diff --git a/src/aztec/shared_test_methods.rs b/src/aztec/shared_test_methods.rs
index b13b81e..edd5a6d 100644
--- a/src/aztec/shared_test_methods.rs
+++ b/src/aztec/shared_test_methods.rs
@@ -9,6 +9,7 @@ lazy_static! {
     static ref DOTX: Regex = Regex::new("[^.X]").unwrap();
 }
 
+#[allow(dead_code)]
 pub fn toBitArray(bits: &str) -> BitArray {
     let mut ba_in = BitArray::new();
     let str = DOTX.replace_all(bits, "");
@@ -20,6 +21,7 @@ pub fn toBitArray(bits: &str) -> BitArray {
     ba_in
 }
 
+#[allow(dead_code)]
 pub fn toBooleanArray(bitArray: &BitArray) -> Vec<bool> {
     let mut result = vec![false; bitArray.getSize()];
     for i in 0..result.len() {
@@ -29,6 +31,7 @@ pub fn toBooleanArray(bitArray: &BitArray) -> Vec<bool> {
     result
 }
 
+#[allow(dead_code)]
 pub fn stripSpace(s: &str) -> String {
     SPACES.replace_all(s, "").to_string()
 }
diff --git a/src/client/result/ExpandedProductResultParser.rs b/src/client/result/ExpandedProductResultParser.rs
index b927e2d..70693d1 100644
--- a/src/client/result/ExpandedProductResultParser.rs
+++ b/src/client/result/ExpandedProductResultParser.rs
@@ -37,7 +37,7 @@ use std::collections::HashMap;
 use crate::BarcodeFormat;
 
 use super::{
-    ExpandedProductParsedRXingResult, ExpandedProductParsedResult, ParsedClientResult, ResultParser,
+    ExpandedProductParsedRXingResult, ParsedClientResult, ResultParser,
 };
 
 /**
diff --git a/src/client/result/WifiResultParser.rs b/src/client/result/WifiResultParser.rs
index 1e71527..ad18218 100644
--- a/src/client/result/WifiResultParser.rs
+++ b/src/client/result/WifiResultParser.rs
@@ -70,7 +70,7 @@ pub fn parse(theRXingResult: &crate::RXingResult) -> Option<super::ParsedClientR
     // is 'true' or 'false':
     let mut hidden = false;
     let mut phase2Method = ResultParser::matchSinglePrefixedField("PH2:", &rawText, ';', false);
-    let hValue = if let Some(hv) =
+    let _hValue = if let Some(hv) =
         ResultParser::matchSinglePrefixedField("H:", &rawText, ';', false)
     {
         // If PH2 was specified separately, or if the value is clearly boolean, interpret it as 'hidden'
diff --git a/src/common/BitMatrixTestCase.rs b/src/common/BitMatrixTestCase.rs
index a61d21b..969bb73 100644
--- a/src/common/BitMatrixTestCase.rs
+++ b/src/common/BitMatrixTestCase.rs
@@ -269,7 +269,7 @@ fn test_parse_boolean() {
     fullMatrix.setRegion(0, 0, 3, 3).expect("must set");
     let mut centerMatrix = BitMatrix::new(3, 3).unwrap();
     centerMatrix.setRegion(1, 1, 1, 1).expect("must set");
-    let emptyMatrix24 = BitMatrix::new(2, 4).unwrap();
+    let _emptyMatrix24 = BitMatrix::new(2, 4).unwrap();
 
     let mut matrix = vec![vec![false; 3]; 3];
     // boolean[][] matrix = new boolean[3][3];
diff --git a/src/datamatrix/data_matrix_reader.rs b/src/datamatrix/data_matrix_reader.rs
index 3b46f2f..c4e25af 100644
--- a/src/datamatrix/data_matrix_reader.rs
+++ b/src/datamatrix/data_matrix_reader.rs
@@ -19,7 +19,7 @@ use std::collections::HashMap;
 use crate::{
     common::{BitMatrix, DetectorRXingResult},
     BarcodeFormat, DecodeHintType, Exceptions, RXingResult, RXingResultMetadataType,
-    RXingResultMetadataValue, RXingResultPoint, Reader,
+    RXingResultMetadataValue, Reader,
 };
 
 use super::{decoder::Decoder, detector::Detector};
@@ -27,7 +27,7 @@ use super::{decoder::Decoder, detector::Detector};
 use lazy_static::lazy_static;
 
 lazy_static! {
-    static ref decoder: Decoder = Decoder::new();
+    static ref DECODER: Decoder = Decoder::new();
 }
 
 /**
@@ -74,11 +74,11 @@ impl Reader for DataMatrixReader {
         let mut points = Vec::new();
         if hints.contains_key(&DecodeHintType::PURE_BARCODE) {
             let bits = self.extractPureBits(image.getBlackMatrix())?;
-            decoderRXingResult = decoder.decode(&bits)?;
+            decoderRXingResult = DECODER.decode(&bits)?;
             points.clear();
         } else {
             let detectorRXingResult = Detector::new(image.getBlackMatrix().clone())?.detect()?;
-            decoderRXingResult = decoder.decode(detectorRXingResult.getBits())?;
+            decoderRXingResult = DECODER.decode(detectorRXingResult.getBits())?;
             points = detectorRXingResult.getPoints().clone();
         }
         let mut result = RXingResult::new(
diff --git a/src/datamatrix/decoder/decoded_bit_stream_parser.rs b/src/datamatrix/decoder/decoded_bit_stream_parser.rs
index 3b94c1b..190bc65 100644
--- a/src/datamatrix/decoder/decoded_bit_stream_parser.rs
+++ b/src/datamatrix/decoder/decoded_bit_stream_parser.rs
@@ -589,7 +589,7 @@ fn decodeEdifactSegment(
                 // Read rest of byte, which should be 0, and stop
                 let bitsLeft = 8 - bits.getBitOffset();
                 if bitsLeft != 8 {
-                    bits.readBits(bitsLeft);
+                    bits.readBits(bitsLeft)?;
                 }
                 return Ok(());
             }
@@ -633,9 +633,10 @@ fn decodeBase256Segment(
     }
 
