diff --git a/zcash_primitives/src/block.rs b/zcash_primitives/src/block.rs
index 05b65e0..c0eb92f 100644
--- a/zcash_primitives/src/block.rs
+++ b/zcash_primitives/src/block.rs
@@ -4,7 +4,7 @@ use std::fmt;
 use std::io::{self, Read, Write};
 use std::ops::Deref;
 
-use serialize::Vector;
+use crate::serialize::Vector;
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
 pub struct BlockHash(pub [u8; 32]);
diff --git a/zcash_primitives/src/group_hash.rs b/zcash_primitives/src/group_hash.rs
index dec59cd..e67ca49 100644
--- a/zcash_primitives/src/group_hash.rs
+++ b/zcash_primitives/src/group_hash.rs
@@ -1,9 +1,9 @@
-use jubjub::{edwards, JubjubEngine, PrimeOrder};
+use crate::jubjub::{edwards, JubjubEngine, PrimeOrder};
 
 use ff::PrimeField;
 
 use blake2s_simd::Params;
-use constants;
+use crate::constants;
 
 /// Produces a random point in the Jubjub curve.
 /// The point is guaranteed to be prime order
diff --git a/zcash_primitives/src/jubjub/fs.rs b/zcash_primitives/src/jubjub/fs.rs
index 768bd83..90a179f 100644
--- a/zcash_primitives/src/jubjub/fs.rs
+++ b/zcash_primitives/src/jubjub/fs.rs
@@ -75,9 +75,9 @@ pub struct FsRepr(pub [u64; 4]);
 
 impl ::std::fmt::Display for FsRepr {
     fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
-        try!(write!(f, "0x"));
+        r#try!(write!(f, "0x"));
         for i in self.0.iter().rev() {
-            try!(write!(f, "{:016x}", *i));
+            r#try!(write!(f, "{:016x}", *i));
         }
 
         Ok(())
diff --git a/zcash_primitives/src/jubjub/mod.rs b/zcash_primitives/src/jubjub/mod.rs
index e626db1..8d9e227 100644
--- a/zcash_primitives/src/jubjub/mod.rs
+++ b/zcash_primitives/src/jubjub/mod.rs
@@ -20,9 +20,9 @@
 use ff::{Field, PrimeField, SqrtField};
 use pairing::Engine;
 
-use group_hash::group_hash;
+use crate::group_hash::group_hash;
 
-use constants;
+use crate::constants;
 
 use pairing::bls12_381::{Bls12, Fr};
 
@@ -122,7 +122,7 @@ pub trait JubjubParams<E: JubjubEngine>: Sized {
     fn generator(&self, base: FixedGenerators) -> &edwards::Point<E, PrimeOrder>;
     /// Returns a window table [0, 1, ..., 8] for different magnitudes of some
     /// fixed generator.
-    fn circuit_generators(&self, FixedGenerators) -> &[Vec<(E::Fr, E::Fr)>];
+    fn circuit_generators(&self, _: FixedGenerators) -> &[Vec<(E::Fr, E::Fr)>];
     /// Returns the window size for exponentiation of Pedersen hash generators
     /// outside the circuit
     fn pedersen_hash_exp_window_size() -> u32;
diff --git a/zcash_primitives/src/lib.rs b/zcash_primitives/src/lib.rs
index 1d4806e..8bc5fe8 100644
--- a/zcash_primitives/src/lib.rs
+++ b/zcash_primitives/src/lib.rs
@@ -43,7 +43,7 @@ pub mod zip32;
 #[cfg(test)]
 mod test_vectors;
 
-use jubjub::JubjubBls12;
+use crate::jubjub::JubjubBls12;
 
 lazy_static! {
     pub static ref JUBJUB: JubjubBls12 = { JubjubBls12::new() };
diff --git a/zcash_primitives/src/merkle_tree.rs b/zcash_primitives/src/merkle_tree.rs
index aa1596d..288ad21 100644
--- a/zcash_primitives/src/merkle_tree.rs
+++ b/zcash_primitives/src/merkle_tree.rs
@@ -5,8 +5,8 @@ use std::collections::VecDeque;
 use std::io::{self, Read, Write};
 use std::iter;
 
