The project failed to meet the expectations.
They failed not to complain.
We failed not to feel nervous.
I failed not to notice the change.
He failed not to notice the change.
He failed not to judge too quickly.
He failed not to react to the news.
They failed not to ask for more details.
She failed not to smile at the surprise.
He was shocked to learn he failed the exam.
We were ready to present, but the system failed.