Update dependencies from https://github.com/dotnet/arcade build 20200827.5 (#1463)

[master] Update dependencies from dotnet/arcade
- Updates:
  - Microsoft.DotNet.Arcade.Sdk: from 5.0.0-beta.20419.21 to 5.0.0-beta.20427.5
  - Microsoft.DotNet.ApiCompat: from 5.0.0-beta.20419.21 to 5.0.0-beta.20427.5

11 files changed, 178 insertions, 135 deletions

diff --git a/eng/common/build.ps1 b/eng/common/build.ps1
index 67ee6d28d..94a91c081 100644
--- a/eng/common/build.ps1
+++ b/eng/common/build.ps1
@@ -23,6 +23,8 @@ Param(
   [switch][Alias('nobl')]$excludeCIBinarylog,
   [switch] $ci,
   [switch] $prepareMachine,
+  [string] $runtimeSourceFeed = '',
+  [string] $runtimeSourceFeedKey = '',
   [switch] $help,
   [Parameter(ValueFromRemainingArguments=$true)][String[]]$properties
 )
diff --git a/eng/common/build.sh b/eng/common/build.sh
index 6d7c5a1f6..252b63604 100755
--- a/eng/common/build.sh
+++ b/eng/common/build.sh
@@ -76,9 +76,10 @@ projects=''
 configuration='Debug'
 prepare_machine=false
 verbosity='minimal'
+runtime_source_feed=''
+runtime_source_feed_key=''
 
 properties=''
-
 while [[ $# > 0 ]]; do
   opt="$(echo "${1/#--/-}" | awk '{print tolower($0)}')"
   case "$opt" in
@@ -151,6 +152,14 @@ while [[ $# > 0 ]]; do
       node_reuse=$2
       shift
       ;;
+    -runtimesourcefeed)
+      runtime_source_feed=$2
+      shift
+      ;;
+     -runtimesourcefeedkey)
+      runtime_source_feed_key=$2
+      shift
+      ;;
     *)
       properties="$properties $1"
       ;;
diff --git a/eng/common/cross/armel/tizen-build-rootfs.sh b/eng/common/cross/armel/tizen-build-rootfs.sh
index 25a0efa0b..9a4438af6 100755
--- a/eng/common/cross/armel/tizen-build-rootfs.sh
+++ b/eng/common/cross/armel/tizen-build-rootfs.sh
@@ -30,8 +30,6 @@ rm -rf $TIZEN_TMP_DIR
 
