Rollup of 30 pull requests

[GuillaumeGomez]

• Successful merges: extended information for slice pattern errors (E0527 through E0529) #34319, Merge guidelines from RFC 1567 into UX Guidelines. #34894, Add doc examples for range::RangeArgument::{start,end}. #35041, Add Derive not possible question to Copy #35042, Add doc examples for FileType struct #35076, Add io::Error doc examples #35109, Provide more explicit example of wildcard version in guessing game doc. #35137, A couple std::net doc improvements. #35175, Add doc example for Vec #35181, Add doc example for std::ffi::NulError::nul_position. #35182, Update the-stack-and-the-heap.md #35189, Doc std::thread::park_timeout #35239, E0132 update #35264, E0109 Update error format #35266, Clean up std::raw docs #35281, Updated E0071 to new format. #35285, E0060 e0061 format update #35289, Update E0079 to new format #35291, Update error message for E0172 #35294, Update error message E0178 #35296, Set label for unreachable pattern #35297, Update error message E0120 #35298, E0110 update error format #35299, Update E0124 to the new error format #35318, Update error format for E0137 #35319, Fix precedence table in reference #35324, E0119 update error format #35326, Update error format for E0062 #35328, Update error format for E0130 #35331
• Failed merges:

[rust-highfive]

r? @alexcrichton

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[GuillaumeGomez]

@bors: r+ p=1

[bors]

📌 Commit fa4f4e7 has been approved by GuillaumeGomez

[TimNN]

@GuillaumeGomez #35298 fails tidy

[GuillaumeGomez]

@TimNN: @jonathandturner said it to me so recreated the PR.

@bors: r+ p=1

[bors]

📌 Commit 2a14099 has been approved by GuillaumeGomez

[TimNN]

@GuillaumeGomez #35289 as well. Didn't notice the later fixup commit >.<

[sophiajt]

@TimNN - what about #35289? It passed Travis (I think?)

[bors]

⌛ Testing commit 2a14099 with merge 6e9bce7...

[bors]

💔 Test failed - auto-linux-64-nopt-t

[GuillaumeGomez]

@bors: retry

[GuillaumeGomez]

@bors: r+ p=1

[bors]

📌 Commit 0d83119 has been approved by GuillaumeGomez

[bors]

⌛ Testing commit 0d83119 with merge 7105252...

[bors]

💔 Test failed - auto-win-msvc-64-opt-rustbuild

[Aatch]

@bors retry

[bors]

⌛ Testing commit 0d83119 with merge a445714...

[bors]

💔 Test failed - auto-win-gnu-32-opt-rustbuild

[GuillaumeGomez]

@bors: r+ p=1

[bors]

📌 Commit 854532a has been approved by GuillaumeGomez

[bors]

⌛ Testing commit 854532a with merge 5101d6e...

[bors]

💔 Test failed - auto-win-gnu-32-opt-rustbuild