[Bug libstdc++/83626] std::experimental::filesystem::remove_all throws exception instead of returning 0 if path doesn't exist

[clyon at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83626

--- Comment #12 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Running the test manually with qemu only works, so it looks like there is a bad
interaction between proot and qemu. I'll try to investigate this more.