 # Configure Tizen rootfs
 echo ">>Start configuring Tizen rootfs"
-rm ./usr/lib/libunwind.so
-ln -s libunwind.so.8 ./usr/lib/libunwind.so
 ln -sfn asm-arm ./usr/include/asm
 patch -p1 < $__TIZEN_CROSSDIR/tizen.patch
 echo "<<Finish configuring Tizen rootfs"
diff --git a/eng/common/cross/armel/tizen/tizen.patch b/eng/common/cross/armel/tizen/tizen.patch
index d223427c9..ca7c7c1ff 100644
--- a/eng/common/cross/armel/tizen/tizen.patch
+++ b/eng/common/cross/armel/tizen/tizen.patch
@@ -7,12 +7,3 @@ diff -u -r a/usr/lib/libc.so b/usr/lib/libc.so
  OUTPUT_FORMAT(elf32-littlearm)
 -GROUP ( /lib/libc.so.6 /usr/lib/libc_nonshared.a  AS_NEEDED ( /lib/ld-linux.so.3 ) )
 +GROUP ( libc.so.6 libc_nonshared.a  AS_NEEDED ( ld-linux.so.3 ) )
-diff -u -r a/usr/lib/libpthread.so b/usr/lib/libpthread.so
---- a/usr/lib/libpthread.so	2016-12-30 23:00:19.408951841 +0900
-+++ b/usr/lib/libpthread.so	2016-12-30 23:00:39.068951801 +0900
-@@ -2,4 +2,4 @@
-    Use the shared library, but some functions are only in
-    the static library, so try that secondarily.  */
- OUTPUT_FORMAT(elf32-littlearm)
--GROUP ( /lib/libpthread.so.0 /usr/lib/libpthread_nonshared.a )
-+GROUP ( libpthread.so.0 libpthread_nonshared.a )
diff --git a/eng/common/performance/blazor_perf.proj b/eng/common/performance/blazor_perf.proj
new file mode 100644
index 000000000..3b25359c4
--- /dev/null
+++ b/eng/common/performance/blazor_perf.proj
@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.DotNet.Helix.Sdk" DefaultTargets="Test">
+  <PropertyGroup Condition="'$(AGENT_OS)' != 'Windows_NT'">
+    <Python>python3</Python>
+    <HelixPreCommands>$(HelixPreCommands);chmod +x $HELIX_WORKITEM_PAYLOAD/SOD/SizeOnDisk</HelixPreCommands>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <HelixCorrelationPayload Include="$(CorrelationPayloadDirectory)">
+      <PayloadDirectory>%(Identity)</PayloadDirectory>
+    </HelixCorrelationPayload>
+  </ItemGroup>
+
+  <PropertyGroup Condition="'$(AGENT_OS)' == 'Windows_NT'">
+    <ScenarioDirectory>%HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\</ScenarioDirectory>
+    <BlazorDirectory>$(ScenarioDirectory)blazor\</BlazorDirectory>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(AGENT_OS)' != 'Windows_NT'">
+    <ScenarioDirectory>$HELIX_CORRELATION_PAYLOAD/performance/src/scenarios/</ScenarioDirectory>
+    <BlazorDirectory>$(ScenarioDirectory)blazor/</BlazorDirectory>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <HelixWorkItem Include="SOD - New Blazor Template - Publish">
+        <PayloadDirectory>$(WorkItemDirectory)</PayloadDirectory>
+        <PreCommands>cd $(BlazorDirectory);$(Python) pre.py publish --msbuild %27/p:_TrimmerDumpDependencies=true%27 --msbuild-static AdditionalMonoLinkerOptions=%27&quot;%24(AdditionalMonoLinkerOptions) --dump-dependencies&quot;%27 --binlog %27./traces/blazor_publish.binlog%27</PreCommands>
+        <Command>$(Python) test.py sod --scenario-name &quot;%(Identity)&quot;</Command>
+        <PostCommands>$(Python) post.py</PostCommands>
+    </HelixWorkItem>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/eng/common/performance/crossgen_perf.proj b/eng/common/performance/crossgen_perf.proj
index 3c8c33d70..426492038 100644
--- a/eng/common/performance/crossgen_perf.proj
+++ b/eng/common/performance/crossgen_perf.proj
@@ -1,80 +1,68 @@
 <Project Sdk="Microsoft.DotNet.Helix.Sdk" DefaultTargets="Test">
 
+  <ItemGroup>
+    <HelixCorrelationPayload Include="$(CorrelationPayloadDirectory)">
+      <PayloadDirectory>%(Identity)</PayloadDirectory>
+    </HelixCorrelationPayload>
+  </ItemGroup>
+
+  <!-- 
+    Crossgen and Crossgen2 Scenario WorkItems 
+  -->
   <PropertyGroup Condition="'$(AGENT_OS)' == 'Windows_NT'">
     <Python>py -3</Python>
-    <HelixPreCommands>$(HelixPreCommands);call %HELIX_CORRELATION_PAYLOAD%\performance\tools\machine-setup.cmd;set PYTHONPATH=%HELIX_WORKITEM_PAYLOAD%\scripts%3B%HELIX_WORKITEM_PAYLOAD%</HelixPreCommands>
-    <ArtifactsDirectory>%HELIX_CORRELATION_PAYLOAD%\artifacts\BenchmarkDotNet.Artifacts</ArtifactsDirectory>
-    <BaseDirectory>$HELIX_CORRELATION_PAYLOAD</BaseDirectory>
-    <PerformanceDirectory>$(BaseDirectory)/performance</PerformanceDirectory>
+    <HelixPreCommands>$(HelixPreCommands)</HelixPreCommands>
+    <CoreRoot>%HELIX_CORRELATION_PAYLOAD%\Core_Root</CoreRoot>
+    <ScenarioDirectory>%HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\</ScenarioDirectory>
+    <CrossgenDirectory>$(ScenarioDirectory)crossgen\</CrossgenDirectory>
+    <Crossgen2Directory>$(ScenarioDirectory)crossgen2\</Crossgen2Directory>
   </PropertyGroup>
-
- <PropertyGroup Condition="'$(AGENT_OS)' != 'Windows_NT'">
-    <WorkItemCommand>$(PerformanceDirectory)/scripts/benchmarks_ci.py --csproj $(PerformanceDirectory)/$(TargetCsproj)</WorkItemCommand>
-    <CliArguments>--dotnet-versions $DOTNET_VERSION --cli-source-info args --cli-branch $PERFLAB_BRANCH --cli-commit-sha $PERFLAB_HASH --cli-repository https://github.com/$PERFLAB_REPO --cli-source-timestamp $PERFLAB_BUILDTIMESTAMP</CliArguments>
+  <PropertyGroup Condition="'$(AGENT_OS)' != 'Windows_NT'">
     <Python>python3</Python>
-    <CoreRun>$(BaseDirectory)/Core_Root/corerun</CoreRun>
-    <HelixPreCommands>$(HelixPreCommands);chmod +x $(PerformanceDirectory)/tools/machine-setup.sh;. $(PerformanceDirectory)/tools/machine-setup.sh</HelixPreCommands>
-    <ArtifactsDirectory>$(BaseDirectory)/artifacts/BenchmarkDotNet.Artifacts</ArtifactsDirectory>
-    <BaselineArtifactsDirectory>$(BaseDirectory)/artifacts/BenchmarkDotNet.Artifacts_Baseline</BaselineArtifactsDirectory>
-    <ResultsComparer>$(PerformanceDirectory)/src/tools/ResultsComparer/ResultsComparer.csproj</ResultsComparer>
-    <DotnetExe>$(PerformanceDirectory)/tools/dotnet/$(Architecture)/dotnet</DotnetExe>
-    <Percent>%25</Percent>
-    <XMLResults>$HELIX_WORKITEM_ROOT/testResults.xml</XMLResults>
-  </PropertyGroup> 
+    <HelixPreCommands>$(HelixPreCommands);chmod +x $HELIX_WORKITEM_PAYLOAD/startup/Startup;chmod +x $HELIX_WORKITEM_PAYLOAD/startup/perfcollect;sudo apt update</HelixPreCommands>
+    <CoreRoot>$HELIX_CORRELATION_PAYLOAD/Core_Root</CoreRoot>
+    <ScenarioDirectory>$HELIX_CORRELATION_PAYLOAD/performance/src/scenarios/</ScenarioDirectory>
+    <CrossgenDirectory>$(ScenarioDirectory)crossgen/</CrossgenDirectory>
+    <Crossgen2Directory>$(ScenarioDirectory)crossgen2/</Crossgen2Directory>
+  </PropertyGroup>
 
