23 15:20:04 build.go:220: Server Path: "C:/Users/qt/work/qt/qtopcua/tests/auto/clientSetupInCpp/../../../open62541-testserver/open62541-testserver.exe"
agent:2019/09/23 15:20:04 build.go:220: all auto tests rely on an open62541-based test-server
agent:2019/09/23 15:20:06 build.go:220: Mingw32-make: *** [Makefile:315: check] Error -1073740286
agent:2019/09/23 15:20:06 build.go:253: Process finished with error: exit status 2