Build docs of main branch with docsrs feature

.github/workflows/ci.yml

@@ -183,6 +183,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
          toolchain: nightly
+         profile: minimal
          override: true
       - name: "Build docs with docsrs flag"
         run: cargo doc --no-deps --no-default-features --features "macros num-bigint num-complex hashbrown serde multiple-pymethods"

.github/workflows/guide.yml

@@ -18,6 +18,11 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - uses: actions-rs/toolchain@v1
+        with:
+         toolchain: nightly
+         profile: minimal
+
       - name: Setup mdBook
         uses: peaceiris/actions-mdbook@v1
         with:
@@ -38,7 +43,7 @@ jobs:
         # This adds the docs to gh-pages-build/doc
       - name: Build the doc
         run: |
-          cargo doc --features="default num-bigint num-complex" --no-deps
+          cargo +nightly rustdoc --lib --features="macros num-bigint num-complex hashbrown serde multiple-pymethods" -- --cfg docsrs
           cp -r target/doc gh-pages-build/doc
           echo "<meta http-equiv=refresh content=0;url=pyo3/index.html>" > gh-pages-build/doc/index.html