-use sapling::SAPLING_COMMITMENT_TREE_DEPTH;
-use serialize::{Optional, Vector};
+use crate::sapling::SAPLING_COMMITMENT_TREE_DEPTH;
+use crate::serialize::{Optional, Vector};
 
 /// A hashable node within a Merkle tree.
 pub trait Hashable: Clone + Copy {
@@ -17,13 +17,13 @@ pub trait Hashable: Clone + Copy {
     fn write<W: Write>(&self, writer: W) -> io::Result<()>;
 
     /// Returns the parent node within the tree of the two given nodes.
-    fn combine(usize, &Self, &Self) -> Self;
+    fn combine(_: usize, _: &Self, _: &Self) -> Self;
 
     /// Returns a blank leaf node.
     fn blank() -> Self;
 
     /// Returns the empty root for the given depth.
-    fn empty_root(usize) -> Self;
+    fn empty_root(_: usize) -> Self;
 }
 
 struct PathFiller<Node: Hashable> {
@@ -509,7 +509,7 @@ impl<Node: Hashable> CommitmentTreeWitness<Node> {
 #[cfg(test)]
 mod tests {
     use super::{CommitmentTree, CommitmentTreeWitness, Hashable, IncrementalWitness, PathFiller};
-    use sapling::Node;
+    use crate::sapling::Node;
 
     use ff::PrimeFieldRepr;
     use hex;
diff --git a/zcash_primitives/src/pedersen_hash.rs b/zcash_primitives/src/pedersen_hash.rs
index f21b17b..0274a1e 100644
--- a/zcash_primitives/src/pedersen_hash.rs
+++ b/zcash_primitives/src/pedersen_hash.rs
@@ -1,5 +1,5 @@
 use ff::{Field, PrimeField, PrimeFieldRepr};
-use jubjub::*;
+use crate::jubjub::*;
 
 #[derive(Copy, Clone)]
 pub enum Personalization {
diff --git a/zcash_primitives/src/primitives.rs b/zcash_primitives/src/primitives.rs
index d1282b7..10a6d6b 100644
--- a/zcash_primitives/src/primitives.rs
+++ b/zcash_primitives/src/primitives.rs
@@ -1,14 +1,14 @@
 use ff::{Field, PrimeField, PrimeFieldRepr};
 
-use constants;
+use crate::constants;
 
-use group_hash::group_hash;
+use crate::group_hash::group_hash;
 
-use pedersen_hash::{pedersen_hash, Personalization};
+use crate::pedersen_hash::{pedersen_hash, Personalization};
 
 use byteorder::{LittleEndian, WriteBytesExt};
 
-use jubjub::{edwards, FixedGenerators, JubjubEngine, JubjubParams, PrimeOrder};
+use crate::jubjub::{edwards, FixedGenerators, JubjubEngine, JubjubParams, PrimeOrder};
 
 use blake2s_simd::Params as Blake2sParams;
 
diff --git a/zcash_primitives/src/redjubjub.rs b/zcash_primitives/src/redjubjub.rs
index 370f63d..6721b5e 100644
--- a/zcash_primitives/src/redjubjub.rs
+++ b/zcash_primitives/src/redjubjub.rs
@@ -6,7 +6,7 @@ use ff::{Field, PrimeField, PrimeFieldRepr};
 use rand_core::RngCore;
 use std::io::{self, Read, Write};
 
