--- a/rust/hg-core/src/errors.rs	Wed Jan 27 14:59:09 2021 +0100
+++ b/rust/hg-core/src/errors.rs	Wed Jan 27 14:45:25 2021 +0100
@@ -35,6 +35,9 @@
 
 impl HgError {
     pub fn corrupted(explanation: impl Into<String>) -> Self {
+        // TODO: capture a backtrace here and keep it in the error value
+        // to aid debugging?
+        // https://doc.rust-lang.org/std/backtrace/struct.Backtrace.html
         HgError::CorruptedRepository(explanation.into())
     }
 }