--- a/crates/ide_db/src/helpers.rs
+++ b/crates/ide_db/src/helpers.rs
@@ -309,7 +309,7 @@ pub fn lint_eq_or_in_group(lint: &str, lint_is: &str) -> bool {
 pub fn parse_tt_as_comma_sep_paths(input: ast::TokenTree) -> Option<Vec<ast::Path>> {
     let r_paren = input.r_paren_token();
     let tokens =
-        input.syntax().children_with_tokens().skip(1).map_while(|it| match it.into_token() {
+        input.syntax().children_with_tokens().skip(1).map(|it| match it.into_token() {
             // seeing a keyword means the attribute is unclosed so stop parsing here
             Some(tok) if tok.kind().is_keyword() => None,
             // don't include the right token tree parenthesis if it exists
@@ -317,7 +317,7 @@ pub fn parse_tt_as_comma_sep_paths(input: ast::TokenTree) -> Option<Vec<ast::Pat
             // only nodes that we can find are other TokenTrees, those are unexpected in this parse though
             None => None,
             Some(tok) => Some(tok),
-        });
+        }).take_while(|tok| tok.is_some()).map(|tok| tok.unwrap());
     let input_expressions = tokens.into_iter().group_by(|tok| tok.kind() == T![,]);
     let paths = input_expressions
         .into_iter()