Rebootstrap on 0.12.8

[lihaoyi]

Pulls in com-lihaoyi/os-lib#359 from upstream to fix a problem with leaked processes causing hangs

[lihaoyi]

Seems like the problem is this stderr pumper thread refusing to exit

"/Users/lihaoyi/Library/Caches/Coursier/arc/https/cdn.azul.com/zulu/bin/zulu17.54.21-ca-jdk17.0.13-macosx_aarch64.tar.gz/zulu17.54.21-ca-jdk17.0.13-macosx_aarch64/zulu-17.jdk/Contents/Home/bin/java -DMILL_SCALA_2_13_VERSION=2.13.15 -DMILL_SCALA_2_12_VERSION=2.12.20 -DTEST_SCALA_2_13_VERSION=2.13.15 -DTEST_SCALA_2_13_VERSION_FOR_SCALANATIVE_4_2=2.13.8 -DTEST_SCALA_2_12_VERSION=2.12.6 -DTEST_SCALA_3_2_VERSION=3.2.0 -DTEST_SCALA_3_3_VERSION=3.3.1 -DTEST_SCALAJS_VERSION=1.18.1 -DTEST_SCALANATIVE_0_5_VERSION=0.5.6 -DTEST_UTEST_VERSION=0.8.5 -DTEST_SCALATEST_VERSION=3.2.19 -DTEST_TEST_INTERFACE_VERSION=1.0 -DTEST_ZIOTEST_VERSION=2.1.14 -DTEST_ZINC_VERSION=1.10.7 -DTEST_KOTLIN_VERSION=2.0.21 -Djna.nosys=true -cp /Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.15/scala-library-2.13.15.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/mill-moduledefs_2.13/0.11.2/mill-moduledefs_2.13-0.11.2.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/utest_2.13/0.8.5/utest_2.13-0.8.5.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/sourcecode_2.13/0.4.2/sourcecode_2.13-0.4.2.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-compiler/2.13.15/scala-compiler-2.13.15.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/github/alexarchambault/windows-ansi/windows-ansi/0.0.6/windows-ansi-0.0.6.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/interface/1.0.27/interface-1.0.27.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/mainargs_2.13/0.7.6/mainargs_2.13-0.7.6.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/requests_2.13/0.9.0/requests_2.13-0.9.0.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/ch/qos/logback/logback-classic/1.5.16/logback-classic-1.5.16.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/jgrapht/jgrapht-core/1.4.0/jgrapht-core-1.4.0.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/guru/nidi/graphviz-java-min-deps/0.18.1/graphviz-java-min-deps-0.18.1.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-sbt/test-interface/1.0/test-interface-1.0.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/portable-scala/portable-scala-reflect_2.13/1.1.3/portable-scala-reflect_2.13-1.1.3.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-reflect/2.13.15/scala-reflect-2.13.15.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/coursier_2.13/2.1.24/coursier_2.13-2.1.24.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/coursier-jvm_2.13/2.1.24/coursier-jvm_2.13-2.1.24.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/jline/jline/3.28.0/jline-3.28.0.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scalameta/scalafmt-dynamic_2.13/3.8.5/scalafmt-dynamic_2.13-3.8.5.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/modules/scala-xml_2.13/2.3.0/scala-xml_2.13-2.3.0.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/ow2/asm/asm-tree/9.7.1/asm-tree-9.7.1.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/os-lib_2.13/0.11.4-M6/os-lib_2.13-0.11.4-M6.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/pprint_2.13/0.9.0/pprint_2.13-0.9.0.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/github/java-diff-utils/java-diff-utils/4.12/java-diff-utils-4.12.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/net/java/dev/jna/jna/5.16.0/jna-5.16.0.jar:/Users/lihaoyi/.ivy2/local/org.fusesource.jansi/jansi/2.4.1/jars/jansi.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/slf4j/slf4j-api/2.0.16/slf4j-api-2.0.16.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_2.13/2.12.0/scala-collection-compat_2.13-2.12.0.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/geny_2.13/1.1.1/geny_2.13-1.1.1.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/ch/qos/logback/logback-core/1.5.16/logback-core-1.5.16.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/jheaps/jheaps/0.11/jheaps-0.11.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/guru/nidi/graphviz-java/0.18.1/graphviz-java-0.18.1.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/net/java/dev/jna/jna-platform/5.16.0/jna-platform-5.16.0.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/eed3si9n/jarjarabrams/jarjar-abrams-core_2.13/1.14.0/jarjar-abrams-core_2.13-1.14.0.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/scalaparse_2.13/3.1.1/scalaparse_2.13-3.1.1.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/upickle_2.13/3.3.1/upickle_2.13-3.3.1.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/fansi_2.13/0.5.0/fansi_2.13-0.5.0.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/dependency_2.13/0.3.2/dependency_2.13-0.3.2.jar:/Users/lihaoyi/Libra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s/lihaoyi/Github/mill/testrunner/entrypoint/resources:/Users/lihaoyi/Github/mill/out/testrunner/entrypoint/compile.dest/classes:/Users/lihaoyi/Github/mill/testrunner/compile-resources:/Users/lihaoyi/Github/mill/testrunner/resources:/Users/lihaoyi/Github/mill/out/testrunner/compile.dest/classes:/Users/lihaoyi/Github/mill/scalalib/api/compile-resources:/Users/lihaoyi/Github/mill/scalalib/api/resources:/Users/lihaoyi/Github/mill/out/scalalib/api/buildInfoResources.dest:/Users/lihaoyi/Github/mill/out/scalalib/api/compile.dest/classes:/Users/lihaoyi/Github/mill/scalalib/compile-resources:/Users/lihaoyi/Github/mill/scalalib/resources:/Users/lihaoyi/Github/mill/out/scalalib/compile.dest/classes:/Users/lihaoyi/Github/mill/runner/compile-resources:/Users/lihaoyi/Github/mill/runner/resources:/Users/lihaoyi/Github/mill/out/runner/compile.dest/classes:/Users/lihaoyi/Github/mill/integration/invalidation/selective-execution/compile-resources:/Users/lihaoyi/Github/mill/integration/invalidation/selective-execution/resources:/Users/lihaoyi/Github/mill/out/integration/invalidation/selective-execution/compile.dest/classes:/Users/lihaoyi/Github/mill/out/integration/invalidation/selective-execution/runClasspath.dest:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-testrunner-entrypoint/0.12.8-1-46e216/jars/mill-testrunner-entrypoint.jar:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-sbt/test-interface/1.0/test-interface-1.0.jar