import re
import sys

def extract_errors(s: str, limit: int = 120):
    lines = s.splitlines()
    errs = []
    for ln in lines:
        if any(tok in ln for tok in ("error[E", "panicked at", "FAILED", "error:")):
            errs.append(ln)
            if len(errs) >= limit:
                break
    return "\n".join(errs)

if __name__ == "__main__":
    text = sys.stdin.read()
    print(extract_errors(text))