Composer installs keep failing

The last few days our build keep failing on Composer install, sometime it goes through but most of the time it fails.
This wasn’t a problem last week, nothing has changed in the travis.yml in between.

https://travis-ci.com/github/Elgg/Elgg/jobs/303883152

  • Installing bower-asset/fontawesome (5.12.1): Cloning 0d1f27efb8
    [RuntimeException]
    Failed to execute git clone --no-checkout ‘git@github.com:FortAwesome/Font-Awesome.git’ ‘/home/travis/build/Elgg/Elgg/vendor/bower-asset/fontawesome’ && cd ‘/home/travis/build/Elgg/Elgg/vendor/bower-asset/fontawesome’ && git remote add composer ‘git@github.com:FortAwesome/Font-Awesome.git’ && git fetch composer && git remote set-url origin ‘git@github.com:FortAwesome/Font-Awesome.git’ && git remote set-url composer ‘git@github.com:FortAwesome/Font-Awesome.git’
    Cloning into ‘/home/travis/build/Elgg/Elgg/vendor/bower-asset/fontawesome’…
    Permission denied (publickey).
    fatal: Could not read from remote repository.
    Please make sure you have the correct access rights and the repository exists.

Somehow the issue has been fixed. Now builds continue as usual.

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