     // We're seeing NegativeArraySizeException errors from users.
-    if count < 0 {
-        return Err(Exceptions::FormatException("".to_owned()));
-    }
+    // but we shouldn't in rust because it's unsigned
+    // if count < 0 {
+    //     return Err(Exceptions::FormatException("".to_owned()));
+    // }
 
     let mut bytes = vec![0u8; count as usize];
     for i in 0..count as usize {
diff --git a/src/datamatrix/encoder/x12_encoder.rs b/src/datamatrix/encoder/x12_encoder.rs
index c674c45..8914982 100644
--- a/src/datamatrix/encoder/x12_encoder.rs
+++ b/src/datamatrix/encoder/x12_encoder.rs
@@ -49,7 +49,7 @@ impl Encoder for X12Encoder {
                 }
             }
         }
-        Self::handleEOD(context, &mut buffer);
+        Self::handleEOD(context, &mut buffer)?;
         Ok(())
     }
 }
@@ -70,7 +70,7 @@ impl X12Encoder {
                 } else if c >= 'A' && c <= 'Z' {
                     sb.push((c as u8 - 65 + 14) as char);
                 } else {
-                    high_level_encoder::illegalCharacter(c);
+                    high_level_encoder::illegalCharacter(c).expect("detect_illegal_character");
                 }
             }
         }
diff --git a/src/luminance_source.rs b/src/luminance_source.rs
index 201cbcf..cc59eab 100644
--- a/src/luminance_source.rs
+++ b/src/luminance_source.rs
@@ -86,10 +86,10 @@ pub trait LuminanceSource {
      */
     fn crop(
         &self,
-        left: usize,
-        top: usize,
-        width: usize,
-        height: usize,
+        _left: usize,
+        _top: usize,
+        _width: usize,
+        _height: usize,
     ) -> Result<Box<dyn LuminanceSource>, Exceptions> {
         return Err(Exceptions::UnsupportedOperationException(
             "This luminance source does not support cropping.".to_owned(),
diff --git a/src/multi/multi_test_case.rs b/src/multi/multi_test_case.rs
index 8f034ad..92c9149 100644
--- a/src/multi/multi_test_case.rs
+++ b/src/multi/multi_test_case.rs
@@ -17,7 +17,7 @@
 use std::{collections::HashSet, path::PathBuf, rc::Rc};
 
 use crate::{
-    common::HybridBinarizer, qrcode::QRCodeReader, BarcodeFormat, BinaryBitmap,
+    common::HybridBinarizer, BarcodeFormat, BinaryBitmap,
     BufferedImageLuminanceSource, MultiFormatReader,
 };
 
diff --git a/src/multi/qrcode/detector/multi_detector.rs b/src/multi/qrcode/detector/multi_detector.rs
index 60aff22..f90b9f9 100644
--- a/src/multi/qrcode/detector/multi_detector.rs
+++ b/src/multi/qrcode/detector/multi_detector.rs
@@ -15,7 +15,7 @@
  */
 
 use crate::{
-    common::{BitMatrix, DetectorRXingResult},
+    common::{BitMatrix},
     qrcode::detector::{Detector, QRCodeDetectorResult},
     DecodeHintType, DecodeHintValue, DecodingHintDictionary, Exceptions,
 };
diff --git a/src/multi/qrcode/detector/multi_finder_pattern_finder.rs b/src/multi/qrcode/detector/multi_finder_pattern_finder.rs
index d93861c..9d52b1c 100644
--- a/src/multi/qrcode/detector/multi_finder_pattern_finder.rs
+++ b/src/multi/qrcode/detector/multi_finder_pattern_finder.rs
@@ -19,7 +19,7 @@ use std::cmp::Ordering;
 use crate::{
     common::BitMatrix,
     qrcode::detector::{FinderPattern, FinderPatternFinder, FinderPatternInfo},
-    result_point_utils, DecodeHintType, DecodingHintDictionary, Exceptions, RXingResultPoint,
+    result_point_utils, DecodeHintType, DecodingHintDictionary, Exceptions,
     RXingResultPointCallback,
 };
 
diff --git a/src/oned/coda_bar_writer.rs b/src/oned/coda_bar_writer.rs
index 1c28158..e5ed713 100644
--- a/src/oned/coda_bar_writer.rs
+++ b/src/oned/coda_bar_writer.rs
@@ -169,7 +169,6 @@ impl Default for CodaBarWriter {
 mod CodaBarWriterTestCase {
     use crate::{
         common::{BitMatrix, BitMatrixTestCase},
-        oned::OneDimensionalCodeWriter,
         BarcodeFormat, Writer,
     };
 
diff --git a/src/oned/code_128_writer.rs b/src/oned/code_128_writer.rs
index 8756649..378d2a9 100644
--- a/src/oned/code_128_writer.rs
+++ b/src/oned/code_128_writer.rs
@@ -18,7 +18,7 @@ use one_d_proc_derive::OneDWriter;
 
 use crate::BarcodeFormat;
 
-use super::{code_128_reader, Code128Reader, OneDimensionalCodeWriter, CODE_PATTERNS};
+use super::{code_128_reader, OneDimensionalCodeWriter};
 
 const CODE_START_A: usize = 103;
 const CODE_START_B: usize = 104;
diff --git a/src/oned/code_128_writer_test_tase.rs b/src/oned/code_128_writer_test_tase.rs
index 99a8384..25b8b9d 100644
--- a/src/oned/code_128_writer_test_tase.rs
+++ b/src/oned/code_128_writer_test_tase.rs
@@ -44,7 +44,7 @@ use crate::{
 
 use super::Code128Writer;
 lazy_static! {
-    static ref writer: Code128Writer = Code128Writer::default();
+    static ref WRITER: Code128Writer = Code128Writer::default();
 }
 
