Link to the report: https://teamcity.jetbrains.com/viewLog.html?buildId=3844938&tab=Inspection&buildTypeId=Checkstyle_IdeaInspectionsPullRequest#

Mostly Grammar and http links, but other violations should be fixed.

General

• Redundant suppression (Errors) (12)
• Syntax error (Errors) (2)

Java/Abstraction issues

• Private method only used from inner class (Errors) (1)

Java/Code maturity

• Commented out code (2)
• Deprecated member is still used (2)

Java/Code style issues

• 'if' statement can be replaced with conditional or boolean expression (Errors) (4)

Java/Data flow

• Scope of variable is too broad (Errors) (2)
• Java/Java language level migration aids/Java 9
• Null check can be replaced with method call (4)

Java/JUnit

• JUnit test method without any assertions (Errors) (8)

Java/Memory

• Static collection (73)

Java/Performance

• Call to 'set.removeAll(list)' may work slowly (2)

Java/Probable bugs

• Result of method call ignored (1)

Java/Threading issues

• 'synchronized' method (1)

Java/Verbose or redundant code constructs

• Redundant String operation (2)
• Redundant usage of unmodifiable collection wrappers (2)

JavaScript and TypeScript/Potentially undesirable code constructs

• Anonymous function (Errors) (7)

Proofreading

• Grammar (379)

RegExp

• Duplicate character in character class (2)

Security

• Link with unencrypted protocol (64)

YAML

• Validation by JSON Schema (10)