remove Error::is_runtime_startup accessor

src/error.rs

@@ -147,8 +147,7 @@ impl Error {
             Kind::TooManyRedirects |
             Kind::RedirectLoop |
             Kind::ClientError(_) |
-            Kind::ServerError(_) |
-            Kind::RuntimeStartupFailure => None,
+            Kind::ServerError(_) => None,
         }
     }
 
@@ -209,14 +208,6 @@ impl Error {
             _ => None,
         }
     }
-
-    /// Returns true if this error is due to a failure starting the runtime.
-    pub fn is_runtime_startup(&self) -> bool {
-        match self.inner.kind {
-            Kind::RuntimeStartupFailure => true,
-            _ => false,
-        }
-    }
 }
 
 impl fmt::Debug for Error {
@@ -259,7 +250,6 @@ impl fmt::Display for Error {
                 f.write_str("Server Error: ")?;
                 fmt::Display::fmt(code, f)
             }
-            Kind::RuntimeStartupFailure => f.write_str("Client runtime failed to start"),
         }
     }
 }
@@ -285,7 +275,6 @@ impl StdError for Error {
             Kind::RedirectLoop => "Infinite redirect loop",
             Kind::ClientError(_) => "Client Error",
             Kind::ServerError(_) => "Server Error",
-            Kind::RuntimeStartupFailure => "Client runtime failed to start",
         }
     }
 
@@ -309,8 +298,7 @@ impl StdError for Error {
             Kind::TooManyRedirects |
             Kind::RedirectLoop |
             Kind::ClientError(_) |
-            Kind::ServerError(_) |
-            Kind::RuntimeStartupFailure => None,
+            Kind::ServerError(_) => None,
         }
     }
 }
@@ -335,7 +323,6 @@ pub(crate) enum Kind {
     RedirectLoop,
     ClientError(StatusCode),
     ServerError(StatusCode),
-    RuntimeStartupFailure,
 }
 
 
@@ -502,10 +489,6 @@ pub(crate) fn url_bad_scheme(url: Url) -> Error {
     Error::new(Kind::UrlBadScheme, Some(url))
 }
 
-pub(crate) fn runtime_startup() -> Error {
-    Error::new(Kind::RuntimeStartupFailure, None)
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;