 #[test]
@@ -330,7 +330,7 @@ fn testEncodeWithForcedCodeSetFailureCodeSetABadCharacter() {
         EncodeHintType::FORCE_CODE_SET,
         EncodeHintValue::ForceCodeSet("A".to_string()),
     );
-    writer
+    WRITER
         .encode_with_hints(toEncode, &BarcodeFormat::CODE_128, 0, 0, &hints)
         .expect("encode");
 }
@@ -348,7 +348,7 @@ fn testEncodeWithForcedCodeSetFailureCodeSetBBadCharacter() {
     );
     // let  hints = new EnumMap<>(EncodeHintType.class);
     // hints.put(EncodeHintType.FORCE_CODE_SET, "B");
-    writer
+    WRITER
         .encode_with_hints(toEncode, &BarcodeFormat::CODE_128, 0, 0, &hints)
         .expect("encode");
 }
@@ -366,7 +366,7 @@ fn testEncodeWithForcedCodeSetFailureCodeSetCBadCharactersNonNum() {
     );
     // let  hints = new EnumMap<>(EncodeHintType.class);
     // hints.put(EncodeHintType.FORCE_CODE_SET, "C");
-    writer
+    WRITER
         .encode_with_hints(toEncode, &BarcodeFormat::CODE_128, 0, 0, &hints)
         .expect("encode");
 }
@@ -382,7 +382,7 @@ fn testEncodeWithForcedCodeSetFailureCodeSetCBadCharactersFncCode() {
         EncodeHintType::FORCE_CODE_SET,
         EncodeHintValue::ForceCodeSet("C".to_string()),
     );
-    writer
+    WRITER
         .encode_with_hints(toEncode, &BarcodeFormat::CODE_128, 0, 0, &hints)
         .expect("encode");
 }
@@ -398,7 +398,7 @@ fn testEncodeWithForcedCodeSetFailureCodeSetCWrongAmountOfDigits() {
         EncodeHintType::FORCE_CODE_SET,
         EncodeHintValue::ForceCodeSet("C".to_string()),
     );
-    writer
+    WRITER
         .encode_with_hints(toEncode, &BarcodeFormat::CODE_128, 0, 0, &hints)
         .expect("encode");
 }
@@ -429,7 +429,7 @@ fn testEncodeWithForcedCodeSetFailureCodeSetA() {
         EncodeHintType::FORCE_CODE_SET,
         EncodeHintValue::ForceCodeSet("A".to_string()),
     );
-    let result = writer
+    let result = WRITER
         .encode_with_hints(toEncode, &BarcodeFormat::CODE_128, 0, 0, &hints)
         .expect("encode");
 
@@ -462,7 +462,7 @@ fn testEncodeWithForcedCodeSetFailureCodeSetB() {
         EncodeHintType::FORCE_CODE_SET,
         EncodeHintValue::ForceCodeSet("B".to_string()),
     );
-    let result = writer
+    let result = WRITER
         .encode_with_hints(toEncode, &BarcodeFormat::CODE_128, 0, 0, &hints)
         .expect("encode");
 
@@ -481,7 +481,7 @@ fn encode(toEncode: &str, compact: bool, expectedLoopback: &str) -> Result<BitMa
         );
     }
     let encRXingResult =
-        writer.encode_with_hints(toEncode, &BarcodeFormat::CODE_128, 0, 0, &hints)?;
+        WRITER.encode_with_hints(toEncode, &BarcodeFormat::CODE_128, 0, 0, &hints)?;
     if !expectedLoopback.is_empty() {
         let row = encRXingResult.getRow(0, BitArray::new());
         let rtRXingResult = reader.decodeRow(0, &row, &HashMap::new())?;
@@ -493,7 +493,7 @@ fn encode(toEncode: &str, compact: bool, expectedLoopback: &str) -> Result<BitMa
         let row = encRXingResult.getRow(0, BitArray::new());
         let rtRXingResult = reader.decodeRow(0, &row, &HashMap::new())?;
         let actual = rtRXingResult.getText();
-        let encRXingResultFast = writer.encode(toEncode, &BarcodeFormat::CODE_128, 0, 0)?;
+        let encRXingResultFast = WRITER.encode(toEncode, &BarcodeFormat::CODE_128, 0, 0)?;
         let row = encRXingResultFast.getRow(0, BitArray::new());
         let rtRXingResult = reader.decodeRow(0, &row, &HashMap::new())?;
         assert_eq!(rtRXingResult.getText(), actual);
diff --git a/src/oned/code_93_writer.rs b/src/oned/code_93_writer.rs
index 6a4bee9..c85ea42 100644
--- a/src/oned/code_93_writer.rs
+++ b/src/oned/code_93_writer.rs
@@ -95,12 +95,13 @@ impl Code93Writer {
      * @return 9
      * @deprecated without replacement; intended as an internal-only method
      */
+    #[allow(dead_code)]
     #[deprecated]
     fn appendPatternWithPatternStart(
         target: &mut [bool],
         pos: usize,
         pattern: &[usize],
-        startColor: bool,
+        _startColor: bool,
     ) -> u32 {
         let mut pos = pos;
         for bit in pattern {
@@ -219,7 +220,7 @@ impl Code93Writer {
 mod Code93WriterTestCase {
     use crate::{
         common::BitMatrixTestCase,
-        oned::{Code93Writer, OneDimensionalCodeWriter},
+        oned::{Code93Writer},
         BarcodeFormat, Writer,
     };
 
diff --git a/src/oned/ean_13_writer.rs b/src/oned/ean_13_writer.rs
index 0fa1fc1..acfe0f6 100644
--- a/src/oned/ean_13_writer.rs
+++ b/src/oned/ean_13_writer.rs
@@ -67,7 +67,7 @@ impl OneDimensionalCodeWriter for EAN13Writer {
             }
         }
 
-        EAN13Writer::checkNumeric(&contents);
+        EAN13Writer::checkNumeric(&contents)?;
 
         let firstDigit = contents.chars().nth(0).unwrap().to_digit(10).unwrap() as usize; //, 10);
         let parities = EAN13Reader::FIRST_DIGIT_ENCODINGS[firstDigit];
diff --git a/src/oned/multi_format_upc_ean_reader.rs b/src/oned/multi_format_upc_ean_reader.rs
index f6d6430..2772e3d 100644
--- a/src/oned/multi_format_upc_ean_reader.rs
+++ b/src/oned/multi_format_upc_ean_reader.rs
@@ -22,7 +22,7 @@ use crate::Reader;
 
