Update cargo, books.

ehuss · ehuss · commit 33591a7d57e1 · 2019-10-29T10:45:55.000-07:00
diff --git a/src/doc/book b/src/doc/book
@@ -1 +1 @@
-Subproject commit 9bb8b161963fcebc9d9ccd732ba26f42108016d5
+Subproject commit 28fa3d15b0bc67ea5e79eeff2198e4277fc61baf
diff --git a/src/doc/reference b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 5b9d2fcefadfc32fceafacfc0dd9441d9b57dd94
+Subproject commit 4b21b646669e0af49fae7cae301898dc4bfaa1f0
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
@@ -1 +1 @@
-Subproject commit 0b111eaae36cc4b4997684be853882a59e2c7ca7
+Subproject commit f3197ddf2abab9abdbc029def8164f4a748b0d91
diff --git a/src/tools/cargo b/src/tools/cargo
@@ -1 +1 @@
-Subproject commit 3ba5f27170db10af7a92f2b682e049397197b8fa
+Subproject commit 5da4b4d47963868d9878480197581ccbbdaece74
