#
# * `CFG_ENABLE_VALGRIND=1` - Run tests under valgrind
# * `VALGRIND_COMPILE=1` - Run the compiler itself under valgrind
-# (may require `CFG_ENABLE_VALGRIND`)
+# (requires `CFG_ENABLE_VALGRIND`)
#
# * `NO_REBUILD=1` - Don't rebootstrap when testing std
# (and possibly other crates)