Switch version to 1.40

Author: Mark-Simulacrum

src/bootstrap/channel.rs

@@ -13,7 +13,7 @@ use build_helper::output;
 use crate::Build;
 
 // The version number
-pub const CFG_RELEASE_NUM: &str = "1.39.0";
+pub const CFG_RELEASE_NUM: &str = "1.40.0";
 
 pub struct GitInfo {
     inner: Option<Info>,

src/stage0.txt

@@ -12,7 +12,7 @@
 # source tarball for a stable release you'll likely see `1.x.0` for rustc and
 # `0.x.0` for Cargo where they were released on `date`.
 
-date: 2019-08-13
+date: 2019-09-25
 rustc: beta
 cargo: beta