Library import errors in IntelliJ IDEA project?

Question

Java

At work, there was a task to write a plugin for Jenkins - I opened the official manual ( https://wiki.jenkins-ci.org/display/JENKINS/Plugin... ), made a plugin skeleton using it, and some black magic began - IntelliJ IDEA does not see imported libraries. At the same time, if you make an mvn package, then the project will be compiled into an *.hpi file, which can be added as a plugin to Jenkins.
Import errors in IntelliJ IDEA 2016.3.1 Community Edition ( clip2net.com/clip/m484522/cc3e0-clip-218kb.png?noc... )

File settings {user.home}/.m2/settings.xml

<settings>
  <localRepository>C:/Users/QA/.m2/repository/</localRepository>
  <pluginGroups>
    <pluginGroup>org.jenkins-ci.tools</pluginGroup>
  </pluginGroups>

  <profiles>
    <!-- Give access to Jenkins plugins -->
    <profile>
      <id>jenkins</id>
      <activation>
        <activeByDefault>false</activeByDefault> <!-- change this to false, if you don't like to have it on per default -->
      </activation>
      <repositories>
        <repository>
          <id>repo.jenkins-ci.org</id>
          <url>https://repo.jenkins-ci.org/public/</url>
        </repository>
      </repositories>
      <pluginRepositories>
        <pluginRepository>
          <id>repo.jenkins-ci.org</id>
          <url>https://repo.jenkins-ci.org/public/</url>
        </pluginRepository>
      </pluginRepositories>
    </profile>
  </profiles>
  <mirrors>
    <mirror>
      <id>repo.jenkins-ci.org</id>
      <url>https://repo.jenkins-ci.org/public/</url>
      <mirrorOf>m.g.o-public</mirrorOf>
    </mirror>
  </mirrors>
</settings>

pom.xml settings in plugin project

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>org.jenkins-ci.plugins</groupId>
    <artifactId>plugin</artifactId>
    <version>2.11</version>
    <relativePath/>
  </parent>
  <groupId>biz.clickky</groupId>
  <artifactId>jenkins</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>hpi</packaging>

  <properties>
    <!-- Baseline Jenkins version you use to build the plugin. Users must have this version or newer to run. -->
    <jenkins.version>1.625.3</jenkins.version>
    <!-- Java Level to use. Java 7 required when using core >= 1.612 -->
    <java.level>7</java.level>
    <!-- Jenkins Test Harness version you use to test the plugin. -->
    <!-- For Jenkins version >= 1.580.1 use JTH 2.x or higher. -->
    <jenkins-test-harness.version>2.13</jenkins-test-harness.version>
    <!-- Other properties you may want to use:
         ~ hpi-plugin.version: The HPI Maven Plugin version used by the plugin..
         ~ stapler-plugin.version: The Stapler Maven plugin version required by the plugin.
    -->
  </properties>

  <name>Testrail2Jenkins</name>
  <description>Testrail2Jenkins</description>
  <url>https://wiki.jenkins-ci.org/display/JENKINS/TODO+Plugin</url>

  <!-- The default licence for Jenkins OSS Plugins is MIT. Substitute for the applicable one if needed. -->

  <!--<licenses>-->
    <!--<license>-->
      <!--<name>MIT License</name>-->
      <!--<url>http://opensource.org/licenses/MIT</url>-->
    <!--</license>-->
  <!--</licenses>-->

  <!-- If you want this to appear on the wiki page:
  <developers>
    <developer>
      <id>bhacker</id>
      <name>Bob Q. Hacker</name>
      <email>[email protected]</email>
    </developer>
  </developers>
  -->
  <!-- Assuming you want to host on @jenkinsci:
  <scm>
    <connection>scm:git:git://github.com/jenkinsci/${project.artifactId}-plugin.git</connection>
    <developerConnection>scm:git:[email protected]:jenkinsci/${project.artifactId}-plugin.git</developerConnection>
    <url>http://github.com/jenkinsci/${project.artifactId}-plugin</url>
  </scm>
   -->
  <repositories>
    <repository>
      <id>repo.jenkins-ci.org</id>
      <url>https://repo.jenkins-ci.org/public/</url>
    </repository>
  </repositories>

  <pluginRepositories>
    <pluginRepository>
      <id>repo.jenkins-ci.org</id>
      <url>https://repo.jenkins-ci.org/public/</url>
    </pluginRepository>
  </pluginRepositories>

  <dependencies>
    <dependency>
      <groupId>org.jenkins-ci.plugins</groupId>
      <artifactId>credentials</artifactId>
      <version>1.9.4</version>
    </dependency>
  </dependencies>

</project>

Does anyone have any ideas how to overcome this?
PS At the same time, in the next IntelliJ IDEA window, I work with autotest projects and everything is fine with import.