   <ItemGroup>
-    <HelixCorrelationPayload Include="$(CorrelationPayloadDirectory)">
-      <PayloadDirectory>%(Identity)</PayloadDirectory>
-    </HelixCorrelationPayload>
+    <SingleAssembly Include="System.Private.Xml.dll"/>
+    <SingleAssembly Include="System.Linq.Expressions.dll"/>
+    <SingleAssembly Include="Microsoft.CodeAnalysis.VisualBasic.dll"/>
+    <SingleAssembly Include="Microsoft.CodeAnalysis.CSharp.dll"/>
+    <SingleAssembly Include="System.Private.CoreLib.dll"/>
+  </ItemGroup>
+  <ItemGroup>
+    <Composite Include="framework-r2r.dll.rsp"/>
   </ItemGroup>
 
-  <ItemGroup Condition="'$(AGENT_OS)' == 'Windows_NT'">
-    <HelixWorkItem Include="Crossgen System.Private.Xml.dll">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen\test.py crossgen --test-name System.Private.Xml.dll --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>
-    </HelixWorkItem>
-    <HelixWorkItem Include="Crossgen System.Linq.Expressions.dll">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen\test.py crossgen --test-name System.Linq.Expressions.dll --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>
-    </HelixWorkItem>
-    <HelixWorkItem Include="Crossgen Microsoft.CodeAnalysis.VisualBasic.dll">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen\test.py crossgen --test-name Microsoft.CodeAnalysis.VisualBasic.dll --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>
-    </HelixWorkItem>
-    <HelixWorkItem Include="Crossgen Microsoft.CodeAnalysis.CSharp.dll">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen\test.py crossgen --test-name Microsoft.CodeAnalysis.CSharp.dll --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>
-    </HelixWorkItem>
-    <HelixWorkItem Include="Crossgen System.Private.CoreLib.dll">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen\test.py crossgen --test-name System.Private.CoreLib.dll --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>
-    </HelixWorkItem>
+  <ItemGroup>
+    <CrossgenWorkItem Include="@(SingleAssembly)">
+      <PayloadDirectory>$(WorkItemDirectory)</PayloadDirectory>
+      <Command>$(Python) $(CrossgenDirectory)test.py crossgen --core-root $(CoreRoot) --test-name %(Identity)</Command>
+    </CrossgenWorkItem>
   </ItemGroup>
 
