CI: can't load package github.com/stretchr/testify v1.3.0

[sawadashota]

Describe the bug

can't load package github.com/stretchr/testify v1.3.0 at CircleCI however go.mod point v1.2.2.
So that CI failed before testing our implements.

CircleCI log

$ #!/bin/bash -eo pipefail
go-acc -o coverage.txt ./... -- -failfast -timeout=20m
can't load package: package go: downloading github.com/stretchr/testify v1.3.0: unknown import path "go: downloading github.com/stretchr/testify v1.3.0": cannot find module providing package go: downloading github.com/stretchr/testify v1.3.0
exit status 1
Exited with code 1

https://circleci.com/gh/ory/hydra/5694
https://circleci.com/gh/ory/hydra/5696
https://circleci.com/gh/ory/hydra/5703

To Reproduce
Steps to reproduce the behavior:

1. exec go-acc -o coverage.txt ./... -- -failfast -timeout=20m at CircleCI

Expected behavior

Download github.com/stretchr/testify successfully

Screenshots

Version:

• Environment: CircleCI
• Version: master