diff --git a/mk/tests.mk b/mk/tests.mk
index 3340f9b4969..17bacbefacb 100644
--- a/mk/tests.mk
+++ b/mk/tests.mk
@@ -73,21 +73,6 @@ endif
 TEST_LOG_FILE=tmp/check-stage$(1)-T-$(2)-H-$(3)-$(4).log
 TEST_OK_FILE=tmp/check-stage$(1)-T-$(2)-H-$(3)-$(4).ok
 
-TEST_RATCHET_FILE=tmp/check-stage$(1)-T-$(2)-H-$(3)-$(4)-metrics.json
-TEST_RATCHET_NOISE_PERCENT=10.0
-
-# Whether to ratchet or merely save benchmarks
-ifdef CFG_RATCHET_BENCH
-CRATE_TEST_EXTRA_ARGS= \
-  --test $(TEST_BENCH) \
-  --ratchet-metrics $(call TEST_RATCHET_FILE,$(1),$(2),$(3),$(4)) \
-  --ratchet-noise-percent $(TEST_RATCHET_NOISE_PERCENT)
-else
-CRATE_TEST_EXTRA_ARGS= \
-  --test $(TEST_BENCH) \
-  --save-metrics $(call TEST_RATCHET_FILE,$(1),$(2),$(3),$(4))
-endif
-
 # If we're sharding the testsuite between parallel testers,
 # pass this argument along to the compiletest and crate test
 # invocations.
@@ -454,7 +439,6 @@ $$(call TEST_OK_FILE,$(1),$(2),$(3),$(4)): \
 	$$(Q)touch tmp/check-stage$(1)-T-$(2)-H-$(3)-$(4).log
 	$$(Q)$(CFG_ADB) pull $(CFG_ADB_TEST_DIR)/check-stage$(1)-T-$(2)-H-$(3)-$(4).log tmp/
 	$$(Q)$(CFG_ADB) shell rm $(CFG_ADB_TEST_DIR)/check-stage$(1)-T-$(2)-H-$(3)-$(4).log
-	$$(Q)$(CFG_ADB) pull $(CFG_ADB_TEST_DIR)/$$(call TEST_RATCHET_FILE,$(1),$(2),$(3),$(4)) tmp/
 	@if grep -q "result: ok" tmp/check-stage$(1)-T-$(2)-H-$(3)-$(4).tmp; \
 	then \
 		rm tmp/check-stage$(1)-T-$(2)-H-$(3)-$(4).tmp; \
@@ -696,7 +680,6 @@ CTEST_ARGS$(1)-T-$(2)-H-$(3)-$(4) := \
         $$(CTEST_COMMON_ARGS$(1)-T-$(2)-H-$(3)) \
         --src-base $$(S)src/test/$$(CTEST_SRC_BASE_$(4))/ \
         --build-base $(3)/test/$$(CTEST_BUILD_BASE_$(4))/ \
-        --ratchet-metrics $(call TEST_RATCHET_FILE,$(1),$(2),$(3),$(4)) \
         --mode $$(CTEST_MODE_$(4)) \
 	$$(CTEST_RUNTOOL_$(4))