-  <ItemGroup Condition="'$(AGENT_OS)' == 'Windows_NT' and '$(Architecture)' == 'x64'">
-    <HelixWorkItem Include="Crossgen2 System.Private.Xml.dll">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen2\test.py crossgen2 --single System.Private.Xml.dll --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>
-    </HelixWorkItem>
-    <HelixWorkItem Include="Crossgen2 System.Linq.Expressions.dll">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen2\test.py crossgen2 --single System.Linq.Expressions.dll --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>
-    </HelixWorkItem>
-    <HelixWorkItem Include="Crossgen2 Microsoft.CodeAnalysis.VisualBasic.dll">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen2\test.py crossgen2 --single Microsoft.CodeAnalysis.VisualBasic.dll --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>
-    </HelixWorkItem>     
-    <HelixWorkItem Include="Crossgen2 Microsoft.CodeAnalysis.CSharp.dll">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen2\test.py crossgen2 --single Microsoft.CodeAnalysis.CSharp.dll --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>
+  <ItemGroup> 
+    <Crossgen2WorkItem Include="@(SingleAssembly)">
+      <PayloadDirectory>$(WorkItemDirectory)</PayloadDirectory>
+      <Command>$(Python) $(Crossgen2Directory)test.py crossgen2 --core-root $(CoreRoot) --single %(Identity)</Command>
+    </Crossgen2WorkItem>
+  </ItemGroup>
+
+  <ItemGroup>
+    <!-- Enable crossgen tests on Windows x64 and Windows x86 -->
+    <HelixWorkItem Include="@(CrossgenWorkItem -> 'Crossgen %(Identity)')" Condition="'$(AGENT_OS)' == 'Windows_NT'">
+      <Timeout>4:00</Timeout>
     </HelixWorkItem>
-    <HelixWorkItem Include="Crossgen2 System.Private.CoreLib.dll">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen2\test.py crossgen2 --single System.Private.CoreLib.dll --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>
+    <!-- Enable crossgen2 tests on Windows x64 and Linux x64 -->
+    <HelixWorkItem Include="@(Crossgen2WorkItem -> 'Crossgen2 %(Identity)')" Condition="'$(Architecture)' == 'x64'">
+      <Timeout>4:00</Timeout>
     </HelixWorkItem>
-    <HelixWorkItem Include="Crossgen2 Composite Framework R2R">
-      <PayloadDirectory>$(WorkItemDirectory)\ScenarioCorrelation</PayloadDirectory>	
-      <Command>$(Python) %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen2\test.py crossgen2 --composite %HELIX_CORRELATION_PAYLOAD%\performance\src\scenarios\crossgen2\framework-r2r.dll.rsp --core-root %HELIX_CORRELATION_PAYLOAD%\Core_Root</Command>	
+    <HelixWorkItem Include="Crossgen2 Composite Framework R2R" Condition="'$(Architecture)' == 'x64'">
+      <PayloadDirectory>$(WorkItemDirectory)</PayloadDirectory>	
+      <Command>$(Python) $(Crossgen2Directory)test.py crossgen2 --core-root $(CoreRoot) --composite $(Crossgen2Directory)framework-r2r.dll.rsp</Command>
       <Timeout>1:00</Timeout>  
     </HelixWorkItem>
   </ItemGroup>
diff --git a/eng/common/performance/microbenchmarks.proj b/eng/common/performance/microbenchmarks.proj
index 5c95ef458..94b6efbc9 100644
--- a/eng/common/performance/microbenchmarks.proj
+++ b/eng/common/performance/microbenchmarks.proj
@@ -46,10 +46,10 @@
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(MonoDotnet)' == 'true' and '$(AGENT_OS)' == 'Windows_NT'">
-    <CoreRunArgument>--corerun %HELIX_CORRELATION_PAYLOAD%\dotnet-mono\shared\Microsoft.NETCore.App\5.0.0\corerun.exe</CoreRunArgument>
+    <CoreRunArgument>--corerun %HELIX_CORRELATION_PAYLOAD%\dotnet-mono\shared\Microsoft.NETCore.App\6.0.0\corerun.exe</CoreRunArgument>
   </PropertyGroup>
   <PropertyGroup Condition="'$(MonoDotnet)' == 'true' and '$(AGENT_OS)' != 'Windows_NT'">
-    <CoreRunArgument>--corerun $(BaseDirectory)/dotnet-mono/shared/Microsoft.NETCore.App/5.0.0/corerun</CoreRunArgument>
+    <CoreRunArgument>--corerun $(BaseDirectory)/dotnet-mono/shared/Microsoft.NETCore.App/6.0.0/corerun</CoreRunArgument>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(UseCoreRun)' == 'true'">
diff --git a/eng/common/performance/performance-setup.sh b/eng/common/performance/performance-setup.sh
index 65a9d8fc6..806e56c61 100755
--- a/eng/common/performance/performance-setup.sh
+++ b/eng/common/performance/performance-setup.sh
@@ -26,6 +26,7 @@ use_baseline_core_run=true
 using_mono=false
 wasm_runtime_loc=
 using_wasm=false
+use_latest_dotnet=false
 
