Don't remember what this was supposed to be

src/cli.rs

@@ -28,9 +28,9 @@ pub enum Mode {
     C,
 }
 
-impl Into<clap::builder::OsStr> for Mode {
-    fn into(self) -> clap::builder::OsStr {
-        match self {
+impl From<Mode> for clap::builder::OsStr {
+    fn from(val: Mode) -> Self {
+        match val {
             Mode::X => clap::builder::OsStr::from("x"),
             Mode::C => clap::builder::OsStr::from("c"),
         }