brew install -vd cmake (version 2.8.6, with manually changed md5)

gistfile1.txt

$ brew install -vd cmake
==> Downloading http://www.cmake.org/files/v2.8/cmake-2.8.6.tar.gz
File already downloaded in /Users/gert/Library/Caches/Homebrew
==> ./bootstrap --prefix=/usr/local/Cellar/cmake/2.8.6 --system-libs --no-system-libarchive --datadir=/share/cmake --docdir=/share/doc/cmake --mandir=/share/man
./bootstrap --prefix=/usr/local/Cellar/cmake/2.8.6 --system-libs --no-system-libarchive --datadir=/share/cmake --docdir=/share/doc/cmake --mandir=/share/man
Error: #<BuildError: Failed executing: ./bootstrap --prefix=/usr/local/Cellar/cmake/2.8.6 --system-libs --no-system-libarchive --datadir=/share/cmake --docdir=/share/doc/cmake --mandir=/share/man>
/usr/local/Library/Homebrew/formula.rb:541:in `system'
/usr/local/Library/Formula/cmake.rb:29:in `install'
/usr/local/Library/Homebrew/build.rb:74:in `install'
/usr/local/Library/Homebrew/formula.rb:273:in `brew'
/usr/local/Library/Homebrew/formula.rb:637:in `stage'
/usr/local/Library/Homebrew/formula.rb:561:in `mktemp'
/usr/local/Library/Homebrew/formula.rb:635:in `stage'
/usr/local/Library/Homebrew/formula.rb:268:in `brew'
/usr/local/Library/Homebrew/build.rb:53:in `install'
/usr/local/Library/Homebrew/build.rb:27
/usr/local/Library/Formula/cmake.rb:10
==> Rescuing build...
When you exit this shell Homebrew will attempt to finalise the installation.
If nothing is installed or the shell exits with a non-zero error code,
Homebrew will abort. The installation prefix is:
/usr/local/Cellar/cmake/2.8.6