 while (($# > 0)); do
   lowerI="$(echo $1 | awk '{print tolower($0)}')"
@@ -115,7 +116,11 @@ while (($# > 0)); do
       configurations=$2
       shift 2
       ;;
-    --help)
+    --latestdotnet)
+      use_latest_dotnet=true
+      shift 1
+      ;;
+    *)
       echo "Common settings:"
       echo "  --corerootdirectory <value>    Directory where Core_Root exists, if running perf testing with --corerun"
       echo "  --architecture <value>         Architecture of the testing being run"
@@ -137,6 +142,7 @@ while (($# > 0)); do
       echo "  --internal                     If the benchmarks are running as an official job."
       echo "  --monodotnet                   Pass the path to the mono dotnet for mono performance testing."
       echo "  --wasm                         Path to the unpacked wasm runtime pack."
+      echo "  --latestdotnet                 --dotnet-versions will not be specified. --dotnet-versions defaults to LKG version in global.json "
       echo ""
       exit 0
       ;;
@@ -194,28 +200,30 @@ if [[ "$internal" == true ]]; then
     fi
 fi
 
-if [[ "$mono_dotnet" != "" ]]; then
+if [[ "$mono_dotnet" != "" ]] && [[ "$monointerpreter" == "false" ]]; then
     configurations="$configurations LLVM=$llvm MonoInterpreter=$monointerpreter MonoAOT=$monoaot"
+    extra_benchmark_dotnet_arguments="$extra_benchmark_dotnet_arguments --category-exclusion-filter NoMono"
 fi
 
 if [[ "$wasm_runtime_loc" != "" ]]; then
-    configurations="CompilationMode=wasm RunKind=micro"
-    extra_benchmark_dotnet_arguments="$extra_benchmark_dotnet_arguments --category-exclusion-filter NoInterpreter NoWASM"
+    configurations="CompilationMode=wasm RunKind=$kind"
+    extra_benchmark_dotnet_arguments="$extra_benchmark_dotnet_arguments --category-exclusion-filter NoInterpreter NoWASM NoMono"
 fi
 
-if [[ "$monointerpreter" == "true" ]]; then
-    extra_benchmark_dotnet_arguments="$extra_benchmark_dotnet_arguments --category-exclusion-filter NoInterpreter"
+if [[ "$mono_dotnet" != "" ]] && [[ "$monointerpreter" == "true" ]]; then
+    extra_benchmark_dotnet_arguments="$extra_benchmark_dotnet_arguments --category-exclusion-filter NoInterpreter NoMono"
 fi
 
 common_setup_arguments="--channel master --queue $queue --build-number $build_number --build-configs $configurations --architecture $architecture"
 setup_arguments="--repository https://github.com/$repository --branch $branch --get-perf-hash --commit-sha $commit_sha $common_setup_arguments"
 
 
-# Get the tools section from the global.json.
-# This grabs the LKG version number of dotnet and passes it to our scripts
-dotnet_version=`cat global.json | python3 -c 'import json,sys;obj=json.load(sys.stdin);print(obj["tools"]["dotnet"])'`
-setup_arguments="--dotnet-versions $dotnet_version $setup_arguments"
-
+if [[ "$use_latest_dotnet" = false ]]; then
+    # Get the tools section from the global.json.
+    # This grabs the LKG version number of dotnet and passes it to our scripts
+    dotnet_version=`cat global.json | python3 -c 'import json,sys;obj=json.load(sys.stdin);print(obj["tools"]["dotnet"])'`
+    setup_arguments="--dotnet-versions $dotnet_version $setup_arguments"
+fi
 
