rustbuild: Fix tests

Use the same step names as the actual build.

src/bootstrap/step.rs

@@ -1217,31 +1217,31 @@ mod tests {
             name: "std".to_string(),
             deps: Vec::new(),
             path: cwd.join("src/std"),
-            doc_step: "doc-std".to_string(),
+            doc_step: "doc-crate-std".to_string(),
             build_step: "build-crate-std".to_string(),
-            test_step: "test-std".to_string(),
-            bench_step: "bench-std".to_string(),
+            test_step: "test-crate-std".to_string(),
+            bench_step: "bench-crate-std".to_string(),
             version: String::new(),
         });
         build.crates.insert("test".to_string(), ::Crate {
             name: "test".to_string(),
             deps: Vec::new(),
             path: cwd.join("src/test"),
-            doc_step: "doc-test".to_string(),
+            doc_step: "doc-crate-test".to_string(),
             build_step: "build-crate-test".to_string(),
-            test_step: "test-test".to_string(),
-            bench_step: "bench-test".to_string(),
+            test_step: "test-crate-test".to_string(),
+            bench_step: "bench-crate-test".to_string(),
             version: String::new(),
         });
         build.crates.insert("rustc-main".to_string(), ::Crate {
             name: "rustc-main".to_string(),
             deps: Vec::new(),
             version: String::new(),
             path: cwd.join("src/rustc-main"),
-            doc_step: "doc-rustc-main".to_string(),
+            doc_step: "doc-crate-rustc-main".to_string(),
             build_step: "build-crate-rustc-main".to_string(),
-            test_step: "test-rustc-main".to_string(),
-            bench_step: "bench-rustc-main".to_string(),
+            test_step: "test-crate-rustc-main".to_string(),
+            bench_step: "bench-crate-rustc-main".to_string(),
         });
         return build
     }