[libc++] Update lld version on buildbots to be LLVM-11.

diff --git a/libcxx/utils/docker/debian9/scripts/buildbot/run_buildbot.sh b/libcxx/utils/docker/debian9/scripts/buildbot/run_buildbot.sh
index b458e0e..7448eb2 100755 (executable)
--- a/libcxx/utils/docker/debian9/scripts/buildbot/run_buildbot.sh
+++ b/libcxx/utils/docker/debian9/scripts/buildbot/run_buildbot.sh
@@ -20,9 +20,9 @@ apt-get install sudo -y
 # FIXME(EricWF): Remove this hack. It's only in place to temporarily fix linking libclang_rt from the
 # debian packages.
 # WARNING: If you're not a buildbot, DO NOT RUN!
-apt-get install lld-10 -y
+apt-get install lld-11 -y
 rm /usr/bin/ld
-ln -s /usr/bin/lld-10 /usr/bin/ld
+ln -s /usr/bin/lld-11 /usr/bin/ld
 
 systemctl set-property buildslave.service TasksMax=100000