cloud-sql/sqlserver/mssql: Uncaught error outside test suite failed

[flaky-bot]

Note: #2238 was also for this test, but it was closed more than 10 days ago. So, I didn't mark it flaky.

---

commit: d13947b
buildURL: Build Status, Sponge
status: failed

Test output

Failed to connect to 127.0.0.1:1433 - Could not connect (sequence)
ConnectionError: Failed to connect to 127.0.0.1:1433 - Could not connect (sequence)
    at /tmpfs/src/github/nodejs-docs-samples/cloud-sql/sqlserver/mssql/node_modules/mssql/lib/tedious/connection-pool.js:71:17
    at Connection.onConnect (node_modules/tedious/lib/connection.js:1043:9)
    at Connection.emit (node_modules/tedious/lib/connection.js:1071:18)
    at Connection.socketError (node_modules/tedious/lib/connection.js:1669:12)
    at /tmpfs/src/github/nodejs-docs-samples/cloud-sql/sqlserver/mssql/node_modules/tedious/lib/connection.js:1428:21
    at SequentialConnectionStrategy.connect (node_modules/tedious/lib/connector.js:129:14)
    at Socket.onError (node_modules/tedious/lib/connector.js:149:12)
    at emitErrorNT (internal/streams/destroy.js:92:8)
    at emitErrorAndCloseNT (internal/streams/destroy.js:60:3)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)