Update Rust crate thiserror to v2 (#804)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [thiserror](https://redirect.github.com/dtolnay/thiserror) |
dependencies | major | `1` -> `2` |

---

### Release Notes

<details>
<summary>dtolnay/thiserror (thiserror)</summary>

###
[`v2.0.0`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.0)

[Compare
Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.68...2.0.0)

#### Breaking changes

- Referencing keyword-named fields by a raw identifier like `{r#type}`
inside a format string is no longer accepted; simply use the unraw name
like `{type}`
([#&#8203;347](https://redirect.github.com/dtolnay/thiserror/issues/347))

This aligns thiserror with the standard library's formatting macros,
which gained support for implicit argument capture later than the
release of this feature in thiserror 1.x.

    ```rust
    #[derive(Error, Debug)]
    #[error("... {type} ...")]  // Before: {r#type}
    pub struct Error {
        pub r#type: Type,
    }
    ```

- Trait bounds are no longer inferred on fields whose value is shadowed
by an explicit named argument in a format message
([#&#8203;345](https://redirect.github.com/dtolnay/thiserror/issues/345))

    ```rust
    // Before: impl<T: Octal> Display for Error<T>
    // After: impl<T> Display for Error<T>
    #[derive(Error, Debug)]
    #[error("{thing:o}", thing = "...")]
    pub struct Error<T> {
        thing: T,
    }
    ```

- Tuple structs and tuple variants can no longer use numerical `{0}`
`{1}` access at the same time as supplying extra positional arguments
for a format message, as this makes it ambiguous whether the number
refers to a tuple field vs a different positional arg
([#&#8203;354](https://redirect.github.com/dtolnay/thiserror/issues/354))

    ```rust
    #[derive(Error, Debug)]
    #[error("ambiguous: {0} {}", $N)]
// ^^^ Not allowed, use #[error("... {0} {n}", n = $N)]
    pub struct TupleError(i32);
    ```

- Code containing invocations of thiserror's `derive(Error)` must now
have a direct dependency on the `thiserror` crate regardless of the
error data structure's contents
([#&#8203;368](https://redirect.github.com/dtolnay/thiserror/issues/368),
[#&#8203;369](https://redirect.github.com/dtolnay/thiserror/issues/369),
[#&#8203;370](https://redirect.github.com/dtolnay/thiserror/issues/370),
[#&#8203;372](https://redirect.github.com/dtolnay/thiserror/issues/372))

#### Features

- Support disabling thiserror's standard library dependency by disabling
the default "std" Cargo feature: `thiserror = { version = "2",
default-features = false }`
([#&#8203;373](https://redirect.github.com/dtolnay/thiserror/issues/373))

- Support using `r#source` as field name to opt out of a field named
"source" being treated as an error's `Error::source()`
([#&#8203;350](https://redirect.github.com/dtolnay/thiserror/issues/350))

    ```rust
    #[derive(Error, Debug)]
    #[error("{source} ==> {destination}")]
    pub struct Error {
        r#source: char,
        destination: char,
    }

    let error = Error { source: 'S', destination: 'D' };
    ```

- Infinite recursion in a generated Display impl now produces an
`unconditional_recursion` warning
([#&#8203;359](https://redirect.github.com/dtolnay/thiserror/issues/359))

    ```rust
    #[derive(Error, Debug)]
    #[error("??? {self}")]
    pub struct Error;
    ```

- A new attribute `#[error(fmt = path::to::myfmt)]` can be used to write
formatting logic for an enum variant out-of-line
([#&#8203;367](https://redirect.github.com/dtolnay/thiserror/issues/367))

    ```rust
    #[derive(Error, Debug)]
    pub enum Error {
        #[error(fmt = demo_fmt)]
        Demo { code: u16, message: Option<String> },
    }

fn demo_fmt(code: &u16, message: &Option<String>, formatter: &mut
fmt::Formatter) -> fmt::Result {
        write!(formatter, "{code}")?;
        if let Some(msg) = message {
            write!(formatter, " - {msg}")?;
        }
        Ok(())
    }
    ```

- Enums with an enum-level format message are now able to have
individual variants that are `transparent` to supersede the enum-level
message
([#&#8203;366](https://redirect.github.com/dtolnay/thiserror/issues/366))

    ```rust
    #[derive(Error, Debug)]
    #[error("my error {0}")]
    pub enum Error {
        Json(#[from] serde_json::Error),
        Yaml(#[from] serde_yaml::Error),
        #[error(transparent)]
        Other(#[from] anyhow::Error),
    }
    ```

</details>

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Author: gwilymk

agb-debug/Cargo.toml

@@ -12,7 +12,7 @@ addr2line = { version = "0.24", default-features = false, features = ["rustc-dem
 gimli = { version = "0.31", default-features = false, features = ["endian-reader", "std"] }
 object = { version = "0.36", default-features = false, features = ["read"] }
 
-thiserror = "1"
+thiserror = "2"
 clap = { version = "4", features = ["derive"] }
 colored = "2"
 rmp-serde = "1"

emulator/mgba/Cargo.toml

@@ -8,4 +8,4 @@ edition = "2021"
 [dependencies]
 libc = "0.2"
 mgba-sys = { version = "0.1.0", path = "../mgba-sys" }
-thiserror = "1"
+thiserror = "2"