Fix mocks/ensures tests pass, upgrades to master Substrate 2.0 (#66)

Author: drewstone

.travis.yml

@@ -20,11 +20,11 @@ jobs:
   include:
   - stage: Test and build
     name: Run runtime tests
-    script: RUST_TOOLCHAIN=nightly-2020-02-17 TARGET=runtime-test ./scripts/ci.sh
+    script: RUST_TOOLCHAIN=nightly-2020-10-06 TARGET=runtime-test ./scripts/ci.sh
   - name: Build (WASM and native)
-    script: RUST_TOOLCHAIN=nightly-2020-02-17 TARGET=build ./scripts/ci.sh
+    script: RUST_TOOLCHAIN=nightly-2020-10-06 TARGET=build ./scripts/ci.sh
   - name: Cargo fmt
-    script: RUST_TOOLCHAIN=nightly-2020-02-17 TARGET=fmt ./scripts/ci.sh
+    script: RUST_TOOLCHAIN=nightly-2020-10-06 TARGET=fmt ./scripts/ci.sh
 
 addons:
   apt: