svn checkout compiler-rt failed

I failed to checkout compiler-rt, what happened?

$ svn co http://llvm.org/svn/llvm-project/compiler-rt/trunk compiler-rt
A compiler-rt/LICENSE.TXT
A compiler-rt/unittests
A compiler-rt/unittests/lit.common.unit.configured.in
A compiler-rt/unittests/lit.common.unit.cfg
A compiler-rt/unittests/CMakeLists.txt
A compiler-rt/SDKs
A compiler-rt/SDKs/linux
A compiler-rt/SDKs/linux/usr
A compiler-rt/SDKs/linux/usr/include
A compiler-rt/SDKs/linux/usr/include/sys
A compiler-rt/SDKs/darwin
A compiler-rt/SDKs/darwin/usr
A compiler-rt/SDKs/darwin/usr/include
A compiler-rt/SDKs/darwin/usr/include/sys
A compiler-rt/.gitignore
A compiler-rt/lib
A compiler-rt/lib/BlocksRuntime
A compiler-rt/lib/BlocksRuntime/Block.h
A compiler-rt/lib/BlocksRuntime/runtime.c
svn: E175002: REPORT request on '/svn/llvm-project/!svn/vcc/default' failed

  - mudongliang