commit 41f18edc9f2f0b1ef304ea25f148bd56a6bf3d70
Author: Maarten de Vries <maarten@de-vri.es>
Date:   Thu Jan 31 00:58:29 2019 +0100

    Remove signals from find_package(Boost COMPONENTS ...) (#1580)
    
    The packages use signals2, not signals. Only boost libraries with
    compiled code should be passed to find_package(Boost COMPONENTS ...),
    and the signals2 library has always been header only.
    
    Boost 1.69 has removed the deprecated signals library, so the otherwise
    useless but harmless `signals` component now breaks the build.

diff --git a/test/test_roscpp/CMakeLists.txt b/test/test_roscpp/CMakeLists.txt
index 519767362..01c3d6672 100644
--- a/test/test_roscpp/CMakeLists.txt
+++ b/test/test_roscpp/CMakeLists.txt
@@ -11,7 +11,7 @@ find_package(catkin REQUIRED COMPONENTS
 )
 
 if(CATKIN_ENABLE_TESTING)
-  find_package(Boost REQUIRED COMPONENTS signals filesystem system)
+  find_package(Boost REQUIRED COMPONENTS filesystem system)
 
   include_directories(include ${catkin_INCLUDE_DIRS} ${Boost_INCLUDE_DIRS})