Increase default memory limits

tests/Gemfile

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 source "https://rubygems.org"
-ruby "2.7.2"
+ruby "2.7.3"
 
 gem "capybara"
 gem "rspec"

tests/Gemfile.lock

@@ -64,7 +64,7 @@ DEPENDENCIES
   webdrivers
 
 RUBY VERSION
-   ruby 2.7.2p137
+   ruby 2.7.3p183
 
 BUNDLED WITH
    2.1.4

tests/spec/features/highlighting_error_output_spec.rb

@@ -10,7 +10,7 @@
 
   scenario "errors are highlighted" do
     within('.output-stderr') do
-      expect(page).to have_css '.error', text: 'wrong number of type arguments'
+      expect(page).to have_css '.error', text: '1 type argument but 2 type arguments were supplied'
       expect(page).to have_css '.error', text: 'aborting due to 2 previous errors'
       expect(page).to have_css '.error', text: /Could not compile `playground`/i
     end

ui/src/sandbox.rs

@@ -447,8 +447,8 @@ fn basic_secure_docker_command() -> Command {
         "--security-opt=no-new-privileges",
         "--workdir", "/playground",
         "--net", "none",
-        "--memory", "256m",
-        "--memory-swap", "320m",
+        "--memory", "512m",
+        "--memory-swap", "640m",
         "--env", format!("PLAYGROUND_TIMEOUT={}", DOCKER_PROCESS_TIMEOUT_SOFT.as_secs()),
     );