 use super::EAN13Reader;
 use super::EAN8Reader;
-use super::StandIn;
+use super::STAND_IN;
 use super::UPCAReader;
 use super::UPCEReader;
 use super::{OneDReader, UPCEANReader};
@@ -124,7 +124,7 @@ impl OneDReader for MultiFormatUPCEANReader {
         hints: &crate::DecodingHintDictionary,
     ) -> Result<crate::RXingResult, crate::Exceptions> {
         // Compute this location once and reuse it on multiple implementations
-        let startGuardPattern = StandIn.findStartGuardPattern(row)?;
+        let startGuardPattern = STAND_IN.findStartGuardPattern(row)?;
         for reader in &self.0 {
             // for (UPCEANReader reader : readers) {
             let try_result =
diff --git a/src/oned/one_d_code_writer.rs b/src/oned/one_d_code_writer.rs
index 115d01d..29b7240 100644
--- a/src/oned/one_d_code_writer.rs
+++ b/src/oned/one_d_code_writer.rs
@@ -202,7 +202,7 @@ impl Writer for L {
     }
 }
 impl OneDimensionalCodeWriter for L {
-    fn encode_oned(&self, contents: &str) -> Result<Vec<bool>, Exceptions> {
+    fn encode_oned(&self, _contents: &str) -> Result<Vec<bool>, Exceptions> {
         todo!()
     }
 }
diff --git a/src/oned/rss/expanded/decoders/ai_013103_decoder.rs b/src/oned/rss/expanded/decoders/ai_013103_decoder.rs
index 5e63790..f5fb620 100644
--- a/src/oned/rss/expanded/decoders/ai_013103_decoder.rs
+++ b/src/oned/rss/expanded/decoders/ai_013103_decoder.rs
@@ -78,13 +78,13 @@ fn checkWeight(weight: u32) -> u32 {
 mod AI013103DecoderTest {
     use crate::oned::rss::expanded::decoders::abstract_decoder_test_utils::*;
 
-    const header: &str = "..X..";
+    const HEADER: &str = "..X..";
 
     #[test]
     fn test0131031() {
         let data = format!(
             "{}{}{}",
-            header, compressedGtin900123456798908, compressed15bitWeight1750
+            HEADER, compressedGtin900123456798908, compressed15bitWeight1750
         );
         let expected = "(01)90012345678908(3103)001750";
         assertCorrectBinaryString(&data, expected);
@@ -94,7 +94,7 @@ mod AI013103DecoderTest {
     fn test0131032() {
         let data = format!(
             "{}{}{}",
-            header, compressedGtin900000000000008, compressed15bitWeight0
+            HEADER, compressedGtin900000000000008, compressed15bitWeight0
         );
         let expected = "(01)90000000000003(3103)000000";
         assertCorrectBinaryString(&data, expected);
@@ -105,7 +105,7 @@ mod AI013103DecoderTest {
     fn test013103invalid() {
         let data = format!(
             "{}{}{}..",
-            header, compressedGtin900123456798908, compressed15bitWeight1750
+            HEADER, compressedGtin900123456798908, compressed15bitWeight1750
         );
         assertCorrectBinaryString(&data, "");
     }
diff --git a/src/oned/rss/expanded/decoders/ai_0132023203_decoder_test.rs b/src/oned/rss/expanded/decoders/ai_0132023203_decoder_test.rs
index f7c6c78..078f0d9 100644
--- a/src/oned/rss/expanded/decoders/ai_0132023203_decoder_test.rs
+++ b/src/oned/rss/expanded/decoders/ai_0132023203_decoder_test.rs
@@ -30,13 +30,13 @@ use super::abstract_decoder_test_utils::*;
  * @author Pablo Orduña, University of Deusto (pablo.orduna@deusto.es)
  */
 
-const header: &str = "..X.X";
+const HEADER: &str = "..X.X";
 
 #[test]
 fn test0132021() {
     let data = format!(
         "{}{}{}",
-        header, compressedGtin900123456798908, compressed15bitWeight1750
+        HEADER, compressedGtin900123456798908, compressed15bitWeight1750
     );
     let expected = "(01)90012345678908(3202)001750";
 
@@ -47,7 +47,7 @@ fn test0132021() {
 fn test0132031() {
     let data = format!(
         "{}{}{}",
-        header, compressedGtin900123456798908, compressed15bitWeight11750
+        HEADER, compressedGtin900123456798908, compressed15bitWeight11750
     );
     let expected = "(01)90012345678908(3203)001750";
 
diff --git a/src/oned/rss/expanded/decoders/ai_013x0x1x_decoder.rs b/src/oned/rss/expanded/decoders/ai_013x0x1x_decoder.rs
index faed415..5a65ad7 100644
--- a/src/oned/rss/expanded/decoders/ai_013x0x1x_decoder.rs
+++ b/src/oned/rss/expanded/decoders/ai_013x0x1x_decoder.rs
@@ -139,20 +139,20 @@ impl<'a> AI013x0x1xDecoder<'_> {
 mod AI013X0X1XDecoderTest {
     use crate::oned::rss::expanded::decoders::abstract_decoder_test_utils::*;
 
-    const header310x11: &str = "..XXX...";
-    const header320x11: &str = "..XXX..X";
-    const header310x13: &str = "..XXX.X.";
-    const header320x13: &str = "..XXX.XX";
-    const header310x15: &str = "..XXXX..";
-    const header320x15: &str = "..XXXX.X";
-    const header310x17: &str = "..XXXXX.";
-    const header320x17: &str = "..XXXXXX";
+    const HEADER310X11: &str = "..XXX...";
+    const HEADER320X11: &str = "..XXX..X";
+    const HEADER310X13: &str = "..XXX.X.";
+    const HEADER320X13: &str = "..XXX.XX";
+    const HEADER310X15: &str = "..XXXX..";
+    const HEADER320X15: &str = "..XXXX.X";
+    const HEADER310X17: &str = "..XXXXX.";
+    const HEADER320X17: &str = "..XXXXXX";
 
