Ignore long forms of flags the same as short.

Bug: 317913182
Test: Ran on axum 0.6.20.
Change-Id: I521c54bc3da83085c565ed23f26c3d79c327f406

tools/cargo_embargo/src/cargo/cargo_out.rs

diff --git a/tools/cargo_embargo/src/cargo/cargo_out.rs b/tools/cargo_embargo/src/cargo/cargo_out.rs
index a306238..bb91b85 100644
--- a/tools/cargo_embargo/src/cargo/cargo_out.rs
+++ b/tools/cargo_embargo/src/cargo/cargo_out.rs
@@ -358,9 +358,13 @@
                 _ if arg.starts_with("--edition=") => {}
                 _ if arg.starts_with("--json=") => {}
                 _ if arg.starts_with("-Aclippy") => {}
+                _ if arg.starts_with("--allow=clippy") => {}
                 _ if arg.starts_with("-Wclippy") => {}
+                _ if arg.starts_with("--warn=clippy") => {}
                 _ if arg.starts_with("-D") => {}
+                _ if arg.starts_with("--deny=") => {}
                 _ if arg.starts_with("-W") => {}
+                _ if arg.starts_with("--warn=") => {}
 
                 arg => bail!("unsupported rustc argument: {arg:?}"),
             }