Improving the error message for when a patched dependency does not resolve to anything

diff --git a/src/cargo/core/registry.rs b/src/cargo/core/registry.rs
index 517486801d2107e4f66193c30794bcad7051b799..4ff031fdeaaa08a0c7e04c85c498a678e1af18bc 100644 (file)
--- a/src/cargo/core/registry.rs
+++ b/src/cargo/core/registry.rs
@@ -194,7 +194,8 @@ impl<'cfg> PackageRegistry<'cfg> {
             let summary = match summaries.next() {
                 Some(summary) => summary,
                 None => {
-                    bail!("patch for `{}` in `{}` did not resolve to any crates",
+                    bail!("patch for `{}` in `{}` did not resolve to any crates. Your patched \
+                           dependency may conflict with the version in Cargo.lock.",
                           dep.name(), url)
                 }
             };