diff --git a/src/formats.rs b/src/formats.rs
index 01db525..d73b80a 100644
--- a/src/formats.rs
+++ b/src/formats.rs
@@ -121,14 +121,13 @@ pub fn smart_write<W: Write>(f: &mut W, writeables: &[Writable]) -> io::Result<(
 }
 
 pub trait FormatSteps {
-	fn rename<W: Write>(&self, _f: &mut W, _from: &Path, _to: &Path) -> io::Result<()> { unreachable!() }
-	fn no_known_extension<W: Write>(&self, _f: &mut W, _path: &Path) -> io::Result<()> { unreachable!() }
-	fn unreadable<W: Write>(&self, _f: &mut W, _path: &Path) -> io::Result<()> { unreachable!() }
-	fn unknown_type<W: Write>(&self, _f: &mut W, _path: &Path) -> io::Result<()> { unreachable!() }
-	fn header<W: Write>(&self, _f: &mut W, _entries: &Entries) -> io::Result<()> { unreachable!() }
-	fn footer<W: Write>(&self, _f: &mut W, _entries: &Entries) -> io::Result<()> { unreachable!() }
+	fn rename<W: Write>(&self, _f: &mut W, _from: &Path, _to: &Path) -> io::Result<()>;
+	fn no_known_extension<W: Write>(&self, _f: &mut W, _path: &Path) -> io::Result<()> ;
+	fn unreadable<W: Write>(&self, _f: &mut W, _path: &Path) -> io::Result<()>;
+	fn unknown_type<W: Write>(&self, _f: &mut W, _path: &Path) -> io::Result<()>;
+	fn header<W: Write>(&self, _f: &mut W, _entries: &Entries) -> io::Result<()>;
+	fn footer<W: Write>(&self, _f: &mut W, _entries: &Entries) -> io::Result<()>;
 	fn write_steps<W: Write>(&self, f: &mut W, entries: &Entries) -> io::Result<()> {
-		// TODO: clean this up - it's kinda messy
 		self.header(f, entries)?;
 
 		// output will be generated in the order: