Bump MSRV to 1.88

.github/workflows/rust.yml

@@ -9,14 +9,14 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        rust: ["1.85.0", stable, beta, nightly]
+        rust: ["1.88.0", stable, beta, nightly]
     steps:
     - uses: actions/checkout@v2
 
     - uses: dtolnay/rust-toolchain@nightly
-      if: ${{ matrix.rust == '1.85.0' }}
+      if: ${{ matrix.rust == '1.88.0' }}
     - name: Generate Cargo.lock with minimal-version dependencies
-      if: ${{ matrix.rust == '1.85.0' }}
+      if: ${{ matrix.rust == '1.88.0' }}
       run: cargo -Zminimal-versions generate-lockfile
 
     - uses: dtolnay/rust-toolchain@v1
@@ -29,7 +29,7 @@ jobs:
     - name: build
       run: cargo build -v
     - name: test
-      if: ${{ matrix.rust != '1.85.0' }}
+      if: ${{ matrix.rust != '1.88.0' }}
       run: cargo test -v && cargo doc -v
 
   features:

Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 resolver = "2"
 
 # note: when changed, also update test runner in `.github/workflows/rust.yml`
-rust-version = "1.85.0"
+rust-version = "1.88.0"
 
 license = "MIT"
 description = "TIFF decoding and encoding library in pure Rust"

src/decoder/image.rs

@@ -1029,7 +1029,7 @@ impl Image {
 
             debug_assert!(bits_per_pixel >= photometric_bit_end);
 
-            if bits_per_pixel % 8 != 0 || photometric_bit_end % 8 != 0 {
+            if !bits_per_pixel.is_multiple_of(8) || !photometric_bit_end.is_multiple_of(8) {
                 return Err(TiffError::UnsupportedError(
                     TiffUnsupportedError::InterpretationWithBits(
                         self.photometric_interpretation,

src/encoder/mod.rs

@@ -403,7 +403,7 @@ impl<'a, W: 'a + Write + Seek, K: TiffKind> DirectoryEncoder<'a, W, K> {
     /// Returns an [`Entry`]. If the value is short enough it will *not* be written in the file but
     /// stored in the entry's offset field.
     pub fn write_entry_bytes(&mut self, ty: Type, data: &[u8]) -> TiffResult<Entry> {
-        if data.len() % usize::from(ty.byte_len()) != 0 {
+        if !data.len().is_multiple_of(usize::from(ty.byte_len())) {
             return Err(TiffError::UsageError(UsageError::MismatchedEntryLength {
                 ty,
                 found: data.len(),

src/encoder/writer.rs

@@ -172,7 +172,7 @@ impl<W: Write> TiffWriter<W> {
     }
 
     pub fn pad_word_boundary(&mut self) -> Result<(), io::Error> {
-        if self.offset % 4 != 0 {
+        if !self.offset.is_multiple_of(4) {
             let padding = [0, 0, 0];
             let padd_len = 4 - (self.offset % 4);
             self.writer.write_all(&padding[..padd_len as usize])?;