tst_QDBusMarshall::sendArgument() failed on Ubuntu 20.04 in CI

agent:2020/10/28 12:52:02 build.go:379: FAIL!  : tst_QDBusMarshall::sendArgument(bool) Compared values are not the same
agent:2020/10/28 12:52:02 build.go:379:    Actual   (extracted): QVariant(bool,true)
agent:2020/10/28 12:52:02 build.go:379:    Expected (value)    : QVariant(QDBusArgument,<value not representable as string>)
agent:2020/10/28 12:52:02 build.go:379:    Loc: [../tst_qdbusmarshall.cpp(864)]
agent:2020/10/28 12:52:02 build.go:379: FAIL!  : tst_QDBusMarshall::sendArgument(bool2) Compared values are not the same
agent:2020/10/28 12:52:02 build.go:379:    Actual   (extracted): QVariant(bool,false)
agent:2020/10/28 12:52:02 build.go:379:    Expected (value)    : QVariant(QDBusArgument,<value not representable as string>)
agent:2020/10/28 12:52:02 build.go:379:    Loc: [../tst_qdbusmarshall.cpp(864)]
agent:2020/10/28 12:52:02 build.go:379: FAIL!  : tst_QDBusMarshall::sendArgument(byte) Compared values are not the same
agent:2020/10/28 12:52:02 build.go:379:    Actual   (extracted): QVariant(uchar,?)
agent:2020/10/28 12:52:02 build.go:379:    Expected (value)    : QVariant(QDBusArgument,<value not representable as string>)
agent:2020/10/28 12:52:02 build.go:379:    Loc: [../tst_qdbusmarshall.cpp(864)]
agent:2020/10/28 12:52:02 build.go:379: FAIL!  : tst_QDBusMarshall::sendArgument(int16) Compared values are not the same
agent:2020/10/28 12:52:02 build.go:379:    Actual   (extracted): QVariant(short,2)
agent:2020/10/28 12:52:02 build.go:379:    Expected (value)    : QVariant(QDBusArgument,<value not representable as string>)
agent:2020/10/28 12:52:02 build.go:379:    Loc: [../tst_qdbusmarshall.cpp(864)]
agent:2020/10/28 12:52:02 build.go:379: FAIL!  : tst_QDBusMarshall::sendArgument(uint16) Compared values are not the same
agent:2020/10/28 12:52:02 build.go:379:    Actual   (extracted): QVariant(ushort,3)
agent:2020/10/28 12:52:02 build.go:379:    Expected (value)    : QVariant(QDBusArgument,<value not representable as string>)
agent:2020/10/28 12:52:02 build.go:379:    Loc: [../tst_qdbusmarshall.cpp(864)]
agent:2020/10/28 12:52:02 build.go:379: FAIL!  : tst_QDBusMarshall::sendArgument(int32) Compared values are not the same
agent:2020/10/28 12:52:02 build.go:379:    Actual   (extracted): QVariant(int,1)
agent:2020/10/28 12:52:02 build.go:379:    Expected (value)    : QVariant(QDBusArgument,<value not representable as string>)
agent:2020/10/28 12:52:02 build.go:379:    Loc: [../tst_qdbusmarshall.cpp(864)]
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