vscode-csharp: omnisharp crashes on fedora 23

Environment data

dotnet --info output:

.NET Command Line Tools (1.0.0-preview2-003131)

Product Information:
 Version:            1.0.0-preview2-003131
 Commit SHA-1 hash:  635cf40e58

Runtime Environment:
 OS Name:     fedora
 OS Version:  23
 OS Platform: Linux
 RID:         fedora.23-x64

VS Code version: 1.5.2 C# Extension version:1.4.1

Steps to reproduce

Open .NET Core project with project.json

Expected behavior

Intellisense should be working

Actual behavior

Intellisense is not working. The omnisharp log output shows omnisharp is starting:

Starting OmniSharp server at 9/21/2016, 11:36:52 AM
    Target: ...

OmniSharp server started
    Path: /home/tmds/.vscode/extensions/ms-vscode.csharp-1.4.1/out/.omnisharp-coreclr/OmniSharp
    PID: 2606

OmniSharp: -s /home/tmds/... --hostPID 2539 DotNet:enablePackageRestore=false --encoding utf-8 --stdio
[INFORMATION:OmniSharp.Startup] Omnisharp server running using Stdio at location '...' on host 2539.
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Initializing in ...
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Auto package restore: False
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Update workspace context
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Update project ...
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Add project ... => 4b4908b9-a9be-442b-8057-1a1b3ae6a409
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Update project ...
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Add project ... => c00ae40e-9b59-4507-86d9-7903ac95bbaf
...
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem] Resolving projects references
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem]   Processing [ProjectState] .../.NETCoreApp,Version=v1.0
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem]     Added 182 and removed 0 file references
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem]     Added 12 and removed 0 project references
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem]     Added 59 and removed 0 documents.
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem]   Processing [ProjectState] .../.NETStandard,Version=v1.6
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem]     Added 67 and removed 0 file references
[INFORMATION:OmniSharp.DotNet.DotNetProjectSystem]     Added 2 and removed 0 project references
...
[INFORMATION:OmniSharp#MSBuild] No solution files found in '...'
[INFORMATION:OmniSharp.Startup] Configuration finished.
[INFORMATION:OmniSharp.Middleware.LoggingMiddleware] /projects: 200 65ms
[INFORMATION:OmniSharp.Middleware.LoggingMiddleware] /projects: 200 65ms
[INFORMATION:OmniSharp.Middleware.LoggingMiddleware] /projects: 200 10ms

Intellisense is not working. dmesg shows omnisharp has crashed.

[   49.690745] traps: OmniSharp[2631] general protection ip:7f6ee8bb4b1e sp:7f6e46642bb0 error:0 in libpthread-2.22.so[7f6ee8ba8000+18000]

Restarting omnisharp in vscode makes intellisense work for a split second until OmniSharp crashes again.