borges now creates more connections to database

[jfontan]

The postgres configuration hasn't changed (max 100 connections) but it is now throwing errors. There is some change in the latest version that is increasing the number of connections:

{"endpoint":"git://github.com/lindsayevans/enki","job":"0163739b-6f82-c94d-847d-7b6eb5bd2d85","level":"debug","msg":"repository processed","source":"borges/archiver.go:120","status":"pending","time":"2018-05-18T14:43:28.799164963Z"}
{"error":"repository processed with errors: archiving 1 out of 1 roots failed: 4102d1afffc0a9be334a31b34e8dfb34a690bcf2","job":"0163739b-6f82-c94d-847d-7b6eb5bd2d85","level":"error","msg":"job finished with error","source":"go-log.v1/logger.go:37","time":"2018-05-18T14:43:28.799215569Z"}
{"job":"0163739b-bd61-a07b-df72-e86195851924","level":"debug","msg":"job started","source":"borges/archiver.go:97","time":"2018-05-18T14:43:28.801126757Z"}
{"error":"repository id not found: 0163739b-bd61-a07b-df72-e86195851924: pq: sorry, too many clients already","job":"0163739b-bd61-a07b-df72-e86195851924","level":"error","msg":"job finished with error","source":"go-log.v1/logger.go:37","time":"2018-05-18T14:43:28.803027467Z"}
{"job":"0163739b-bd8c-8e85-55d2-565072f280a4","level":"debug","msg":"job started","source":"borges/archiver.go:97","time":"2018-05-18T14:43:28.804715726Z"}
{"error":"repository id not found: 0163739b-bd8c-8e85-55d2-565072f280a4: pq: sorry, too many clients already","job":"0163739b-bd8c-8e85-55d2-565072f280a4","level":"error","msg":"job finished with error","source":"go-log.v1/logger.go:37","time":"2018-05-18T14:43:28.806683917Z"}
{"job":"0163739b-bdb6-4eee-2383-4cf3643c5ef9","level":"debug","msg":"job started","source":"borges/archiver.go:97","time":"2018-05-18T14:43:28.808430564Z"}
{"error":"repository id not found: 0163739b-bdb6-4eee-2383-4cf3643c5ef9: pq: sorry, too many clients already","job":"0163739b-bdb6-4eee-2383-4cf3643c5ef9","level":"error","msg":"job finished with error","source":"go-log.v1/logger.go:37","time":"2018-05-18T14:43:28.810387055Z"}
{"job":"0163739b-bddc-444b-410a-5cc9c79de19e","level":"debug","msg":"job started","source":"borges/archiver.go:97","time":"2018-05-18T14:43:28.812043553Z"}
{"error":"repository id not found: 0163739b-bddc-444b-410a-5cc9c79de19e: pq: sorry, too many clients already","job":"0163739b-bddc-444b-410a-5cc9c79de19e","level":"error","msg":"job finished with error","source":"go-log.v1/logger.go:37","time":"2018-05-18T14:43:28.813987323Z"}
{"job":"0163739b-be00-1741-b1da-5b655871250f","level":"debug","msg":"job started","source":"borges/archiver.go:97","time":"2018-05-18T14:43:28.816165532Z"}
{"error":"repository id not found: 0163739b-be00-1741-b1da-5b655871250f: pq: sorry, too many clients already","job":"0163739b-be00-1741-b1da-5b655871250f","level":"error","msg":"job finished with error","source":"go-log.v1/logger.go:37","time":"2018-05-18T14:43:28.818107025Z"}
{"job":"0163739b-be46-0237-2937-a5fca14b95fa","level":"debug","msg":"job started","source":"borges/archiver.go:97","time":"2018-05-18T14:43:28.819692848Z"}