lib.rs: Replace top-level `unwrap()`s with `Result`s

Add a new `Error` type that we can return in the failure case. Still
need to work out how to handle errors inside the diff callback.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main.rs b/src/main.rs
index 48e8f5d..f743256 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,5 +9,5 @@ fn main() {
     let repo = Repository::open(".").unwrap();
 
     let todos = Todos { repo: &repo };
-    todos.write_since(todos.master_tree(), &mut std::io::stdout());
+    todos.write_since(todos.master_tree().unwrap(), &mut std::io::stdout()).unwrap();
 }