fix(publish): Actually properly update Index

I meant to implement this before reovign the sleep but it fell through
the cracks.

Fixes crate-ci#224

src/cargo.rs

@@ -111,10 +111,11 @@ pub fn wait_for_publish(
     if !dry_run {
         let now = std::time::Instant::now();
         let sleep_time = std::time::Duration::from_secs(1);
-        let index = crates_index::Index::new_cargo_default();
+        let index = crates_index::BareIndex::new_cargo_default();
+        let mut index = index.open_or_clone()?;
         let mut logged = false;
         loop {
-            if let Err(e) = index.update() {
+            if let Err(e) = index.retrieve() {
                 log::debug!("Crate index update failed with {}", e);
             }
             let crate_data = index.crate_(name);

src/error.rs

@@ -63,6 +63,11 @@ quick_error! {
             source(err)
             display("FromUtf8Error {}", err)
         }
+        IndexError(err: crates_index::Error) {
+            from()
+            source(err)
+            display("{}", err)
+        }
         NoPackage {
             display("No package in manifest file")
         }