Fix broken pipeline
Because the project was frozen for a while it's pipeline becomes outdated.
Running with gitlab-runner 11.5.0-rc1 (e900028d) on docker-auto-scale 0277ea0f Using Docker executor with image iceyec/ci-rust ... Pulling docker image iceyec/ci-rust ... ERROR: Job failed: Error response from daemon: pull access denied for iceyec/ci-rust, repository does not exist or may require 'docker login' (executor_docker.go:168:0s)
We need to find a new docker image and research other possible problems.