Merge #2920

2920: Better handle illformed node id from metadata r=matklad a=edwin0cheng

In some rare cases, deps node-id from cargo-metadata do not match its version-id, which cause a panic in `cargo-workspace.rs`. This PR try to ignore these ill-formed node id from `cargo-metadata`. An alternative is return  `Err` in these cases but I think make it resilience is a better choice here.

Related #2767

Co-authored-by: Edwin Cheng <[email protected]>

Author: bors[bot]

crates/ra_project_model/src/cargo_workspace.rs

@@ -207,9 +207,25 @@ impl CargoWorkspace {
         }
         let resolve = meta.resolve.expect("metadata executed with deps");
         for node in resolve.nodes {
-            let source = pkg_by_id[&node.id];
+            let source = match pkg_by_id.get(&node.id) {
+                Some(&src) => src,
+                None => {
+                    log::error!("Node id do not match in cargo metadata, ignoring {}", node.id);
+                    continue;
+                }
+            };
             for dep_node in node.deps {
-                let dep = PackageDependency { name: dep_node.name, pkg: pkg_by_id[&dep_node.pkg] };
+                let pkg = match pkg_by_id.get(&dep_node.pkg) {
+                    Some(&pkg) => pkg,
+                    None => {
+                        log::error!(
+                            "Dep node id do not match in cargo metadata, ignoring {}",
+                            dep_node.pkg
+                        );
+                        continue;
+                    }
+                };
+                let dep = PackageDependency { name: dep_node.name, pkg };
                 packages[source].dependencies.push(dep);
             }
             packages[source].features.extend(node.features);