18.04 runner got removed

Author: hfrick

.github/workflows/R-CMD-check.yaml

@@ -29,13 +29,13 @@ jobs:
           - {os: windows-latest, r: '3.6'}
 
           # Use older ubuntu to maximise backward compatibility
-          - {os: ubuntu-18.04,   r: 'devel', http-user-agent: 'release'}
-          - {os: ubuntu-18.04,   r: 'release'}
-          - {os: ubuntu-18.04,   r: 'oldrel-1'}
-          - {os: ubuntu-18.04,   r: 'oldrel-2'}
+          - {os: ubuntu-20.04,   r: 'devel', http-user-agent: 'release'}
+          - {os: ubuntu-20.04,   r: 'release'}
+          - {os: ubuntu-20.04,   r: 'oldrel-1'}
+          - {os: ubuntu-20.04,   r: 'oldrel-2'}
           # kernlab can't be installed for R <= 3.5
-          #- {os: ubuntu-18.04,   r: 'oldrel-3'}
-          #- {os: ubuntu-18.04,   r: 'oldrel-4'}
+          #- {os: ubuntu-20.04,   r: 'oldrel-3'}
+          #- {os: ubuntu-20.04,   r: 'oldrel-4'}
 
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}

dials.Rproj

@@ -17,6 +17,5 @@ StripTrailingWhitespace: Yes
 
 BuildType: Package
 PackageUseDevtools: Yes
-PackageCleanBeforeInstall: Yes
 PackageInstallArgs: --no-multiarch --with-keep.source
 PackageRoxygenize: rd,collate,namespace