Error in ASP.NET Core benchmarks after updating to use net5.0 tfm #1477
Description
This is the error written to the console when trying to run benchmarks:
// Benchmark: GetHeaderSplitBenchmark.SplitDoubleHeader: Job-IHVIBP(Server=True, Toolchain=.NET Core 5.0, RunStrategy=Throughput)
// *** Execute ***
// Launch: 1 / 1
// Execute: dotnet "47fa91ed-99c2-4976-8c16-a2a9a36949c5.exe" --benchmarkName "Microsoft.AspNetCore.Http.Abstractions.Microbenchmarks.GetHeaderSplitBenchmark.SplitDoubleHeader" --job "Server=True, Toolchain=.NET Core 5.0, RunStrategy=Throughput" --benchmarkId 2 in C:\Development\Source\AspNetCore\artifacts\bin\Microsoft.AspNetCore.Http.Microbenchmarks\Release\net5.0\47fa91ed-99c2-4976-8c16-a2a9a36949c5\bin\Release\net5.0
Error:
An assembly specified in the application dependencies manifest (47fa91ed-99c2-4976-8c16-a2a9a36949c5.deps.json) has already been found but with a different file extension:
package: '47fa91ed-99c2-4976-8c16-a2a9a36949c5', version: '5.0.0-dev'
path: '47fa91ed-99c2-4976-8c16-a2a9a36949c5.dll'
previously found assembly: 'C:\Development\Source\AspNetCore\artifacts\bin\Microsoft.AspNetCore.Http.Microbenchmarks\Release\net5.0\47fa91ed-99c2-4976-8c16-a2a9a36949c5\bin\Release\net5.0\47fa91ed-99c2-4976-8c16-a2a9a36949c5.exe'
ExitCode != 0
// Benchmark Process 83440 has exited with code -2147450740
No more Benchmark runs will be launched as NO measurements were obtained from the previous run!
We believe this issue began when dotnet/aspnetcore was updated to the net5.0 target framework.
App is using BenchmarkDotNet 0.12.1.
How do we fix this error?