ci: turn rustc warnings into errors in the CI
ci: turn rustc warnings into errors in the CI
followup of !431 (merged) [1]
deny(warnings) is an anti-pattern as a newer release of the compiler can cause working/released builds to stop compilling for downstreams.
Having to export a RUST_FLAG is not the prettiest, but its the best we got atm [2]
[1] !431 (merged)
Edited by Jordan Petridis