Update to rebased rustc-rayon 0.4

[cuviper]

In rayon-rs/rayon#938, miri uncovered a race in rustc-rayon-core that had already been fixed in the regular rayon-core. I have now rebased that fork onto the latest rayon branch, and published as 0.4. I also updated indexmap to bump the dependency.

Cargo.lock changes:

Updating indexmap v1.8.0 -> v1.8.2
Updating rayon v1.5.1 -> v1.5.3
Updating rayon-core v1.9.1 -> v1.9.3
Updating rustc-rayon v0.3.2 -> v0.4.0
Updating rustc-rayon-core v0.3.2 -> v0.4.1

[rust-highfive]

r? @Mark-Simulacrum

(rust-highfive has picked a reviewer for you, use r? to override)

[Mark-Simulacrum]

@bors r+ rollup=never

[bors]

📌 Commit ab57e36 has been approved by Mark-Simulacrum

[bors]

⌛ Testing commit ab57e36 with merge 14f477e...

[bors]

☀️ Test successful - checks-actions
Approved by: Mark-Simulacrum
Pushing 14f477e to master...

[rust-timer]

Finished benchmarking commit (14f477e): comparison url.

Instruction count

• Primary benchmarks: 😿 relevant regression found
• Secondary benchmarks: no relevant changes found

	mean1	max	count2
Regressions 😿 (primary)	0.7%	0.7%	1
Regressions 😿 (secondary)	N/A	N/A	0
Improvements 🎉 (primary)	N/A	N/A	0
Improvements 🎉 (secondary)	N/A	N/A	0
All 😿🎉 (primary)	0.7%	0.7%	1

Max RSS (memory usage)

Results

• Primary benchmarks: 🎉 relevant improvements found
• Secondary benchmarks: 🎉 relevant improvement found

	mean1	max	count2
Regressions 😿 (primary)	N/A	N/A	0
Regressions 😿 (secondary)	N/A	N/A	0
Improvements 🎉 (primary)	-4.1%	-5.8%	2
Improvements 🎉 (secondary)	-3.3%	-3.3%	1
All 😿🎉 (primary)	-4.1%	-5.8%	2

Cycles

Results

• Primary benchmarks: 😿 relevant regression found
• Secondary benchmarks: no relevant changes found

	mean1	max	count2
Regressions 😿 (primary)	2.6%	2.6%	1
Regressions 😿 (secondary)	N/A	N/A	0
Improvements 🎉 (primary)	N/A	N/A	0
Improvements 🎉 (secondary)	N/A	N/A	0
All 😿🎉 (primary)	2.6%	2.6%	1

If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf.

@rustbot label: -perf-regression

Footnotes

1. the arithmetic mean of the percent change ↩ ↩² ↩³

2. number of relevant changes ↩ ↩² ↩³