service improvements (#233)

.github/workflows/bench.yml

@@ -1,29 +0,0 @@
-name: Benchmark (Linux)
-
-on:
-  pull_request:
-    types: [opened, synchronize, reopened]
-  push:
-    branches:
-      - master
-      - '1.0'
-
-jobs:
-  check_benchmark:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly
-          profile: minimal
-          override: true
-
-      - name: Check benchmark
-        uses: actions-rs/cargo@v1
-        with:
-          command: bench
-          args: --package=actix-service