Auto merge of #22464 - servo:tc-nigthly, r=jdm

Taskcluster: build Servo Nightly for Linux, upload to S3

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.taskcluster.yml

@@ -27,9 +27,14 @@ tasks:
         scopes:
           - "assume:repo:github.com/servo/servo:branch:${event.ref[11:]}"
         routes:
-          # len("refs/heads/") == 11, so event.ref[11:] is the branch name
-          - "tc-treeherder.v2._/servo-${event.ref[11:]}.${event.after}"
-          - "tc-treeherder-staging.v2._/servo-${event.ref[11:]}.${event.after}"
+          $let:
+            treeherder_repo:
+              $if: "event.ref[:15] != 'refs/heads/try-'"
+              then: "servo-${event.ref[11:]}"
+              else: "servo-try"
+          in:
+            - "tc-treeherder.v2._/${treeherder_repo}.${event.after}"
+            - "tc-treeherder-staging.v2._/${treeherder_repo}.${event.after}"
         extra:
           treeherder:
             machine: {platform: Linux}

etc/ci/buildbot_steps.yml

@@ -105,8 +105,6 @@ linux-nightly:
   - ./mach clean-cargo-cache --keep 3 --force
   - ./etc/ci/clean_build_artifacts.sh
   - ./mach build --release -p servo
-  - ./mach package --release
-  - ./mach upload-nightly linux
   - ./mach test-perf
   - python3 ./etc/ci/performance/download_buildbot_timings.py --verbose
   - aws s3 sync --size-only --acl public-read ./etc/ci/performance/output s3://servo-perf

etc/taskcluster/decision_task.py

@@ -73,6 +73,7 @@ def main(task_for):
     elif task_for == "daily":
         daily_tasks_setup()
         with_rust_nightly()
+        linux_nightly()
 
 
 # These are disabled in a "real" decision task,
@@ -298,6 +299,31 @@ def windows_release():
     )
 
 
+def linux_nightly():
+    return (
+        linux_build_task("Nightly build and upload")
+        .with_treeherder("Linux x64", "Nightly")
+        .with_features("taskclusterProxy")
+        .with_scopes("secrets:get:project/servo/s3-upload")
+        .with_env(PY=r"""if 1:
+            import urllib, json
+            url = "http://taskcluster/secrets/v1/secret/project/servo/s3-upload"
+            secret = json.load(urllib.urlopen(url))["secret"]
+            open("/root/.aws/credentials", "w").write(secret["credentials_file"])
+        """)
+        # Not reusing the build made for WPT because it has debug assertions
+        .with_script("""
+            ./mach build --release
+            ./mach package --release
+            mkdir /root/.aws
+            python -c "$PY"
+            ./mach upload-nightly linux
+        """)
+        .with_artifacts("/repo/target/release/servo-tech-demo.tar.gz")
+        .find_or_create("build.linux_x64_nightly" + CONFIG.git_sha)
+    )
+
+
 def linux_wpt():
     release_build_task = linux_release_build(with_debug_assertions=True)
     total_chunks = 2