 if [[ "$run_from_perf_repo" = true ]]; then
     payload_directory=
@@ -266,7 +274,7 @@ Write-PipelineSetVariable -name "PerformanceDirectory" -value "$performance_dire
 Write-PipelineSetVariable -name "WorkItemDirectory" -value "$workitem_directory" -is_multi_job_variable false
 Write-PipelineSetVariable -name "Queue" -value "$queue" -is_multi_job_variable false
 Write-PipelineSetVariable -name "SetupArguments" -value "$setup_arguments" -is_multi_job_variable false
-Write-PipelineSetVariable -name "Python" -value "$python3" -is_multi_job_variable false
+Write-PipelineSetVariable -name "Python" -value "python3" -is_multi_job_variable false
 Write-PipelineSetVariable -name "PerfLabArguments" -value "$perflab_arguments" -is_multi_job_variable false
 Write-PipelineSetVariable -name "ExtraBenchmarkDotNetArguments" -value "$extra_benchmark_dotnet_arguments" -is_multi_job_variable false
 Write-PipelineSetVariable -name "BDNCategories" -value "$run_categories" -is_multi_job_variable false
diff --git a/eng/common/templates/post-build/post-build.yml b/eng/common/templates/post-build/post-build.yml
index 030808632..630a99d4d 100644
--- a/eng/common/templates/post-build/post-build.yml
+++ b/eng/common/templates/post-build/post-build.yml
@@ -56,6 +56,7 @@ parameters:
   NetEngServicesProdChannelId: 679
   Net5Preview8ChannelId: 1155
   Net5RC1ChannelId: 1157
+  Net5RC2ChannelId: 1329
   NetCoreSDK313xxChannelId: 759
   NetCoreSDK313xxInternalChannelId: 760
   NetCoreSDK314xxChannelId: 921
@@ -91,7 +92,7 @@ stages:
         inputs:
           filePath: $(Build.SourcesDirectory)/eng/common/post-build/check-channel-consistency.ps1
           arguments: -PromoteToChannels "$(TargetChannels)"
-            -AvailableChannelIds ${{parameters.NetEngLatestChannelId}},${{parameters.NetEngValidationChannelId}},${{parameters.NetDev5ChannelId}},${{parameters.NetDev6ChannelId}},${{parameters.GeneralTestingChannelId}},${{parameters.NETCoreToolingDevChannelId}},${{parameters.NETCoreToolingReleaseChannelId}},${{parameters.NETInternalToolingChannelId}},${{parameters.NETCoreExperimentalChannelId}},${{parameters.NetEngServicesIntChannelId}},${{parameters.NetEngServicesProdChannelId}},${{parameters.Net5Preview8ChannelId}},${{parameters.Net5RC1ChannelId}},${{parameters.NetCoreSDK313xxChannelId}},${{parameters.NetCoreSDK313xxInternalChannelId}},${{parameters.NetCoreSDK314xxChannelId}},${{parameters.NetCoreSDK314xxInternalChannelId}},${{parameters.VS166ChannelId}},${{parameters.VS167ChannelId}},${{parameters.VS168ChannelId}},${{parameters.VSMasterChannelId}}
+            -AvailableChannelIds ${{parameters.NetEngLatestChannelId}},${{parameters.NetEngValidationChannelId}},${{parameters.NetDev5ChannelId}},${{parameters.NetDev6ChannelId}},${{parameters.GeneralTestingChannelId}},${{parameters.NETCoreToolingDevChannelId}},${{parameters.NETCoreToolingReleaseChannelId}},${{parameters.NETInternalToolingChannelId}},${{parameters.NETCoreExperimentalChannelId}},${{parameters.NetEngServicesIntChannelId}},${{parameters.NetEngServicesProdChannelId}},${{parameters.Net5Preview8ChannelId}},${{parameters.Net5RC1ChannelId}},${{parameters.Net5RC2ChannelId}},${{parameters.NetCoreSDK313xxChannelId}},${{parameters.NetCoreSDK313xxInternalChannelId}},${{parameters.NetCoreSDK314xxChannelId}},${{parameters.NetCoreSDK314xxInternalChannelId}},${{parameters.VS166ChannelId}},${{parameters.VS167ChannelId}},${{parameters.VS168ChannelId}},${{parameters.VSMasterChannelId}}
 
   - job:
     displayName: NuGet Validation
@@ -337,6 +338,22 @@ stages:
       dependsOn: ${{ parameters.publishDependsOn }}
       publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
       symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'Net5_RC2_Publish'
+      channelName: '.NET 5 RC 2'
+      akaMSChannelName: 'net5/rc2'
+      channelId: ${{ parameters.Net5RC2ChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-transport/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      BARBuildId: ${{ parameters.BARBuildId }}
+      PromoteToChannelIds: ${{ parameters.PromoteToChannelIds }}
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
       stageName: 'Net_Eng_Latest_Publish'
       channelName: '.NET Eng - Latest'
       akaMSChannelName: 'eng/daily'
diff --git a/eng/common/tools.ps1 b/eng/common/tools.ps1
index 6f8bc4111..c2e575c97 100644
--- a/eng/common/tools.ps1
+++ b/eng/common/tools.ps1
@@ -57,6 +57,11 @@ set-strictmode -version 2.0
 $ErrorActionPreference = 'Stop'
 [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
 
