SpineEventEngine · alexander-yevsyukov · Jul 2, 2026 · Jul 2, 2026 · Jul 2, 2026 · Jul 2, 2026
diff --git a/.agents/tasks/logging-jvmtest-triage.md b/.agents/tasks/logging-jvmtest-triage.md
@@ -0,0 +1,69 @@
+# Triage and fix the 25 latent `:logging:jvmTest` failures
+
+## Problem
+
+Enabling the JUnit Platform on the KMP `jvmTest` task (see
+`kmp-jvmtest-junit-platform.md`, branch `claude/angry-hugle-d62cfe`) surfaced
+25 latent test failures in `:logging:jvmTest` (232 run, 207 pass) which
+accumulated while the task silently discovered zero tests.
+
+Reproduce with JDK 17:
+`./gradlew :logging:jvmTest --rerun` (requires the `kmp-module.gradle.kts`
+fix from that branch; a copy is applied in this worktree).
+
+## Triage results
+
+Production fixes (behavior drifted from the Flogger contract during the
+Kotlin migration):
+
+1. `MetadataKey.cast` — returned `null` on type mismatch; now throws
+   `ClassCastException` (Flogger parity; `null` input still passes through).
+2. `checkCannotRepeat` — used `check` (ISE) with an inverted message; now
+   `require` (IAE) per the documented contract of `findValue`/`getSingleValue`.
+3. `MetadataHandler.Builder.addRepeatedHandler` — called `checkCannotRepeat`,
+   the exact opposite of Flogger's `checkArgument(key.canRepeat())`; inverted.
+4. `SimpleProcessor` — lost `Collections.unmodifiableList` in translation
+   (`e.setValue(e.value as List<*>)` is a no-op cast); repeated-value
+   iterators are now wrapped in a read-only `UnmodifiableIterator`.
+5. `LogContext.log {}` — evaluated the message lambda *before*
+   `AbstractLogger.write`, escaping the recursion guard and error handling;
+   evaluation now happens inside `write(data, prepare)`.
+   Also, a `null` message now reaches the backend unmodified
+   (was string-concatenated into `"null"`).
+6. `AbstractLogger` error-report timestamps — used `LocalDateTime.Formats.ISO`
+   (no offset, variable millis); now `yyyy-MM-dd'T'HH:mm:ss.SSSZ` equivalent.
+7. `AbstractLogger.atConfig()` — mapped to `Level.INFO` (copy-paste);
+   now `Level.CONFIG`.
+8. `LogPerBucketingStrategy.byClass()/byClassName()` — used
+   `key::class`/`qualifiedName!!` (identity not guaranteed; NPE for local and
+   anonymous classes); now `key.javaClass`/`key.javaClass.name`.
+9. `ScopedLoggingContext.Builder.run(Runnable)` — missing member (silently
+   shadowed by stdlib `kotlin.run`, which never installs the context); added.
+
+Test fixes (tests carried stale or Java-specific expectations):
+
+- `AbstractLoggerSpec` — case-insensitive match for the recursion message.
+- `LogContextSpec` — `log { null }` expects a `null` literal (rendered as
+  `"null"` by `SimpleMessageFormatter`), not `"<null>"`.
+- `JvmLoggerSpec` — invocation counters moved out of lazy message lambdas
+  (lambdas only run for statements which log); the log-site method name is
+  the sanitized synthetic lambda method.
+- `LogLevelMapSpec` — `String::class` registers as `kotlin.String`
+  (consistent with `LoggingFactory` logger names), not `java.lang.String`.
+- `LoggingCompatibilityTest` — Kotlin requires `*` spread to pass an array
+  as `vararg`.
+- `AnyExtsJvmSpec` — expect Spine's backtick diagnostic style.
