Unable to install RethinkDB on Ubuntu following the tutorial

Just found out that rethink is shutting down, so I won´t look further into this,

Thank you, I tried this and it still gives me

E: Unable to locate package rethinkdb

same when I try https://rethinkdb.com/docs/install/ubuntu/

even when I try to build it, make gives me an

cc1plus: all warnings being treated as errors
src/build.mk:385: recipe for target 'build/release/obj/rdb_protocol/ql2.pb.o' failed
make[1]: *** [build/release/obj/rdb_protocol/ql2.pb.o] Error 1
Makefile:52: recipe for target 'make' failed
make: *** [make] Error 2

may be I did something wrong in general, sicne I am new to Ubuntu / Linux but I did follow all the setup tutorials step by step

Ubuntu 16.10 x64 by the way. May be the wrong version but rethinkDB (>= 12.04). iis mentioned.

@ch1652b85071bf32e2dde0e1a9

Once you’ve added the PPA using:

sudo add-apt-repository ppa:rethinkdb/ppa

You’ll need to run:

sudo apt-get update

So that the packages from the new repository are synced. You can then run:

apt-get install rethinkdb