Description:

extra-x86_64-build fails with:

[ERROR] The compilation of ocaml-system failed at "/build/ocaml-easy-format/src/opam/opam-init/hooks/sandbox.sh build ocaml gen_ocaml_config.ml".

#=== ERROR while compiling ocaml-system.4.07.0 ================================#
# context 2.0.0 | linux/x86_64 | | https://opam.ocaml.org#c73e19ba
# path ~/ocaml-easy-format/src/opam/default/.opam-switch/build/ocaml-system.4.07.0
# command ~/ocaml-easy-format/src/opam/opam-init/hooks/sandbox.sh build ocaml gen_ocaml_config.ml
# exit-code 1
# env-file /tmp/opam-xxx-949/ocaml-system-949-b76d46.env
# output-file /tmp/opam-xxx-949/ocaml-system-949-b76d46.out
### output ###
# ERROR: ld.so: object 'libfakeroot.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
# bwrap: capset failed: Operation not permitted



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
┌─ The following actions failed
│ λ build ocaml-system 4.07.0
└─
┌─ The following changes have been performed (the rest was aborted)
│ ∗ install base-bigarray base
│ ∗ install base-threads base
│ ∗ install base-unix base
└─
# Run eval $(opam env) to update the current shell environment
Switch initialisation failed: clean up? ('n' will leave the switch partially installed) [Y/n]



Additional info:
* package version(s)
ocaml-easy-format 1.3.1-2 (git revision f9aa7eebdf9b1469432ceb61c0e712f9e84fc73f)
* config and/or log files etc.
full log is attached

Steps to reproduce:
> git checkout f9aa7eebdf9b1469432ceb61c0e712f9e84fc73f
> cd ocaml-easy-format/repos/community-x86_64
> extra-x86_64-build