Auto merge of rust-lang#45949 - Mark-Simulacrum:cargo-next, r=alexcrichton

bors · bors · commit 783c6ec55d9d · 2017-11-13T01:53:12.000Z
Bump cargo to master Includes a few bugfixes, and updates the Cargo book. Critically includes rust-lang/cargo#4716. This unblocks (in theory) crater runs.
diff --git a/src/tools/cargo b/src/tools/cargo
@@ -1 +1 @@
-Subproject commit b83550edc300e3d80dd16d0440123ffc1ad77bb9
+Subproject commit abd137ad14a8f352b48f24b11c3995d716deb260
