fix: add log::debug macro and remove unused imports

src/modes/diff.rs

@@ -1,9 +1,9 @@
 use crate::compression::CompressionType;
-use crate::modes::common::{format_size, ColumnType};
+use crate::modes::common::format_size;
 use std::path::PathBuf;
 use std::str::FromStr;
 
-use anyhow::{anyhow, Error, Result};
+use anyhow::{anyhow, Result};
 use clap::Command;
 use nix::fcntl::FdFlag;
 use nix::unistd::{close, pipe};
@@ -22,7 +22,7 @@ pub fn mode_diff(
 ) -> Result<()> {
     if !tags.is_empty() {
         cmd.error(
-            ErrorKind::InvalidValue,
+            clap::error::ErrorKind::InvalidValue,
             "Tags are not supported with --diff. Please provide exactly two IDs.",
         )
         .exit();

src/modes/mod.rs

@@ -7,4 +7,3 @@ pub mod list;
 pub mod save;
 pub mod status;
 pub mod update;
-use crate::modes::diff::mode_diff;