Recently we that build [1] looks the CreateAutoConf step [2] green but internally there was a problem, meaning that the status code is somehow not being checked. 

This is the error log observed on [2]

---snip---
Initialized empty Git repository in /srv/www/vhosts/autobuilder.yoctoproject.org/buildhistory/poky/master-next/nightly-mips/.git/
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Switched to a new branch 'poky/master-next/nightly-mips'
[poky/master-next/nightly-mips (root-commit) 509ea75] Initializing Repo
 Committer: Poky Build User <pokybuild@fedora25.osl.yoctoproject.org>
Your name and email address were configured automatically based
on your username and hostname. Please check that they are accurate.
You can suppress this message by setting them explicitly. Run the
following command and follow the instructions in your editor to edit
your configuration file:

    git config --global --edit

After doing this, you may fix the identity used for this commit with:

    git commit --amend --reset-author

 1 file changed, 1 insertion(+)
 create mode 100644 README
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
---snip---

[1] https://autobuilder.yoctoproject.org/main/builders/nightly-mips/builds/1107
[2] https://autobuilder.yoctoproject.org/main/builders/nightly-mips/builds/1107/steps/CreateAutoConf/logs/stdio