Remove manual <[u8]>::escape_ascii

[kadiwa4]

@rustbot label: +C-cleanup

[rust-highfive]

r? @jackh726

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[rustbot]

Hey! It looks like you've submitted a new PR for the library teams!

If this PR contains changes to any rust-lang/rust public library APIs then please comment with @rustbot label +T-libs-api -T-libs to tag it appropriately. If this PR contains changes to any unstable APIs please edit the PR description to add a link to the relevant API Change Proposal or create one if you haven't already. If you're unsure where your change falls no worries, just leave it as is and the reviewer will take a look and make a decision to forward on if necessary.

Examples of T-libs-api changes:

• Stabilizing library features
• Introducing insta-stable changes such as new implementations of existing stable traits on existing stable types
• Introducing new or changing existing unstable library APIs (excluding permanently unstable features / features without a tracking issue)
• Changing public documentation in ways that create new stability guarantees
• Changing observable runtime behavior of library APIs

[jackh726]

@bors r+ rollup

[bors]

📌 Commit a297631 has been approved by jackh726

It is now in the queue for this repository.

[bors]

⌛ Testing commit a297631 with merge 3ed623c47a68b1bfd50c6a377eedd276b447c1ee...

[Dylan-DPC]

@bors retry yield to rollup

[bors]

⌛ Testing commit a297631 with merge 3bfca4c83ec6bc361ae56dd76507d174f1723fbc...

[bors]

💔 Test failed - checks-actions

[Dylan-DPC]

@bors retry

[rust-log-analyzer]

A job failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

Prepare workflow directory
Prepare all required actions
Getting action download info
Download action repository 'actions/checkout@v3' (SHA:2541b1294d2704b0964813337f33b291d3f8596b)
##[warning]Failed to download action 'https://api.github.com/repos/actions/checkout/zipball/2541b1294d2704b0964813337f33b291d3f8596b'. Error: No connection could be made because the target machine actively refused it. (api.github.com:443)
##[warning]Back off 24.464 seconds before retry.
##[warning]Failed to download action 'https://api.github.com/repos/actions/checkout/zipball/2541b1294d2704b0964813337f33b291d3f8596b'. Error: No connection could be made because the target machine actively refused it. (api.github.com:443)
##[warning]Back off 22.279 seconds before retry.
##[error]No connection could be made because the target machine actively refused it. (api.github.com:443)

[rust-log-analyzer]

A job failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)