+max_level_trace = []
+# Allow signing of local transactions that may have been revoked or will be revoked, for functional testing (e.g. justice tx handling).
+# This is unsafe to use in production because it may result in the counterparty publishing taking our funds.
+unsafe_revoked_tx_signing = []
+_bench_unstable = []
+# Override signing to not include randomness when generating signatures for test vectors.
+_test_vectors = []
+
+no-std = ["hashbrown", "bitcoin/no-std", "core2/alloc"]
+std = ["bitcoin/std"]
+
+# Generates low-r bitcoin signatures, which saves 1 byte in 50% of the cases
+grind_signatures = []
+
+default = ["std", "grind_signatures"]