Obtaining certificate chain for diffmut.princeton.edu, one moment while we download the diffmut.princeton.edu certificate and related intermediate certificates...
Revocation check via OCSP and CRL for diffmut.princeton.edu failed
Sorry, the request for diffmut.princeton.edu could not be completed...
We could not load the certificate for diffmut.princeton.edu, it might not exist or we could not reach the server, complete the TLS handshake, etc.
Revoked certificates can't and should not be trusted, these certificate will cause errors like "NET::ERR_CERT_REVOKED" in browsers and expose a security risk.