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Rust 2018: NLL migrate mode => hard error #63565
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@bors try |
[DO NOT MERGE] NLL crater run 3: deny NLL warnings in migrate mode Forward port of #60914. r? @ghost cc @rust-lang/lang cc @rust-lang/wg-compiler-nll
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☀️ Try build successful - checks-azure |
@craterbot run mode=check-only |
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I'll have a report ready soon |
briefly discussed with @Centril on discord, results are that I will go file PRs against nalgebra, url, and rusttype of the appropriate versions as a hopefully patch-version bump and try to get those released, and then we'll do another crater run that'll hopefully be much smaller in result size |
We discussed NLL migrate mode in today's language team meeting based on the data above (n.b. 122 of the crates were GitHub ones), the report provided by @Mark-Simulacrum in https://gist.github.com/Mark-Simulacrum/ff49698b6bffc5a40bf9c20ec255d619, etc. We reached the following conclusions:
I'll make the change for Rust 2018 in this PR. |
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Should be ready now. |
@bors r+ |
📌 Commit 0554095 has been approved by |
⌛ Testing commit 0554095 with merge f0b1cd1ef0edf793ad6a009b82befea4b74271c9... |
…tthewjasper Rust 2018: NLL migrate mode => hard error As per decision on a language team meeting as described in rust-lang#63565 (comment), we refuse to downgrade NLL errors, that AST borrowck accepts, into warnings and keep them as hard errors. cc @rust-lang/lang cc @rust-lang/wg-compiler-nll
@bors retry rolled up. |
Rollup of 8 pull requests Successful merges: - #63565 (Rust 2018: NLL migrate mode => hard error) - #63969 (Add missing examples for Option type) - #64067 (Remove no-prefer-dynamic from valgrind tests) - #64166 (Better way of conditioning the sanitizer builds) - #64189 (annotate-snippet emitter: Deal with multispans from macros, too) - #64202 (Fixed grammar/style in some error messages) - #64206 (annotate-snippet emitter: Update an issue number) - #64208 (it's more pythonic to use 'is not None' in python files) Failed merges: r? @ghost
…hewjasper Rust 2015: No longer downgrade NLL errors As per decision on a language team meeting as described in rust-lang#63565 (comment), in Rust 2015, we refuse to downgrade NLL errors, that AST borrowck accepts, into warnings and keep them as hard errors. The remaining work to throw out AST borrowck and adjust some tests still remains after this PR. Fixes rust-lang#38899 Fixes rust-lang#53432 Fixes rust-lang#45157 Fixes rust-lang#31567 Fixes rust-lang#27868 Fixes rust-lang#47366 r? @matthewjasper
…hewjasper Rust 2015: No longer downgrade NLL errors As per decision on a language team meeting as described in rust-lang#63565 (comment), in Rust 2015, we refuse to downgrade NLL errors, that AST borrowck accepts, into warnings and keep them as hard errors. The remaining work to throw out AST borrowck and adjust some tests still remains after this PR. Fixes rust-lang#38899 Fixes rust-lang#53432 Fixes rust-lang#45157 Fixes rust-lang#31567 Fixes rust-lang#27868 Fixes rust-lang#47366 r? @matthewjasper
…hewjasper Rust 2015: No longer downgrade NLL errors As per decision on a language team meeting as described in rust-lang#63565 (comment), in Rust 2015, we refuse to downgrade NLL errors, that AST borrowck accepts, into warnings and keep them as hard errors. The remaining work to throw out AST borrowck and adjust some tests still remains after this PR. Fixes rust-lang#38899 Fixes rust-lang#53432 Fixes rust-lang#45157 Fixes rust-lang#31567 Fixes rust-lang#27868 Fixes rust-lang#47366 r? @matthewjasper
…hewjasper Rust 2015: No longer downgrade NLL errors As per decision on a language team meeting as described in rust-lang#63565 (comment), in Rust 2015, we refuse to downgrade NLL errors, that AST borrowck accepts, into warnings and keep them as hard errors. The remaining work to throw out AST borrowck and adjust some tests still remains after this PR. Fixes rust-lang#38899 Fixes rust-lang#53432 Fixes rust-lang#45157 Fixes rust-lang#31567 Fixes rust-lang#27868 Fixes rust-lang#47366 r? @matthewjasper
