diff --git a/src/main.rs b/src/main.rs
index 8c412be..26207f8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,18 +1,18 @@
 #[derive(Debug, thiserror::Error)]
 enum TciError {
-	#[error("could not understand file system structure, bailing out")]
+	#[error("could not understand file system structure, bailing out: {0}")]
 	FsError(&'static str),
 
 	#[error("missing tci script")]
 	MissingScript,
 
-	#[error("unexpected i/o error")]
+	#[error("unexpected i/o error: {0}")]
 	IoError(#[from] std::io::Error),
 
-	#[error("git error")]
+	#[error("git error: {0}")]
 	GitError(#[from] git2::Error),
 
-	#[error("subprocess finished with non-zero exit code")]
+	#[error("subprocess finished with non-zero exit code: {0}")]
 	SubprocessError(i32),
 
 	#[error("subprocess terminated")]