chore: run clippy and cargo fmt on pending changes

engine/src/core/panic.rs

@@ -1,9 +1,6 @@
-use std::fmt::Write as FmtWrite;
-use std::mem;
 use std::str::FromStr;
 use std::{error::Error, path::PathBuf};
 
-use backtrace::Backtrace;
 use native_dialog::{MessageDialog, MessageType};
 use parking_lot::Once;
 use tracing::error;