Pkgsrc changes: * Remove patch which no longer applies (but what about RPATH?) * Adapt a few patches to changed files upstream. Upstream changes: Version 1.39.0 (2019-11-07) =========================== Language -------- - [You can now create `async` functions and blocks with `async fn`, `async move {}`, and `async {}` respectively, and you can now call `.await` on async expressions.][63209] - [You can now use certain attributes on function, closure, and function pointer parameters.][64010] These attributes include `cfg`, `cfg_attr`, `allow`, `warn`, `deny`, `forbid` as well as inert helper attributes used by procedural macro attributes applied to items. e.g. ```rust fn len( #[cfg(windows)] slice: &[u16], #[cfg(not(windows))] slice: &[u8], ) -> usize { slice.len() } ``` - [You can now take shared references to bind-by-move patterns in the `if` guards of `match` arms.][63118] e.g. ```rust fn main() { let array: Box<[u8; 4]> = Box::new([1, 2, 3, 4]); match array { nums // ---- `nums` is bound by move. if nums.iter().sum::<u8>() == 10 // ^------ `.iter()` implicitly takes a reference to `nums`. => { drop(nums); // ----------- Legal as `nums` was bound by move and so we have ownership. } _ => unreachable!(), } } ``` Compiler -------- - [Added tier 3\* support for the `i686-unknown-uefi` target.][64334] - [Added tier 3 support for the `sparc64-unknown-openbsd` target.][63595] - [rustc will now trim code snippets in diagnostics to fit in your terminal.] [63402] **Note** Cargo currently doesn't use this feature. Refer to [cargo#7315][cargo/7315] to track this feature's progress. - [You can now pass `--show-output` argument to test binaries to print the output of successful tests.][62600] \* Refer to Rust's [platform support page][forge-platform-support] for more information on Rust's tiered platform support. Libraries --------- - [`Vec::new` and `String::new` are now `const` functions.][64028] - [`LinkedList::new` is now a `const` function.][63684] - [`str::len`, `[T]::len` and `str::as_bytes` are now `const` functions.][63770] - [The `abs`, `wrapping_abs`, and `overflowing_abs` numeric functions are now `const`.][63786] Stabilized APIs --------------- - [`Pin::into_inner`] - [`Instant::checked_duration_since`] - [`Instant::saturating_duration_since`] Cargo ----- - [You can now publish git dependencies if supplied with a `version`.] [cargo/7237] - [The `--all` flag has been renamed to `--workspace`.][cargo/7241] Using `--all` is now deprecated. Misc ---- - [You can now pass `-Clinker` to rustdoc to control the linker used for compiling doctests.][63834] Compatibility Notes ------------------- - [Code that was previously accepted by the old borrow checker, but rejected by the NLL borrow checker is now a hard error in Rust 2018.][63565] This was previously a warning, and will also become a hard error in the Rust 2015 edition in the 1.40.0 release. - [`rustdoc` now requires `rustc` to be installed and in the same directory to run tests.][63827] This should improve performance when running a large amount of doctests. - [The `try!` macro will now issue a deprecation warning.][62672] It is recommended to use the `?` operator instead. - [`asinh(-0.0)` now correctly returns `-0.0`.][63698] Previously this returned `0.0`. [62600]: rust-lang/rust#62600 [62672]: rust-lang/rust#62672 [63118]: rust-lang/rust#63118 [63209]: rust-lang/rust#63209 [63402]: rust-lang/rust#63402 [63565]: rust-lang/rust#63565 [63595]: rust-lang/rust#63595 [63684]: rust-lang/rust#63684 [63698]: rust-lang/rust#63698 [63770]: rust-lang/rust#63770 [63786]: rust-lang/rust#63786 [63827]: rust-lang/rust#63827 [63834]: rust-lang/rust#63834 [63927]: rust-lang/rust#63927 [63933]: rust-lang/rust#63933 [63934]: rust-lang/rust#63934 [63938]: rust-lang/rust#63938 [63940]: rust-lang/rust#63940 [63941]: rust-lang/rust#63941 [63945]: rust-lang/rust#63945 [64010]: rust-lang/rust#64010 [64028]: rust-lang/rust#64028 [64334]: rust-lang/rust#64334 [cargo/7237]: rust-lang/cargo#7237 [cargo/7241]: rust-lang/cargo#7241 [cargo/7315]: rust-lang/cargo#7315 [`Pin::into_inner`]: https://doc.rust-lang.org/std/pin/struct.Pin.html#method.into_inner [`Instant::checked_duration_since`]: https://doc.rust-lang.org/std/time/struct.Instant.html#method.checked_duration_since [`Instant::saturating_duration_since`]: https://doc.rust-lang.org/std/time/struct.Instant.html#method.saturating_duration_since
As per decision on a language team meeting as described in #63565 (comment), we refuse to downgrade NLL errors, that AST borrowck accepts, into warnings and keep them as hard errors.
cc @rust-lang/lang
cc @rust-lang/wg-compiler-nll