mill.testrunner.entrypoint.TestRunnerMain file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-scalalib_2.13/0.12.8-1-46e216/jars/mill-scalalib_2.13.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scalameta/scalafmt-dynamic_2.13/3.8.5/scalafmt-dynamic_2.13-3.8.5.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/modules/scala-xml_2.13/2.3.0/scala-xml_2.13-2.3.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.16/scala-library-2.13.16.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/mill-moduledefs_2.13/0.11.2/mill-moduledefs_2.13-0.11.2.jar,file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-main_2.13/0.12.8-1-46e216/jars/mill-main_2.13.jar,file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-scalalib-api_2.13/0.12.8-1-46e216/jars/mill-scalalib-api_2.13.jar,file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-testrunner_2.13/0.12.8-1-46e216/jars/mill-testrunner_2.13.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scalameta/scalafmt-interfaces/3.8.5/scalafmt-interfaces-3.8.5.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scalameta/scalafmt-sysops_2.13/3.8.5/scalafmt-sysops_2.13-3.8.5.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/interface/1.0.27/interface-1.0.27.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/typesafe/config/1.4.3/config-1.4.3.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/sourcecode_2.13/0.4.2/sourcecode_2.13-0.4.2.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-compiler/2.13.15/scala-compiler-2.13.15.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/github/alexarchambault/windows-ansi/windows-ansi/0.0.6/windows-ansi-0.0.6.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/mainargs_2.13/0.7.6/mainargs_2.13-0.7.6.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/requests_2.13/0.9.0/requests_2.13-0.9.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/ch/qos/logback/logback-classic/1.5.16/logback-classic-1.5.16.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/jgrapht/jgrapht-core/1.4.0/jgrapht-core-1.4.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/guru/nidi/graphviz-java-min-deps/0.18.1/graphviz-java-min-deps-0.18.1.jar,file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-main-eval_2.13/0.12.8-1-46e216/jars/mill-main-eval_2.13.jar,file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-main-resolve_2.13/0.12.8-1-46e216/jars/mill-main-resolve_2.13.jar,file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-main-client/0.12.8-1-46e216/jars/mill-main-client.jar,file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-main-api_2.13/0.12.8-1-46e216/jars/mill-main-api_2.13.jar,file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-main-util_2.13/0.12.8-1-46e216/jars/mill-main-util_2.13.jar,file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-testrunner-entrypoint/0.12.8-1-46e216/jars/mill-testrunner-entrypoint.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/modules/scala-parallel-collections_2.13/1.1.0/scala-parallel-collections_2.13-1.1.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/slf4j/slf4j-api/2.0.16/slf4j-api-2.0.16.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-reflect/2.13.15/scala-reflect-2.13.15.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/github/java-diff-utils/java-diff-utils/4.12/java-diff-utils-4.12.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/jline/jline/3.28.0/jline-3.28.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/net/java/dev/jna/jna/5.16.0/jna-5.16.0.jar,file:/Users/lihaoyi/.ivy2/local/org.fusesource.jansi/jansi/2.4.1/jars/jansi.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_2.13/2.12.0/scala-collection-compat_2.13-2.12.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/geny_2.13/1.1.1/geny_2.13-1.1.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/ch/qos/logback/logback-core/1.5.16/logback-core-1.5.16.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/jheaps/jheaps/0.11/jheaps-0.11.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/guru/nidi/graphviz-java/0.18.1/graphviz-java-0.18.1.jar,file:/Users/lihaoyi/.ivy2/local/com.lihaoyi/mill-main-define_2.13/0.12.8-1-46e216/jars/mill-main-define_2.13.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/os-lib_2.13/0.11.4-M6/os-lib_2.13-0.11.4-M6.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/upickle_2.13/3.3.1/upickle_2.13-3.3.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/pprint_2.13/0.9.0/pprint_2.13-0.9.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/fansi_2.13/0.5.0/fansi_2.13-0.5.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-sbt/test-interface/1.0/test-interface-1.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/coursier_2.13/2.1.24/coursier_2.13-2.1.24.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/coursier-jvm_2.13/2.1.24/coursier-jvm_2.13-2.1.24.