The following packages contain code that will be rejected by a future version of Rust

[ggssh]

When I tried to build my project, I met the following warnings:

---

The following warnings were discovered during the build. These warnings are an
indication that the packages contain code that will become an error in a
future release of Rust. These warnings typically cover changes to close
soundness problems, unintended or undocumented behavior, or critical problems
that cannot be fixed in a backwards-compatible fashion, and are not expected
to be in wide use.

Each warning should contain a link for more information on what the warning
means and how to resolve it.

To solve this problem, you can try the following approaches:

• If the issue is not solved by updating the dependencies, a fix has to be
  implemented by those dependencies. You can help with that by notifying the
  maintainers of this problem (e.g. by creating a bug report) or by proposing a
  fix to the maintainers (e.g. by creating a pull request):

  • lalrpop@0.19.8
  • Repository: https://github.com/lalrpop/lalrpop
  • Detailed warning command: cargo report future-incompatibilities --id 5 --package lalrpop@0.19.8

• If waiting for an upstream fix is not an option, you can use the [patch]
  section in Cargo.toml to use your own version of the dependency. For more
  information, see:
  https://doc.rust-lang.org/cargo/reference/overriding-dependencies.html#the-patch-section

The package lalrpop v0.19.8 currently triggers the following future incompatibility lints:

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/prevalidate/mod.rs:158:42
|
158 | ... _ => return_err!(
| ____________________________-
159 | | ... annotation.id_span,
160 | | ... r#"cfg annotations must have a feature = "my_feature" argument"# 161 | | ... ), | |_______________________- in this macro invocation | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813> = note: #[allow(semicolon_in_expressions_from_macros)]on by default = note: this warning originates in the macroreturn_err` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/prevalidate/mod.rs:241:40
|
241 | ...=> return_err!(ann_prec.id_span, "invalid argument {} for precedence annotation, expected {}", name, precedence::LVL_AR...
| -------------------------------------------------------------------------------------------------------------------------- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/prevalidate/mod.rs:242:29
|
242 | ...=> return_err!(ann_prec.id_span, "missing argument for precedence annotation, expected {}", precedence::LVL_AR...
| --------------------------------------------------------------------------------------------------------------- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/prevalidate/mod.rs:253:40
|
253 | ...=> return_err!(ann_assoc.id_span, "invalid argument {} for associativity annotation, expected {}", name, precedence::SIDE_AR...
| ------------------------------------------------------------------------------------------------------------------------------- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/prevalidate/mod.rs:254:29
|
254 | ...=> return_err!(ann_assoc.id_span, "missing argument for associativity annotation, expected {}", precedence::SIDE_AR...
| -------------------------------------------------------------------------------------------------------------------- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/resolve/mod.rs:228:76
|
228 | Def::Nonterminal(0) | Def::Terminal | Def::MacroArg => return_err!(
| _______________________________________________________-
229 | | symbol.span,
230 | | "{} is a {}, not a macro",
231 | | msym.name,
232 | | def.description()
233 | | ),
| |- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/resolve/mod.rs:273:36
|
273 | Def::Nonterminal(_) => return_err!(symbol.span, "{} is a macro", id),
| ----------------------------------------------- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/resolve/mod.rs:281:21
|
281 | None => return_err!(span, "no definition found for {}", id),
| ----------------------------------------------------- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/macro_expand/mod.rs:167:21
|
167 | None => return_err!(span, "no macro definition found for {}", msym.name),
| ------------------------------------------------------------------ in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/macro_expand/mod.rs:320:25
|
320 | Err(err) => return_err!(span, "invalid regular expression {}: {}", regex, err),
| -------------------------------------------------------------------- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/macro_expand/mod.rs:398:21
|
398 | / ... return_err!(
399 | | ... span,
400 | | ... "named symbols like {}:{} are only allowed at the top-level of a nonterminal",
401 | | ... ex_id, ex_sym)
| |____________________- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: macro invocations at the end of a block are treated as expressions
= note: to ignore the value produced by the macro, add a semicolon after the invocation of return_err
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/token_check/mod.rs:366:13
|
366 | / return_err!(
367 | | spans[literal],
368 | | "{} are not supported in regular expressions",
369 | | feature
370 | | )
| |_____________- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: macro invocations at the end of a block are treated as expressions
= note: to ignore the value produced by the macro, add a semicolon after the invocation of return_err
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

warning: trailing semicolon in macro used in expression position
--> /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/mod.rs:22:11
|
22 | });
| ^
|
::: /home/ggssh20/.cargo/registry/src/mirrors.sjtug.sjtu.edu.cn-7a04d2510079875b/lalrpop-0.19.8/src/normalize/token_check/mod.rs:376:13
|
376 | / return_err!(
377 | | spans[literal0],
378 | | "ambiguity detected between the terminal {} and the terminal {}",
379 | | literal0,
380 | | literal1
381 | | )
| |_____________- in this macro invocation
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #79813 rust-lang/rust#79813
= note: macro invocations at the end of a block are treated as expressions
= note: to ignore the value produced by the macro, add a semicolon after the invocation of return_err
= note: #[allow(semicolon_in_expressions_from_macros)] on by default
= note: this warning originates in the macro return_err (in Nightly builds, run with -Z macro-backtrace for more info)

[ggssh]

I'm trying my best to correct the source code, but please forgive my limited ability.😭

[andersk]

This is a duplicate of #701, and fixes have been submitted in #660, #676, and #703, but I’m not sure if there are maintainers around anymore to merge them.

[yannham]

Hi, thanks for reporting! The project has gotten a bit more maintenance time again, and we're looking into this specific issue right now. Will fix it in a coming 0.19.9 release very soon.

[yannham]

Update: this should be fixed on master now, and will be part of the coming 0.19.9 release. Will close this issue then.