vertx_pool_queue_pending grows indefinitely when connection acquisition fails #353

Job	Run time
CI-CD / CI (ubuntu-latest, 11, DB2-11.5) / Run tests	17m 51s
CI-CD / CI (ubuntu-latest, 11, PostgreSQL-9) / Run tests	4m 43s
CI-CD / CI (ubuntu-latest, 11, MySQL-8.0) / Run tests	2m 4s
CI-CD / CI (ubuntu-latest, 11, SQL-templates) / Run tests	6m 50s
CI-CD / CI (ubuntu-latest, 25, PostgreSQL-11) / Run tests	4m 49s
CI-CD / CI (ubuntu-latest, 11, PostgreSQL-10) / Run tests	4m 44s
CI-CD / CI (ubuntu-latest, 11, MySQL-5.7) / Run tests	2m 12s
CI-CD / CI (ubuntu-latest, 25, MSSQL-2019-latest) / Run tests	1m 45s
CI-CD / CI (ubuntu-latest, 25, MySQL-5.7) / Run tests	2m 13s
CI-CD / CI (ubuntu-latest, 25, MariaDB-10.4) / Run tests	2m 12s
CI-CD / CI (ubuntu-latest, 11, PostgreSQL-11) / Run tests	4m 35s
CI-CD / CI (ubuntu-latest, 11, MySQL-5.6) / Run tests	2m 15s
CI-CD / CI (ubuntu-latest, 11, MSSQL-2019-latest) / Run tests	1m 44s
CI-CD / CI (ubuntu-latest, 25, Oracle-23) / Run tests	2m 9s
CI-CD / CI (ubuntu-latest, 11, MSSQL-2017-latest) / Run tests	1m 39s
CI-CD / CI (ubuntu-latest, 11, MariaDB-10.4) / Run tests	2m 26s
CI-CD / Deploy to OSSRH	-1s
	1h 4m 10s

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