diff --git a/src/librustc_save_analysis/Cargo.toml b/src/librustc_save_analysis/Cargo.toml
index 12897050164c..a01659f3d46b 100644
--- a/src/librustc_save_analysis/Cargo.toml
+++ b/src/librustc_save_analysis/Cargo.toml
@@ -15,7 +15,7 @@ rustc_data_structures = { path = "../librustc_data_structures" }
 rustc_typeck = { path = "../librustc_typeck" }
 syntax = { path = "../libsyntax" }
 syntax_pos = { path = "../libsyntax_pos" }
-rls-data = "0.11"
+rls-data = { git = "https://github.com/Xanewok/rls-data", branch = "crate-source" }
 rls-span = "0.4"
 # FIXME(#40527) should move rustc serialize out of tree
 rustc-serialize = "0.3"
diff --git a/src/librustc_save_analysis/dump_visitor.rs b/src/librustc_save_analysis/dump_visitor.rs
index ca44a088e237..13787dbadd04 100644
--- a/src/librustc_save_analysis/dump_visitor.rs
+++ b/src/librustc_save_analysis/dump_visitor.rs
@@ -46,8 +46,8 @@ use json_dumper::{JsonDumper, DumpOutput};
 use span_utils::SpanUtils;
 use sig;
 
-use rls_data::{CratePreludeData, Import, ImportKind, SpanData, Ref, RefKind,
-               Def, DefKind, Relation, RelationKind};
+use rls_data::{CratePreludeData, GlobalCrateId, Import, ImportKind, SpanData,
+               Ref, RefKind, Def, DefKind, Relation, RelationKind};
 
 macro_rules! down_cast_data {
     ($id:ident, $kind:ident, $sp:expr) => {
@@ -131,7 +131,10 @@ impl<'l, 'tcx: 'l, 'll, O: DumpOutput + 'll> DumpVisitor<'l, 'tcx, 'll, O> {
         });
 
         let data = CratePreludeData {
-            crate_name: name.into(),
+            crate_id: GlobalCrateId {
+                name: name.into(),
+                disambiguator: self.tcx.sess.local_crate_disambiguator().to_string(),
+            },
             crate_root: crate_root.unwrap_or("<no source>".to_owned()),
             external_crates: self.save_ctxt.get_external_crates(),
             span: self.span_from_span(krate.span),
diff --git a/src/librustc_save_analysis/lib.rs b/src/librustc_save_analysis/lib.rs
index 1c6007966afa..886679f77d73 100644
--- a/src/librustc_save_analysis/lib.rs
+++ b/src/librustc_save_analysis/lib.rs
@@ -63,7 +63,7 @@ use dump_visitor::DumpVisitor;
 use span_utils::SpanUtils;
 
 use rls_data::{Ref, RefKind, SpanData, MacroRef, Def, DefKind, Relation, RelationKind,
-               ExternalCrateData};
+               ExternalCrateData, GlobalCrateId};
 use rls_data::config::Config;
 
 
@@ -82,10 +82,6 @@ pub enum Data {
     RelationData(Relation),
 }
 
-macro_rules! option_try(
-    ($e:expr) => (match $e { Some(e) => e, None => return None })
-);
-
 impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
     fn span_from_span(&self, span: Span) -> SpanData {
         use rls_span::{Row, Column};
@@ -119,9 +115,12 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
             };
             let lo_loc = self.span_utils.sess.codemap().lookup_char_pos(span.lo());
             result.push(ExternalCrateData {
-                name: self.tcx.crate_name(n).to_string(),
-                num: n.as_u32(),
                 file_name: SpanUtils::make_path_string(&lo_loc.file.name),
+                num: n.as_u32(),
+                id: GlobalCrateId {
+                    name: self.tcx.crate_name(n).to_string(),
+                    disambiguator: self.tcx.crate_disambiguator(n).to_string(),
+                },
             });
         }
 
@@ -725,8 +724,8 @@ impl<'l, 'tcx: 'l> SaveContext<'l, 'tcx> {
         // macro uses.
         let callsite = span.source_callsite();
         let callsite_span = self.span_from_span(callsite);
-        let callee = option_try!(span.source_callee());
-        let callee_span = option_try!(callee.span);
+        let callee = span.source_callee()?;
+        let callee_span = callee.span?;
 
         // Ignore attribute macros, their spans are usually mangled
         if let MacroAttribute(_) = callee.format {