Clean up some manual debug impls

[mejrs]

Some of these can just be derives. Others omitted fields, deliberately or not.

For example, the annotate emitter debug now looks like:

AnnotateSnippetEmitter {
    dst: <writer@0x9069b55c60>,
    sm: Some(
        SourceMap {
            files: RwLock(
                RwLock {
                    data: [
                        "C:\\Users\\bruno\\Rust\\rust\\tests\\ui\\consts\\bad-array-size-in-type-err.rs",
                        "/rustc/FAKE_PREFIX\\library\\std\\src\\lib.rs",
                        "/rustc/FAKE_PREFIX\\library\\std\\src\\../../core/src/attribute_docs.rs",
                        "/rustc/FAKE_PREFIX\\library\\std\\src\\../../core/src/keyword_docs.rs",
                        "/rustc/FAKE_PREFIX\\library\\std\\src\\../../core/src/primitive_docs.rs",
                        "/rustc/FAKE_PREFIX\\library\\std\\src\\macros.rs",
                        "/rustc/FAKE_PREFIX\\library\\std\\src\\thread\\local.rs",
                        "/rustc/FAKE_PREFIX\\library\\std\\src\\prelude\\mod.rs",
                        "/rustc/FAKE_PREFIX\\library\\std\\src\\prelude\\v1.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\lib.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\clone.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\marker.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\default.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\cmp.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\ops\\mod.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\ops\\drop.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\ops\\function.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\ops\\async_function.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\convert\\mod.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\iter\\mod.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\iter\\traits\\mod.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\iter\\traits\\double_ended.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\iter\\traits\\exact_size.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\iter\\traits\\collect.rs",
                        "/rustc/FAKE_PREFIX\\library\\core\\src\\iter\\traits\\iterator.rs",
                        "/rustc/FAKE_PREFIX\\library\\alloc\\src\\lib.rs",
                        "/rustc/FAKE_PREFIX\\library\\alloc\\src\\borrow.rs",
                        "/rustc/FAKE_PREFIX\\library\\alloc\\src\\string.rs",
                    ],
                },
            ),
            file_loader: <file_loader@0x1f813386448>,
            path_mapping: FilePathMapping {
                mapping: [],
                filename_remapping_scopes: RemapPathScopeComponents(
                    MACRO | DIAGNOSTICS | DEBUGINFO | COVERAGE | DOCUMENTATION,
                ),
            },
            working_dir: RealFileName {
                local: Some(
                    InnerRealFileName {
                        name: "C:\\Users\\bruno\\Rust\\rust",
                        working_directory: "",
                        embeddable_name: "C:\\Users\\bruno\\Rust\\rust",
                    },
                ),
                maybe_remapped: InnerRealFileName {
                    name: "C:\\Users\\bruno\\Rust\\rust",
                    working_directory: "",
                    embeddable_name: "C:\\Users\\bruno\\Rust\\rust",
                },
                scopes: RemapPathScopeComponents(
                    0x0,
                ),
            },
            hash_kind: Sha256,
            checksum_hash_kind: None,
        },
    ),
    short_message: false,
    ui_testing: true,
    ignored_directories_in_source_blocks: [
        "C:\\Users\\bruno\\.cargo",
        "C:\\Users\\bruno\\Rust\\rust\\vendor",
    ],
    diagnostic_width: None,
    macro_backtrace: false,
    track_diagnostics: false,
    terminal_url: No,
    theme: Ascii,
}

[rustbot]

Some changes occurred in compiler/rustc_attr_parsing

cc @jdonszelmann, @JonathanBrouwer

rustc_errors::annotate_snippet_emitter_writer was changed

cc @Muscraft

[rustbot]

r? @khyperia

rustbot has assigned @khyperia.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

Why was this reviewer chosen?

The reviewer was selected based on:

• Owners of files modified in this PR: compiler
• compiler expanded to 75 candidates
• Random selection from 16 candidates

[khyperia]

heck yea

@bors r+ rollup

[rust-bors]

📌 Commit b5c330c has been approved by khyperia

It is now in the queue for this repository.