>>> Unpacking source...
>>> Unpacking nant-0.85-src.tar.gz to /var/tmp/portage/dev-dotnet/nant-0.85/work
tar: A lone zero block at 22932
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/dev-dotnet/nant-0.85/work/nant-0.85 ...
mkdir -p bootstrap
cp -R lib/ bootstrap/lib
# Mono loads log4net before privatebinpath is set-up, so we need this in the same directory
# as NAnt.exe
cp lib/log4net.dll bootstrap
cp src/NAnt.Console/App.config bootstrap/NAnt.exe.config
mcs -target:exe -define:MONO -out:bootstrap/NAnt.exe -r:bootstrap/log4net.dll \
		-recurse:src/NAnt.Console/*.cs src/CommonAssemblyInfo.cs
resgen  src/NAnt.Core/Resources/Strings.resx bootstrap/NAnt.Core.Resources.Strings.resources
Read in 200 resources from 'src/NAnt.Core/Resources/Strings.resx'
Writing resource file...  Done.
mcs -target:library -warn:0 -define:MONO -out:bootstrap/NAnt.Core.dll -debug \
		-resource:bootstrap/NAnt.Core.Resources.Strings.resources -r:lib/log4net.dll \
		-r:System.Web.dll -recurse:src/NAnt.Core/*.cs src/CommonAssemblyInfo.cs
resgen  src/NAnt.DotNet/Resources/Strings.resx bootstrap/NAnt.DotNet.Resources.Strings.resources
Read in 75 resources from 'src/NAnt.DotNet/Resources/Strings.resx'
Writing resource file...  Done.
mcs -target:library -warn:0 -define:MONO -out:bootstrap/NAnt.DotNetTasks.dll \
		-r:./bootstrap/NAnt.Core.dll -r:bootstrap/lib/mono/1.0/NDoc.Core.dll \
		-recurse:src/NAnt.DotNet/*.cs -resource:bootstrap/NAnt.DotNet.Resources.Strings.resources \
		src/CommonAssemblyInfo.cs
mcs -target:library -warn:0 -define:MONO -out:bootstrap/NAnt.CompressionTasks.dll \
		-r:./bootstrap/NAnt.Core.dll -r:bootstrap/lib/ICSharpCode.SharpZipLib.dll \
		-recurse:src/NAnt.Compression/*.cs src/CommonAssemblyInfo.cs
mono bootstrap/NAnt.exe -t:mono-2.0 -f:NAnt.build build
log4net:ERROR LogLog: Exception while reading ConfigurationSettings. Check your .config file is well formed XML.
System.Configuration.ConfigurationErrorsException: Unrecognized configuration section <mscorlib> () (/etc/mono/2.0/machine.config line 211)
  at System.Configuration.ConfigInfo.ThrowException (System.String text, System.Xml.XmlTextReader reader) [0x00000] 
  at System.Configuration.SectionGroupInfo.ReadContent (System.Xml.XmlTextReader reader, System.Configuration.Configuration config, Boolean overrideAllowed, Boolean root) [0x00000] 
  at System.Configuration.SectionGroupInfo.ReadRootData (System.Xml.XmlTextReader reader, System.Configuration.Configuration config, Boolean overrideAllowed) [0x00000] 
  at System.Configuration.Configuration.ReadConfigFile (System.Xml.XmlTextReader reader, System.String fileName) [0x00000] 
  at System.Configuration.Configuration.Load () [0x00000] 
  at System.Configuration.Configuration.Init (IConfigSystem system, System.String configPath, System.Configuration.Configuration parent) [0x00000] 
  at System.Configuration.Configuration..ctor (System.Configuration.InternalConfigurationSystem system, System.String locationSubPath) [0x00000] 
  at System.Configuration.Configuration..ctor (System.Configuration.InternalConfigurationSystem system, System.String locationSubPath) [0x00000] 
  at System.Configuration.Configuration..ctor (System.Configuration.InternalConfigurationSystem system, System.String locationSubPath) [0x00000] 
  at System.Configuration.Configuration..ctor (System.Configuration.InternalConfigurationSystem system, System.String locationSubPath) [0x00000] 
  at System.Configuration.InternalConfigurationFactory.Create (System.Type typeConfigHost, System.Object[] hostInitConfigurationParams) [0x00000] 
  at System.Configuration.ConfigurationManager.OpenExeConfigurationInternal (ConfigurationUserLevel userLevel, System.Reflection.Assembly calling_assembly, System.String exePath) [0x00000] 
  at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection (System.String configKey) [0x00000] 
  at System.Configuration.ConfigurationManager.GetSection (System.String sectionName) [0x00000] 
  at System.Configuration.ConfigurationSettings.get_AppSettings () [0x00000] 
  at log4net.Util.LogLog..cctor () [0x00000] 

Unhandled Exception: System.Configuration.ConfigurationErrorsException: Unrecognized configuration section <mscorlib> () (/etc/mono/2.0/machine.config line 211)
  at System.Configuration.ConfigInfo.ThrowException (System.String text, System.Xml.XmlTextReader reader) [0x00000] 
  at System.Configuration.SectionGroupInfo.ReadContent (System.Xml.XmlTextReader reader, System.Configuration.Configuration config, Boolean overrideAllowed, Boolean root) [0x00000] 
  at System.Configuration.SectionGroupInfo.ReadRootData (System.Xml.XmlTextReader reader, System.Configuration.Configuration config, Boolean overrideAllowed) [0x00000] 
  at System.Configuration.Configuration.ReadConfigFile (System.Xml.XmlTextReader reader, System.String fileName) [0x00000] 
  at System.Configuration.Configuration.Load () [0x00000] 
  at System.Configuration.Configuration.Init (IConfigSystem system, System.String configPath, System.Configuration.Configuration parent) [0x00000] 
  at System.Configuration.Configuration..ctor (System.Configuration.InternalConfigurationSystem system, System.String locationSubPath) [0x00000] 
  at System.Configuration.Configuration..ctor (System.Configuration.InternalConfigurationSystem system, System.String locationSubPath) [0x00000] 
  at System.Configuration.Configuration..ctor (System.Configuration.InternalConfigurationSystem system, System.String locationSubPath) [0x00000] 
  at System.Configuration.Configuration..ctor (System.Configuration.InternalConfigurationSystem system, System.String locationSubPath) [0x00000] 
  at System.Configuration.InternalConfigurationFactory.Create (System.Type typeConfigHost, System.Object[] hostInitConfigurationParams) [0x00000] 
  at System.Configuration.ConfigurationManager.OpenExeConfigurationInternal (ConfigurationUserLevel userLevel, System.Reflection.Assembly calling_assembly, System.String exePath) [0x00000] 
  at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection (System.String configKey) [0x00000] 
  at System.Configuration.ConfigurationManager.GetSection (System.String sectionName) [0x00000] 
  at System.Configuration.ConfigurationSettings.get_AppSettings () [0x00000] 
  at NAnt.Console.ConsoleStub.Main (System.String[] args) [0x00000] 
make: *** [build-nant] Error 1

!!! ERROR: dev-dotnet/nant-0.85 failed.
Call stack:
  ebuild.sh, line 1614:   Called dyn_compile
  ebuild.sh, line 971:   Called qa_call 'src_compile'
  environment, line 3037:   Called src_compile
  nant-0.85.ebuild, line 42:   Called die

!!! (no error message)
!!! If you need support, post the topmost build error, and the call stack if relevant.
!!! A complete build log is located at '/var/tmp/portage/dev-dotnet/nant-0.85/temp/build.log'.