Don't wait for close future if the task is cancelled #222

Job	Run time
Construct integration matrix	3s
Soundness / Swift license headers check	7s
Unit Tests / Construct unit test matrix	3s
Cxx Interop / Construct Cxx interop matrix	6s
Release builds / Construct release build matrix	4s
Soundness / Documentation check	4m 57s
Soundness / Unacceptable language check	5s
Soundness / Broken symlinks check	5s
Soundness / License headers check	6s
Soundness / API breakage check	6m 48s
Soundness / Format check	41s
Soundness / Shell check	34s
Soundness / Python lint check	9s
Soundness / YAML lint check	7s
Static SDK / Static SDK / Linux (latest-release Jammy)	5m 2s
Static SDK / Static SDK / Linux (main Jammy)	6m 25s
Integration Tests / Linux (6.0)	10m 19s
Integration Tests / Linux (nightly-main)	12m 55s
Integration Tests / Linux (6.1)	10m 7s
Integration Tests / Linux (nightly-next)	13m 1s
Unit Tests / Unit tests / Linux (6.0)	4m 20s
Unit Tests / Unit tests / Linux (6.1)	4m 22s
Unit Tests / Unit tests / Linux (nightly-next)	5m 40s
Unit Tests / Unit tests / Linux (nightly-main)	5m 35s
Release builds / Release builds / Linux (6.1)	5m 26s
Release builds / Release builds / Linux (nightly-main)	6m 59s
Release builds / Release builds / Linux (nightly-next)	7m 9s
Release builds / Release builds / Linux (6.0)	5m 31s
Cxx Interop / Cxx interop / Linux (nightly-main)	5m 20s
Cxx Interop / Cxx interop / Linux (nightly-next)	5m 20s
Cxx Interop / Cxx interop / Linux (6.0)	4m 22s
Cxx Interop / Cxx interop / Linux (6.1)	4m 8s
	2h 15m 56s

Provide feedback