apidiff/apidiff_test.go | 3 3 + 0 - 0 !
1 file changed, 3 insertions(+)

 skip apidiff test

Need golang.org/x/tools

constraints/constraints_test.go | 3 3 + 0 - 0 !
1 file changed, 3 insertions(+)

 skip constraints test

Need to run in go module mode

typeparams/typeparams_test.go | 7 7 + 0 - 0 !
1 file changed, 7 insertions(+)

 typeparams: don't complain that go 1.17 doesn't support iterators

This fixes a test that broke when iterator methods were added
to go/types in CL 575455.

Fixes golang/go#69000