keyprovider: Temporary fix for nightly builds

Do not autogenerate keyprovider.rs and patch it until
hyperium/tonic#892 is merged

Signed-off-by: Samuel Ortiz <s.ortiz@apple.com>

build.rs

@@ -4,9 +4,9 @@
 extern crate tonic_build;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
-    tonic_build::configure()
-        .build_server(true)
-        .out_dir("src/utils/")
-        .compile(&["src/utils/proto/keyprovider.proto"], &["src/utils"])?;
+    // tonic_build::configure()
+    //     .build_server(true)
+    //     .out_dir("src/utils/")
+    //     .compile(&["src/utils/proto/keyprovider.proto"], &["src/utils"])?;
     Ok(())
 }

src/utils/keyprovider.rs

@@ -59,11 +59,13 @@ pub mod key_provider_service_client {
         #[doc = r""]
         #[doc = r" This requires the server to support it otherwise it might respond with an"]
         #[doc = r" error."]
+        #[must_use]
         pub fn send_gzip(mut self) -> Self {
             self.inner = self.inner.send_gzip();
             self
         }
         #[doc = r" Enable decompressing responses with `gzip`."]
+        #[must_use]
         pub fn accept_gzip(mut self) -> Self {
             self.inner = self.inner.accept_gzip();
             self