Rollup of 5 pull requests

[GuillaumeGomez]

Successful merges:

• Fix docs of compare_bytes #130658 (Fix docs of compare_bytes)
• delay uncapping the max_read_size in File::read_to_end #130670 (delay uncapping the max_read_size in File::read_to_end)
• interpret: remove outdated FIXME #130690 (interpret: remove outdated FIXME)
• make unstable Result::flatten a const fn #130692 (make unstable Result::flatten a const fn)
• Add some missing unstable book tracking issue links #130702 (Add some missing unstable book tracking issue links)

r? @ghost
@rustbot modify labels: rollup

Create a similar rollup

[GuillaumeGomez]

@bors r+ p=5 rollup=never

[bors]

📌 Commit a34e0f5 has been approved by GuillaumeGomez

It is now in the queue for this repository.

[bors]

⌛ Testing commit a34e0f5 with merge 6c6d210...

[bors]

☀️ Test successful - checks-actions
Approved by: GuillaumeGomez
Pushing 6c6d210 to master...

[rust-timer]

📌 Perf builds for each rolled up PR:

PR#	Message	Perf Build Sha
#130658	Fix docs of compare_bytes	4b8e5bdd0ca3477c26208e45f00b85cb3adbb3e5 (link)
#130670	delay uncapping the max_read_size in File::read_to_end	7907983cfeba251c32b343e529335a4dfe85ec46 (link)
#130690	interpret: remove outdated FIXME	f956c943937834235f858632dea7594200845025 (link)
#130692	make unstable Result::flatten a const fn	a945689ec7195ca933ec6b6b95e969674df3a129 (link)
#130702	Add some missing unstable book tracking issue links	ab6872831322f7081241d42b3781babb5f11df08 (link)

previous master: 8ed95d1d9e

In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA

[rust-timer]

Finished benchmarking commit (6c6d210): comparison URL.

Overall result: ❌✅ regressions and improvements - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	0.2%	[0.2%, 0.2%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.2%	[-0.2%, -0.2%]	1
All ❌✅ (primary)	0.2%	[0.2%, 0.2%]	1

Max RSS (memory usage)

Results (primary -1.3%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	2.7%	[2.3%, 3.3%]	3
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-7.4%	[-9.5%, -5.2%]	2
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-1.3%	[-9.5%, 3.3%]	5

Cycles

Results (primary -0.0%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	0.4%	[0.4%, 0.4%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-0.5%	[-0.5%, -0.5%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-0.0%	[-0.5%, 0.4%]	2

Binary size

Results (primary -0.2%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-0.2%	[-0.3%, -0.0%]	3
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-0.2%	[-0.3%, -0.0%]	3

Bootstrap: 769.552s -> 769.792s (0.03%)
Artifact size: 341.41 MiB -> 341.51 MiB (0.03%)