Fix a lot of Clippy warnings (#1808)

* fix a lot of clippy warnings

* fix more clippy warnings

* fix yet more clippy warnings

* bump msrv to 1.70.0 to silence warnings

* fix a lot of clippy warnings

* fix more clippy warnings

* fix yet more clippy warnings

* fix a few more warnings

* fix a clippy warning

* remove a commented out line

* silense too many arguments error

* fix more clippy warnings

* prefix underscore to unused vars/functions to fix warnings

* use filter instead of map

* move raw-rs-tests feature flat to module level to fix unused imports warnings

* fix a couple of unused result warnings

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>

libraries/raw-rs/src/decoder/arw2.rs

@@ -30,7 +30,7 @@ pub fn decode<R: Read + Seek>(ifd: Ifd, file: &mut TiffRead<R>) -> RawImage {
 
 	let image_width: usize = ifd.image_width.try_into().unwrap();
 	let image_height: usize = ifd.image_height.try_into().unwrap();
-	let bits_per_sample: usize = ifd.bits_per_sample.into();
+	let _bits_per_sample: usize = ifd.bits_per_sample.into();
 	let [cfa_pattern_width, cfa_pattern_height] = ifd.cfa_pattern_dim;
 	assert!(cfa_pattern_width == 2 && cfa_pattern_height == 2);
 
@@ -81,10 +81,10 @@ fn sony_arw2_load_raw<R: Read + Seek>(width: usize, height: usize, curve: CurveL
 			let max_minus_min = max as i32 - min as i32;
 			let shift_by_bits = (0..4).find(|&shift| (0x80 << shift) > max_minus_min).unwrap_or(4);
 
-			let mut pixel = [0_u16; 16];
+			let mut pixels = [0_u16; 16];
 			let mut bit = 30;
-			for i in 0..16 {
-				pixel[i] = match () {
+			for (i, pixel) in pixels.iter_mut().enumerate() {
+				*pixel = match () {
 					_ if i as u32 == index_to_set_max => max,
 					_ if i as u32 == index_to_set_min => min,
 					_ => {
@@ -98,7 +98,7 @@ fn sony_arw2_load_raw<R: Read + Seek>(width: usize, height: usize, curve: CurveL
 				};
 			}
 
-			for value in pixel {
+			for value in pixels {
 				image[row * width + column] = curve.get((value << 1).into()) >> 2;
 
 				// Skip between interlaced columns

libraries/raw-rs/src/decoder/uncompressed.rs

@@ -29,7 +29,7 @@ pub fn decode<R: Read + Seek>(ifd: Ifd, file: &mut TiffRead<R>) -> RawImage {
 	let image_width: usize = ifd.image_width.try_into().unwrap();
 	let image_height: usize = ifd.image_height.try_into().unwrap();
 	let rows_per_strip: usize = ifd.rows_per_strip.try_into().unwrap();
-	let bits_per_sample: usize = ifd.bits_per_sample.into();
+	let _bits_per_sample: usize = ifd.bits_per_sample.into();
 	let [cfa_pattern_width, cfa_pattern_height] = ifd.cfa_pattern_dim;
 	assert!(cfa_pattern_width == 2 && cfa_pattern_height == 2);
 

libraries/raw-rs/src/tiff/mod.rs

@@ -106,7 +106,7 @@ impl Ifd {
 		})
 	}
 
-	fn next_ifd<R: Read + Seek>(&self, file: &mut TiffRead<R>) -> Result<Self, TiffError> {
+	fn _next_ifd<R: Read + Seek>(&self, file: &mut TiffRead<R>) -> Result<Self, TiffError> {
 		Ifd::new_from_offset(file, self.next_ifd_offset.unwrap_or(0))
 	}
 

libraries/raw-rs/src/tiff/types.rs

@@ -270,7 +270,7 @@ impl PrimitiveType for TypeIfd {
 
 	fn read_primitive<R: Read + Seek>(the_type: IfdTagType, file: &mut TiffRead<R>) -> Result<Self::Output, TiffError> {
 		let offset = TypeLong::read_primitive(the_type, file)?;
-		Ok(Ifd::new_from_offset(file, offset)?)
+		Ifd::new_from_offset(file, offset)
 	}
 }
 
@@ -284,7 +284,7 @@ impl<T: PrimitiveType> TagType for T {
 	type Output = T::Output;
 
 	fn read<R: Read + Seek>(file: &mut TiffRead<R>) -> Result<Self::Output, TiffError> {
-		let the_type = IfdTagType::try_from(file.read_u16()?).map_err(|_| TiffError::InvalidType)?;
+		let the_type = IfdTagType::from(file.read_u16()?);
 		let count = file.read_u32()?;
 
 		if count != 1 {
@@ -313,7 +313,7 @@ impl<T: PrimitiveType> TagType for Array<T> {
 	type Output = Vec<T::Output>;
 
 	fn read<R: Read + Seek>(file: &mut TiffRead<R>) -> Result<Self::Output, TiffError> {
-		let the_type = IfdTagType::try_from(file.read_u16()?).map_err(|_| TiffError::InvalidType)?;
+		let the_type = IfdTagType::from(file.read_u16()?);
 		let count = file.read_u32()?;
 
 		let size = T::get_size(the_type).ok_or(TiffError::InvalidType)?;
@@ -334,7 +334,7 @@ impl<T: PrimitiveType, const N: usize> TagType for ConstArray<T, N> {
 	type Output = [T::Output; N];
 
 	fn read<R: Read + Seek>(file: &mut TiffRead<R>) -> Result<Self::Output, TiffError> {
-		let the_type = IfdTagType::try_from(file.read_u16()?).map_err(|_| TiffError::InvalidType)?;
+		let the_type = IfdTagType::from(file.read_u16()?);
 		let count = file.read_u32()?;
 
 		if count != N.try_into()? {