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/guru/nidi/com/eclipsesource/j2v8/j2v8_macosx_x86_64/4.6.0/j2v8_macosx_x86_64-4.6.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/google/code/findbugs/jsr305/3.0.2/jsr305-3.0.2.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/slf4j/jcl-over-slf4j/1.7.30/jcl-over-slf4j-1.7.30.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/slf4j/jul-to-slf4j/1.7.30/jul-to-slf4j-1.7.30.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/net/java/dev/jna/jna-platform/5.16.0/jna-platform-5.16.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/eed3si9n/jarjarabrams/jarjar-abrams-core_2.13/1.14.0/jarjar-abrams-core_2.13-1.14.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/scalaparse_2.13/3.1.1/scalaparse_2.13-3.1.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/ujson_2.13/3.3.1/ujson_2.13-3.3.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/upack_2.13/3.3.1/upack_2.13-3.3.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/upickle-implicits_2.13/3.3.1/upickle-implicits_2.13-3.3.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/dependency_2.13/0.3.2/dependency_2.13-0.3.2.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/github/plokhotnyuk/jsoniter-scala/jsoniter-scala-core_2.13/2.13.5.2/jsoniter-scala-core_2.13-2.13.5.2.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/coursier-core_2.13/2.1.24/coursier-core_2.13-2.1.24.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/coursier-cache_2.13/2.1.24/coursier-cache_2.13-2.1.24.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/coursier-proxy-setup/2.1.24/coursier-proxy-setup-2.1.24.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/coursier-env_2.13/2.1.24/coursier-env_2.13-2.1.24.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/eed3si9n/jarjar/jarjar/1.14.0/jarjar-1.14.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/fastparse_2.13/3.1.1/fastparse_2.13-3.1.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/upickle-core_2.13/3.3.1/upickle-core_2.13-3.3.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/github/alexarchambault/concurrent-reference-hash-map/1.1.0/concurrent-reference-hash-map-1.1.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/coursier-util_2.13/2.1.24/coursier-util_2.13-2.1.24.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/github/alexarchambault/is-terminal/0.1.1/is-terminal-0.1.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/jniutils/windows-jni-utils/0.3.3/windows-jni-utils-0.3.3.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/codehaus/plexus/plexus-archiver/4.10.0/plexus-archiver-4.10.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/codehaus/plexus/plexus-container-default/2.1.1/plexus-container-default-2.1.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/virtuslab/scala-cli/config_2.13/1.1.3/config_2.13-1.1.3.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/get-coursier/cache-util/2.1.24/cache-util-2.1.24.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/ow2/asm/asm/9.6/asm-9.6.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/ow2/asm/asm-commons/9.6/asm-commons-9.6.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/apache/commons/commons-lang3/3.14.0/commons-lang3-3.14.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/javax/inject/javax.inject/1/javax.inject-1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/codehaus/plexus/plexus-utils/4.0.1/plexus-utils-4.0.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/codehaus/plexus/plexus-io/3.5.0/plexus-io-3.5.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/commons-io/commons-io/2.16.1/commons-io-2.16.1.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/apache/commons/commons-compress/1.26.2/commons-compress-1.26.2.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/airlift/aircompressor/0.27/aircompressor-0.27.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/tukaani/xz/1.9/xz-1.9.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/github/luben/zstd-jni/1.5.6-3/zstd-jni-1.5.6-3.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/codehaus/plexus/plexus-classworlds/2.6.0/plexus-classworlds-2.6.0.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/apache/xbean/xbean-reflect/3.7/xbean-reflect-3.7.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/virtuslab/scala-cli/specification-level_2.13/1.1.3/specification-level_2.13-1.1.3.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/ow2/asm/asm-tree/9.6/asm-tree-9.6.jar,file:/Users/lihaoyi/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/commons-codec/commons-codec/1.17.0/commons-codec-1.17.0.jar /Users/lihaoyi/Github/mill/out/integration/invalidation/selective-execution/local/fork/test.dest/testargs stderr thread" #41 prio=5 os_prio=31 cpu=1.45ms elapsed=22.00s tid=0x000000014c808200 nid=0xb403 runnable  [0x0000000173b8a000]
   java.lang.Thread.State: RUNNABLE
	at java.io.FileInputStream.readBytes([email protected]/Native Method)
	at java.io.FileInputStream.read([email protected]/FileInputStream.java:276)
	at java.io.BufferedInputStream.fill([email protected]/BufferedInputStream.java:244)
	at java.io.BufferedInputStream.read1([email protected]/BufferedInputStream.java:284)
	at java.io.BufferedInputStream.read([email protected]/BufferedInputStream.java:343)
	- locked <0x0000000617e08c70> (a java.lang.ProcessImpl$ProcessPipeInputStream)
	at java.io.FilterInputStream.read([email protected]/FilterInputStream.java:106)
	at mill.main.client.InputPumper.run(InputPumper.java:48)
	at java.lang.Thread.run([email protected]/Thread.java:840)

