ruby - Mailcatcher Error: ~~> ERROR: Something's using port 1025. Are you already running MailCatcher? -

i have installed gem mailcatcher. , when want run mailcatcher have error message:

$ mailcatcher /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::base /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of base here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::exception_all /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of exception_all here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::exception_nan /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of exception_nan here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::exception_infinity /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of exception_infinity here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::exception_underflow /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of exception_underflow here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::exception_overflow /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of exception_overflow here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::exception_zerodivide /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of exception_zerodivide here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::round_mode /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of round_mode here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::round_up /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of round_up here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::round_down /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of round_down here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::round_half_up /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of round_half_up here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::round_half_down /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of round_half_down here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::round_ceiling /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of round_ceiling here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::round_floor /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of round_floor here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::round_half_even /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of round_half_even here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::sign_nan /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of sign_nan here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::sign_positive_zero /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of sign_positive_zero here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::sign_negative_zero /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of sign_negative_zero here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::sign_positive_finite /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of sign_positive_finite here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::sign_negative_finite /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of sign_negative_finite here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::sign_positive_infinite /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of sign_positive_infinite here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::sign_negative_infinite /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of sign_negative_infinite here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::infinity /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of infinity here /users/romenigld/.rvm/gems/ruby-2.2.3@global/extensions/x86_64-darwin-14/2.2.0-static/bigdecimal-1.2.7/bigdecimal.bundle: warning: initialized constant bigdecimal::nan /users/romenigld/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:121: warning: previous definition of nan here starting mailcatcher ~~> error: something's using port 1025. running mailcatcher? 

then when try use http://localhost:1080/ shows me app mailcatcher. need application don't show anymore error?

something seems running on port. can instance of mailcatcher, or other process.

on *nix systems can use following command search process occupying particular port:

lsof -i :port 

for example:

lsof -i :1025 

the result contain pid (process id). can use kill offending process.

kill -9 some_pid 

example:

kill -9 32487