+
+## Status
+
+- [x] All 25 failures reproduced and triaged
+- [x] Production fixes applied
+- [x] Test fixes applied
+- [x] `:logging:jvmTest` green (232/232)
+- [x] Full `./gradlew build --continue` green (all modules, detekt, Kover)
+
+## Notes
+
+- The `update-copyright` PostToolUse hook strips `The Flogger Authors; `
+  from headers; restored in all touched files (keep watching this).
+- Delete this file on merge to master.
diff --git a/docs/dependencies/dependencies.md b/docs/dependencies/dependencies.md
@@ -1,6 +1,6 @@
 
 
-# Dependencies of `io.spine:spine-logging-context-tests:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-context-tests:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : org.jetbrains. **Name** : annotations. **Version** : 26.1.0.
@@ -441,14 +441,14 @@
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:26 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-fixtures:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-fixtures:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 ## Compile, tests, and tooling
@@ -1240,14 +1240,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:53 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:27 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-grpc-context:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-grpc-context:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -2094,14 +2094,14 @@ This report was generated on **Thu Jul 02 12:40:53 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:26 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-jul-backend:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-jul-backend:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -2932,14 +2932,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:26 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-jvm-default-platform:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-jvm-default-platform:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -3786,14 +3786,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:26 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-jvm-jul-backend-grpc-context:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-jvm-jul-backend-grpc-context:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -4692,14 +4692,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:26 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-jvm-jul-backend-std-context:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-jvm-jul-backend-std-context:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -5590,14 +5590,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:27 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-jvm-log4j2-backend-std-context:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-jvm-log4j2-backend-std-context:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -6508,14 +6508,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:27 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-jvm-slf4j-jdk14-backend-std-context:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-jvm-slf4j-jdk14-backend-std-context:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -7414,14 +7414,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:26 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-jvm-slf4j-reload4j-backend-std-context:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-jvm-slf4j-reload4j-backend-std-context:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -8324,14 +8324,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:27 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-log4j2-backend:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-log4j2-backend:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -9206,14 +9206,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:26 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 ## Compile, tests, and tooling
@@ -10013,14 +10013,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:53 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:27 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:logging-testlib:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine.tools:logging-testlib:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 ## Compile, tests, and tooling
@@ -10832,14 +10832,14 @@ This report was generated on **Thu Jul 02 12:40:53 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:27 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-otel-backend:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-otel-backend:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 ## Compile, tests, and tooling
@@ -11739,14 +11739,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:53 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:27 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-otel-backend-bootstrap:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-otel-backend-bootstrap:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.auto.service. **Name** : auto-service-annotations. **Version** : 1.1.1.
@@ -13157,14 +13157,14 @@ This report was generated on **Thu Jul 02 12:40:53 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:27 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-probe-backend:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-probe-backend:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.auto.service. **Name** : auto-service-annotations. **Version** : 1.1.1.
@@ -14015,14 +14015,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:26 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-smoke-test:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-smoke-test:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.fasterxml.jackson. **Name** : jackson-bom. **Version** : 2.22.0.
@@ -14921,14 +14921,14 @@ This report was generated on **Thu Jul 02 12:40:52 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:53 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:27 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-logging-std-context:2.0.0-SNAPSHOT.422`
+# Dependencies of `io.spine:spine-logging-std-context:2.0.0-SNAPSHOT.423`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -15759,6 +15759,6 @@ This report was generated on **Thu Jul 02 12:40:53 WEST 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Thu Jul 02 12:40:53 WEST 2026** using 
+This report was generated on **Thu Jul 02 19:17:27 WEST 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
diff --git a/docs/dependencies/pom.xml b/docs/dependencies/pom.xml
@@ -10,7 +10,7 @@ all modules and does not describe the project structure per-subproject.
  -->
 <groupId>io.spine</groupId>
 <artifactId>logging</artifactId>
-<version>2.0.0-SNAPSHOT.422</version>
+<version>2.0.0-SNAPSHOT.423</version>
 
 <inceptionYear>2015</inceptionYear>