diff --git a/pre-commit_semantic-release.sh b/pre-commit_semantic-release.sh
index f199a7b..6cc9931 100755
--- a/pre-commit_semantic-release.sh
+++ b/pre-commit_semantic-release.sh
@@ -12,7 +12,36 @@ set -x
 # echo "${8}"
 # echo "${9}"
 # echo "${10}"
-echo "${TRAVIS_PULL_REQUEST}"
+echo "TRAVIS_ALLOW_FAILURE: ${TRAVIS_ALLOW_FAILURE}"
+echo "TRAVIS_APP_HOST: ${TRAVIS_APP_HOST}"
+echo "TRAVIS_BRANCH: ${TRAVIS_BRANCH}"
+echo "TRAVIS_BUILD_DIR: ${TRAVIS_BUILD_DIR}"
+echo "TRAVIS_BUILD_ID: ${TRAVIS_BUILD_ID}"
+echo "TRAVIS_BUILD_NUMBER: ${TRAVIS_BUILD_NUMBER}"
+echo "TRAVIS_BUILD_WEB_URL: ${TRAVIS_BUILD_WEB_URL}"
+echo "TRAVIS_COMMIT: ${TRAVIS_COMMIT}"
+echo "TRAVIS_COMMIT_MESSAGE: ${TRAVIS_COMMIT_MESSAGE}"
+echo "TRAVIS_COMMIT_RANGE: ${TRAVIS_COMMIT_RANGE}"
+echo "TRAVIS_COMPILER: ${TRAVIS_COMPILER}"
+echo "TRAVIS_DEBUG_MODE: ${TRAVIS_DEBUG_MODE}"
+echo "TRAVIS_DIST: ${TRAVIS_DIST}"
+echo "TRAVIS_EVENT_TYPE: ${TRAVIS_EVENT_TYPE}"
+echo "TRAVIS_JOB_ID: ${TRAVIS_JOB_ID}"
+echo "TRAVIS_JOB_NAME: ${TRAVIS_JOB_NAME}"
+echo "TRAVIS_JOB_NUMBER: ${TRAVIS_JOB_NUMBER}"
+echo "TRAVIS_JOB_WEB_URL: ${TRAVIS_JOB_WEB_URL}"
+echo "TRAVIS_OS_NAME: ${TRAVIS_OS_NAME}"
+echo "TRAVIS_OSX_IMAGE: ${TRAVIS_OSX_IMAGE}"
+echo "TRAVIS_PULL_REQUEST: ${TRAVIS_PULL_REQUEST}"
+echo "TRAVIS_PULL_REQUEST_BRANCH: ${TRAVIS_PULL_REQUEST_BRANCH}"
+echo "TRAVIS_PULL_REQUEST_SHA: ${TRAVIS_PULL_REQUEST_SHA}"
+echo "TRAVIS_PULL_REQUEST_SLUG: ${TRAVIS_PULL_REQUEST_SLUG}"
+echo "TRAVIS_REPO_SLUG: ${TRAVIS_REPO_SLUG}"
+echo "TRAVIS_SECURE_ENV_VARS: ${TRAVIS_SECURE_ENV_VARS}"
+echo "TRAVIS_SUDO: ${TRAVIS_SUDO}"
+echo "TRAVIS_TEST_RESULT: ${TRAVIS_TEST_RESULT}"
+echo "TRAVIS_TAG: ${TRAVIS_TAG}"
+echo "TRAVIS_BUILD_STAGE_NAME: ${TRAVIS_BUILD_STAGE_NAME}"
 
 ###############################################################################
 # (A) Update `FORMULA` with `${nextRelease.version}`