+# If specifies, provides an alternate path for getting .NET Core SDKs and Runtimes. This script will still try public sources first.
+[string]$runtimeSourceFeed = if (Test-Path variable:runtimeSourceFeed) { $runtimeSourceFeed } else { $null }
+# Base-64 encoded SAS token that has permission to storage container described by $runtimeSourceFeed
+[string]$runtimeSourceFeedKey = if (Test-Path variable:runtimeSourceFeedKey) { $runtimeSourceFeedKey } else { $null }
+
 function Create-Directory ([string[]] $path) {
     New-Item -Path $path -Force -ItemType 'Directory' | Out-Null
 }
@@ -223,7 +228,7 @@ function GetDotNetInstallScript([string] $dotnetRoot) {
 }
 
 function InstallDotNetSdk([string] $dotnetRoot, [string] $version, [string] $architecture = '') {
-  InstallDotNet $dotnetRoot $version $architecture
+  InstallDotNet $dotnetRoot $version $architecture '' $false $runtimeSourceFeed $runtimeSourceFeedKey
 }
 
 function InstallDotNet([string] $dotnetRoot,
@@ -248,10 +253,8 @@ function InstallDotNet([string] $dotnetRoot,
     & $installScript @installParameters
   }
   catch {
-    Write-PipelineTelemetryError -Category 'InitializeToolset' -Message "Failed to install dotnet runtime '$runtime' from public location."
-
-    # Only the runtime can be installed from a custom [private] location.
-    if ($runtime -and ($runtimeSourceFeed -or $runtimeSourceFeedKey)) {
+    if ($runtimeSourceFeed -or $runtimeSourceFeedKey) {
+      Write-Host "Failed to install dotnet from public location. Trying from '$runtimeSourceFeed'"
       if ($runtimeSourceFeed) { $installParameters.AzureFeed = $runtimeSourceFeed }
 
       if ($runtimeSourceFeedKey) {
@@ -264,10 +267,11 @@ function InstallDotNet([string] $dotnetRoot,
         & $installScript @installParameters
       }
       catch {
-        Write-PipelineTelemetryError -Category 'InitializeToolset' -Message "Failed to install dotnet runtime '$runtime' from custom location '$runtimeSourceFeed'."
+        Write-PipelineTelemetryError -Category 'InitializeToolset' -Message "Failed to install dotnet from custom location '$runtimeSourceFeed'."
         ExitWithExitCode 1
       }
     } else {
+      Write-PipelineTelemetryError -Category 'InitializeToolset' -Message "Failed to install dotnet from public location."
       ExitWithExitCode 1
     }
   }
@@ -602,11 +606,7 @@ function MSBuild() {
   if ($pipelinesLog) {
     $buildTool = InitializeBuildTool
 
-    # Work around issues with Azure Artifacts credential provider
-    # https://github.com/dotnet/arcade/issues/3932
     if ($ci -and $buildTool.Tool -eq 'dotnet') {
-      dotnet nuget locals http-cache -c
-
       $env:NUGET_PLUGIN_HANDSHAKE_TIMEOUT_IN_SECONDS = 20
       $env:NUGET_PLUGIN_REQUEST_TIMEOUT_IN_SECONDS = 20
       Write-PipelineSetVariable -Name 'NUGET_PLUGIN_HANDSHAKE_TIMEOUT_IN_SECONDS' -Value '20'
diff --git a/eng/common/tools.sh b/eng/common/tools.sh
index e94fce22e..2be5cba30 100755
--- a/eng/common/tools.sh
+++ b/eng/common/tools.sh
@@ -64,6 +64,10 @@ else
   use_global_nuget_cache=${use_global_nuget_cache:-true}
 fi
 
+# Used when restoring .NET SDK from alternative feeds
+runtime_source_feed=${runtime_source_feed:-''}
+runtime_source_feed_key=${runtime_source_feed_key:-''}
+
 # Resolve any symlinks in the given path.
 function ResolvePath {
   local path=$1
@@ -170,11 +174,11 @@ function InitializeDotNetCli {
 function InstallDotNetSdk {
   local root=$1
   local version=$2
-  local architecture=""
-  if [[ $# == 3 ]]; then
+  local architecture="unset"
+  if [[ $# -ge 3 ]]; then
     architecture=$3
   fi
-  InstallDotNet "$root" "$version" $architecture
+  InstallDotNet "$root" "$version" $architecture 'sdk' 'false' $runtime_source_feed $runtime_source_feed_key
 }
 
 function InstallDotNet {
@@ -185,50 +189,50 @@ function InstallDotNet {
   local install_script=$_GetDotNetInstallScript
 
