travis: require arm64 tests to pass

Do not perform coverage analysis on arm64; travis times out.

.travis.yml

@@ -77,7 +77,6 @@ matrix:
     go: master
  allow_failures:
   - go: master
-  - arch: arm64 # TODO(kortschak): Remove this when failures have been resolved.
 
 before_install:
  - ${TRAVIS_BUILD_DIR}/.travis/run-parts ${TRAVIS_BUILD_DIR}/.travis/deps.d/${TRAVIS_OS_NAME}

.travis/script.d/test-coverage.sh

@@ -5,6 +5,13 @@ if [[ "${TRAVIS_SECURE_ENV_VARS}" != true ]]; then
 	exit 0
 fi
 
+# FIXME(kortschak): When we have arm64 assembly kernels,
+# reconsider this for the internal/asm packages.
+if [[ $(go env GOARCH) != "amd64" ]]; then
+	echo "skipping coverage - GOARCH != amd64"
+	exit 0
+fi
+
 ORIGIN_MASTER="$(git ls-remote origin master | cut -f1)"
 CURRENT="$(git rev-parse HEAD)"
 if [[ ${ORIGIN_MASTER} != ${CURRENT} ]]; then