According to https://confluence.jetbrains.com/display/TCD10/Build+Script+Interaction+with+TeamCity#BuildScriptInteractionwithTeamCity-Escapedvalues , lines formatted for TeamCity should have symbols escaped with | symbol instead of the usual \ symbol.

To reproduce:

1. Open the project, attached by user via command line by using this command:
Unity.exe -batchmode -projectPath %path_to_project% -runEditorTests -editorTestsResultFile "tests.xml" -editorTestsVerboseLog teamcity
2. Open Editor.log and find lines in this format:
##teamcity[testStarted name='MethodName(argument)']
3. Observe, how some symbols are not escaped correctly

Expected: symbols in a line formatted for TeamCity are escaped using | symbol
Actual: the usual \ symbol is used to escape symbols in lines formatted for TeamCity

Reproduced in 5.3.8f1, 5.4.5p1, 5.5.2p2, 5.5.3p2
Could not reproduce in 5.6 and 2017.1, because the versions use new Editor Tests Runner and editorTestsVerboseLog teamcity argument was not reimplemented there