Issue report welcome

[XingXingDeTomato]

No description provided.

[1099438829]

很多无用的警告，都是冗余的变量导致的

warning: method by_name_bool is never used
--> target/patch/protobuf-parse-3.4.0/src/pure/convert/option_resolver.rs:173:8
|
170 | pub(crate) trait ProtobufOptions {
| --------------- method in this trait
...
173 | fn by_name_bool(&self, name: &str) -> anyhow::Result<Option> {
| ^^^^^^^^^^^^
|
= note: #[warn(dead_code)] on by default

warning: variant NotUtf8 is never constructed
--> target/patch/protobuf-parse-3.4.0/src/pure/parser.rs:53:5
|
46 | pub(crate) enum ParserError {
| ----------- variant in this enum
...
53 | NotUtf8,
| ^^^^^^^
|
= note: ParserError has a derived impl for the trait Debug, but this is intentionally ignored during dead code analysis

warning: trait ToU8 is never used
--> target/patch/protobuf-parse-3.4.0/src/pure/parser.rs:115:7
|
115 | trait ToU8 {
| ^^^^

warning: trait ToChar is never used
--> target/patch/protobuf-parse-3.4.0/src/pure/parser.rs:127:7
|
127 | trait ToChar {
| ^^^^^^

warning: struct RelPathBuf is never constructed
--> target/patch/protobuf-parse-3.4.0/src/rel_path.rs:13:19
|
13 | pub(crate) struct RelPathBuf {
| ^^^^^^^^^^

warning: associated function new is never used
--> target/patch/protobuf-parse-3.4.0/src/rel_path.rs:18:19
|
17 | impl RelPath {
| ------------ associated function in this implementation
18 | pub(crate) fn new(path: &Path) -> &RelPath {
| ^^^