Tidy up imports

Cargo.toml

@@ -12,11 +12,11 @@ publish = false
 android_logger = "0.6"
 failure = "0.1"
 jni = { version = "0.10", default-features = false }
+log = "0.4"
 log-panics = "2.0.0"
 protobuf = "2"
 rand = "0.4"
 rusqlite = { version = "0.15", features = ["bundled"] }
-log = "0.4"
 
 [dependencies.ff]
 git = "https://github.com/str4d/librustzcash.git"

src/main/rust/lib.rs

@@ -3,7 +3,10 @@ extern crate failure;
 #[macro_use]
 extern crate log;
 
+extern crate android_logger;
 extern crate ff;
+extern crate jni;
+extern crate log_panics;
 extern crate pairing;
 extern crate protobuf;
 extern crate rusqlite;
@@ -16,10 +19,12 @@ mod sql;
 
 const SAPLING_CONSENSUS_BRANCH_ID: u32 = 0x76b8_09bb;
 
-extern crate android_logger;
-extern crate jni;
-extern crate log_panics;
-
+use android_logger::Filter;
+use jni::{
+    objects::{JClass, JString},
+    sys::{jboolean, jbyteArray, jint, jlong, jobjectArray, jsize, jstring, JNI_FALSE, JNI_TRUE},
+    JNIEnv,
+};
 use log::Level;
 use std::path::Path;
 use zcash_client_backend::{
@@ -33,13 +38,6 @@ use zcash_client_backend::{
 use zcash_primitives::transaction::components::Amount;
 use zip32::{ChildIndex, ExtendedFullViewingKey, ExtendedSpendingKey};
 
-use self::android_logger::Filter;
-use self::jni::objects::{JClass, JString};
-use self::jni::sys::{
-    jboolean, jbyteArray, jint, jlong, jobjectArray, jsize, jstring, JNI_FALSE, JNI_TRUE,
-};
-use self::jni::JNIEnv;
-
 use crate::sql::{
     get_address, get_balance, init_accounts_table, init_blocks_table, init_data_database,
     scan_cached_blocks, send_to_address,