There might have been twenty people there, young and old, but they all played, and so did Scrooge; for wholly forgetting in the interest he had in what was going on, that his voice made no sound in their ears, he sometimes came out with his guess quite loud, and very often guessed quite right, too; for the sharpest needle, best Whitechapel, warranted not to cut in the eye, was not sharper than Scrooge; blunt as he took it in his head to be.
There are no more uses of "warrant" in the book.
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The company’s reputation for high-quality products is no longer warranted.
She believes the invasion of privacy is warranted to assist in the battle against terrorists.