Upgrade rust/crates/unicode-width to 0.1.8

Test: make
Change-Id: Ife01eba76f417733a36c0bb17287300aa0864ad4
diff --git a/.cargo_vcs_info.json b/.cargo_vcs_info.json
index 9ec6bcb..f41bb5b 100644
--- a/.cargo_vcs_info.json
+++ b/.cargo_vcs_info.json
@@ -1,5 +1,5 @@
 {
   "git": {
-    "sha1": "3033826f8bf05e82724140a981d5941e48fce393"
+    "sha1": "d0aa541144151c09268878dd781f06011498389a"
   }
 }