vagga.yaml: upgrade rust to 1.31

Author: tailhook

vagga.yaml

@@ -23,12 +23,12 @@ containers:
     - !Install [ca-certificates, build-essential, vim]
 
     - !TarInstall
-      url: "https://static.rust-lang.org/dist/rust-1.16.0-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
-      url: "https://github.com/tailhook/bulk/releases/download/v0.4.9/bulk-v0.4.9.tar.gz"
-      sha256: 23471a9986274bb4b7098c03e2eb7e1204171869b72c45385fcee1c64db2d111
+      url: "https://github.com/tailhook/bulk/releases/download/v0.4.10/bulk-v0.4.10.tar.gz"
+      sha256: 481513f8a0306a9857d045497fb5b50b50a51e9ff748909ecf7d2bda1de275ab
       path: /
 
     environ: