imported/w3c/web-platform-tests/WebCryptoAPI/sign_verify/rsa_pss.worker.html fails on assertions like this: FAIL RSA-PSS with SHA-384, salted round trip assert_unreached: sign error for test RSA-PSS with SHA-384, salted: 'The operation failed for an operation-specific reason' Reached unreachable code https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2FWebCryptoAPI%2Fsign_verify%2Frsa_pss.worker.html The problem is not recent but manifests infrequently.
Updated expectations in r222572. Please update accordingly when this issue is resolved.