fix: add fix for bug, fix test name

Author: kristof-mattei

clippy_lints/src/cargo/multiple_crate_versions.rs

@@ -16,7 +16,7 @@ pub(super) fn check(cx: &LateContext<'_>, metadata: &Metadata) {
 
     if let Some(resolve) = &metadata.resolve
         && let Some(local_id) = packages.iter().find_map(|p| {
-            if p.name == local_name.as_str() {
+            if p.name.replace('-', "_") == local_name.as_str() {
                 Some(&p.id)
             } else {
                 None

tests/ui-cargo/multiple_crate_versions/12145_with_dashes/Cargo.stderr

@@ -3,4 +3,4 @@ error: multiple versions for dependency `winapi`: 0.2.8, 0.3.9
   = note: `-D clippy::multiple-crate-versions` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::multiple_crate_versions)]`
 
-error: could not compile `multiple-crate-versions-with-dashes` (bin "multiple-crate-versions-with-dashes") due to 1 previous error
+error: could not compile `multiple-crate-versions` (bin "multiple-crate-versions") due to 1 previous error

tests/ui-cargo/multiple_crate_versions/12145_with_dashes/Cargo.toml

@@ -1,7 +1,8 @@
 # Should not lint for dev or build dependencies. See issue 5041.
 
 [package]
-name = "multiple-crate-versions-with-dashes"
+# purposefully separated by - instead of _
+name = "multiple-crate-versions"
 version = "0.1.0"
 publish = false