From 5bc149b5aefaf052a8668881f4172a437fcbfa50 Mon Sep 17 00:00:00 2001
From: Chris Fallin <chris@cfallin.org>
Date: Fri, 9 Dec 2022 11:49:59 -0800
Subject: [PATCH] CI: pin to Ubuntu 20.04. (#5407)

CI is currently broken because `ubuntu-latest` moved to 22.04, which is
missing at least one package (`libclang1-9` used in our CI jobs) and may
be causing other issues as well.

This PR pins us back to 20.04; separately we should look into upgrading
when issues are resolved.
---
 .github/workflows/main.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e916694123..c314dfc38e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -66,7 +66,7 @@ jobs:
 
   doc:
     name: Doc build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04 # TODO: remove pin when fixed (#5408)
     env:
       CARGO_MDBOOK_VERSION: 0.4.21
       RUSTDOCFLAGS: -Dbroken_intra_doc_links --cfg nightlydoc
@@ -335,7 +335,7 @@ jobs:
   # Build and test the wasi-nn module.
   test_wasi_nn:
     name: Test wasi-nn module
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04 # TODO: remove pin when fixed (#5408)
     steps:
       - uses: actions/checkout@v3
         with: