chore: require nightly-2026-08-26

Bump the documented, CI-pinned and `cargo-psp`-enforced minimum nightly
to the version the `PanicPayload` and `libunwind` fixes were verified
against, `rustc 1.100.0-nightly (787af2b8c 2026-08-25)`. The commit date
lags the toolchain date by one day, as noted above the constant.

Author: ItsNoHax

.github/workflows/pipeline.yml

@@ -16,7 +16,7 @@ jobs:
 
     runs-on: ${{ matrix.platform }}
     env: 
-      RUSTUP_TOOLCHAIN: nightly-2026-05-30
+      RUSTUP_TOOLCHAIN: nightly-2026-08-26
     steps:
       - name: Checkout sources
         uses: actions/checkout@v7

README.md

@@ -56,7 +56,7 @@ implementations of graphics functions, and the addition of missing libraries.
 ## Dependencies
 
 To compile for the PSP, you will need a Rust **nightly** version equal to or
-later than `2026-05-30` and the `rust-src` component. Please install Rust using
+later than `2026-08-26` and the `rust-src` component. Please install Rust using
 https://rustup.rs/
 
 Use the following if you are new to Rust. (Feel free to set an override manually

cargo-psp/src/main.rs

@@ -136,17 +136,17 @@ impl core::ops::Add<CommitDate> for CommitDate {
     }
 }
 
-// Minimum 2023-03-27, remember to update both commit date and version too,
+// Minimum 2026-08-26, remember to update both commit date and version too,
 // below. Note that the `day` field lags by one day, as the toolchain always
 // contains the previous days' nightly rustc.
 const MINIMUM_COMMIT_DATE: CommitDate = CommitDate {
     year: 2026,
-    month: 05,
-    day: 29,
+    month: 08,
+    day: 25,
 };
 const MINIMUM_RUSTC_VERSION: Version = Version {
     major: 1,
-    minor: 96,
+    minor: 100,
     patch: 0,
     pre: Prerelease::EMPTY,
     build: BuildMetadata::EMPTY,