import json
import subprocess
commond = "cargo test --package small-db --test btree_insert_test --all-features --no-run --message-format=json"
result = subprocess.run(commond.split(), stdout=subprocess.PIPE)
s = result.stdout.decode('utf-8')
lines = s.splitlines()
for line in lines:
obj = json.loads(line)
if "executable" in obj:
v = obj["executable"]
if v:
print(v)
break