Fix build for Rust 1.26
@@ -139,7 +139,7 @@ pub fn list_themes(assets: &HighlightingAssets, cfg: &Config) {
config.files = vec![Some("assets/theme_preview.rs")];
config.output_components = OutputComponents(style);
for (theme, _) in themes.iter() {
- println!("{}\n", Style::new().bold().paint(theme));
+ println!("{}\n", Style::new().bold().paint(theme.to_string()));
config.theme = theme.to_string();
let _controller = Controller::new(&config, &assets).run();
println!("--------------------------------\n");
