Tolerable error reporting

bin/mrsk

@@ -1,5 +1,13 @@
 #!/usr/bin/env ruby
 
+# Prevent failures from being reported twice.
+Thread.report_on_exception = false
+
 require "mrsk/cli"
 
-Mrsk::Cli::Main.start(ARGV)
+begin
+  Mrsk::Cli::Main.start(ARGV)
+rescue SSHKit::Runner::ExecuteError => e
+  puts "  \e[31mERROR (#{e.cause.class}): #{e.cause.message}\e[0m"
+  puts e.cause.backtrace if ENV["VERBOSE"]
+end