PS1 failed without error diagnosis

[wli3]

For this issue the error is simply the following

https://dev.azure.com/dnceng/public/_build/results?buildId=492107&view=logs&j=1f7f0ae9-6d8b-5300-18e4-8627865be549&t=a4594482-09b1-5607-9af7-3db5e61ee1a3

2020-01-21T20:01:12.6940988Z [2020/01/21 20:01:12][INFO] DotNet Install Path: 'D:\a\1\s\tools\dotnet\x64'
2020-01-21T20:01:12.6941667Z [2020/01/21 20:01:12][INFO] Downloading https://dot.net/v1/dotnet-install.ps1
2020-01-21T20:01:14.8182491Z [2020/01/21 20:01:14][INFO] $ pushd "D:\a\1\s"
2020-01-21T20:01:14.8183653Z [2020/01/21 20:01:14][INFO] $ powershell.exe -NoProfile -ExecutionPolicy Bypass D:\a\1\s\tools\dotnet\x64\dotnet-install.ps1 -InstallDir D:\a\1\s\tools\dotnet\x64 -Architecture x64 -Channel release/3.1.2xx
2020-01-21T20:01:16.1690996Z [2020/01/21 20:01:16][INFO] dotnet-install: Downloading link: https://dotnetcli.azureedge.net/dotnet/Sdk/3.1.200-preview-014917/dotnet-sdk-3.1.200-preview-014917-win-x64.zip
2020-01-21T20:01:17.4609587Z [2020/01/21 20:01:17][INFO] dotnet-install: Extracting zip from https://dotnetcli.azureedge.net/dotnet/Sdk/3.1.200-preview-014917/dotnet-sdk-3.1.200-preview-014917-win-x64.zip
2020-01-21T20:01:30.7387155Z [2020/01/21 20:01:30][INFO] ".NET Core SDK" with version = 3.1.200-preview-014917 failed to install with an unknown error.
2020-01-21T20:01:30.7388687Z [2020/01/21 20:01:30][INFO] At D:\a\1\s\tools\dotnet\x64\dotnet-install.ps1:678 char:5
2020-01-21T20:01:30.7389370Z [2020/01/21 20:01:30][INFO] +     throw "`"$assetName`" with version = $SpecificVersion failed to i ...
2020-01-21T20:01:30.7389836Z [2020/01/21 20:01:30][INFO] +     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2020-01-21T20:01:30.7390375Z [2020/01/21 20:01:30][INFO]     + CategoryInfo          : OperationStopped: (".NET Core SDK"... unknown error.:String) [], RuntimeException
2020-01-21T20:01:30.7390856Z [2020/01/21 20:01:30][INFO]     + FullyQualifiedErrorId : ".NET Core SDK" with version = 3.1.200-preview-014917 failed to install with an unknown
2020-01-21T20:01:30.7391357Z [2020/01/21 20:01:30][INFO]    error.
2020-01-21T20:01:30.7391761Z [2020/01/21 20:01:30][INFO] 
2020-01-21T20:01:30.8569932Z [2020/01/21 20:01:30][ERROR] Process exited with status 1
2020-01-21T20:01:30.8575593Z [2020/01/21 20:01:30][INFO] $ popd

[donJoseLuis]

The requests makes sense, failures should be made obvious in the script's artifacts.
@bozturkMSFT , let's take this one after we wrap up the high pri build-blocker dotnet/sdk#11320

[donJoseLuis]

@wli3 regretfully the linked build no longer exists. From the output you shared we can deduce the invocation parameters.

1. was this a consistent repro for you OR flaky?
2. do you recall any out of the ordinary situation around this problem? "Special" conditions on the machine running the script, etc.

[donJoseLuis]

two issues here to address...

• scripts need a better error message than: "...failed to install with an unknown error." Not very useful
• the root-cause of the actual failure

[wli3]

The issue looks no longer repros. We don't have to spend time to dig now. But we should add better error message.

[donJoseLuis]

Thanks @wli3 , you continue to be our best customer :)

We're wrapping up prioritizing the backlog to begin improving resiliency & diagnostics.

[donJoseLuis]

@bozturkMSFT let's keep this item open to ensure the particular poor diagnostics are improved, even if the issue no longer reproduces.

[bekir-ozturk]

As part of this issue, let's make sure we print a meaningful message when TLS1.2 is not enabled, instead of showing a generic "download failed" error.