     #[test]
     fn test01310X1XendDate() {
         let data = format!(
             "{}{}{}{}",
-            header310x11,
+            HEADER310X11,
             compressedGtin900123456798908,
             compressed20bitWeight1750,
             compressedDateEnd
@@ -166,7 +166,7 @@ mod AI013X0X1XDecoderTest {
     fn test01310X111() {
         let data = format!(
             "{}{}{}{}",
-            header310x11,
+            HEADER310X11,
             compressedGtin900123456798908,
             compressed20bitWeight1750,
             compressedDateMarch12th2010
@@ -180,7 +180,7 @@ mod AI013X0X1XDecoderTest {
     fn test01320X111() {
         let data = format!(
             "{}{}{}{}",
-            header320x11,
+            HEADER320X11,
             compressedGtin900123456798908,
             compressed20bitWeight1750,
             compressedDateMarch12th2010
@@ -194,7 +194,7 @@ mod AI013X0X1XDecoderTest {
     fn test01310X131() {
         let data = format!(
             "{}{}{}{}",
-            header310x13,
+            HEADER310X13,
             compressedGtin900123456798908,
             compressed20bitWeight1750,
             compressedDateMarch12th2010
@@ -208,7 +208,7 @@ mod AI013X0X1XDecoderTest {
     fn test01320X131() {
         let data = format!(
             "{}{}{}{}",
-            header320x13,
+            HEADER320X13,
             compressedGtin900123456798908,
             compressed20bitWeight1750,
             compressedDateMarch12th2010
@@ -222,7 +222,7 @@ mod AI013X0X1XDecoderTest {
     fn test01310X151() {
         let data = format!(
             "{}{}{}{}",
-            header310x15,
+            HEADER310X15,
             compressedGtin900123456798908,
             compressed20bitWeight1750,
             compressedDateMarch12th2010
@@ -236,7 +236,7 @@ mod AI013X0X1XDecoderTest {
     fn test01320X151() {
         let data = format!(
             "{}{}{}{}",
-            header320x15,
+            HEADER320X15,
             compressedGtin900123456798908,
             compressed20bitWeight1750,
             compressedDateMarch12th2010
@@ -250,7 +250,7 @@ mod AI013X0X1XDecoderTest {
     fn test01310X171() {
         let data = format!(
             "{}{}{}{}",
-            header310x17,
+            HEADER310X17,
             compressedGtin900123456798908,
             compressed20bitWeight1750,
             compressedDateMarch12th2010
@@ -264,7 +264,7 @@ mod AI013X0X1XDecoderTest {
     fn test01320X171() {
         let data = format!(
             "{}{}{}{}",
-            header320x17,
+            HEADER320X17,
             compressedGtin900123456798908,
             compressed20bitWeight1750,
             compressedDateMarch12th2010
diff --git a/src/oned/rss/expanded/decoders/decoded_numeric.rs b/src/oned/rss/expanded/decoders/decoded_numeric.rs
index 1e2e993..5e6c552 100644
--- a/src/oned/rss/expanded/decoders/decoded_numeric.rs
+++ b/src/oned/rss/expanded/decoders/decoded_numeric.rs
@@ -48,7 +48,7 @@ impl DecodedNumeric {
     pub fn new(newPosition: usize, firstDigit: u32, secondDigit: u32) -> Result<Self, Exceptions> {
         // super(newPosition);
 
-        if firstDigit < 0 || firstDigit > 10 || secondDigit < 0 || secondDigit > 10 {
+        if /*firstDigit < 0 ||*/ firstDigit > 10 || /*secondDigit < 0 ||*/ secondDigit > 10 {
             return Err(Exceptions::FormatException(
                 ".getFormatInstance();".to_owned(),
             ));
diff --git a/src/oned/upc_ean_extension_2_support.rs b/src/oned/upc_ean_extension_2_support.rs
index da65417..3b12637 100644
--- a/src/oned/upc_ean_extension_2_support.rs
+++ b/src/oned/upc_ean_extension_2_support.rs
@@ -21,7 +21,7 @@ use crate::{
     RXingResultMetadataValue, RXingResultPoint,
 };
 
-use super::{upc_ean_reader, StandIn, UPCEANReader};
+use super::{upc_ean_reader, STAND_IN, UPCEANReader};
 
 /**
  * @see UPCEANExtension5Support
@@ -88,7 +88,7 @@ impl UPCEANExtension2Support {
         let mut x = 0;
         while x < 2 && rowOffset < end {
             // for (int x = 0; x < 2 && rowOffset < end; x++) {
-            let bestMatch = StandIn.decodeDigit(
+            let bestMatch = STAND_IN.decodeDigit(
                 row,
                 &mut counters,
                 rowOffset,
diff --git a/src/oned/upc_ean_extension_5_support.rs b/src/oned/upc_ean_extension_5_support.rs
index 4171442..dd34a0f 100644
--- a/src/oned/upc_ean_extension_5_support.rs
+++ b/src/oned/upc_ean_extension_5_support.rs
@@ -21,7 +21,7 @@ use crate::{
     RXingResultMetadataValue, RXingResultPoint,
 };
 
-use super::{upc_ean_reader, StandIn, UPCEANReader};
+use super::{upc_ean_reader, STAND_IN, UPCEANReader};
 
 /**
  * @see UPCEANExtension2Support
@@ -90,7 +90,7 @@ impl UPCEANExtension5Support {
         let mut x = 0;
         while x < 5 && rowOffset < end {
             // for (int x = 0; x < 5 && rowOffset < end; x++) {
-            let bestMatch = StandIn.decodeDigit(
+            let bestMatch = STAND_IN.decodeDigit(
                 row,
                 &mut counters,
                 rowOffset,
diff --git a/src/oned/upc_ean_extension_support.rs b/src/oned/upc_ean_extension_support.rs
index a127315..fc28209 100644
--- a/src/oned/upc_ean_extension_support.rs
+++ b/src/oned/upc_ean_extension_support.rs
@@ -16,7 +16,7 @@
 
 use crate::{common::BitArray, Exceptions, RXingResult};
 
-use super::{StandIn, UPCEANExtension2Support, UPCEANExtension5Support, UPCEANReader};
+use super::{STAND_IN, UPCEANExtension2Support, UPCEANExtension5Support, UPCEANReader};
 
 pub struct UPCEANExtensionSupport {
     twoSupport: UPCEANExtension2Support,
@@ -41,7 +41,7 @@ impl UPCEANExtensionSupport {
         rowOffset: usize,
     ) -> Result<RXingResult, Exceptions> {
         let extensionStartRange =
-            StandIn.findGuardPattern(row, rowOffset, false, &Self::EXTENSION_START_PATTERN)?;
+            STAND_IN.findGuardPattern(row, rowOffset, false, &Self::EXTENSION_START_PATTERN)?;
         if let Ok(res_1) = self
             .fiveSupport
             .decodeRow(rowNumber, row, &extensionStartRange)
diff --git a/src/oned/upc_ean_reader.rs b/src/oned/upc_ean_reader.rs
index 4ca58dc..d5ae703 100644
--- a/src/oned/upc_ean_reader.rs
+++ b/src/oned/upc_ean_reader.rs
@@ -245,7 +245,7 @@ pub trait UPCEANReader: OneDReader {
             Ok(())
         };
 
