install yarn “Travis CI detects the use of Yarn by the presence of yarn.lock in the repository root. If it is available, Travis CI will install yarn if necessary, and execute yarn as the default install command.” — apparently not
install yarn
“Travis CI detects the use of Yarn by the presence of yarn.lock in the repository root. If it is available, Travis CI will install yarn if necessary, and execute yarn as the default install command.”
— apparently not

jonphipps/Metadata-Registry,jonphipps/Metadata-Registry,jonphipps/Metadata-Registry,jonphipps/Metadata-Registry,jonphipps/Metadata-Registry,jonphipps/Metadata-Registry,jonphipps/Metadata-Registry,jonphipps/Metadata-Registry,jonphipps/Metadata-Registry,jonphipps/Metadata-Registry