message: chore: hide the AnyError since it's only an internal type
diff: @@ -12,7 +12,7 @@ pub use internal::{InternalError, InternalErrorKind, OtherError, SilentError};
  use prelude::*;
  /// A wrapper around a dynamic error type.
  -#[derive(Debug, Clone)]
  +#[derive(Clone)]
  pub struct AnyError(Arc<anyhow::Error>);
  /// TODO(doc): @keroro520
  @@ -62,3 +62,9 @@ impl fmt::Display for AnyError {
  self.0.fmt(f)
  }
  }
  +
  +impl fmt::Debug for AnyError {
  + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  + self.0.fmt(f)
  + }
  +}
  