Running with gitlab-runner 16.4.0 (6e766faf)
  on GitLab Runner (ITS) t9xE7-ey, system ID: r_nGekAsQkPa8n
section_start:1700466113:prepare_executor
Preparing the "docker" executor
Using Docker executor with image gliderlabs/herokuish:latest ...
WARNING: Container based cache volumes creation is disabled. Will not create volume for "/cache"
Starting service postgres:9.6.16 ...
Pulling docker image postgres:9.6.16 ...
Using docker image sha256:cb2889ab0680ba518e0dc1bb5a09cbe23f1e5908d9e484daea3d34f5e092ec17 for postgres:9.6.16 with digest postgres@sha256:d6a6badb2b5b22de5e135490a217522cecc2ae90fe35b33290615827569310a1 ...
Waiting for services to be up and running (timeout 30 seconds)...
Pulling docker image gliderlabs/herokuish:latest ...
Using docker image sha256:d22d47939ab7ebbbaf765db4ce111f1ab054fa92fbbd62c9be8f2374385f556a for gliderlabs/herokuish:latest with digest gliderlabs/herokuish@sha256:0cd4d2abc00b6c24e7cd095f7c3433beaca9013680e3512c5f6f0b86894c01f8 ...
section_end:1700466120:prepare_executor
section_start:1700466120:prepare_script
Preparing environment
Running on runner-t9xe7-ey-project-20564-concurrent-0 via 00dde3a7082e...
section_end:1700466121:prepare_script
section_start:1700466121:get_sources
Getting source from Git repository
Fetching changes with git depth set to 20...
Initialized empty Git repository in /builds/taliao/SneakySalamander/.git/
Created fresh repository.
Checking out c835df19 as detached HEAD (ref is main)...

Skipping Git submodules setup
section_end:1700466141:get_sources
section_start:1700466141:step_script
Executing "step_script" stage of the job script
Using docker image sha256:d22d47939ab7ebbbaf765db4ce111f1ab054fa92fbbd62c9be8f2374385f556a for gliderlabs/herokuish:latest with digest gliderlabs/herokuish@sha256:0cd4d2abc00b6c24e7cd095f7c3433beaca9013680e3512c5f6f0b86894c01f8 ...
$ if [ -z ${KUBERNETES_PORT+x} ]; then # collapsed multi-line command
$ export DATABASE_URL="postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${DB_HOST}:5432/${POSTGRES_DB}"
$ cp -R . /tmp/app
$ /bin/herokuish buildpack test
-----> Unable to select a buildpack
section_end:1700466157:step_script
section_start:1700466157:cleanup_file_variables
Cleaning up project directory and file based variables
section_end:1700466158:cleanup_file_variables
ERROR: Job failed: exit code 1