Add lifetime parameters to Parsed and Resolved

Future-proofing

1 files changed, 2 insertions, 1 deletions

diff --git a/dhall/src/tests.rs b/dhall/src/tests.rs
index 798f3e9..14c2a5f 100644
--- a/dhall/src/tests.rs
+++ b/dhall/src/tests.rs
@@ -99,7 +99,8 @@ pub fn run_test(
                 assert_eq_pretty!(expr, expected);
 
                 // Round-trip pretty-printer
-                let expr: Parsed = crate::from_str(&expr.to_string(), None)?;
+                let expr_string = expr.to_string();
+                let expr: Parsed = crate::from_str(&expr_string, None)?;
                 assert_eq!(expr, expected);
 
                 return Ok(());