1 files changed, 9 insertions, 2 deletions

diff --git a/crates/ide/src/runnables.rs b/crates/ide/src/runnables.rs
index 5b488e2c5..3eb9e27ee 100644
--- a/crates/ide/src/runnables.rs
+++ b/crates/ide/src/runnables.rs
@@ -98,6 +98,7 @@ impl Runnable {
 //
 // | VS Code | **Rust Analyzer: Run**
 // |===
+// image::https://user-images.githubusercontent.com/48062697/113065583-055aae80-91b1-11eb-958f-d67efcaf6a2f.gif[]
 pub(crate) fn runnables(db: &RootDatabase, file_id: FileId) -> Vec<Runnable> {
     let sema = Semantics::new(db);
 
@@ -226,7 +227,9 @@ pub(crate) fn runnable_fn(sema: &Semantics<RootDatabase>, def: hir::Function) ->
     let func = def.source(sema.db)?;
     let name_string = def.name(sema.db).to_string();
 
-    let kind = if name_string == "main" {
+    let root = def.krate(sema.db)?.root_module(sema.db);
+
+    let kind = if name_string == "main" && def.module(sema.db) == root {
         RunnableKind::Bin
     } else {
         let canonical_path = {
@@ -296,7 +299,7 @@ fn module_def_doctest(sema: &Semantics<RootDatabase>, def: hir::ModuleDef) -> Op
             // FIXME: this also looks very wrong
             if let Some(assoc_def) = assoc_def {
                 if let hir::AssocItemContainer::Impl(imp) = assoc_def.container(sema.db) {
-                    let ty = imp.target_ty(sema.db);
+                    let ty = imp.self_ty(sema.db);
                     if let Some(adt) = ty.as_adt() {
                         let name = adt.name(sema.db);
                         let idx = path.rfind(':').map_or(0, |idx| idx + 1);
@@ -444,6 +447,10 @@ fn test_foo() {}
 
 #[bench]
 fn bench() {}
+
+mod not_a_root {
+    fn main() {}
+}
 "#,
             &[&BIN, &TEST, &TEST, &BENCH],
             expect![[r#"