Use older `cbindgen` on android to work around MSRV

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e7740794cce4081db740728b1f4979e115385697..b6957f4ce47d252f8f93b96f66a7366dcf6051dc 100644 (file)
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -661,7 +661,11 @@ jobs:
       - name: Install cbindgen
         run: |
           . $HOME/.cargo/env
-          cargo install cbindgen
+          git clone https://github.com/eqrion/cbindgen
+          cd cbindgen/
+          git checkout v0.20.0
+          cargo update -p indexmap --precise "1.6.2" --verbose
+          cargo install --locked --path .
       - name: Checkout Rust-Lightning and LDK-C-Bindings git
         run: |
           git config --global user.email "ldk-ci@example.com"