'dotnet tool restore' segmentation fault on Ubuntu 18.04.5

[older]

We're running dotnet tool restore as part of build process on private Azure DevOps build agent and it produces this error approximately 1 out of 10 builds. This is how it looks like in build logs:

...
Restore was successful.
Segmentation fault (core dumped)
... error MSB3073: The command "dotnet tool restore" exited with code 139.

Here's output from uname -srvmpio on the build server:

Linux 4.15.0-117-generic #118-Ubuntu SMP Fri Sep 4 20:02:41 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

I was able to reproduce the error outside of build process and saved core dump. Not sure if it is a good idea to post it here publicly, but I can send it if requested. We're using .NET Core SDK 3.1.404. Output from dotnet --info dotnet--info.txt

[sfoslund]

@wli3 is this a known tools issue?