Enable Travis.

.travis.yml

@@ -0,0 +1,18 @@
+language: rust
+rust: nightly-2018-04-19
+cache: cargo
+before_install:
+  - rustup component add rustfmt-preview
+  # - cargo install clippy -f --vers=0.0.195
+env:
+  global:
+    - RUST_BACKTRACE=1
+    - RUSTFLAGS="-D warnings"
+  script:
+    - cargo fmt -- --write-mode=diff
+    # TODO: Enable Clippy once https://github.com/rust-lang/rust/issues/49643
+    #       has been resolved. Add tests.
+    # - cargo clippy -- -D clippy
+    # - cargo clippy --tests -- -D clippy
+    # - cargo check --tests
+    - cargo test

src/main.rs

@@ -128,9 +128,8 @@ fn count_votes(
                 .to_filter_builder()
                 .build();
             let vote_logs_filter = web3.eth_filter().create_logs_filter(vote_filter).wait()?;
-            let votes = vote_logs_filter
-                .logs()
-                .wait()?
+            let vote_logs = vote_logs_filter.logs().wait()?;
+            let votes = vote_logs
                 .into_iter()
                 .map(|vote_log| {
                     let vote = Vote::from_log(&vote_event.parse_log(vote_log.into_raw())?)?;