Sample:

{
    "require": {
        "php": "^7.1"
    },

    "require-dev": {
        "phpunit/phpunit": "^7.4"
    }
}

<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

require_once __DIR__ . '/../vendor/autoload.php';

class JustATest extends TestCase
{
    public static function setUpBeforeClass(): void
    {
        throw new \RuntimeException('Something\'s not quite right!');
    }

    public function testSomething(): void
    {
        $this->fail('This cannot work!');
    }
}

When I run this test in phpstorm i will just get "Empty test suite." with the success icon without any failed test. Full output:

PHPUnit 7.4.3 by Sebastian Bergmann and contributors.

Empty test suite.


Time: 64 ms, Memory: 2.00MB


ERRORS!
Tests: 1, Assertions: 0, Errors: 1.

Process finished with exit code 2

There seems to be an critical error in the teamcity logger (src/Util/Log/TeamCity.php). You added some "if (!$test instanceof TestCase) {return;}" in the last version and this also seem to trigger this error (or rather don't trigger an error). When I change the addError method to the following everything works like expected:

public function addError(Test $test, \Throwable $t, float $time): void
    {
        if (!$test instanceof TestCase && !$test instanceof TestSuite) {
            return;
        }

I'm not sure whether this is everything to fully fix this bug. Propably the other added if-statements also have to be changed like this.