fix(source): Don't warn about unreferenced duplicate packages

Fixes #10752

Author: epage

src/cargo/sources/path.rs

@@ -323,6 +323,7 @@ impl<'gctx> Source for RecursivePathSource<'gctx> {
         for s in self
             .packages
             .iter()
+            .filter(|(pkg_id, _)| pkg_id.name() == dep.package_name())
             .map(|(pkg_id, pkgs)| {
                 first_package(*pkg_id, pkgs, &mut self.warned_duplicate, self.gctx)
             })

tests/testsuite/git.rs

@@ -1284,10 +1284,6 @@ expected `.`, `]`
 2 |                     [package
   |                             ^
   |
-[WARNING] skipping duplicate package `duplicate v0.5.0 ([ROOTURL]/dep#[..])`:
-  [ROOT]/home/.cargo/git/checkouts/dep-[HASH]/[..]/duplicate2/Cargo.toml
-in favor of [ROOT]/home/.cargo/git/checkouts/dep-[HASH]/[..]/duplicate1/Cargo.toml
-
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [ELAPSED]s
 [RUNNING] `target/debug/foo[EXE]`