Rollup of 8 pull requests

[Centril]

Successful merges:

• Revert "Set test flag when rustdoc is running with --test option"  #61199 (Revert "Set test flag when rustdoc is running with --test option" )
• Add --pass $mode to compiletest through ./x.py #61755 (Add --pass $mode to compiletest through ./x.py)
• publish_toolstate: don't use 'new' from inside the loop #62023 (publish_toolstate: don't use 'new' from inside the loop)
• Inform the query system about properties of queries at compile time #62104 (Inform the query system about properties of queries at compile time)
• Update miri #62105 (Update miri)
• Implement mem::{zeroed,uninitialized} in terms of MaybeUninit. #62150 (Implement mem::{zeroed,uninitialized} in terms of MaybeUninit.)
• Avoid mem::uninitialized() in std::sys::unix #62163 (Avoid mem::uninitialized() in std::sys::unix)
• doc(libcore) Fix CS #62204 (doc(libcore) Fix CS)

Failed merges:

r? @ghost

[Centril]

@bors r+ p=8 rollup=never

[bors]

📌 Commit 3494fa9 has been approved by Centril

[bors]

⌛ Testing commit 3494fa9 with merge 081c72b59121740e611624c652fc307223327c60...

[Centril]

@bors retry Yielding prio to #62209

[bors]

⌛ Testing commit 3494fa9 with merge ebc923f4b2f49dd65548df3533abdf064b35251a...

[Centril]

@bors retry Yielding prio to #62209

[bors]

⌛ Testing commit 3494fa9 with merge 1d03809eb822469f7394d2d8ea2fd53f37beb959...

[bors]

💔 Test failed - checks-travis

[rust-highfive]

The job x86_64-gnu-tools of your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

