diff --git a/.travis.yml b/.travis.yml
index 6233ea68b2..70b9d21333 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,12 +6,13 @@ before_install:
   - sudo mv protoc3/include/* /usr/local/include/
   - sudo chown $USER /usr/local/bin/protoc
   - sudo chown -R $USER /usr/local/include/google
+env:
+  - BUILD=--all
+  - BUILD=--release --all
+  - BUILD= --manifest-path eth2/state_processing/Cargo.toml --release --features fake_crypto
 script:
-  - cargo build --verbose --all
-  - cargo build --verbose --release --all
-  - cargo test --verbose --all
-  - cargo test --verbose --release --all
-  - cargo test --manifest-path eth2/state_processing/Cargo.toml --verbose --release --features fake_crypto
+  - cargo build --verbose $BUILD
+  - cargo test --verbose $BUILD
   - cargo fmt --all -- --check
   # No clippy until later...
   #- cargo clippy
@@ -23,6 +24,15 @@ matrix:
   allow_failures:
     - rust: nightly
   fast_finish: true
+  exclude:
+      - rust: beta
+        env: BUILD=--release --all
+      - rust: beta
+        env: BUILD= --manifest-path eth2/state_processing/Cargo.toml --release --features fake_crypto
+      - rust: nightly
+        env: BUILD=--release --all
+      - rust: nightly
+        env: BUILD= --manifest-path eth2/state_processing/Cargo.toml --release --features fake_crypto
 install:
   - rustup component add rustfmt
   - rustup component add clippy
diff --git a/beacon_node/beacon_chain/test_harness/tests/chain.rs b/beacon_node/beacon_chain/test_harness/tests/chain.rs
index e72c3a5aa5..d47de6889a 100644
--- a/beacon_node/beacon_chain/test_harness/tests/chain.rs
+++ b/beacon_node/beacon_chain/test_harness/tests/chain.rs
@@ -1,3 +1,5 @@
+#![cfg(not(debug_assertions))]
+
 use env_logger::{Builder, Env};
 use log::debug;
 use test_harness::BeaconChainHarness;
diff --git a/eth2/fork_choice/tests/tests.rs b/eth2/fork_choice/tests/tests.rs
index 3ce63eeb77..fb530ac434 100644
--- a/eth2/fork_choice/tests/tests.rs
+++ b/eth2/fork_choice/tests/tests.rs
@@ -1,3 +1,4 @@
+#![cfg(not(debug_assertions))]
 // Tests the available fork-choice algorithms
 
 extern crate beacon_chain;
diff --git a/eth2/state_processing/tests/tests.rs b/eth2/state_processing/tests/tests.rs
index dd611b4590..e80340e9a4 100644
--- a/eth2/state_processing/tests/tests.rs
+++ b/eth2/state_processing/tests/tests.rs
@@ -1,3 +1,5 @@
+#![cfg(not(debug_assertions))]
+
 use serde_derive::Deserialize;
 use serde_yaml;
 use state_processing::{per_block_processing, per_slot_processing};
@@ -15,7 +17,7 @@ pub struct ExpectedState {
     pub current_epoch_attestations: Option<Vec<PendingAttestation>>,
     pub historical_roots: Option<Vec<Hash256>>,
     pub finalized_epoch: Option<Epoch>,
-    pub latest_block_roots: Option<Vec<Hash256>>,
+    pub latest_block_roots: Option<TreeHashVector<Hash256>>,
 }
 
 impl ExpectedState {
@@ -26,7 +28,7 @@ impl ExpectedState {
             ($field_name:ident) => {
                 if self.$field_name.as_ref().map_or(true, |$field_name| {
                     println!("  > Checking {}", stringify!($field_name));
-                    &state.$field_name == $field_name
+                    $field_name == &state.$field_name
                 }) {
                     vec![]
                 } else {
diff --git a/eth2/types/src/tree_hash_vector.rs b/eth2/types/src/tree_hash_vector.rs
index 9b77e13dcd..1cc8e40a55 100644
--- a/eth2/types/src/tree_hash_vector.rs
+++ b/eth2/types/src/tree_hash_vector.rs
@@ -33,12 +33,6 @@ impl<T> DerefMut for TreeHashVector<T> {
     }
 }
 
-impl<T: PartialEq> PartialEq<Vec<T>> for TreeHashVector<T> {
-    fn eq(&self, other: &Vec<T>) -> bool {
-        &self.0 == other
-    }
-}
-
 impl<T> tree_hash::TreeHash for TreeHashVector<T>
 where
     T: TreeHash,
diff --git a/eth2/utils/boolean-bitfield/src/lib.rs b/eth2/utils/boolean-bitfield/src/lib.rs
index a744c94981..1d0f1c02e3 100644
--- a/eth2/utils/boolean-bitfield/src/lib.rs
+++ b/eth2/utils/boolean-bitfield/src/lib.rs
@@ -9,7 +9,6 @@ use serde_hex::{encode, PrefixedHexVisitor};
 use ssz::{Decodable, Encodable};
 use std::cmp;
 use std::default;
-use tree_hash::tree_hash_ssz_encoding_as_list;
 
 /// A BooleanBitfield represents a set of booleans compactly stored as a vector of bits.
 /// The BooleanBitfield is given a fixed size during construction. Reads outside of the current size return an out-of-bounds error. Writes outside of the current size expand the size of the set.
diff --git a/eth2/utils/ssz_derive/src/lib.rs b/eth2/utils/ssz_derive/src/lib.rs
index f3475f5a79..c5b53e9341 100644
--- a/eth2/utils/ssz_derive/src/lib.rs
+++ b/eth2/utils/ssz_derive/src/lib.rs
@@ -38,7 +38,7 @@
 extern crate proc_macro;
 
 use proc_macro::TokenStream;
-use quote::{quote, ToTokens};
+use quote::quote;
 use syn::{parse_macro_input, DeriveInput};
 
 /// Returns a Vec of `syn::Ident` for each named field in the struct.