Terrible error reporting when JDBC scheme is not recognized #2478 #5203

Job	Run time
Test with CockroachDB	3m 37s
Test with MariaDB	3m 25s
Run examples in 'session-example' on PostgreSQL	2m 4s
Test with Java 20	3m 1s
Test with Java 17	3m 14s
Test with Java 21	3m 12s
Test with Java 25	3m 7s
Test with PostgreSQL	3m 21s
Run examples in 'native-sql-example' on PostgreSQL	2m 2s
Test with Java 24	3m 8s
Test with MySQL	1m 32s
Run examples in 'session-example' on MySQL	2m 1s
Test with Oracle	3m 38s
Test with MSSQLServer	2m 0s
Test with Java 26-ea	3m 12s
Test with Db2	1m 35s
Test with Oracle	3m 32s
Test with MSSQLServer	3m 21s
Test with Db2	3m 30s
Run examples in 'session-example' on MySQL	2m 1s
Test with MySQL	3m 32s
Test with MariaDB	3m 30s
Test with PostgreSQL	3m 14s
Test with Java 21	3m 6s
Test with Java 24	3m 10s
Test with Java 26-ea	3m 26s
Test with CockroachDB	3m 32s
Test with Java 25	3m 14s
Test with Java 17	3m 10s
Test with Java 20	3m 4s
Run examples in 'session-example' on PostgreSQL	2m 4s
Run examples in 'native-sql-example' on PostgreSQL	2m 2s
	1h 33m 37s

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