fix

Author: jw3126

test/runtests.jl

@@ -147,7 +147,9 @@ struct Bad end
 @testset "Error messages" begin
     @macroexpand @batteries Bad
     @macroexpand @batteries Bad typesalt = 0xb6a4b9eeeb03b58b
-    @test_throws "`typesalt` must be literally `nothing` or an unsigned integer." @macroexpand @batteries Bad typesalt = "ouch"
-    @test_throws "Unsupported keyword." @macroexpand @batteries Bad does_not_exist = true   
-    @test_throws "Bad keyword argument value" @macroexpand @batteries Bad hash=:nonsense
+    if VERSION >= v"1.7"
+        @test_throws "`typesalt` must be literally `nothing` or an unsigned integer." @macroexpand @batteries Bad typesalt = "ouch"
+        @test_throws "Unsupported keyword." @macroexpand @batteries Bad does_not_exist = true   
+        @test_throws "Bad keyword argument value" @macroexpand @batteries Bad hash=:nonsense
+    end
 end