Update gir version

rust-bindings/rust/sys/Cargo.toml

@@ -62,3 +62,6 @@ repository = "https://gitlab.com/fkrull/ostree-rs"
 version = "0.4.0"
 [package.metadata.docs.rs]
 features = ["dox"]
+
+["package.metadata.docs.rs"]
+features = ["dox", "v2019_2"]

rust-bindings/rust/sys/build.rs

@@ -2,14 +2,24 @@
 // from gir-files (https://github.com/gtk-rs/gir-files)
 // DO NOT EDIT
 
+#[cfg(not(feature = "dox"))]
 extern crate pkg_config;
 
+#[cfg(not(feature = "dox"))]
 use pkg_config::{Config, Error};
+#[cfg(not(feature = "dox"))]
 use std::env;
+#[cfg(not(feature = "dox"))]
 use std::io::prelude::*;
+#[cfg(not(feature = "dox"))]
 use std::io;
+#[cfg(not(feature = "dox"))]
 use std::process;
 
+#[cfg(feature = "dox")]
+fn main() {} // prevent linking libraries to avoid documentation failure
+
+#[cfg(not(feature = "dox"))]
 fn main() {
     if let Err(s) = find() {
         let _ = writeln!(io::stderr(), "{}", s);
@@ -17,6 +27,7 @@ fn main() {
     }
 }
 
+#[cfg(not(feature = "dox"))]
 fn find() -> Result<(), Error> {
     let package_name = "ostree-1";
     let shared_libs = ["ostree-1"];

rust-bindings/rust/sys/src/auto/versions.txt

@@ -1,2 +1,2 @@
-Generated by gir (https://github.com/gtk-rs/gir @ 20feecf)
+Generated by gir (https://github.com/gtk-rs/gir @ c0f523f)
 from gir-files (https://github.com/gtk-rs/gir-files @ ???)