Why does this fail on Ubuntu?

Author: badeball

.github/workflows/build.yml

@@ -7,27 +7,14 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  prepare-versions:
-    runs-on: ubuntu-latest
-    outputs:
-      matrix: ${{ steps.set-matrix.outputs.matrix }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      - id: set-matrix
-        name: Prepare
-        run: echo "matrix=$(node -p "JSON.stringify(require('./package.json').peerDependencies['cypress'].split(' || '))")" >> $GITHUB_OUTPUT
-      - run: npm -v
-
   test:
-    needs: prepare-versions
     runs-on: ubuntu-latest
     container:
       image: cypress/browsers:latest
     strategy:
       fail-fast: false
       matrix:
-        cypress-version: ${{fromJson(needs.prepare-versions.outputs.matrix)}}
+        cypress-version: ["13"]
     steps:
       - uses: actions/setup-node@v4
         with:
@@ -56,7 +43,9 @@ jobs:
       - name: Build
         run: npm run build
       - name: Test
-        run: npm run test
+        env:
+          DEBUG: cypress:electron,cypress-configuration,cypress-cucumber-preprocessor
+        run: npm run test:integration -- features/reporters/usage.feature:91
       - name: Versions
         run: |
           npx cypress --version
@@ -93,9 +82,6 @@ jobs:
       - name: Remove Webpack test
         run: rm features/loaders/webpack.feature
       - name: Test
-        run: npm run test:integration
-      - name: Versions
-        run: |
-          npx cypress --version
-          node --version
-          npm --version
+        env:
+          DEBUG: cypress:electron,cypress-configuration,cypress-cucumber-preprocessor
+        run: npm run test:integration -- features/reporters/usage.feature:91

.github/workflows/examples-branch.yml

@@ -10,12 +10,6 @@ import { assertAndReturn } from "../helpers/assertions";
 
 import debug from "../helpers/debug";
 
-const exists = (path: string) =>
-  fs.access(path).then(
-    () => true,
-    () => false,
-  );
-
 export function createEsbuildPlugin(
   configuration: Cypress.PluginConfigOptions,
   options: { prettySourceMap: boolean } = { prettySourceMap: false },
@@ -39,13 +33,13 @@ export function createEsbuildPlugin(
             (await fs.readFile(sourceMapLocation)).toString(),
           );
 
-          const lastSource = sourceMap.sources[sourceMap.sources.length - 1];
-
-          const isRelativeToProjectRoot = (file: string) =>
-            exists(path.join(configuration.projectRoot, file));
+          const lastSource: string | undefined =
+            sourceMap.sources[sourceMap.sources.length - 1];
 
           const needPrettify =
-            lastSource != null && !(await isRelativeToProjectRoot(lastSource));
+            lastSource?.startsWith(
+              path.relative(path.dirname(outfile), configuration.projectRoot),
+            ) ?? false;
 
           /**
            * There are numerous issues regarding the sources property in esbuild, particularly when
@@ -80,6 +74,9 @@ export function createEsbuildPlugin(
             debug("esbuild: using original sources");
           }
 
+          // debug("sources after (all)", sourceMap.sources);
+          debug("sources after (last)", sourceMap.sources.slice(-5));
+
           await fs.rm(sourceMapLocation);
 
           const encoded = Buffer.from(JSON.stringify(sourceMap)).toString(