Allow everything to fail to try to build everything and find what's wrong

.gitlab-ci.yml

@@ -40,7 +40,7 @@ ocaml_403:
   stage: test
   image: ocaml/opam:alpine_ocaml-4.03.0
   script: "./gitlab-ci.sh"
-  allow_failure: false
+  allow_failure: true
 
 # OCaml version 4.03, with flambda optimisation
 ocaml_403_flambda: