I had the following configuration of my GH Action workflow of a simple Maven project.

name: Java CI
on:

pull_request:

branches:

- master
jobs:

tests:

runs-on: ubuntu-latest

steps:

- uses: actions/checkout@v2

- name: Set up JDK 11

uses: actions/setup-java@v1

with:

java-version: 11

- name: Cache Maven repository

uses: actions/cache@v2

with:

path: ~/.m2/repository

key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}

restore-keys: |

${{ runner.os }}-maven-

- name: Verify with Maven

run: mvn -B -e -ff clean verify

Everything used to work, till I move the Maven project into a code subdirectory:

name: Java CI
on:

pull_request:

paths:

- code/**

branches:

- master
jobs:

tests:

runs-on: ubuntu-latest

steps:

- uses: actions/checkout@v2

- name: Set up JDK 11

uses: actions/setup-java@v1

with:

java-version: 11

- name: Cache Maven repository

uses: actions/cache@v2

with:

path: ~/.m2/repository

key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}

restore-keys: |

${{ runner.os }}-maven-

- name: Verify with Maven

run: mvn -B -e -ff clean verify --file code/pom.xml

Now in the log I see the cache step says Cache not found for input keys: Linux-maven-xxxxxxx, Linux-maven-.

Does anyone know why the cache is not working with the project in a subdirectory?
Thanks.