-        let try_result = attempt();
+        let _try_result = attempt();
         // if let Err(Exceptions::ReaderException(_)) = try_result {
         // } else if try_result.is_err() {
         //     return Err(try_result.err().unwrap());
@@ -564,4 +564,4 @@ impl Reader for StandInStruct {
     }
 }
 
-pub(crate) const StandIn: StandInStruct = StandInStruct {};
+pub(crate) const STAND_IN: StandInStruct = StandInStruct {};
diff --git a/src/pdf417/decoder/detection_result.rs b/src/pdf417/decoder/detection_result.rs
index 82481ab..c891462 100644
--- a/src/pdf417/decoder/detection_result.rs
+++ b/src/pdf417/decoder/detection_result.rs
@@ -19,7 +19,7 @@ use std::{fmt::Display, rc::Rc};
 use crate::pdf417::pdf_417_common;
 
 use super::{
-    BarcodeMetadata, BoundingBox, Codeword, DetectionRXingResultColumn,
+    BarcodeMetadata, BoundingBox, Codeword,
     DetectionRXingResultColumnTrait, DetectionRXingResultRowIndicatorColumn,
 };
 
@@ -41,7 +41,7 @@ impl DetectionRXingResult {
         boundingBox: Rc<BoundingBox>,
     ) -> DetectionRXingResult {
         let mut columns = Vec::new();
-        for i in 0..(barcodeMetadata.getColumnCount() as usize + 2) {
+        for _i in 0..(barcodeMetadata.getColumnCount() as usize + 2) {
             columns.push(None);
         }
         DetectionRXingResult {
diff --git a/src/pdf417/decoder/detection_result_row_indicator_column.rs b/src/pdf417/decoder/detection_result_row_indicator_column.rs
index ffb9e4b..eecb840 100644
--- a/src/pdf417/decoder/detection_result_row_indicator_column.rs
+++ b/src/pdf417/decoder/detection_result_row_indicator_column.rs
@@ -14,12 +14,10 @@
  * limitations under the License.
  */
 
-use std::fmt::Display;
-
 use crate::{pdf417::pdf_417_common, ResultPoint};
 
 use super::{
-    BarcodeMetadata, BarcodeValue, BoundingBox, Codeword, DetectionRXingResultColumn,
+    BarcodeMetadata, BarcodeValue, Codeword, DetectionRXingResultColumn,
     DetectionRXingResultColumnTrait,
 };
 
diff --git a/src/pdf417/decoder/ec/abstract_error_correction_test_case.rs b/src/pdf417/decoder/ec/abstract_error_correction_test_case.rs
index 19ebdfb..e7348d3 100644
--- a/src/pdf417/decoder/ec/abstract_error_correction_test_case.rs
+++ b/src/pdf417/decoder/ec/abstract_error_correction_test_case.rs
@@ -30,6 +30,7 @@ pub fn corrupt(received: &mut [u32], howMany: u32, random: &mut rand::rngs::Thre
     }
 }
 
+#[allow(dead_code)]
 pub fn erase(received: &mut [u32], howMany: u32, random: &mut rand::rngs::ThreadRng) -> Vec<u32> {
     let mut erased = vec![false; received.len()]; //BitSet::new(received.len());
     let mut erasures = vec![0_u32; howMany as usize];
diff --git a/src/pdf417/decoder/ec/error_correction.rs b/src/pdf417/decoder/ec/error_correction.rs
index e3f859b..ecef469 100644
--- a/src/pdf417/decoder/ec/error_correction.rs
+++ b/src/pdf417/decoder/ec/error_correction.rs
@@ -27,7 +27,7 @@ use lazy_static::lazy_static;
 
 lazy_static! {
   // static ref PDF417_GF : Rc<&ModulusGF> =  Rc::new(&ModulusGF::new(NUMBER_OF_CODEWORDS, 3));
-  static ref fld_interior : ModulusGF = ModulusGF::new(NUMBER_OF_CODEWORDS, 3);
+  static ref FLD_INTERIOR : ModulusGF = ModulusGF::new(NUMBER_OF_CODEWORDS, 3);
 }
 
 /**
@@ -52,7 +52,7 @@ pub fn decode<'a>(
     numECCodewords: u32,
     erasures: &mut [u32],
 ) -> Result<usize, Exceptions> {
-    let field: Rc<&'static ModulusGF> = Rc::new(&fld_interior);
+    let field: Rc<&'static ModulusGF> = Rc::new(&FLD_INTERIOR);
     let poly = ModulusPoly::new(field.clone(), received.to_vec())?;
     let mut S = vec![0u32; numECCodewords as usize];
     let mut error = false;
diff --git a/src/pdf417/decoder/ec/error_correction_test_case.rs b/src/pdf417/decoder/ec/error_correction_test_case.rs
index 19779ce..e467c93 100644
--- a/src/pdf417/decoder/ec/error_correction_test_case.rs
+++ b/src/pdf417/decoder/ec/error_correction_test_case.rs
@@ -16,7 +16,7 @@
 
 use rand::Rng;
 
-use crate::{datamatrix::encoder::error_correction, Exceptions};
+use crate::{ Exceptions};
 
 use super::{
     abstract_error_correction_test_case::{corrupt, getRandom},
@@ -56,7 +56,7 @@ fn testNoError() {
 
 #[test]
 fn testExplicitError() {
-    let mut random = getRandom();
+    
     for i in 0..PDF417_TEST_WITH_EC.len() {
         // for (int i = 0; i < PDF417_TEST_WITH_EC.length; i++) {
         let mut received = PDF417_TEST_WITH_EC.clone();
diff --git a/src/pdf417/decoder/ec/modulus_gf.rs b/src/pdf417/decoder/ec/modulus_gf.rs
index 3a1bdba..2dbf451 100644
--- a/src/pdf417/decoder/ec/modulus_gf.rs
+++ b/src/pdf417/decoder/ec/modulus_gf.rs
@@ -16,12 +16,8 @@
 
 //public static final ModulusGF PDF417_GF = new ModulusGF(PDF417Common.NUMBER_OF_CODEWORDS, 3);
 
