vagga.yaml: upgrade rust to 1.31.0

Author: tailhook

vagga.yaml

@@ -49,7 +49,7 @@ containers:
     - !Install [ca-certificates, build-essential, vim]
 
     - !TarInstall
-      url: "https://static.rust-lang.org/dist/rust-1.24.0-x86_64-unknown-linux-gnu.tar.gz"
+      url: "https://static.rust-lang.org/dist/rust-1.31.0-x86_64-unknown-linux-gnu.tar.gz"
       script: "./install.sh --prefix=/usr \
                --components=rustc,rust-std-x86_64-unknown-linux-gnu,cargo"
     - &bulk !Tar
@@ -70,7 +70,7 @@ containers:
     - !Install [ca-certificates, build-essential, vim]
 
     - !TarInstall
-      url: "https://static.rust-lang.org/dist/rust-1.24.0-i686-unknown-linux-gnu.tar.gz"
+      url: "https://static.rust-lang.org/dist/rust-1.31.0-i686-unknown-linux-gnu.tar.gz"
       script: "./install.sh --prefix=/usr \
                --components=rustc,rust-std-i686-unknown-linux-gnu,cargo"