Fix unused import warnings

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Fixed
 - `U16String::pop_char` panics with surrogate string. Fixes [#38].
+- Various import and new clippy warnings.
 
 ## [1.0.2] - 2022-07-15 <a name="1.0.2"></a>
 ### Fixed

src/error.rs

@@ -1,6 +1,7 @@
 //! Errors returned by functions in this crate.
 
 #[cfg(feature = "alloc")]
+#[allow(unused_imports)]
 use alloc::vec::Vec;
 
 /// An error returned to indicate a problem with nul values occurred.

src/iter.rs

@@ -5,6 +5,7 @@ use crate::{
     error::{DecodeUtf16Error, DecodeUtf32Error},
     is_utf16_high_surrogate, is_utf16_low_surrogate, is_utf16_surrogate,
 };
+#[allow(unused_imports)]
 use core::{
     char,
     iter::{DoubleEndedIterator, ExactSizeIterator, FusedIterator},

src/lib.rs

@@ -236,6 +236,7 @@ extern crate alloc;
 
 use crate::error::{DecodeUtf16Error, DecodeUtf32Error};
 #[cfg(feature = "alloc")]
+#[allow(unused_imports)]
 use alloc::vec::Vec;
 use core::fmt::Write;
 

src/ucstr.rs

@@ -7,6 +7,7 @@ use crate::{
     U16Str, U32Str,
 };
 #[cfg(feature = "alloc")]
+#[allow(unused_imports)]
 use alloc::{borrow::ToOwned, boxed::Box, string::String};
 use core::{
     fmt::Write,

src/ucstring.rs

@@ -3,6 +3,7 @@
 //! This module contains wide C strings and related types.
 
 use crate::{error::ContainsNul, U16CStr, U16Str, U16String, U32CStr, U32Str, U32String};
+#[allow(unused_imports)]
 use alloc::{
     borrow::{Cow, ToOwned},
     boxed::Box,

src/ustr.rs

@@ -8,6 +8,7 @@ use crate::{
     U16String, U32String,
 };
 #[cfg(feature = "alloc")]
+#[allow(unused_imports)]
 use alloc::{boxed::Box, string::String, vec::Vec};
 use core::{
     char,

src/ustring.rs

@@ -3,6 +3,7 @@
 //! This module contains wide strings and related types.
 
 use crate::{U16CStr, U16CString, U16Str, U32CStr, U32CString, U32Str};
+#[allow(unused_imports)]
 use alloc::{
     borrow::{Cow, ToOwned},
     boxed::Box,

src/utfstr.rs

@@ -11,6 +11,7 @@ use crate::{
 #[cfg(feature = "alloc")]
 use crate::{Utf16String, Utf32String};
 #[cfg(feature = "alloc")]
+#[allow(unused_imports)]
 use alloc::{borrow::Cow, boxed::Box, string::String};
 use core::{
     convert::{AsMut, AsRef, TryFrom},

src/utfstring.rs

@@ -8,6 +8,7 @@ use crate::{
     is_utf16_low_surrogate, is_utf16_surrogate, validate_utf16, validate_utf16_vec, validate_utf32,
     validate_utf32_vec, Utf16Str, Utf32Str,
 };
+#[allow(unused_imports)]
 use alloc::{
     borrow::{Cow, ToOwned},
     boxed::Box,