diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 9d1bfd5..e9947d5 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -54,36 +54,3 @@ jobs:
 
       - name: build example -- glibc size-optimized
         run: cd example && make clean && make TARGET=aarch64-unknown-linux-gnu PROFILE=size-optimized CARGO="rustup run nightly cargo" LTO=1
-
-  # this _should_ have been -stable, but there is a bug when running in the container ("Invalid cross-device link")
-  build-musl-beta:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Update repos
-        run: sudo apt-get update -qq
-      - name: Install toolchain
-        run: sudo apt-get install -qy liblzma-dev gcc make pkgconf musl-dev musl-tools rustup
-      - name: install rust target
-        run: rustup default beta && rustup target add aarch64-unknown-linux-musl && rustup component add rust-src && rustup update
-
-      - name: build example -- musl release
-        run: cd example && make clean && make TARGET=aarch64-unknown-linux-musl PROFILE=release MUSL=1 CARGO="rustup run beta cargo"
-      - name: build example -- musl debug
-        run: cd example && make clean && make TARGET=aarch64-unknown-linux-musl PROFILE=debug MUSL=1 CARGO="rustup run beta cargo"
-
-  build-size-musl-unstable:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Update repos
-        run: sudo apt-get update -qq
-      - name: Install toolchain
-        run: sudo apt-get install -qy liblzma-dev gcc make pkgconf musl-dev musl-tools rustup
-      - name: install rust targets
-        run: rustup toolchain install nightly -t aarch64-unknown-linux-musl -c rust-src --no-self-update
-
-      - name: build example -- musl size-optimized
-        run: cd example && make clean && make TARGET=aarch64-unknown-linux-musl PROFILE=size-optimized MUSL=1 LTO=1 CARGO="rustup run nightly cargo"