error report

[Allen1205]

kuma:~ kuma$ brew install gsl
Warning: gsl-1.15 already installed
kuma:~ kuma$ brew uninstall gsl
Uninstalling /usr/local/Cellar/gsl/1.15...
kuma:~ kuma$ brew install gsl
==> Downloading https://homebrew.bintray.com/bottles/gsl-1.15.mavericks.bottle.1

curl: (22) The requested URL returned error: 404 Not Found
Error: Failed to download resource "gsl"
Download failed: https://homebrew.bintray.com/bottles/gsl-1.15.mavericks.bottle.1.tar.gz
Warning: Bottle installation failed: building from source.
==> Downloading http://ftpmirror.gnu.org/gsl/gsl-1.15.tar.gz
Already downloaded: /Library/Caches/Homebrew/gsl-1.15.tar.gz
==> ./configure --prefix=/usr/local/Cellar/gsl/1.15
==> make
==> make install