[01:30:39] expected stderr:
[01:30:39] error: reference to zeroed memory
[01:30:39]   --> $DIR/invalid_ref.rs:24:24
[01:30:39]    |
[01:30:39] LL |     let ref_zero: &T = std::mem::zeroed(); // warning
[01:30:39]    |
[01:30:39]    = note: #[deny(clippy::invalid_ref)] on by default
[01:30:39]    = note: #[deny(clippy::invalid_ref)] on by default
[01:30:39]    = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] error: reference to zeroed memory
[01:30:39]   --> $DIR/invalid_ref.rs:28:24
[01:30:39]    |
[01:30:39]    |
[01:30:39] LL |     let ref_zero: &T = core::mem::zeroed(); // warning
[01:30:39]    |
[01:30:39]    |
[01:30:39]    = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] error: reference to zeroed memory
[01:30:39]   --> $DIR/invalid_ref.rs:32:24
[01:30:39]    |
[01:30:39]    |
[01:30:39] LL |     let ref_zero: &T = std::intrinsics::init(); // warning
[01:30:39]    |
[01:30:39]    |
[01:30:39]    = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] error: reference to uninitialized memory
[01:30:39]   --> $DIR/invalid_ref.rs:36:26
[01:30:39]    |
[01:30:39] LL |     let ref_uninit: &T = std::mem::uninitialized(); // warning
[01:30:39] LL |     let ref_uninit: &T = std::mem::uninitialized(); // warning
[01:30:39]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
[01:30:39]    |
[01:30:39]    = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] error: reference to uninitialized memory
[01:30:39]   --> $DIR/invalid_ref.rs:40:26
[01:30:39]    |
[01:30:39] LL |     let ref_uninit: &T = core::mem::uninitialized(); // warning
[01:30:39] LL |     let ref_uninit: &T = core::mem::uninitialized(); // warning
[01:30:39]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
[01:30:39]    |
[01:30:39]    = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] error: reference to uninitialized memory
[01:30:39]   --> $DIR/invalid_ref.rs:44:26
[01:30:39]    |
[01:30:39] LL |     let ref_uninit: &T = std::intrinsics::uninit(); // warning
[01:30:39] LL |     let ref_uninit: &T = std::intrinsics::uninit(); // warning
[01:30:39]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
[01:30:39]    |
[01:30:39]    = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] error: aborting due to 6 previous errors
[01:30:39] 
[01:30:39] 
[01:30:39] 
[01:30:39] 
[01:30:39] diff of stderr:
[01:30:39] 
[01:30:39] -error: reference to zeroed memory
[01:30:39] -  --> $DIR/invalid_ref.rs:24:24
[01:30:39] +error[E0432]: unresolved import `std::intrinsics::uninit`
[01:30:39] +  --> $DIR/invalid_ref.rs:5:29
[01:30:39]     |
[01:30:39] -LL |     let ref_zero: &T = std::mem::zeroed(); // warning
[01:30:39] -   |
[01:30:39] -   = note: #[deny(clippy::invalid_ref)] on by default
[01:30:39] -   = note: #[deny(clippy::invalid_ref)] on by default
[01:30:39] -   = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] +LL | use std::intrinsics::{init, uninit};
[01:30:39] +   |                             |
[01:30:39] +   |                             no `uninit` in `intrinsics`
[01:30:39] +   |                             help: a similar name exists in the module: `init`
[01:30:39]  
[01:30:39]  
[01:30:39] -error: reference to zeroed memory
[01:30:39] -  --> $DIR/invalid_ref.rs:28:24
[01:30:39] +error[E0425]: cannot find function `uninit` in module `std::intrinsics`
[01:30:39] +  --> $DIR/invalid_ref.rs:44:43
[01:30:39]     |
[01:30:39] -LL |     let ref_zero: &T = core::mem::zeroed(); // warning
[01:30:39] -   |
[01:30:39] -   |
[01:30:39] -   = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] -error: reference to zeroed memory
[01:30:39] -  --> $DIR/invalid_ref.rs:32:24
[01:30:39] -   |
[01:30:39] -   |
[01:30:39] -LL |     let ref_zero: &T = std::intrinsics::init(); // warning
[01:30:39] -   |
[01:30:39] -   |
[01:30:39] -   = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] -error: reference to uninitialized memory
[01:30:39] -  --> $DIR/invalid_ref.rs:36:26
[01:30:39] -   |
[01:30:39] -LL |     let ref_uninit: &T = std::mem::uninitialized(); // warning
[01:30:39] -LL |     let ref_uninit: &T = std::mem::uninitialized(); // warning
[01:30:39] -   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
[01:30:39] -   |
[01:30:39] -   = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] -error: reference to uninitialized memory
[01:30:39] -  --> $DIR/invalid_ref.rs:40:26
[01:30:39] -   |
[01:30:39] -LL |     let ref_uninit: &T = core::mem::uninitialized(); // warning
[01:30:39] -LL |     let ref_uninit: &T = core::mem::uninitialized(); // warning
[01:30:39] -   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
[01:30:39] -   |
[01:30:39] -   = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39] -error: reference to uninitialized memory
[01:30:39] -  --> $DIR/invalid_ref.rs:44:26
[01:30:39] -   |
[01:30:39]  LL |     let ref_uninit: &T = std::intrinsics::uninit(); // warning
[01:30:39]  LL |     let ref_uninit: &T = std::intrinsics::uninit(); // warning
[01:30:39] -   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
[01:30:39] -   |
[01:30:39] -   = help: Creation of a null reference is undefined behavior; see https://doc.rust-lang.org/reference/behavior-considered-undefined.html
[01:30:39]  
[01:30:39] -error: aborting due to 6 previous errors
[01:30:39] +error: aborting due to 2 previous errors
[01:30:39]  
---
[01:30:39] 
[01:30:39] ------------------------------------------
[01:30:39] stderr:
[01:30:39] ------------------------------------------
