1 files changed, 3 insertions, 1 deletions

diff --git a/crates/ra_hir/src/mock.rs b/crates/ra_hir/src/mock.rs
index 0fae7de82..7a0301648 100644
--- a/crates/ra_hir/src/mock.rs
+++ b/crates/ra_hir/src/mock.rs
@@ -1,4 +1,4 @@
-use std::sync::Arc;
+use std::{sync::Arc, panic};
 
 use parking_lot::Mutex;
 use salsa::{self, Database};
@@ -18,6 +18,8 @@ pub(crate) struct MockDatabase {
     file_counter: u32,
 }
 
+impl panic::RefUnwindSafe for MockDatabase {}
+
 impl MockDatabase {
     pub(crate) fn with_files(fixture: &str) -> (MockDatabase, SourceRoot) {
         let (db, source_root, position) = MockDatabase::from_fixture(fixture);