Update Travis to get tests working again

* Remove build of capnproto
* Add creation of "holmes" user on the database to test
* Switch to IP-based connection (the unix socket is in a different place
  on my machine vs travis)

.travis.yml

@@ -1,20 +1,9 @@
 language: rust
 addons:
   postgresql: 9.3
-
-before_install:
-  - yes | sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-  - sudo apt-get update
-install:
-  - sudo apt-get install g++-4.8 gcc-4.8 git
-  - git clone https://github.com/kentonv/capnproto.git
-  - export CC=gcc-4.8
-  - export CXX=g++-4.8
-  - cd capnproto/c++
-  - ./setup-autotools.sh
-  - autoreconf -i
-  - ./configure && make -j5 && sudo make install && cd ../..
-
+before_script:
+  - createuser -U postgres -ld holmes
+  - psql -c "ALTER USER holmes UNENCRYPTED PASSWORD 'holmes'" -U postgres
 after_success:
   - sudo apt-get install libcurl4-openssl-dev libelf-dev libdw-dev
   - wget https://github.com/SimonKagstrom/kcov/archive/master.tar.gz

tests/common.rs

@@ -8,7 +8,7 @@ static DB_NUM : AtomicIsize = ATOMIC_ISIZE_INIT;
 
 pub fn wrap<A>(test : Vec<&Fn(&mut Holmes) -> Result<A>>) {
   let port_num = DB_NUM.fetch_add(1, SeqCst);
-  let db_addr = format!("postgresql://holmes@%2Ftmp/holmes_test{}", port_num);
+  let db_addr = format!("postgresql://holmes:holmes@localhost/holmes_test{}", port_num);
   let db = DB::Postgres(db_addr);
   for action in test.iter() {
     let mut holmes = Holmes::new(db.clone()).unwrap();