style: use Path::display() when printing a path (#1150)

prost-build/src/config.rs

@@ -836,7 +836,7 @@ impl Config {
 
         if let Some(ref include_file) = self.include_file {
             let path = target.join(include_file);
-            trace!("Writing include file: {:?}", path);
+            trace!("Writing include file: {}", path.display());
             let mut buffer = Vec::new();
             self.write_line(&mut buffer, 0, "// This file is @generated by prost-build.")?;
             self.write_includes(
@@ -943,7 +943,7 @@ impl Config {
             )),
             Err(err) => return Err(Error::new(
                 err.kind(),
-                format!("failed to invoke protoc (hint: https://docs.rs/prost-build/#sourcing-protoc): (path: {:?}): {}", &self.protoc_executable, err),
+                format!("failed to invoke protoc (hint: https://docs.rs/prost-build/#sourcing-protoc): (path: {}): {}", &self.protoc_executable.display(), err),
             )),
             Ok(output) => output,
         };
@@ -960,8 +960,9 @@ impl Config {
             Error::new(
                 e.kind(),
                 format!(
-                    "unable to open file_descriptor_set_path: {:?}, OS: {}",
-                    &file_descriptor_set_path, e
+                    "unable to open file_descriptor_set_path: {}, OS: {}",
+                    file_descriptor_set_path.display(),
+                    e
                 ),
             )
         })?;
@@ -1140,10 +1141,10 @@ fn write_file_if_changed(path: &Path, content: &[u8]) -> std::io::Result<()> {
         .map(|previous_content| previous_content == content)
         .unwrap_or(false)
     {
-        trace!("unchanged: {:?}", path);
+        trace!("unchanged: {}", path.display());
         Ok(())
     } else {
-        trace!("writing: {:?}", path);
+        trace!("writing: {}", path.display());
         fs::write(path, content)
     }
 }
@@ -1236,14 +1237,14 @@ pub fn protoc_include_from_env() -> Option<PathBuf> {
 
     if !protoc_include.exists() {
         panic!(
-            "PROTOC_INCLUDE environment variable points to non-existent directory ({:?})",
-            protoc_include
+            "PROTOC_INCLUDE environment variable points to non-existent directory ({})",
+            protoc_include.display()
         );
     }
     if !protoc_include.is_dir() {
         panic!(
-            "PROTOC_INCLUDE environment variable points to a non-directory file ({:?})",
-            protoc_include
+            "PROTOC_INCLUDE environment variable points to a non-directory file ({})",
+            protoc_include.display()
         );
     }