[lihaoyi]

The issue appears to be the Mill subprocess spawned in the test in

mill/integration/invalidation/selective-execution/src/SelectiveExecutionTests.scala

Lines 199 to 206 in f83a950

	Future {
	eval(
	("--watch", "{foo.fooCommand,bar.barCommand}"),
	check = true,
	stdout = os.ProcessOutput.Readlines(line => output0 = output0 :+ line),
	stderr = os.Inherit
	)
	}

In client-server mode, when the test is done, the process is terminated by the IntegrationTester#close code in

mill/testkit/src/mill/testkit/IntegrationTester.scala

Lines 146 to 161 in f83a950

	override def close(): Unit = {
	if (clientServerMode) {
	// try to stop the server
	os.call(
	cmd = (millExecutable, "--no-build-lock", "shutdown"),
	cwd = workspacePath,
	stdin = os.Inherit,
	stdout = os.Inherit,
	stderr = os.Inherit,
	env = millTestSuiteEnv,
	check = false
	)
	}
	removeServerIdFile()
	}

However in fork mode, there isn't any mechanism to terminate the Mill subprocess, which continues running in that Future indefinitely.

This probably only become an issue in #4456 due to subtle changes about how the Jvm.* APIs deal with leaked subprocesses; probably before we were just leaking, and now we are instead hanging waiting for the leaked subprocess to complete. Somehow, now the TestRunnerMain subprocess is exiting, but the child MillMain process that it spawned remains hanging around, and this causes the parent MillMain process to also hang around. But still haven't figured out the exact cause

[lihaoyi]

One bug is the bincompat forwarders upstream in OS-Lib have the wrong default set for destroyOnExit. This should be fixed separately, but even passing in destroyOnExit = true explicitly in IntegrationTester#eval doesn't seem to help

https://github.com/com-lihaoyi/os-lib/blob/3aea8be1b75b564a06dfdd1ab9bab5acb4a06c77/os/src/ProcessOps.scala#L74

[lihaoyi]

Upstream fix for OS-Lib com-lihaoyi/os-lib#357

[lihaoyi]

Seems the underlying problem was bugs in destroyOnExit, which when fixed in com-lihaoyi/os-lib#359 seems to make things pass