Rollup of 12 pull requests

[pietroalbini]

Successful merges:

• Documents reference equality by address (#54197) #54755 (Documents reference equality by address (Cover reference equality in primitive.reference API docs #54197))
• During rustc bootstrap, make default for optimize independent of debug #54811 (During rustc bootstrap, make default for optimize independent of debug)
• Fix #54707 - parse_trait_item_ now handles interpolated blocks as function body decls #54850 (Fix Creating a trait function with a macro using block designator: error: expected ; or {, found { ... } #54707 - parse_trait_item_ now handles interpolated blocks as function body decls)
• Add doc comments about safest way to initialize a vector of zeros #54860 (Add doc comments about safest way to initialize a vector of zeros)
• Fix mobile docs #54869 (Fix mobile docs)
• Stabilize tool lints #54870 (Stabilize tool lints)
• Fix tracking issue for Once::is_completed #54891 (Fix tracking issue for Once::is_completed)
• Stabilize the Option::replace method #54904 (Stabilize the Option::replace method)
• doc fix: it's auto traits that make for automatic implementations #54913 (doc fix: it's auto traits that make for automatic implementations)
• Unused result warning: "X which must" ↦ "X that must" #54917 (Unused result warning: "X which must" ↦ "X that must")
• impl Eq+Hash for TyLayout #54936 (impl Eq+Hash for TyLayout)
• Point to variable in asm! macro when failing borrowck #54945 (Point to variable in asm! macro when failing borrowck)

Failed merges:

r? @ghost

[pietroalbini]

@bors r+ p=12

[bors]

📌 Commit c6cef8a has been approved by pietroalbini

[bors]

⌛ Testing commit c6cef8a with merge 1ff24b9b2944c6ec3574e56ad8ead1d79b6899e8...

[bors]

💔 Test failed - status-appveyor

[pietroalbini]

3 hours timeout.

@bors retry

[bors]

🔒 Merge conflict

This pull request and the master branch diverged in a way that cannot be automatically merged. Please rebase on top of the latest master branch, and let the reviewer approve again.

How do I rebase?

Assuming self is your fork and upstream is this repository, you can resolve the conflict following these steps:

1. git checkout rollup (switch to your branch)
2. git fetch upstream master (retrieve the latest master)
3. git rebase upstream/master -p (rebase on top of it)
4. Follow the on-screen instruction to resolve conflicts (check git status if you got lost).
5. git push self rollup --force-with-lease (update this PR)

You may also read Git Rebasing to Resolve Conflicts by Drew Blessing for a short tutorial.

Please avoid the "Resolve conflicts" button on GitHub. It uses git merge instead of git rebase which makes the PR commit history more difficult to read.

Sometimes step 4 will complete without asking for resolution. This is usually due to difference between how Cargo.lock conflict is handled during merge and rebase. This is normal, and you should still perform step 5 to update this PR.

Error message

Removing src/test/ui/feature-gates/feature-gate-tool_lints.stderr
Removing src/test/ui/feature-gates/feature-gate-tool_lints.rs
Removing src/test/ui/feature-gates/feature-gate-tool_lints-fail.stderr
Removing src/test/ui/feature-gates/feature-gate-tool_lints-fail.rs
Auto-merging src/librustc_mir/interpret/operand.rs
CONFLICT (content): Merge conflict in src/librustc_mir/interpret/operand.rs
Removing src/doc/unstable-book/src/language-features/tool-lints.md
Automatic merge failed; fix conflicts and then commit the result.

[bors]

☔ The latest upstream changes (presumably #54461) made this pull request unmergeable. Please resolve the merge conflicts.