diff --git a/ktor-client/ktor-client-cio/jvm/test/io/ktor/client/engine/cio/ConnectErrorsTest.kt b/ktor-client/ktor-client-cio/jvm/test/io/ktor/client/engine/cio/ConnectErrorsTest.kt
index a401f5703e7..33911cbe0e4 100644
--- a/ktor-client/ktor-client-cio/jvm/test/io/ktor/client/engine/cio/ConnectErrorsTest.kt
+++ b/ktor-client/ktor-client-cio/jvm/test/io/ktor/client/engine/cio/ConnectErrorsTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.engine.cio
@@ -18,7 +18,6 @@ import io.ktor.server.engine.*
 import io.ktor.server.netty.*
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
-import io.ktor.utils.io.*
 import kotlinx.coroutines.*
 import kotlinx.coroutines.debug.junit5.*
 import org.junit.jupiter.api.extension.*
@@ -102,7 +101,8 @@ class ConnectErrorsTest {
                             }
                             client.getInputStream().readBytes()
                         }
-                    } catch (_: Exception) { }
+                    } catch (_: Exception) {
+                    }
                 }
                 assertEquals("OK", client.get("http://localhost:${serverSocket.localPort}/").body())
                 thread.join()
diff --git a/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketTest.kt b/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketTest.kt
index fa39d86ba80..2e15d5f5843 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketTest.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.tests.plugins
@@ -34,7 +34,8 @@ class WebSocketTest {
                 path = "/websocket"
             ) {
             }
-        } catch (_: Throwable) {}
+        } catch (_: Throwable) {
+        }
 
         assertEquals(443, port)
     }
diff --git a/ktor-server/ktor-server-cio/jvmAndPosix/src/io/ktor/server/cio/backend/ServerPipeline.kt b/ktor-server/ktor-server-cio/jvmAndPosix/src/io/ktor/server/cio/backend/ServerPipeline.kt
index 678d9dabd11..7ab47ceed65 100644
--- a/ktor-server/ktor-server-cio/jvmAndPosix/src/io/ktor/server/cio/backend/ServerPipeline.kt
+++ b/ktor-server/ktor-server-cio/jvmAndPosix/src/io/ktor/server/cio/backend/ServerPipeline.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.cio.backend
@@ -12,11 +12,10 @@ import io.ktor.util.cio.*
 import io.ktor.utils.io.*
 import io.ktor.utils.io.charsets.*
 import io.ktor.utils.io.core.*
-import io.ktor.utils.io.errors.*
 import kotlinx.coroutines.*
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.channels.*
-import kotlinx.io.IOException
+import kotlinx.io.*
 import kotlin.time.*
 
 /**
@@ -64,7 +63,8 @@ public fun CoroutineScope.startServerConnectionPipeline(
                 throw io
             } catch (cancelled: CancellationException) {
                 throw cancelled
-            } catch (parseFailed: Throwable) { // try to write 400 Bad Request
+            } catch (parseFailed: Throwable) {
+                // try to write 400 Bad Request
                 respondBadRequest(actorChannel)
                 break // end pipeline loop
             }
@@ -176,7 +176,8 @@ public fun CoroutineScope.startServerConnectionPipeline(
 
             if (isLastHttpRequest(version, connectionOptions)) break
         }
-    } catch (cause: IOException) { // already handled
+    } catch (cause: IOException) {
+        // already handled
         coroutineContext.cancel()
     } finally {
         actorChannel.close()
diff --git a/ktor-server/ktor-server-test-base/jsAndWasmShared/src/io/ktor/server/test/base/EngineTestBase.jsAndWasmShared.kt b/ktor-server/ktor-server-test-base/jsAndWasmShared/src/io/ktor/server/test/base/EngineTestBase.jsAndWasmShared.kt
index e3f1e9140ad..c688ed37db0 100644
--- a/ktor-server/ktor-server-test-base/jsAndWasmShared/src/io/ktor/server/test/base/EngineTestBase.jsAndWasmShared.kt
+++ b/ktor-server/ktor-server-test-base/jsAndWasmShared/src/io/ktor/server/test/base/EngineTestBase.jsAndWasmShared.kt
@@ -110,7 +110,7 @@ actual constructor(
             starting.join()
             @OptIn(ExperimentalCoroutinesApi::class)
             starting.getCompletionExceptionOrNull()?.let { listOf(it) } ?: emptyList()
-        } catch (t: Throwable) { // InterruptedException?
+        } catch (t: Throwable) {
             starting.cancel()
             listOf(t)
         }
diff --git a/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/EngineTestBaseJvm.kt b/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/EngineTestBaseJvm.kt
index 9d14a47bbd4..86aef1f6bca 100644
--- a/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/EngineTestBaseJvm.kt
+++ b/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/EngineTestBaseJvm.kt
@@ -216,7 +216,7 @@ actual abstract class EngineTestBase<
             starting.join()
             @OptIn(ExperimentalCoroutinesApi::class)
             starting.getCompletionExceptionOrNull()?.let { listOf(it) } ?: emptyList()
-        } catch (t: Throwable) { // InterruptedException?
+        } catch (t: Throwable) {
             starting.cancel()
             listOf(t)
         }
diff --git a/ktor-server/ktor-server-test-base/posix/src/io/ktor/server/test/base/EngineTestBaseNix.kt b/ktor-server/ktor-server-test-base/posix/src/io/ktor/server/test/base/EngineTestBaseNix.kt
index a2323d849fa..6e8967fe3ce 100644
--- a/ktor-server/ktor-server-test-base/posix/src/io/ktor/server/test/base/EngineTestBaseNix.kt
+++ b/ktor-server/ktor-server-test-base/posix/src/io/ktor/server/test/base/EngineTestBaseNix.kt
@@ -121,7 +121,7 @@ actual constructor(
             starting.join()
             @OptIn(ExperimentalCoroutinesApi::class)
             starting.getCompletionExceptionOrNull()?.let { listOf(it) } ?: emptyList()
-        } catch (t: Throwable) { // InterruptedException?
+        } catch (t: Throwable) {
             starting.cancel()
             listOf(t)
         }