[
    MappedRustDiagnostic {
        url: Url {
            scheme: "file",
            cannot_be_a_base: false,
            username: "",
            password: None,
            host: None,
            port: None,
            path: "/test/runtime/compiler_support.rs",
            query: None,
            fragment: None,
        },
        diagnostic: Diagnostic {
            range: Range {
                start: Position {
                    line: 47,
                    character: 64,
                },
                end: Position {
                    line: 47,
                    character: 69,
                },
            },
            severity: Some(
                Error,
            ),
            code: Some(
                String(
                    "E0308",
                ),
            ),
            code_description: Some(
                CodeDescription {
                    href: Url {
                        scheme: "https",
                        cannot_be_a_base: false,
                        username: "",
                        password: None,
                        host: Some(
                            Domain(
                                "doc.rust-lang.org",
                            ),
                        ),
                        port: None,
                        path: "/error-index.html",
                        query: None,
                        fragment: Some(
                            "E0308",
                        ),
                    },
                },
            ),
            source: Some(
                "rustc",
            ),
            message: "mismatched types\nexpected usize, found u32",
            related_information: None,
            tags: None,
            data: None,
        },
        fix: None,
    },
]