bundles: Add a bound on b_file for debug convenience

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/src/bundles.rs b/src/bundles.rs
index f7d7a1c66803644b718da8ddfad5f8139ef9b82b..19cb5ae50cead4750a44d63f0f8e19d06ead5417 100644 (file)
--- a/src/bundles.rs
+++ b/src/bundles.rs
@@ -55,7 +55,7 @@ pub fn b_dir(instance: &InstanceName) -> String {
   savefilename(instance, "b-", "")
 }
 fn b_file<S>(instance: &InstanceName, index: Index, suffix: S) -> String
-where S: Display
+where S: Display + Debug
 {
   format!("{}/{:05}.{}",
           savefilename(instance, "b-", ""),