This is a workaround for a concurency bug, occuring sporadically when
test file names in different folders are duplicate.
The duplicate in this case was with vlib/v/ast/types_test.v
vlib is the term for all modules included by default with V and
maintained as part of the V source code repository.
Some included modules depend on third party libraries, and these are kept
separate in the thirdparty directory at the root level of the source
repository.