Appears you are using Xenial build image. Could you try updating to the Focal build image and see if that works. Site settings > Build & deploy > Continuous Deployment > Build image selection
Yes, I wondered whether there was an updated image. However, that’s failing in a different way:
4:13:31 PM: Build ready to start
4:13:33 PM: build-image version: fa439ad1ab9393b2c0d449d8d7c033927683f4b0
4:13:33 PM: build-image tag: v4.3.0
4:13:33 PM: buildbot version: 1ed4041128c7c024b4c4b72e2ad30a0740c570a7
4:13:33 PM: Fetching cached dependencies
4:13:33 PM: Failed to fetch cache, continuing with build
4:13:33 PM: Starting to prepare the repo for build
4:13:34 PM: No cached dependencies found. Cloning fresh repo
4:13:34 PM: git clone git@bitbucket.org:funkydan2/pastor-tech-site
4:13:35 PM: Preparing Git Reference refs/heads/master
4:13:36 PM: Parsing package.json dependencies
4:13:36 PM: Different build command detected, going to use the one specified in the Netlify configuration file: 'hugo --gc --minify' versus 'hugo' in the Netlify UI
4:13:36 PM: Starting build script
4:13:36 PM: Installing dependencies
4:13:36 PM: Python version set to 2.7
4:13:37 PM: Downloading and installing node v8.17.0...
4:13:37 PM: Downloading https://nodejs.org/dist/v8.17.0/node-v8.17.0-linux-x64.tar.xz...
4:13:37 PM: Computing checksum with sha256sum
4:13:37 PM: Checksums matched!
4:13:39 PM: Now using node v8.17.0 (npm v6.13.4)
4:13:39 PM: Started restoring cached build plugins
4:13:39 PM: Finished restoring cached build plugins
4:13:39 PM: Attempting ruby version 2.3.6, read from environment
4:13:40 PM: Required ruby-2.3.6 is not installed - installing.
4:13:41 PM: Searching for binary rubies, this might take some time.
4:13:41 PM: Found remote file https://rvm_io.global.ssl.fastly.net/binaries/ubuntu/20.04/x86_64/ruby-2.3.6.tar.bz2
4:13:41 PM: Checking requirements for ubuntu.
4:13:41 PM: Missing required packages: libssl1.0-dev
4:13:41 PM: RVM autolibs is now configured with mode '2' =>
4:13:41 PM: 'Allow RVM to use package manager if found, fail if dependencies are missing. This is default.',
4:13:41 PM: please run `rvm autolibs enable` to let RVM do its job or run and read `rvm autolibs [help]`
4:13:41 PM: or visit https://rvm.io/rvm/autolibs for more information.
4:13:41 PM: Found undesired packages: libssl-dev
4:13:41 PM: RVM autolibs is now configured with mode '2' =>
4:13:41 PM: 'Allow RVM to use package manager if found, fail if dependencies are missing. This is default.',
4:13:41 PM: please run `rvm autolibs enable` to let RVM do its job or run and read `rvm autolibs [help]`
4:13:41 PM: or visit https://rvm.io/rvm/autolibs for more information.
4:13:41 PM: Requirements installation failed with status: 1.
4:13:41 PM: ruby-2.3.6 - #gemset created /opt/buildhome/.rvm/gems/ruby-2.3.6
4:13:41 PM: Required ruby-2.3.6 is not installed - installing.
4:13:42 PM: Searching for binary rubies, this might take some time.
4:13:42 PM: Found remote file https://rvm_io.global.ssl.fastly.net/binaries/ubuntu/20.04/x86_64/ruby-2.3.6.tar.bz2
4:13:42 PM: Checking requirements for ubuntu.
4:13:42 PM: Missing required packages: libssl1.0-dev
4:13:42 PM: RVM autolibs is now configured with mode '2' =>
4:13:42 PM: 'Allow RVM to use package manager if found, fail if dependencies are missing. This is default.',
4:13:42 PM: please run `rvm autolibs enable` to let RVM do its job or run and read `rvm autolibs [help]`
4:13:42 PM: or visit https://rvm.io/rvm/autolibs for more information.
4:13:42 PM: Found undesired packages: libssl-dev
4:13:42 PM: RVM autolibs is now configured with mode '2' =>
4:13:42 PM: 'Allow RVM to use package manager if found, fail if dependencies are missing. This is default.',
4:13:42 PM: please run `rvm autolibs enable` to let RVM do its job or run and read `rvm autolibs [help]`
4:13:42 PM: or visit https://rvm.io/rvm/autolibs for more information.
4:13:42 PM: Requirements installation failed with status: 1.
4:13:43 PM: ruby-2.3.6 - #importing gemsetfile /opt/buildhome/.rvm/gemsets/default.gems evaluated to empty gem list
4:13:43 PM: ruby-2.3.6 - #generating default wrappers.................
4:13:43 PM: Error running 'run_gem_wrappers regenerate',
4:13:43 PM: please read /opt/buildhome/.rvm/log/1630649623_ruby-2.3.6/gemset.wrappers.default.log
4:13:43 PM: Using /opt/buildhome/.rvm/gems/ruby-2.3.6
4:13:43 PM: Warning! Executable 'ruby' missing, something went wrong with this ruby installation!
4:13:43 PM: Warning! Executable 'gem' missing, something went wrong with this ruby installation!
4:13:43 PM: Warning! Executable 'irb' missing, something went wrong with this ruby installation!
4:13:43 PM: Using ruby version 2.3.6
4:13:43 PM: /opt/buildhome/.rvm/scripts/override_gem: line 19: gem: command not found
4:13:43 PM: Error installing bundler
4:13:43 PM: Build was terminated: Build script returned non-zero exit code: 1
4:13:43 PM: Creating deploy upload records
4:13:43 PM: Failing build: Failed to build site
4:13:43 PM: Failed during stage 'building site': Build script returned non-zero exit code: 1
4:13:43 PM: Finished processing build request in 10.128584508s
I think that might be to do with what I discovered in the thread linked above. Netlify pins tools to the version of your first build (or they used to). This can be overridden either through environment variables or relinking repositories.