Go 1.13具有Go Tools版本12.9

I created the dir TEST-13 under GOPATH/src

I installed hello.go and hello_test.go (the specified test code files)

Is there a reason that in version 1.13 running go mod init produces the following go.mod:

module TEST-13

go 1.12

Running go tet in the directory gets errors - See example:

compile: version "go1.13" does not match go tool version "go1.12.9"

This message produces 7 similar messages for various library modules

How do I fix this - or is it a release error? - or did I mess up the install?

I have solved the problem by removing all traces of previous go installations and reinstalling.

Thank you for you answers