rename tests

Author: marcoieni

src/bootstrap/mk/Makefile.in

@@ -110,7 +110,7 @@ ci-msvc: ci-msvc-py ci-msvc-ps1
 
 # Set of tests that should represent half of the time of the test suite.
 # Used to split tests across multiple CI runners.
-TESTS_IN_MINGW_2 := \
+TESTS_IN_MINGW_X := \
 	tests/ui \
 	tests/rustdoc \
 	tests/run-make \
@@ -120,9 +120,9 @@ TESTS_IN_MINGW_2 := \
 
 # test both x and bootstrap entrypoints
 ci-mingw-x:
-	$(Q)$(CFG_SRC_DIR)/x test --stage 2 $(TESTS_IN_MINGW_2)
+	$(Q)$(CFG_SRC_DIR)/x test --stage 2 $(TESTS_IN_MINGW_X)
 ci-mingw-bootstrap:
-	$(Q)$(BOOTSTRAP) test --stage 2 $(TESTS_IN_MINGW_2:%=--skip %)
+	$(Q)$(BOOTSTRAP) test --stage 2 $(TESTS_IN_MINGW_X:%=--skip %)
 ci-mingw: ci-mingw-x ci-mingw-bootstrap
 
 .PHONY: dist