Enhance diff_check with more unicode et al

[calebcartwright]

Follow up action item from a topic I raised in #5864 (comment) relative to adding some additional test repos to improve our coverage of string formatting with various characters and encodings.

One suggested repo to include is https://github.com/unicode-org/icu4x as well as some from https://github.com/unicode-rs

I opted to simply mention icu4x as part of this instead of directly adding it because I noticed that repo is using cargo make and I didn't have bandwidth to determine if that'd cause any issues/require any additional changes to our script.

New repos can be wired up by adding a call site with respective args here:

rustfmt/ci/check_diff.sh

Lines 170 to 192 in b069aac

	check_repo "https://github.com/rust-lang/rust.git" rust-lang-rust
	check_repo "https://github.com/rust-lang/cargo.git" cargo
	check_repo "https://github.com/rust-lang/miri.git" miri
	check_repo "https://github.com/rust-lang/rust-analyzer.git" rust-analyzer
	check_repo "https://github.com/bitflags/bitflags.git" bitflags
	check_repo "https://github.com/rust-lang/log.git" log
	check_repo "https://github.com/rust-lang/mdBook.git" mdBook
	check_repo "https://github.com/rust-lang/packed_simd.git" packed_simd
	check_repo "https://github.com/rust-lang/rust-semverver.git" check_repo
	check_repo "https://github.com/Stebalien/tempfile.git" tempfile
	check_repo "https://github.com/rust-lang/futures-rs.git" futures-rs
	check_repo "https://github.com/dtolnay/anyhow.git" anyhow
	check_repo "https://github.com/dtolnay/thiserror.git" thiserror
	check_repo "https://github.com/dtolnay/syn.git" syn
	check_repo "https://github.com/serde-rs/serde.git" serde
	check_repo "https://github.com/rust-lang/rustlings.git" rustlings
	check_repo "https://github.com/rust-lang/rustup.git" rustup
	check_repo "https://github.com/SergioBenitez/Rocket.git" Rocket
	check_repo "https://github.com/rustls/rustls.git" rustls
	check_repo "https://github.com/rust-lang/rust-bindgen.git" rust-bindgen
	check_repo "https://github.com/hyperium/hyper.git" hyper
	check_repo "https://github.com/actix/actix.git" actix
	check_repo "https://github.com/denoland/deno.git" denoland_deno

[raymondyegon]

@rustbot claim

[ytmimi]

@calebcartwright I don't think the use of cargo make on any project we test would be an issue. The diff check job just runs rustfmt againsg all .rs files it finds in the repo.

rustfmt/ci/check_diff.sh

Lines 59 to 62 in f89cd3c

	for i in `find . | grep "\.rs$"`
	do
	$1 --unstable-features --skip-children --check --color=always $config $i >> $2 2>/dev/null
	done

[calebcartwright]

Forgot we were running rustfmt directly. The only potential downside to this would be our ability to pull in any target repositories that needed 2018+ edition & didn't have edition defined in a rustfmt.toml file.

Orthogonal to this particular issue, but at some point would like to think/talk through whether that has any implications once style_edition enters the ecosystem

[ytmimi]

@calebcartwright good point. I guess if we landed support for cargo fmt to be passed individual files then that would mostly solve the edition issue. I'm nearly 100% sure style_edition is going to be implemented in such a way that we'll derive it from the --edition if you don't explicitly configure style_edition.

[rufevean]

@ytmimi , is this issue still open to be worked on as the old assignee doesnt seem like he is working on this anymore?

[ytmimi]

@rufevean yeah this one is still open

[rufevean]

got it, thank you

[rufevean]

@rustbot claim

[rufevean]

i have added the follow repos into ./check_diff.sh file and i executed it . i am receiving an error stating
./check_diff.sh: line 148: /tmp/rustfmt-IVGzB32u/feature_rustfmt: No such file or directory .
is this part of the issue or am i missing something?

    check_repo "https://github.com/unicode-org/icu4x.git" icu4x
    check_repo "https://github.com/unicode-rs/unicode-segmentation.git" unicode-segmentation
    check_repo "https://github.com/unicode-rs/unicode-normalization.git" unicode-normalization

[ytmimi]

it's unclear what the issue is here. Are you able to run the script on your machine without adding those new repos?