Merge branch 'unstable' of https://github.com/sigp/lighthouse into je…

…malloc

� Conflicts:
�	Cargo.lock
�	beacon_node/http_metrics/Cargo.toml
�	beacon_node/network/src/attestation_service/tests/mod.rs

.github/ISSUE_TEMPLATE.md

@@ -5,7 +5,7 @@ Please provide a brief description of the issue.
 ## Version
 
 Please provide your Lighthouse and Rust version. Are you building from
-`master`, which commit?
+`stable` or `unstable`, which commit?
 
 ## Present Behaviour
 

.github/workflows/test-suite.yml

@@ -3,7 +3,7 @@ name: test-suite
 on:
   push:
     branches:
-      - master
+      - stable
       - staging
       - trying
       - 'pr/*'
@@ -12,6 +12,13 @@ env:
   # Deny warnings in CI
   RUSTFLAGS: "-D warnings"
 jobs:
+  target-branch-check:
+    name: target-branch-check
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
+    steps:
+        - name: Check that pull request is targeting unstable branch
+          run: test ${{ github.base_ref }} = "unstable"
   cargo-fmt:
     name: cargo-fmt
     runs-on: ubuntu-latest