843/home/travis/build/PowerShell/PowerShell/src/System.Management.Automation/help/UpdatableHelpSystem.cs(1650,106): error CS0117: 'EnumerationOptions' does not contain a definition for 'MatchCasing' [/home/travis/build/PowerShell/PowerShell/src/System.Management.Automation/System.Management.Automation.csproj]
Seems it is regression in .Net Core 2.1.1.
Please see
PowerShell/PowerShell#7129
https://travis-ci.org/PowerShell/PowerShell/jobs/395523693
Seems it is regression in .Net Core 2.1.1.
/cc @JeremyKuhne