Could you please try the branch petsc-3.14.0? This branch installs a very recent snapshot of PETSc (from this morning), which should fix this issue, and which is very close to the upcoming PETSc release 3.14.0. So if you agree to be a guinea pig, I’d be really grateful if you report FreeFEM/PETSc error with this branch 
(I’ve made a good deal of troubleshooting myself, so it should be a clean process, but you never know…)
By the way, it will also install ARPACK from SLEPc, so it would be interesting to see if you still have make check failures in examples/eigen.
$ git clone -b petsc-3.14.0 https://github.com/FreeFem/FreeFem-sources
$ cd FreeFem-sources && autoreconf -i
$ ./configure --enable-download --prefix=~/FreeFem-install
$ cd 3rdparty/ff-petsc && make petsc-slepc
$ cd - && ./reconfigure
$ make && make check