See https://beats-ci.elastic.co/blue/organizations/jenkins/e2e-tests%2Fe2e-testing-mbp/detail/7.13.x/39/pipeline

Steps to reproduce:

export BEATS_USE_CI_SNAPSHOTS=true
# git sha1 from the above build:
export GITHUB_CHECK_SHA1=b332fc28794083e360eac220a5150b443dec6d15
SUITE="fleet" TAGS="stand_alone_agent" TIMEOUT_FACTOR=3  LOG_LEVEL=TRACE  DEVELOPER_MODE=true \
    make -C e2e functional-test

Error

[2021-05-25T12:54:24.442Z] time="2021-05-25T12:54:24Z" level=fatal msg="Sorry, we could not download the installer" error="Reached the end of the pages and the elastic-agent/elastic-agent-7.13.0-SNAPSHOT-linux-x86_64.tar.gz object was not found for the beats-ci-artifacts bucket and commits/b332fc28794083e360eac220a5150b443dec6d15 prefix" image=centos installer=tar

Possible root cause

The artifact is resolved as 7.13.0-SNAPSHOT, when the bucket contains an artifact for 7.13.1-SNAPSHOT. See bucket on GCP