Compiling bin/build_tool_runner.dart to kernel file bin/build_tool_runner.dill.
SEVERE: ================================================================================
SEVERE: Cargokit BuildTool failed with error:
SEVERE: --------------------------------------------------------------------------------
SEVERE: ClientException with SocketException: The semaphore timeout period has expired.
SEVERE: (OS Error: The semaphore timeout period has expired.
SEVERE: , errno = 121), address = github.com, port = 1068, uri=https://github.com/superlistapp/super_native_extensions/releases/download/precompiled_3bf6bd97fc3bb54fbbb337876cad5ca3/aarch64-linux-android_libsuper_native_extensions.so.sig
SEVERE: --------------------------------------------------------------------------------
SEVERE: #0 IOClient.send (package:http/src/io_client.dart:119:7)
SEVERE:
SEVERE: #1 BaseClient._sendUnstreamed (package:http/src/base_client.dart:93:32)
SEVERE:
SEVERE: #2 _withClient (package:http/http.dart:166:12)
SEVERE:
SEVERE: #3 ArtifactProvider._get (package:build_tool/src/artifacts_provider.dart:165:16)
SEVERE:
SEVERE: #4 ArtifactProvider._tryDownloadArtifacts (package:build_tool/src/artifacts_provider.dart:192:23)
SEVERE:
SEVERE: #5 ArtifactProvider._getPrecompiledArtifacts (package:build_tool/src/artifacts_provider.dart:133:11)
SEVERE:
SEVERE: #6 ArtifactProvider.getArtifacts (package:build_tool/src/artifacts_provider.dart:54:20)
SEVERE:
SEVERE: #7 BuildGradle.build (package:build_tool/src/build_gradle.dart:32:23)
SEVERE:
SEVERE: #8 BuildGradleCommand.runBuildCommand (package:build_tool/src/build_tool.dart:62:5)
SEVERE:
SEVERE: #9 BuildCommand.run (package:build_tool/src/build_tool.dart:34:5)
SEVERE:
SEVERE: #10 CommandRunner.runCommand (package:args/command_runner.dart:212:13)
SEVERE:
SEVERE: #11 runMain (package:build_tool/src/build_tool.dart:248:5)
SEVERE:
SEVERE: --------------------------------------------------------------------------------
SEVERE: BuildTool arguments: [build-gradle]
SEVERE: ================================================================================
Solution
You can ignore this error and wait the building process to proceed.