debug windows test

Author: KristofferC

stdlib/InteractiveUtils/test/runtests.jl

@@ -515,6 +515,7 @@ end
     end
     @test e isa MethodError
     s = sprint(showerror, e)
+    @show s
     m = match(r"at (.*?):", s)
     @test isfile(expanduser(m.captures[1]))