CI: re-enable rust nightly

scoped-tls-hkt had a new release on crates.io

Author: ogoffart

.github/workflows/build_docs.yaml

@@ -22,9 +22,8 @@ jobs:
         env:
             # Allow deprecated warning because we are using nightly and some things might be deprecated in nightly
             # for which the stable alternative is not yet available.
-            # -A non_local_definitions because of https://github.com/Diggsey/scoped-tls-hkt/issues/5
-            RUSTFLAGS: -D warnings -W deprecated -A non_local_definitions
-            RUSTDOCFLAGS: --html-in-header=/home/runner/work/slint/slint/docs/resources/slint-docs-highlight.html -D warnings -W deprecated -A non_local_definitions
+            RUSTFLAGS: -D warnings -W deprecated
+            RUSTDOCFLAGS: --html-in-header=/home/runner/work/slint/slint/docs/resources/slint-docs-highlight.html -D warnings -W deprecated
             SLINT_NO_QT: 1
             CARGO_INCREMENTAL: false
         steps:

.github/workflows/ci.yaml

@@ -39,9 +39,8 @@ jobs:
                     - os: windows-2022
                       rust_version: "beta"
                       extra_args: "--exclude ffmpeg --exclude gstreamer-player"
-                    # nightly disabled because of https://github.com/Diggsey/scoped-tls-hkt/issues/5
-                    # - os: ubuntu-22.04
-                    #   rust_version: "nightly"
+                    - os: ubuntu-22.04
+                      rust_version: "nightly"
                 exclude:
                     - os: macos-12
                       rust_version: "1.73"