Lambda with Async/Await (#111)

Author: David Barsky

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
           - ubuntu-latest
           - macOS-latest
         rust:
-          - 1.31.0
+          - 1.40.0
           - stable
           - beta
           - nightly
@@ -26,7 +26,7 @@ jobs:
           - os: macOS-latest
             target: x86_64-unknown-linux-musl
           - os: ubuntu-latest
-            rust: 1.31.0
+            rust: 1.40.0
             target: x86_64-unknown-linux-musl
           - os: ubuntu-latest
             rust: beta
@@ -35,7 +35,7 @@ jobs:
             rust: nightly
             target: x86_64-unknown-linux-musl
           - os: macOS-latest
-            rust: 1.31.0
+            rust: 1.40.0
           - os: macOS-latest
             rust: beta
           - os: macOS-latest
@@ -68,4 +68,4 @@ jobs:
           components: rustfmt
           override: true
       - name: Run fmt check
-        run: cargo fmt --all -- --check
+        run: cargo fmt --all -- --check

.rustfmt.toml

@@ -1,3 +1,4 @@
+edition = "2018"
 # https://github.com/rust-lang/rustfmt/blob/master/Configurations.md#merge_imports
 merge_imports = true
 # https://github.com/rust-lang/rustfmt/blob/master/Configurations.md#max_width