[www-scripts] Sphinx Doc Update: ERROR

[www-data via www-scripts]

UPDATING llvm SOURCES
Updating '.':
D    lib/Target/Hexagon/HexagonDepDecoders.h
A    lib/Target/Hexagon/HexagonDepDecoders.inc
U    lib/MC/WasmObjectWriter.cpp
U    lib/Target/RISCV/RISCVISelLowering.h
U    lib/Target/RISCV/RISCVISelLowering.cpp
U    lib/Target/RISCV/RISCVInstrInfoF.td
U    lib/Target/Hexagon/Disassembler/HexagonDisassembler.cpp
U    CMakeLists.txt
A    test/MC/WebAssembly/null-output.s
U    test/CodeGen/X86/slow-incdec.ll
U    test/CodeGen/RISCV/float-arith.ll
A    test/CodeGen/RISCV/rv64f-float-convert.ll
U    test/CodeGen/RISCV/float-bitmanip-dagcombines.ll
U    test/CodeGen/RISCV/float-select-fcmp.ll
A    test/CodeGen/RISCV/rv32i-rv64i-float-double.ll
U    test/CodeGen/RISCV/float-fcmp.ll
U    test/CodeGen/RISCV/float-br-fcmp.ll
U    test/CodeGen/RISCV/float-mem.ll
U    test/CodeGen/RISCV/float-convert.ll
U    test/CodeGen/RISCV/float-imm.ll
U    cmake/modules/CheckCompilerVersion.cmake
U    include/llvm/MC/MCAsmInfo.h
U    docs/CMake.rst
U    docs/GettingStarted.rst
Updated to revision 352811.
CMake Error at cmake/modules/CheckCompilerVersion.cmake:40 (message):
  Host GCC version should be at least 5.1 because LLVM will soon use new C++
  features which your toolchain version doesn't support.  Your version is
  4.8.4.  You can temporarily opt out using
  LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN, but very soon your toolchain won't be
  supported.
Call Stack (most recent call first):
  cmake/modules/CheckCompilerVersion.cmake:45 (check_compiler_version)
  cmake/config-ix.cmake:13 (include)
  CMakeLists.txt:590 (include)


-- Configuring incomplete, errors occurred!
See also "/opt/sphinx-docs/build/llvm/CMakeFiles/CMakeOutput.log".
See also "/opt/sphinx-docs/build/llvm/CMakeFiles/CMakeError.log".
make[1]: *** [cmake_check_build_system] Error 1
make: *** [docs/CMakeFiles/docs-llvm-html.dir/rule] Error 2