-use std::rc::Rc;
-
 use crate::Exceptions;
 
-use super::ModulusPoly;
-
 /**
  * <p>A field based on powers of a generator integer, modulo some modulus.</p>
  *
diff --git a/src/pdf417/decoder/pdf_417_decoder_test_case.rs b/src/pdf417/decoder/pdf_417_decoder_test_case.rs
index 7305fb7..73be9f3 100644
--- a/src/pdf417/decoder/pdf_417_decoder_test_case.rs
+++ b/src/pdf417/decoder/pdf_417_decoder_test_case.rs
@@ -461,7 +461,7 @@ fn encodeDecodeWithAll(
 
 fn getEndIndex(length: u32, chars: &[char]) -> u32 {
     let decimalLength: f64 = (chars.len() as f64).log10(); //Math.log10(chars.length);
-    10_f64.powf((decimalLength * length as f64)).ceil() as u32
+    10_f64.powf(decimalLength * length as f64).ceil() as u32
     // (decimalLength*length as f64).powi(10).ceil() as u32
     // (decimalLength*length as f64).powi(10).ceil() as u32
     //  Math.ceil(Math.pow(10, decimalLength * length))
diff --git a/src/qrcode/decoder/DataMaskTestCase.rs b/src/qrcode/decoder/data_mask_testcase.rs
similarity index 91%
rename from src/qrcode/decoder/DataMaskTestCase.rs
rename to src/qrcode/decoder/data_mask_testcase.rs
index 543e032..a57496a 100644
--- a/src/qrcode/decoder/DataMaskTestCase.rs
+++ b/src/qrcode/decoder/data_mask_testcase.rs
@@ -32,14 +32,14 @@ fn testMask0() {
 
 #[test]
 fn testMask1() {
-    testMaskAcrossDimensions(DataMask::DATA_MASK_001, |i, j| i % 2 == 0);
-    testMaskAcrossDimensionsU8(1, |i, j| i % 2 == 0);
+    testMaskAcrossDimensions(DataMask::DATA_MASK_001, |i, _j| i % 2 == 0);
+    testMaskAcrossDimensionsU8(1, |i, _j| i % 2 == 0);
 }
 
 #[test]
 fn testMask2() {
-    testMaskAcrossDimensions(DataMask::DATA_MASK_010, |i, j| j % 3 == 0);
-    testMaskAcrossDimensionsU8(2, |i, j| j % 3 == 0);
+    testMaskAcrossDimensions(DataMask::DATA_MASK_010, |_i, j| j % 3 == 0);
+    testMaskAcrossDimensionsU8(2, |_i, j| j % 3 == 0);
 }
 
 #[test]
diff --git a/src/qrcode/decoder/mod.rs b/src/qrcode/decoder/mod.rs
index 495b4b3..d559a37 100644
--- a/src/qrcode/decoder/mod.rs
+++ b/src/qrcode/decoder/mod.rs
@@ -10,7 +10,7 @@ mod qr_code_decoder_meta_data;
 mod version;
 
 #[cfg(test)]
-mod DataMaskTestCase;
+mod data_mask_testcase;
 #[cfg(test)]
 mod DecodedBitStreamParserTestCase;
 #[cfg(test)]
diff --git a/src/qrcode/detector/DetectorTest.rs b/src/qrcode/detector/cetector_test.rs
similarity index 98%
rename from src/qrcode/detector/DetectorTest.rs
rename to src/qrcode/detector/cetector_test.rs
index d4278e8..34e4204 100644
--- a/src/qrcode/detector/DetectorTest.rs
+++ b/src/qrcode/detector/cetector_test.rs
@@ -40,6 +40,7 @@ fn test_encode_decode(value: &str) {
 }
 
 // Zooms a bit matrix so that each bit is factor x factor
+#[allow(dead_code)]
 fn make_larger(input: &BitMatrix, factor: u32) -> BitMatrix {
     let width = input.getWidth();
     let mut output = BitMatrix::with_single_dimension(width * factor);
diff --git a/src/qrcode/detector/mod.rs b/src/qrcode/detector/mod.rs
index f0eb510..eee527e 100644
--- a/src/qrcode/detector/mod.rs
+++ b/src/qrcode/detector/mod.rs
@@ -15,4 +15,4 @@ pub use finder_pattern_info::*;
 pub use qrcode_detector_result::*;
 
 #[cfg(test)]
-mod DetectorTest;
+mod cetector_test;
diff --git a/src/qrcode/encoder/BitVectorTestCase.rs b/src/qrcode/encoder/bit_vector_testcase.rs
similarity index 97%
rename from src/qrcode/encoder/BitVectorTestCase.rs
rename to src/qrcode/encoder/bit_vector_testcase.rs
index 0797fe8..20056d5 100644
--- a/src/qrcode/encoder/BitVectorTestCase.rs
+++ b/src/qrcode/encoder/bit_vector_testcase.rs
@@ -128,7 +128,7 @@ fn testXOR() {
     v1.appendBits(0x5555aaaa, 32).expect("append");
     let mut v2 = BitArray::new();
     v2.appendBits(0xaaaa5555, 32).expect("append");
-    v1.xor(&v2);
+    v1.xor(&v2).expect("xor");
     assert_eq!(0xffffffff, getUnsignedInt(&v1));
 }
 
@@ -137,8 +137,8 @@ fn testXOR2() {
     let mut v1 = BitArray::new();
     v1.appendBits(0x2a, 7).expect("append"); // 010 1010
     let mut v2 = BitArray::new();
-    v2.appendBits(0x55, 7); // 101 0101
-    v1.xor(&v2);
+    v2.appendBits(0x55, 7).expect("append"); // 101 0101
+    v1.xor(&v2).expect("xor");
     assert_eq!(0xfe000000, getUnsignedInt(&v1)); // 1111 1110
 }
 
diff --git a/src/qrcode/encoder/encoder.rs b/src/qrcode/encoder/encoder.rs
index f3e4377..5c9dc5b 100644
--- a/src/qrcode/encoder/encoder.rs
+++ b/src/qrcode/encoder/encoder.rs
@@ -13,25 +13,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-// package com.google.zxing.qrcode.encoder;
-
-// import com.google.zxing.EncodeHintType;
-// import com.google.zxing.WriterException;
-// import com.google.zxing.common.BitArray;
-// import com.google.zxing.common.StringUtils;
-// import com.google.zxing.common.CharacterSetECI;
-// import com.google.zxing.common.reedsolomon.GenericGF;
-// import com.google.zxing.common.reedsolomon.ReedSolomonEncoder;
-// import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
-// import com.google.zxing.qrcode.decoder.Mode;
-// import com.google.zxing.qrcode.decoder.Version;
-
-// import java.nio.charset.Charset;
-// import java.nio.charset.StandardCharsets;
-// import java.util.ArrayList;
-// import java.util.Collection;
-// import java.util.Map;
+/**
+ * @author satorux@google.com (Satoru Takabayashi) - creator
+ * @author dswitkin@google.com (Daniel Switkin) - ported from C++
+ */
 
 use std::collections::HashMap;
 
