For code not in build script,
I can use environment variable
to convert warnings into errors.
But this does not work for build scripts because I do not find a similar env variable for them.
CARGO_ENCODED_RUSTFLAGS has no effect for build script.
I do not want to change the source code of
For dependencies from crates.io all lints are capped to allow by cargo so they will never cause compilation to fail. For a local crate yoi can pass RUSTFLAGS or use
#![deny(warnings)] at the top of your lib.rs or main.rs.
RUSTFLAGS not work for
and I prefer not to
#![deny(warnings] in source code,
so I can use different script wrapper (call cargo with different env vars),
to choose whether or not treat warnings as errors