   local archArg=''
-  if [[ -n "${3:-}" ]]; then
+  if [[ -n "${3:-}" ]] && [ "$3" != 'unset' ]; then
     archArg="--architecture $3"
   fi
   local runtimeArg=''
-  if [[ -n "${4:-}" ]]; then
+  if [[ -n "${4:-}" ]] && [ "$4" != 'sdk' ]; then
     runtimeArg="--runtime $4"
   fi
-
   local skipNonVersionedFilesArg=""
-  if [[ "$#" -ge "5" ]]; then
+  if [[ "$#" -ge "5" ]] && [[ "$5" != 'false' ]]; then
     skipNonVersionedFilesArg="--skip-non-versioned-files"
   fi
   bash "$install_script" --version $version --install-dir "$root" $archArg $runtimeArg $skipNonVersionedFilesArg || {
     local exit_code=$?
-    Write-PipelineTelemetryError -category 'InitializeToolset' "Failed to install dotnet SDK from public location (exit code '$exit_code')."
+    echo "Failed to install dotnet SDK from public location (exit code '$exit_code')."
 
-    if [[ -n "$runtimeArg" ]]; then
-      local runtimeSourceFeed=''
-      if [[ -n "${6:-}" ]]; then
-        runtimeSourceFeed="--azure-feed $6"
-      fi
+    local runtimeSourceFeed=''
+    if [[ -n "${6:-}" ]]; then
+      runtimeSourceFeed="--azure-feed $6"
+    fi
 
-      local runtimeSourceFeedKey=''
-      if [[ -n "${7:-}" ]]; then
-        # The 'base64' binary on alpine uses '-d' and doesn't support '--decode'
-        # '-d'. To work around this, do a simple detection and switch the parameter
-        # accordingly.
-        decodeArg="--decode"
-        if base64 --help 2>&1 | grep -q "BusyBox"; then
-            decodeArg="-d"
-        fi
-        decodedFeedKey=`echo $7 | base64 $decodeArg`
-        runtimeSourceFeedKey="--feed-credential $decodedFeedKey"
+    local runtimeSourceFeedKey=''
+    if [[ -n "${7:-}" ]]; then
+      # The 'base64' binary on alpine uses '-d' and doesn't support '--decode'
+      # '-d'. To work around this, do a simple detection and switch the parameter
+      # accordingly.
+      decodeArg="--decode"
+      if base64 --help 2>&1 | grep -q "BusyBox"; then
+          decodeArg="-d"
       fi
+      decodedFeedKey=`echo $7 | base64 $decodeArg`
+      runtimeSourceFeedKey="--feed-credential $decodedFeedKey"
+    fi
 
-      if [[ -n "$runtimeSourceFeed" || -n "$runtimeSourceFeedKey" ]]; then
-        bash "$install_script" --version $version --install-dir "$root" $archArg $runtimeArg $skipNonVersionedFilesArg $runtimeSourceFeed $runtimeSourceFeedKey || {
-          local exit_code=$?
-          Write-PipelineTelemetryError -category 'InitializeToolset' "Failed to install dotnet SDK from custom location '$runtimeSourceFeed' (exit code '$exit_code')."
-          ExitWithExitCode $exit_code
-        }
-      else
+    if [[ -n "$runtimeSourceFeed" || -n "$runtimeSourceFeedKey" ]]; then
+      bash "$install_script" --version $version --install-dir "$root" $archArg $runtimeArg $skipNonVersionedFilesArg $runtimeSourceFeed $runtimeSourceFeedKey || {
+        local exit_code=$?
+        Write-PipelineTelemetryError -category 'InitializeToolset' "Failed to install dotnet SDK from custom location '$runtimeSourceFeed' (exit code '$exit_code')."
         ExitWithExitCode $exit_code
+      }
+    else
+      if [[ $exit_code != 0 ]]; then
+        Write-PipelineTelemetryError -category 'InitializeToolset' "Failed to install dotnet SDK from public location (exit code '$exit_code')."
       fi
+      ExitWithExitCode $exit_code
     fi
   }
 }
@@ -391,11 +395,7 @@ function MSBuild {
     InitializeBuildTool
     InitializeToolset
 
-    # Work around issues with Azure Artifacts credential provider
-    # https://github.com/dotnet/arcade/issues/3932
     if [[ "$ci" == true ]]; then
-      "$_InitializeBuildTool" nuget locals http-cache -c
-
       export NUGET_PLUGIN_HANDSHAKE_TIMEOUT_IN_SECONDS=20
       export NUGET_PLUGIN_REQUEST_TIMEOUT_IN_SECONDS=20
       Write-PipelineSetVariable -name "NUGET_PLUGIN_HANDSHAKE_TIMEOUT_IN_SECONDS" -value "20"