This adds a subcommand ./mach cargo udeps with the following
sub command arguments:
Sub Command Arguments:
--all-crates Check all of the crates in the tree.
crates The crate name(s) to check.
--jobs [jobs], -j [jobs]
Run the tests in parallel using multiple
processes.
-v, --verbose Verbose output.
--message-format-json
Emit error messages as JSON.
--expect-unused Do not return an error exit code if udeps
detects unused dependencies.
Differential Revision: https://phabricator.services.mozilla.com/D159838
