Temporarily disable -Zrandomize-layout due to rustc ICE

rust-lang/rust#113941

Author: dtolnay

.github/workflows/ci.yml

@@ -33,7 +33,7 @@ jobs:
           toolchain: ${{matrix.rust}}
       - name: Enable type layout randomization
         run: echo RUSTFLAGS=${RUSTFLAGS}\ -Zrandomize-layout >> $GITHUB_ENV
-        if: matrix.rust == 'nightly'
+        if: matrix.rust == 'nightly' && false # FIXME https://github.com/rust-lang/rust/issues/113941
       - run: cargo build
       - run: cargo test
       - run: cargo build --tests --features no-panic --release