-use util::hash_to_scalar;
+use crate::util::hash_to_scalar;
 
 fn read_scalar<E: JubjubEngine, R: Read>(reader: R) -> io::Result<E::Fs> {
     let mut s_repr = <E::Fs as PrimeField>::Repr::default();
diff --git a/zcash_primitives/src/sapling.rs b/zcash_primitives/src/sapling.rs
index 02282d3..d84eec2 100644
--- a/zcash_primitives/src/sapling.rs
+++ b/zcash_primitives/src/sapling.rs
@@ -12,7 +12,7 @@ use std::io::{self, Read, Write};
 
 use crate::merkle_tree::Hashable;
 use crate::redjubjub::{PrivateKey, PublicKey, Signature};
-use JUBJUB;
+use crate::JUBJUB;
 
 pub const SAPLING_COMMITMENT_TREE_DEPTH: usize = 32;
 
diff --git a/zcash_primitives/src/transaction/builder.rs b/zcash_primitives/src/transaction/builder.rs
index b0e96f5..244f41b 100644
--- a/zcash_primitives/src/transaction/builder.rs
+++ b/zcash_primitives/src/transaction/builder.rs
@@ -7,7 +7,7 @@ use crate::{
 use ff::Field;
 use pairing::bls12_381::{Bls12, Fr};
 use rand::{rngs::OsRng, seq::SliceRandom, CryptoRng, RngCore};
-use zip32::ExtendedSpendingKey;
+use crate::zip32::ExtendedSpendingKey;
 
 use crate::{
     keys::OutgoingViewingKey,
diff --git a/zcash_primitives/src/transaction/components.rs b/zcash_primitives/src/transaction/components.rs
index 7d2ffbb..31a7f4e 100644
--- a/zcash_primitives/src/transaction/components.rs
+++ b/zcash_primitives/src/transaction/components.rs
@@ -4,9 +4,9 @@ use ff::{PrimeField, PrimeFieldRepr};
 use pairing::bls12_381::{Bls12, Fr, FrRepr};
 use std::io::{self, Read, Write};
 
-use legacy::Script;
-use redjubjub::{PublicKey, Signature};
-use JUBJUB;
+use crate::legacy::Script;
+use crate::redjubjub::{PublicKey, Signature};
+use crate::JUBJUB;
 
 pub mod amount;
 pub use self::amount::Amount;
diff --git a/zcash_primitives/src/transaction/mod.rs b/zcash_primitives/src/transaction/mod.rs
index 6e2d15f..319ba85 100644
--- a/zcash_primitives/src/transaction/mod.rs
+++ b/zcash_primitives/src/transaction/mod.rs
@@ -5,8 +5,8 @@ use std::fmt;
 use std::io::{self, Read, Write};
 use std::ops::Deref;
 
-use redjubjub::Signature;
-use serialize::Vector;
+use crate::redjubjub::Signature;
+use crate::serialize::Vector;
 
 pub mod builder;
 pub mod components;
diff --git a/zcash_primitives/src/transaction/sighash.rs b/zcash_primitives/src/transaction/sighash.rs
index b4e9a69..1b05658 100644
--- a/zcash_primitives/src/transaction/sighash.rs
+++ b/zcash_primitives/src/transaction/sighash.rs
@@ -7,7 +7,7 @@ use super::{
     Transaction, TransactionData, OVERWINTER_VERSION_GROUP_ID, SAPLING_TX_VERSION,
     SAPLING_VERSION_GROUP_ID,
 };
-use legacy::Script;
+use crate::legacy::Script;
 
 const ZCASH_SIGHASH_PERSONALIZATION_PREFIX: &'static [u8; 12] = b"ZcashSigHash";
 const ZCASH_PREVOUTS_HASH_PERSONALIZATION: &'static [u8; 16] = b"ZcashPrevoutHash";
diff --git a/zcash_primitives/src/transaction/tests.rs b/zcash_primitives/src/transaction/tests.rs
index 7c770c5..d772944 100644
--- a/zcash_primitives/src/transaction/tests.rs
+++ b/zcash_primitives/src/transaction/tests.rs
@@ -5,9 +5,9 @@ use rand_os::OsRng;
 use crate::jubjub::{fs::Fs, FixedGenerators};
 
 use super::{components::Amount, sighash::signature_hash, Transaction, TransactionData};
-use legacy::Script;
-use redjubjub::PrivateKey;
-use JUBJUB;
+use crate::legacy::Script;
+use crate::redjubjub::PrivateKey;
+use crate::JUBJUB;
 
 #[test]
 fn tx_read_write() {