[01:30:39] {"message":"unresolved import `std::intrinsics::uninit`","code":{"code":"E0432","explanation":"\nAn import was unresolved.\n\nErroneous code example:\n\n```compile_fail,E0432\nuse something::Foo; // error: unresolved import `something::Foo`.\n```\n\nPaths in `use` statements are relative to the crate root. To import items\nrelative to the current and parent modules, use the `self::` and `super::`\nprefixes, respectively. Also verify that you didn't misspell the import\nname and that the import exists in the module from where you tried to\nimport it. Example:\n\n```\nuse self::something::Foo; // ok!\n\nmod something {\n    pub struct Foo;\n}\n# fn main() {}\n```\n\nOr, if you tried to use a module from an external crate, you may have missed\nthe `extern crate` declaration (which is usually placed in the crate root):\n\n```\nextern crate core; // Required to use the `core` crate\n\nuse core::any;\n# fn main() {}\n```\n"},"level":"error","spans":[{"file_name":"tests/ui/invalid_ref.rs","byte_start":95,"byte_end":101,"line_start":5,"line_end":5,"column_start":29,"column_end":35,"is_primary":true,"text":[{"text":"use std::intrinsics::{init, uninit};","highlight_start":29,"highlight_end":35}],"label":"no `uninit` in `intrinsics`","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"a similar name exists in the module","code":null,"level":"help","spans":[{"file_name":"tests/ui/invalid_ref.rs","byte_start":95,"byte_end":101,"line_start":5,"line_end":5,"column_start":29,"column_end":35,"is_primary":true,"text":[{"text":"use std::intrinsics::{init, uninit};","highlight_start":29,"highlight_end":35}],"label":null,"suggested_replacement":"init","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"error[E0432]: unresolved import `std::intrinsics::uninit`\n  --> tests/ui/invalid_ref.rs:5:29\n   |\nLL | use std::intrinsics::{init, uninit};\n   |                             ^^^^^^\n   |                             |\n   |                             no `uninit` in `intrinsics`\n   |                             help: a similar name exists in the module: `init`\n\n"}
[01:30:39] {"message":"cannot find function `uninit` in module `std::intrinsics`","code":{"code":"E0425","explanation":"\nAn unresolved name was used.\n\nErroneous code examples:\n\n```compile_fail,E0425\nsomething_that_doesnt_exist::foo;\n// error: unresolved name `something_that_doesnt_exist::foo`\n\n// or:\n\ntrait Foo {\n    fn bar() {\n        Self; // error: unresolved name `Self`\n    }\n}\n\n// or:\n\nlet x = unknown_variable;  // error: unresolved name `unknown_variable`\n```\n\nPlease verify that the name wasn't misspelled and ensure that the\nidentifier being referred to is valid for the given situation. Example:\n\n```\nenum something_that_does_exist {\n    Foo,\n}\n```\n\nOr:\n\n```\nmod something_that_does_exist {\n    pub static foo : i32 = 0i32;\n}\n\nsomething_that_does_exist::foo; // ok!\n```\n\nOr:\n\n```\nlet unknown_variable = 12u32;\nlet x = unknown_variable; // ok!\n```\n\nIf the item is not defined in the current module, it must be imported using a\n`use` statement, like so:\n\n```\n# mod foo { pub fn bar() {} }\n# fn main() {\nuse foo::bar;\nbar();\n# }\n```\n\nIf the item you are importing is not defined in some super-module of the\ncurrent module, then it must also be declared as public (e.g., `pub fn`).\n"},"level":"error","spans":[{"file_name":"tests/ui/invalid_ref.rs","byte_start":1095,"byte_end":1101,"line_start":44,"line_end":44,"column_start":43,"column_end":49,"is_primary":true,"text":[{"text":"    let ref_uninit: &T = std::intrinsics::uninit(); // warning","highlight_start":43,"highlight_end":49}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"a function with a similar name exists","code":null,"level":"help","spans":[{"file_name":"tests/ui/invalid_ref.rs","byte_start":1095,"byte_end":1101,"line_start":44,"line_end":44,"column_start":43,"column_end":49,"is_primary":true,"text":[{"text":"    let ref_uninit: &T = std::intrinsics::uninit(); // warning","highlight_start":43,"highlight_end":49}],"label":null,"suggested_replacement":"init","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"error[E0425]: cannot find function `uninit` in module `std::intrinsics`\n  --> tests/ui/invalid_ref.rs:44:43\n   |\nLL |     let ref_uninit: &T = std::intrinsics::uninit(); // warning\n   |                                           ^^^^^^ help: a function with a similar name exists: `init`\n\n"}
[01:30:39] {"message":"aborting due to 2 previous errors","code":null,"level":"error","spans":[],"children":[],"rendered":"error: aborting due to 2 previous errors\n\n"}
[01:30:39] {"message":"Some errors have detailed explanations: E0425, E0432.","code":null,"level":"","spans":[],"children":[],"rendered":"Some errors have detailed explanations: E0425, E0432.\n"}
[01:30:39] 
[01:30:39] ------------------------------------------
[01:30:39] 
[01:30:39] thread '[ui] ui/invalid_ref.rs' panicked at 'explicit panic', /cargo/registry/src/github.com-1ecc6299db9ec823/compiletest_rs-0.3.22/src/runtest.rs:2632:9
---
travis_time:end:007a188c:start=1561777576018316920,finish=1561777576026641796,duration=8324876
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:375222b4
$ ln -s . checkout && for CORE in obj/cores/core.*; do EXE=$(echo $CORE | sed 's|obj/cores/core\.[0-9]*\.!checkout!\(.*\)|\1|;y|!|/|'); if [ -f "$EXE" ]; then printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" "$CORE"; gdb --batch -q -c "$CORE" "$EXE" -iex 'set auto-load off' -iex 'dir src/' -iex 'set sysroot .' -ex bt -ex q; echo travis_fold":"end:crashlog; fi; done || true
travis_fold:end:after_failure.4
travis_fold:start:after_failure.5
travis_time:start:024a547d
travis_time:start:024a547d
$ cat ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers || true
cat: ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers: No such file or directory
travis_fold:end:after_failure.5
travis_fold:start:after_failure.6
travis_time:start:228ff6c0
$ dmesg | grep -i kill

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