Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  'contrib.url'
find_available_versions: no visible global function definition for
  'available.packages'
install_version: no visible global function definition for
  'contrib.url'
install_version: no visible global function definition for
  'available.packages'
install_version: no visible global function definition for
  'install_url'
load_available_packages: no visible global function definition for
  'contrib.url'
validate_installed_package: no visible global function definition for
  'installed.packages'
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  ‘contrib.url’
find_available_versions: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘contrib.url’
install_version: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘install_url’
load_available_packages: no visible global function definition for
  ‘contrib.url’
validate_installed_package: no visible global function definition for
  ‘installed.packages’
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  ‘contrib.url’
find_available_versions: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘contrib.url’
install_version: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘install_url’
load_available_packages: no visible global function definition for
  ‘contrib.url’
validate_installed_package: no visible global function definition for
  ‘installed.packages’
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  ‘contrib.url’
find_available_versions: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘contrib.url’
install_version: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘install_url’
load_available_packages: no visible global function definition for
  ‘contrib.url’
validate_installed_package: no visible global function definition for
  ‘installed.packages’
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  'contrib.url'
find_available_versions: no visible global function definition for
  'available.packages'
install_version: no visible global function definition for
  'contrib.url'
install_version: no visible global function definition for
  'available.packages'
install_version: no visible global function definition for
  'install_url'
load_available_packages: no visible global function definition for
  'contrib.url'
validate_installed_package: no visible global function definition for
  'installed.packages'
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  ‘contrib.url’
find_available_versions: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘contrib.url’
install_version: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘install_url’
load_available_packages: no visible global function definition for
  ‘contrib.url’
validate_installed_package: no visible global function definition for
  ‘installed.packages’
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  ‘contrib.url’
find_available_versions: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘contrib.url’
install_version: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘install_url’
load_available_packages: no visible global function definition for
  ‘contrib.url’
validate_installed_package: no visible global function definition for
  ‘installed.packages’
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  ‘contrib.url’
find_available_versions: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘contrib.url’
install_version: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘install_url’
load_available_packages: no visible global function definition for
  ‘contrib.url’
validate_installed_package: no visible global function definition for
  ‘installed.packages’
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  ‘contrib.url’
find_available_versions: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘contrib.url’
install_version: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘install_url’
load_available_packages: no visible global function definition for
  ‘contrib.url’
validate_installed_package: no visible global function definition for
  ‘installed.packages’
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  'contrib.url'
find_available_versions: no visible global function definition for
  'available.packages'
install_version: no visible global function definition for
  'contrib.url'
install_version: no visible global function definition for
  'available.packages'
install_version: no visible global function definition for
  'install_url'
load_available_packages: no visible global function definition for
  'contrib.url'
validate_installed_package: no visible global function definition for
  'installed.packages'
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  ‘contrib.url’
find_available_versions: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘contrib.url’
install_version: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘install_url’
load_available_packages: no visible global function definition for
  ‘contrib.url’
validate_installed_package: no visible global function definition for
  ‘installed.packages’
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  ‘contrib.url’
find_available_versions: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘contrib.url’
install_version: no visible global function definition for
  ‘available.packages’
install_version: no visible global function definition for
  ‘install_url’
load_available_packages: no visible global function definition for
  ‘contrib.url’
validate_installed_package: no visible global function definition for
  ‘installed.packages’
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.
Malformed Title field: should not end in a period.
find_available_versions: no visible global function definition for
  'contrib.url'
find_available_versions: no visible global function definition for
  'available.packages'
install_version: no visible global function definition for
  'contrib.url'
install_version: no visible global function definition for
  'available.packages'
install_version: no visible global function definition for
  'install_url'
load_available_packages: no visible global function definition for
  'contrib.url'
validate_installed_package: no visible global function definition for
  'installed.packages'
Undefined global functions or variables:
  available.packages contrib.url install_url installed.packages
Consider adding
  importFrom("utils", "available.packages", "contrib.url",
             "installed.packages")
to your NAMESPACE file.