https://hudson.jboss.org/hudson/job/hibernate-core-master-matrix/lastCompletedBuild/database=sybase155,jdk=java17_default,label=hibernate/testReport/org.hibernate.test.annotations.lob/SerializableToBlobTypeTest/testPersist/

The Sybase dialect maps BLOBs to images – Sybase does not support BLOB types.

SerializableToImageType is not used anywhere. All serializables use the SerializableToBlobType, causing the JDBC error on the CI link above.