@@ -51,11 +36,6 @@ use crate::{
 
 use super::{mask_util, matrix_util, BlockPair, ByteMatrix, MinimalEncoder, QRCode};
 
-/**
- * @author satorux@google.com (Satoru Takabayashi) - creator
- * @author dswitkin@google.com (Daniel Switkin) - ported from C++
- */
-
 lazy_static! {
     static ref SHIFT_JIS_CHARSET: EncodingRef =
         encoding::label::encoding_from_whatwg_label("SJIS").unwrap();
diff --git a/src/qrcode/encoder/MatrixUtilTestCase.rs b/src/qrcode/encoder/matrix_util_testcase.rs
similarity index 99%
rename from src/qrcode/encoder/MatrixUtilTestCase.rs
rename to src/qrcode/encoder/matrix_util_testcase.rs
index 19ec85c..63a9601 100644
--- a/src/qrcode/encoder/MatrixUtilTestCase.rs
+++ b/src/qrcode/encoder/matrix_util_testcase.rs
@@ -245,7 +245,7 @@ fn testBuildMatrix() {
     let mut bits = BitArray::new();
     for c in bytes {
         // for (char c: bytes) {
-        bits.appendBits(c, 8);
+        bits.appendBits(c, 8).expect("append");
     }
     let mut matrix = ByteMatrix::new(21, 21);
     matrix_util::buildMatrix(
diff --git a/src/qrcode/encoder/minimal_encoder.rs b/src/qrcode/encoder/minimal_encoder.rs
index 4074890..485c735 100644
--- a/src/qrcode/encoder/minimal_encoder.rs
+++ b/src/qrcode/encoder/minimal_encoder.rs
@@ -616,8 +616,8 @@ pub struct Edge {
     characterLength: u32,
     previous: Option<Rc<Edge>>,
     cachedTotalSize: u32,
-    encoders: ECIEncoderSet,
-    stringToEncode: Vec<String>,
+    _encoders: ECIEncoderSet,
+    _stringToEncode: Vec<String>,
 }
 impl Edge {
     pub fn new(
@@ -641,7 +641,7 @@ impl Edge {
             charsetEncoderIndex: nci,
             characterLength,
             previous: previous.clone(),
-            stringToEncode: stringToEncode.clone(),
+            _stringToEncode: stringToEncode.clone(),
             cachedTotalSize: {
                 let mut size = if previous.is_some() {
                     previous.as_ref().unwrap().cachedTotalSize
@@ -713,7 +713,7 @@ impl Edge {
                 // }
                 size
             },
-            encoders,
+            _encoders : encoders,
         }
         // this.mode = mode;
         // this.fromPosition = fromPosition;
diff --git a/src/qrcode/encoder/mod.rs b/src/qrcode/encoder/mod.rs
index ba5ae87..ea3e56e 100644
--- a/src/qrcode/encoder/mod.rs
+++ b/src/qrcode/encoder/mod.rs
@@ -12,12 +12,12 @@ pub use minimal_encoder::*;
 pub use qr_code::*;
 
 #[cfg(test)]
-mod BitVectorTestCase;
+mod bit_vector_testcase;
 #[cfg(test)]
 mod EncoderTestCase;
 #[cfg(test)]
 mod MaskUtilTestCase;
 #[cfg(test)]
-mod MatrixUtilTestCase;
+mod matrix_util_testcase;
 #[cfg(test)]
 mod QRCodeTestCase;
diff --git a/src/rxing_result_metadata.rs b/src/rxing_result_metadata.rs
index 4e02d0b..5e081ec 100644
--- a/src/rxing_result_metadata.rs
+++ b/src/rxing_result_metadata.rs
@@ -16,7 +16,7 @@
 
 //package com.google.zxing;
 
-use std::{any::Any, rc::Rc};
+use std::{ rc::Rc};
 
 use crate::pdf417::PDF417RXingResultMetadata;
 
diff --git a/tests/EAN8BlackBox1TestCase.rs b/tests/ean_8_black_box_1_testcase.rs
similarity index 100%
rename from tests/EAN8BlackBox1TestCase.rs
rename to tests/ean_8_black_box_1_testcase.rs
diff --git a/tests/InvertedDataMatrixBlackBoxTestCase.rs b/tests/inverted_data_matrix_black_box_testcase.rs
similarity index 100%
rename from tests/InvertedDataMatrixBlackBoxTestCase.rs
rename to tests/inverted_data_matrix_black_box_testcase.rs
diff --git a/tests/PDF417BlackBox4TestCase.rs b/tests/pdf_417_black_box_4_testcase.rs
similarity index 100%
rename from tests/PDF417BlackBox4TestCase.rs
rename to tests/pdf_417_black_box_4_testcase.rs
diff --git a/tests/pdf_417_blackbox_tests.rs b/tests/pdf_417_blackbox_tests.rs
index b85b1e7..2d544c8 100644
--- a/tests/pdf_417_blackbox_tests.rs
+++ b/tests/pdf_417_blackbox_tests.rs
@@ -1,4 +1,4 @@
-use rxing::{qrcode::QRCodeReader, BarcodeFormat, MultiFormatReader};
+use rxing::{MultiFormatReader};
 
 mod common;
 
diff --git a/tests/UPCEANExtensionBlackBox1TestCase.rs b/tests/upc_ean_extension_black_box_1_testcase.rs
similarity index 100%
rename from tests/UPCEANExtensionBlackBox1TestCase.rs
rename to tests/upc_ean_extension_black_box_1_testcase.rs