--- re-building ‘intro_IsoXshift.Rmd’ using rmarkdown

processing vignette 'intro_IsoXshift.Rmd' failed with diagnostics:

Vignette re-building failed.

Build process failed

Process completed with exit code 1.

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v2, r-lib/actions/setup-pandoc@v1, r-lib/actions/setup-tinytex@v1. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, r-lib/actions/setup-pandoc@v1, r-lib/actions/setup-tinytex@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

r-lib/actions/setup-pandoc@v1 is deprecated. Please update your workflow to use the 'v2' version.

r-lib/actions/setup-tinytex@v1 is deprecated. Please update your workflow to use the 'v2' version.

Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 10 at (1)

Fortran 2018 deleted feature: Shared DO termination label 20 at (1)

Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 20 at (1)

Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 30 at (1)

Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 40 at (1)

Fortran 2018 deleted feature: Shared DO termination label 50 at (1)

Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 50 at (1)

Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 60 at (1)

Fortran 2018 deleted feature: DO termination statement which is not END DO or CONTINUE with label 90 at (1)