#
# * `VERBOSE=1` - Print all commands. Use this to see what's going on.
# * `RUSTFLAGS=...` - Add compiler flags to all `rustc` invocations
+# * `JEMALLOC_FLAGS=...` - Pass flags to jemalloc's configure script
#
# * `TESTNAME=...` - Specify the name of tests to run
# * `CHECK_IGNORED=1` - Run normally-ignored tests