--- a/rust/rhg/src/error.rs	Tue Jan 26 18:31:46 2021 +0100
+++ b/rust/rhg/src/error.rs	Tue Jan 26 19:07:24 2021 +0100
@@ -1,7 +1,7 @@
 use crate::exitcode;
 use crate::ui::UiError;
 use format_bytes::format_bytes;
-use hg::operations::{FindRootError, FindRootErrorKind};
+use hg::operations::FindRootError;
 use hg::requirements::RequirementsError;
 use hg::utils::files::get_bytes_from_path;
 use std::convert::From;
@@ -9,7 +9,7 @@
 
 /// The kind of command error
 #[derive(Debug)]
-pub enum CommandErrorKind {
+pub enum CommandError {
     /// The root of the repository cannot be found
     RootNotFound(PathBuf),
     /// The current directory cannot be found
@@ -26,99 +26,76 @@
     Unimplemented,
 }
 
-impl CommandErrorKind {
+impl CommandError {
     pub fn get_exit_code(&self) -> exitcode::ExitCode {
         match self {
-            CommandErrorKind::RootNotFound(_) => exitcode::ABORT,
-            CommandErrorKind::CurrentDirNotFound(_) => exitcode::ABORT,
-            CommandErrorKind::RequirementsError(
+            CommandError::RootNotFound(_) => exitcode::ABORT,
+            CommandError::CurrentDirNotFound(_) => exitcode::ABORT,
+            CommandError::RequirementsError(
                 RequirementsError::Unsupported { .. },
             ) => exitcode::UNIMPLEMENTED_COMMAND,
-            CommandErrorKind::RequirementsError(_) => exitcode::ABORT,
-            CommandErrorKind::StdoutError => exitcode::ABORT,
-            CommandErrorKind::StderrError => exitcode::ABORT,
-            CommandErrorKind::Abort(_) => exitcode::ABORT,
-            CommandErrorKind::Unimplemented => exitcode::UNIMPLEMENTED_COMMAND,
+            CommandError::RequirementsError(_) => exitcode::ABORT,
+            CommandError::StdoutError => exitcode::ABORT,
+            CommandError::StderrError => exitcode::ABORT,
+            CommandError::Abort(_) => exitcode::ABORT,
+            CommandError::Unimplemented => exitcode::UNIMPLEMENTED_COMMAND,
         }
     }
 
-    /// Return the message corresponding to the error kind if any
+    /// Return the message corresponding to the error if any
     pub fn get_error_message_bytes(&self) -> Option<Vec<u8>> {
         match self {
-            CommandErrorKind::RootNotFound(path) => {
+            CommandError::RootNotFound(path) => {
                 let bytes = get_bytes_from_path(path);
                 Some(format_bytes!(
                     b"abort: no repository found in '{}' (.hg not found)!\n",
                     bytes.as_slice()
                 ))
             }
-            CommandErrorKind::CurrentDirNotFound(e) => Some(format_bytes!(
+            CommandError::CurrentDirNotFound(e) => Some(format_bytes!(
                 b"abort: error getting current working directory: {}\n",
                 e.to_string().as_bytes(),
             )),
-            CommandErrorKind::RequirementsError(
-                RequirementsError::Corrupted,
-            ) => Some(
-                "abort: .hg/requires is corrupted\n".as_bytes().to_owned(),
-            ),
-            CommandErrorKind::Abort(message) => message.to_owned(),
+            CommandError::RequirementsError(RequirementsError::Corrupted) => {
+                Some(
+                    "abort: .hg/requires is corrupted\n".as_bytes().to_owned(),
+                )
+            }
+            CommandError::Abort(message) => message.to_owned(),
             _ => None,
         }
     }
-}
 
-/// The error type for the Command trait
-#[derive(Debug)]
-pub struct CommandError {
-    pub kind: CommandErrorKind,
-}
-
-impl CommandError {
     /// Exist the process with the corresponding exit code.
     pub fn exit(&self) {
-        std::process::exit(self.kind.get_exit_code())
-    }
-
-    /// Return the message corresponding to the command error if any
-    pub fn get_error_message_bytes(&self) -> Option<Vec<u8>> {
-        self.kind.get_error_message_bytes()
-    }
-}
-
-impl From<CommandErrorKind> for CommandError {
-    fn from(kind: CommandErrorKind) -> Self {
-        CommandError { kind }
+        std::process::exit(self.get_exit_code())
     }
 }
 
 impl From<UiError> for CommandError {
     fn from(error: UiError) -> Self {
-        CommandError {
-            kind: match error {
-                UiError::StdoutError(_) => CommandErrorKind::StdoutError,
-                UiError::StderrError(_) => CommandErrorKind::StderrError,
-            },
+        match error {
+            UiError::StdoutError(_) => CommandError::StdoutError,
+            UiError::StderrError(_) => CommandError::StderrError,
         }
     }
 }
 
 impl From<FindRootError> for CommandError {
     fn from(err: FindRootError) -> Self {
-        match err.kind {
-            FindRootErrorKind::RootNotFound(path) => CommandError {
-                kind: CommandErrorKind::RootNotFound(path),
-            },
-            FindRootErrorKind::GetCurrentDirError(e) => CommandError {
-                kind: CommandErrorKind::CurrentDirNotFound(e),
-            },
+        match err {
+            FindRootError::RootNotFound(path) => {
+                CommandError::RootNotFound(path)
+            }
+            FindRootError::GetCurrentDirError(e) => {
+                CommandError::CurrentDirNotFound(e)
+            }
         }
     }
 }
 
 impl From<RequirementsError> for CommandError {
     fn from(err: RequirementsError) -> Self {
-        CommandError {
-            kind: CommandErrorKind::RequirementsError(err),
-        }
+        CommandError::RequirementsError(err)
     }
 }