chore(deps): Update Rust Stable to v1.91 (#6169)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -167,7 +167,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.90"  # STABLE
+        toolchain: "1.91"  # STABLE
     - uses: Swatinem/rust-cache@v2
     - name: UI Tests
       run: make test-ui-${{ matrix.features }}
@@ -210,7 +210,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.90"  # STABLE
+        toolchain: "1.91"  # STABLE
     - uses: Swatinem/rust-cache@v2
     - name: Check documentation
       env:
@@ -225,7 +225,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.90"  # STABLE
+        toolchain: "1.91"  # STABLE
         components: rustfmt
     - uses: Swatinem/rust-cache@v2
     - name: Check formatting
@@ -239,7 +239,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.90"  # STABLE
+        toolchain: "1.91"  # STABLE
         components: clippy
     - uses: Swatinem/rust-cache@v2
     - name: Lint (ultra-minimal)

Makefile

@@ -10,7 +10,7 @@ ifneq (${TOOLCHAIN_TARGET},)
   ARGS+=--target ${TOOLCHAIN_TARGET}
 endif
 
-STABLE?=1.90
+STABLE?=1.91
 
 _FEATURES = minimal default wasm full debug release
 _FEATURES_minimal = --no-default-features --features "std"

tests/derive_ui.rs

@@ -8,7 +8,7 @@
 #![cfg(feature = "unstable-derive-ui-tests")]
 
 #[cfg(feature = "derive")]
-#[rustversion::attr(not(stable(1.90)), ignore)] // STABLE
+#[rustversion::attr(not(stable(1.91)), ignore)] // STABLE
 #[test]
 fn ui() {
     let t = trybuild::TestCases::new();

tests/derive_ui/enum_variant_not_args.stderr

@@ -2,8 +2,13 @@ error[E0277]: the trait bound `SubCmd: clap::Args` is not satisfied
  --> tests/derive_ui/enum_variant_not_args.rs:3:9
   |
 3 |     Sub(SubCmd),
-  |         ^^^^^^ the trait `clap::Args` is not implemented for `SubCmd`
+  |         ^^^^^^ unsatisfied trait bound
   |
+help: the trait `clap::Args` is not implemented for `SubCmd`
+ --> tests/derive_ui/enum_variant_not_args.rs:7:1
+  |
+7 | enum SubCmd {}
+  | ^^^^^^^^^^^
   = help: the following other types implement trait `clap::Args`:
             ()
             Box<T>

tests/derive_ui/flatten_enum_in_struct.stderr

@@ -2,8 +2,13 @@ error[E0277]: the trait bound `SubCmd: clap::Args` is not satisfied
  --> tests/derive_ui/flatten_enum_in_struct.rs:4:10
   |
 4 |     sub: SubCmd,
-  |          ^^^^^^ the trait `clap::Args` is not implemented for `SubCmd`
+  |          ^^^^^^ unsatisfied trait bound
   |
+help: the trait `clap::Args` is not implemented for `SubCmd`
+ --> tests/derive_ui/flatten_enum_in_struct.rs:8:1
+  |
+8 | enum SubCmd {}
+  | ^^^^^^^^^^^
   = help: the following other types implement trait `clap::Args`:
             ()
             Box<T>

tests/derive_ui/flatten_struct_in_enum.stderr

@@ -2,8 +2,13 @@ error[E0277]: the trait bound `SubCmd: Subcommand` is not satisfied
  --> tests/derive_ui/flatten_struct_in_enum.rs:4:9
   |
 4 |     Sub(SubCmd),
-  |         ^^^^^^ the trait `Subcommand` is not implemented for `SubCmd`
+  |         ^^^^^^ unsatisfied trait bound
   |
+help: the trait `Subcommand` is not implemented for `SubCmd`
+ --> tests/derive_ui/flatten_struct_in_enum.rs:8:1
+  |
+8 | struct SubCmd {}
+  | ^^^^^^^^^^^^^
   = help: the following other types implement trait `Subcommand`:
             ()
             Box<T>

tests/derive_ui/skip_without_default.stderr

@@ -2,4 +2,10 @@ error[E0277]: the trait bound `Kind: Default` is not satisfied
   --> tests/derive_ui/skip_without_default.rs:22:11
    |
 22 |     #[arg(skip)]
-   |           ^^^^ the trait `Default` is not implemented for `Kind`
+   |           ^^^^ unsatisfied trait bound
+   |
+help: the trait `Default` is not implemented for `Kind`
+  --> tests/derive_ui/skip_without_default.rs:12:1
+   |
+12 | enum Kind {
+   | ^^^^^^^^^

tests/derive_ui/value_parser_unsupported.stderr

@@ -37,6 +37,7 @@ note: the traits `From`, `FromStr`, `ValueEnum`,  and `ValueParserFactory` must
      |
  293 | pub trait ValueEnum: Sized + Clone {
      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+     |
     --> $RUST/core/src/convert/mod.rs
     --> $RUST/core/src/str/traits.rs
      = note: this error originates in the macro `clap::value_parser` (in Nightly builds, run with -Z macro-backtrace for more info)