Merge branch 'maint-0.3.3' into maint-0.3.4

changes/bug29244

+  o Minor bugfixes (build, compatibility):
+    - Update Cargo.lock file to match the version made by the latest
+      version of Rust, so that "make distcheck" will pass again.
+      Fixes bug 29244; bugfix on 0.3.3.4-alpha.

src/rust/Cargo.lock

+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
 [[package]]
 name = "crypto"
 version = "0.0.1"