Error for vector-valued Lagrangian FEs in Github actions with Julia 1.9.x

[amartinhuertas]

Documenting here a very annoying error that I have found with vector-valued Lagrangian FEs in Github actions and Julia 1.9.x.

In particular, the following command:

mpiexec -n 4 --allow-run-as-root --oversubscribe /opt/hostedtoolcache/julia/1.9.1/x64/bin/julia -Cnative -J/opt/hostedtoolcache/julia/1.9.1/x64/lib/julia/sys.so --check-bounds=yes -g1 --color=yes --project=/home/runner/work/GridapP4est.jl/GridapP4est.jl/test/.. /home/runner/work/GridapP4est.jl/GridapP4est.jl/test/mpi/PoissonNonConformingOctreeModelsTests.jl

With the julia script in the status corresponding to, e.g., commit 9fa3996, crashes (intermittently, not a reproducible BUG, unfortunately), here:

GridapP4est.jl/test/PoissonNonConformingOctreeModelsTests.jl

Line 152 in 9fa3996

op = AffineFEOperator(ahred,bhred,Uhred,Vhred)

The error can be found here:

https://github.com/gridap/GridapP4est.jl/actions/runs/6667489288/job/18121048574#step:12:152

I cannot reproduce the problem in my local machine. When I switch to Julia 1.8 in Github actions the problem seems to disappear.

[amartinhuertas]

For the records, I tried to reproduce the error in Gadi login node with Julia 1.9.1, and the error did not arised. Thus, I am going to accept PR #50. If in the future we find errors with vector-valued lagrange FEs, this should be the first point to look at.