Provisioning fails with libclang in 5.9 branch

http://10.212.3.36/coin/integration/qt/qtbase/tasks/web_qt_qtbase_1534230440902

http://10.212.3.36/coin/api/results/provisioning/qtci-windows-10-x86_64-10-524912/provision_1534322535/log.txt.gz

Cleaning C:\Windows\Temp\jdk-8u144.exe.. Setting environment variable "JAVA_HOME" to "C:\Program Files\Java\jdk1.8.0_144" Adding C:\Program Files\Java\jdk1.8.0_144\bin to Path agent:2018/08/14 07:43:19 pkg.go:27: Success running powershell.exe -ExecutionPolicy RemoteSigned -NonInteractive -File C:\Users\qt\AppData\Local\Temp\coinpowershellwrapper.ps1 agent:2018/08/14 07:43:19 build.go:403: Running provisioning powershell script: "C:\Users\qt\AppData\Local\Temp\provisioning-151983395\coin\provisioning\qtci-windows-10-x86_64\08-libclang.ps1" Running C:\Users\qt\AppData\Local\Temp\provisioning-151983395\coin\provisioning\qtci-windows-10-x86_64\08-libclang.ps1 Downloading from cached location (https://download.qt.io/development_releases/prebuilt/libclang/libclang-release_40-windows-vs2015_64.7z) to c:\users\qt\downloads\libclang.7z Cached download failed: Downloading from official location: https://download.qt.io/development_releases/prebuilt/libclang/libclang-release_40-windows-vs2015_64.7z Caught System.Net.WebException The request was aborted: Could not create SSL/TLS secure channel. agent:2018/08/14 07:43:20 build.go:423: Executing scheduled instruction 1 of 1 - Upload all core dumps if there are some agent:2018/08/14 07:43:20 build.go:425: agent:2018/08/14 07:43:20 agent.go:198: Provision failed agent:2018/08/14 07:43:20 agent.go:94: ERROR building: Provisioning failed: Error running powershell script "C:\Users\qt\AppData\Local\Temp\provisioning-151983395\coin\provisioning\qtci-windows-10-x86_64\08-libclang.ps1": Error running powershell.exe -ExecutionPolicy RemoteSigned -NonInteractive -File C:\Users\qt\AppData\Local\Temp\coinpowershellwrapper.ps1: exit status 1