Version `GLIBC_2.27' not found

Around 20% of my builds are failing due to this library not being found in my use of an external library.

Does anyone know why this would happen?
It is not every build but it is often enough to seriously slow down our process.

This error is returned by some 3rd-party tool that you are using, rattletrap-linux. So I suggest you investigate that way.

I am very aware of the 3rd party tool.

But this only pops up in 20% of my builds on travis.
So it is travis os that is making this happen.
I have not been able to reproduce this locally so there is no way to “investigate” this except for that 20% of the time when travis happens to have an instance that fails.