Temporarily disable miri on doctests

Author: dtolnay

.github/workflows/ci.yml

@@ -101,13 +101,13 @@ jobs:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@miri
       - name: Run cargo miri test (64-bit little endian)
-        run: cargo miri test --target x86_64-unknown-linux-gnu
+        run: cargo miri test --target x86_64-unknown-linux-gnu --all-targets  # exclude doctests https://github.com/rust-lang/miri/issues/3404
       - name: Run cargo miri test (64-bit big endian)
-        run: cargo miri test --target powerpc64-unknown-linux-gnu
+        run: cargo miri test --target powerpc64-unknown-linux-gnu --all-targets  # exclude doctests https://github.com/rust-lang/miri/issues/3404
       - name: Run cargo miri test (32-bit little endian)
-        run: cargo miri test --target i686-unknown-linux-gnu
+        run: cargo miri test --target i686-unknown-linux-gnu --all-targets  # exclude doctests https://github.com/rust-lang/miri/issues/3404
       - name: Run cargo miri test (32-bit big endian)
-        run: cargo miri test --target mips-unknown-linux-gnu
+        run: cargo miri test --target mips-unknown-linux-gnu --all-targets  # exclude doctests https://github.com/rust-lang/miri/issues/3404
 
   fuzz:
     name: Fuzz