Fix index override (#51)

* Fix index override

* Fix clippy lints

src/builder.rs

@@ -146,8 +146,8 @@ impl From<Cmd> for cm::MetadataCommand {
         let mut opts = Vec::with_capacity(
             cmd.features.len()
                 + cmd.other_options.len()
-                + if cmd.no_default_features { 1 } else { 0 }
-                + if cmd.all_features { 1 } else { 0 },
+                + usize::from(cmd.no_default_features)
+                + usize::from(cmd.all_features),
         );
 
         if cmd.no_default_features {
@@ -1491,7 +1491,11 @@ fn fix_features(index: &crates_index::Index, krate: &mut cm::Package) {
         });
 
         if let Some(features) = features {
-            krate.features = features.clone();
+            for (ikey, ivalue) in features {
+                if !krate.features.contains_key(ikey) {
+                    krate.features.insert(ikey.clone(), ivalue.clone());
+                }
+            }
 
             // The index entry features might not have the `dep:<crate>`
             // used with weak features if the crate version was

tests/bug/Cargo.toml

@@ -5,6 +5,7 @@ edition = "2021"
 
 [dependencies]
 conv = "=0.3.3"
+las = { version = "=0.7.7", features = ["laz"] }
 
 [dependencies.wasmtime]
 version = "2.0.0"

tests/kind.rs

@@ -141,7 +141,7 @@ fn filters_build_and_dev() {
 #[test]
 fn only_b() {
     let mut kb = krates::Builder::new();
-    kb.include_workspace_crates(&["/home/jake/code/krates/tests/ws/b/Cargo.toml"]);
+    kb.include_workspace_crates(["/home/jake/code/krates/tests/ws/b/Cargo.toml"]);
 
     let grafs = build("all-features.json", kb).unwrap();
     insta::assert_snapshot!(grafs.dotgraph());