.github: partially migrate from ubuntu-18.04 to ubuntu-20.04

* .github/workflows/ci.yml (runs-on): Switch from ubuntu-latest to
ubuntu-20.04 for whitespace-errors and *-x86_64 jobs.  Stick with
ubuntu-18.04 for *-x86 and *-x32 jobs until we figure out how to
obtain -lcrypt on ubuntu-20.04 for these architectures.

1 files changed, 21 insertions, 63 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5f24720d..579473dc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,14 +7,14 @@ env:
 
 jobs:
   whitespace-errors:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
     - uses: actions/checkout@v2
     - name: check
       run: git diff-index --check --cached 4b825dc642cb6eb9a060e54bf8d69288fbee4904
 
   gcc10-x86_64:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     env:
       CC: gcc-10
       TARGET: x86_64
@@ -28,9 +28,9 @@ jobs:
       run: ci/run-build-and-tests.sh
 
   gcc9-x86_64:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     env:
-      CC: gcc-9
+      CC: gcc
       TARGET: x86_64
     steps:
     - uses: actions/checkout@v2
@@ -42,7 +42,7 @@ jobs:
       run: ci/run-build-and-tests.sh
 
   gcc8-x86_64:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     env:
       CC: gcc-8
       TARGET: x86_64
@@ -55,10 +55,10 @@ jobs:
     - name: build check
       run: ci/run-build-and-tests.sh
 
-  gcc-x86_64:
-    runs-on: ubuntu-latest
+  clang10-x86_64:
+    runs-on: ubuntu-20.04
     env:
-      CC: gcc
+      CC: clang
       TARGET: x86_64
     steps:
     - uses: actions/checkout@v2
@@ -70,7 +70,7 @@ jobs:
       run: ci/run-build-and-tests.sh
 
   clang9-x86_64:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     env:
       CC: clang-9
       TARGET: x86_64
@@ -84,7 +84,7 @@ jobs:
       run: ci/run-build-and-tests.sh
 
   clang8-x86_64:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     env:
       CC: clang-8
       TARGET: x86_64
@@ -97,22 +97,8 @@ jobs:
     - name: build check
       run: ci/run-build-and-tests.sh
 
-  clang-x86_64:
-    runs-on: ubuntu-latest
-    env:
-      CC: clang
-      TARGET: x86_64
-    steps:
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 0
-    - name: install dependencies
-      run: ci/install-dependencies.sh
-    - name: build check
-      run: ci/run-build-and-tests.sh
-
   gcc10-x86:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     env:
       CC: gcc-10
       TARGET: x86
@@ -126,7 +112,7 @@ jobs:
       run: ci/run-build-and-tests.sh
 
   gcc9-x86:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     env:
       CC: gcc-9
       TARGET: x86
@@ -140,7 +126,7 @@ jobs:
       run: ci/run-build-and-tests.sh
 
   gcc8-x86:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     env:
       CC: gcc-8
       TARGET: x86
@@ -153,10 +139,10 @@ jobs:
     - name: build check
       run: ci/run-build-and-tests.sh
 
-  gcc-x86:
-    runs-on: ubuntu-latest
+  clang10-x86:
+    runs-on: ubuntu-18.04
     env:
-      CC: gcc
+      CC: clang-10
       TARGET: x86
     steps:
     - uses: actions/checkout@v2
@@ -168,7 +154,7 @@ jobs:
       run: ci/run-build-and-tests.sh
 
   clang9-x86:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     env:
       CC: clang-9
       TARGET: x86
@@ -182,7 +168,7 @@ jobs:
       run: ci/run-build-and-tests.sh
 
   clang8-x86:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     env:
       CC: clang-8
       TARGET: x86
@@ -195,22 +181,8 @@ jobs:
     - name: build check
       run: ci/run-build-and-tests.sh
 
-  clang-x86:
-    runs-on: ubuntu-latest
-    env:
-      CC: clang
-      TARGET: x86
-    steps:
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 0
-    - name: install dependencies
-      run: ci/install-dependencies.sh
-    - name: build check
-      run: ci/run-build-and-tests.sh
-
   gcc10-x32:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     env:
       CC: gcc-10
       TARGET: x32
@@ -224,7 +196,7 @@ jobs:
       run: ci/run-build-and-tests.sh
 
   gcc9-x32:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     env:
       CC: gcc-9
       TARGET: x32
@@ -238,7 +210,7 @@ jobs:
       run: ci/run-build-and-tests.sh
 
   gcc8-x32:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     env:
       CC: gcc-8
       TARGET: x32
@@ -250,17 +222,3 @@ jobs:
       run: ci/install-dependencies.sh
     - name: build check
       run: ci/run-build-and-tests.sh
-
-  gcc-x32:
-    runs-on: ubuntu-latest
-    env:
-      CC: gcc
-      TARGET: x32
-    steps:
-    - uses: actions/checkout@v2
-      with:
-        fetch-depth: 0
-    - name: install dependencies
-      run: ci/install-dependencies.sh
-    - name: build check
-      run: ci/run-build-and-tests.sh