Fix error-chain warnings

Mark-Simulacrum · Mark-Simulacrum · commit 1deeba8aa19b · 2018-06-20T19:52:07.000-06:00
diff --git a/src/tools/rust-installer b/src/tools/rust-installer
@@ -1 +1 @@
-Subproject commit 118e078c5badd520d18b92813fd88789c8d341ab
+Subproject commit 89414e44dc94844888e59c08bc31dcccb1792800
