dotnet restore with .net 6 SDK Build 101 Hangs for 5 minutes then exits with code 1.

Describe the bug

Running a dotnet restore on a project which contains the following ProjectReference structure.

Project A -> Project B & Project C Project B -> Project C

the dotnet restore hangs at Determining projects to restore... The three files receive the following error message when verbosity is turned up to diag.

1:3>Done Building Project “<csproj path>” (_GenerateRestoreProjectPathWalk target(s)) – FAILED.

strace shows the following:

[pid 2232135] bind(8, {sa_family=AF_UNIX, sun_path="/tmp/dotnet-diagnostic-2232135-889863297-socket"}, 110) = 0
[pid 2232147] connect(123, {sa_family=AF_UNIX, sun_path="/tmp/MSBuild2231826"}, 22) = -1 ENOENT (No such file or directory)
[pid 2232147] connect(123, {sa_family=AF_UNIX, sun_path="/tmp/MSBuild2718148"}, 22) = -1 ENOENT (No such file or directory)
[pid 2232147] connect(123, {sa_family=AF_UNIX, sun_path="/tmp/MSBuild2232173"}, 22) = -1 ENOENT (No such file or directory)
[pid 2232147] connect(123, {sa_family=AF_UNIX, sun_path="/tmp/MSBuild2232173"}, 22) = -1 ENOENT (No such file or directory)
[pid 2232147] connect(123, {sa_family=AF_UNIX, sun_path="/tmp/MSBuild2232173"}, 22) = -1 ENOENT (No such file or directory)
[pid 2232147] connect(123, {sa_family=AF_UNIX, sun_path="/tmp/MSBuild2232173"}, 22) = -1 ENOENT (No such file or directory)
[pid 2232147] connect(123, {sa_family=AF_UNIX, sun_path="/tmp/MSBuild2232173"}, 22) = -1 ENOENT (No such file or directory)
[pid 2232147] connect(123, {sa_family=AF_UNIX, sun_path="/tmp/MSBuild2232173"}, 22) = -1 ENOENT (No such file or directory)
[pid 2232147] connect(123, {sa_family=AF_UNIX, sun_path="/tmp/MSBuild2232173"}, 22) = -1 ENOENT (No such file or directory)

This error just continues for about 5 minutes in the log before the process gives up.

What’s interesting is all three projects perform a dotnet restore if I remove their project dependencies. So it seems its something internal within the internal restore process when a project has ProjectReferences.

To Reproduce

I’m trying to reproduce this its happening on both of our Ubuntu 20.04 fully patched build servers.

Exceptions (if any)

No exceptions logged.

Further technical details

.NET SDK (reflecting any global.json): Version: 6.0.101 Commit: ef49f6213a

Runtime Environment: OS Name: ubuntu OS Version: 20.04 OS Platform: Linux RID: ubuntu.20.04-x64 Base Path: /usr/share/dotnet/sdk/6.0.101/

Host (useful for support): Version: 6.0.1 Commit: 3a25a7f1cc

.NET SDKs installed: 5.0.301 [/usr/share/dotnet/sdk] 5.0.404 [/usr/share/dotnet/sdk] 6.0.101 [/usr/share/dotnet/sdk]

.NET runtimes installed: Microsoft.AspNetCore.All 2.1.30 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.1.30 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.22 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.7 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.13 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.1 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.1.30 [/usr/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.22 [/usr/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.7 [/usr/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.13 [/usr/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.1 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

[CarlSargunar]

Did anyone raise this on the Nuget repository? I’m still seeing this

[msftbot[bot]]

Thanks for creating this issue! We believe this issue is related to NuGet tooling, which is maintained by the NuGet team. Thus, we closed this one and encourage you to raise this issue in the NuGet repository instead. Don’t forget to check out NuGet’s contributing guide before submitting an issue!

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