PostgreSQL connection drops: database system is shutting down in line 0: SELECT pg_advisory_unlock($1)

Build Environment Databases
1

I keep getting intermittent errors with the PostgreSQL connection when running migrations. When it happens it does so at seemingly random stages during the migration however it always provides the same reason pq: the database system is shutting down in line 0: SELECT pg_advisory_unlock($1).

error: driver: bad connection in line 0: INSERT INTO "schema_migrations" (version, dirty) VALUES ($1, $2) and pq: the database system is shutting down in line 0: SELECT pg_advisory_unlock($1)
Exited with code 1

The .circleci/config.yml looks as follows:

version: 2

defaults: &defaults
  docker:
    - image: circleci/golang:1.9.2

  working_directory: /go/src/github.com/example/my-project

jobs:
  checkout:
    <<: *defaults

    steps:
      # Cache the repo for other workflow jobs.
      - checkout
      - save_cache:
          key: repo-{{ .Environment.CIRCLE_SHA1 }}
          paths:
            - /go/src/github.com/example/my-project

  test:
    <<: *defaults

    docker:
      - image: circleci/golang:1.9.2
        environment:
          TEST_DATABASE_URL: postgres://test:@127.0.0.1:5432/circle_test?sslmode=disable
      - image: circleci/postgres:9.6-alpine-postgis-ram
        environment:
          POSTGRES_USER: test
          POSTGRES_DB: circle_test
          POSTGRES_PASSWORD: ""

    steps:
      - run: |
          go get -u -d github.com/mattes/migrate/cli github.com/lib/pq
          go build -tags 'postgres' -o $GOPATH/bin/migrate github.com/mattes/migrate/cli

      - restore_cache:
          key: repo-{{ .Environment.CIRCLE_SHA1 }}

      # Wait for PostgreSQL connection to open before running migrations.
      - run: dockerize -wait tcp://localhost:5432 -timeout 1m 
      - run:
          name: Run database migrations
          command: migrate -database ${TEST_DATABASE_URL} -path ./migrations up

      - run:
          name: Test
          command: go test -v ./... -race

workflows:
  version: 2

  all:
    jobs:
      - checkout
      - test:
          requires:
            - checkout

Any ideas what could cause this issue?

2

Looks like it’s a Go sql issue: