Swift Package IndexBuild Information
Failed to build Inspector with Swift 5.9 for Linux.
Build Command
docker run --rm -v "checkouts-4609320-0":/host -w "/host/spi-builder-workspace" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.22.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ipedro/Inspector.git
Reference: 3.3.0
Cloned https://github.com/ipedro/Inspector.git into spi-builder-workspace
SUCCESS checkout https://github.com/ipedro/Inspector.git at 3.3.0
========================================
Build
========================================
Selected platform: linux
Swift version: 5.9
Building package at path: spi-builder-workspace
Running build ...
docker run --rm -v "checkouts-4609320-0":/host -w "/host/spi-builder-workspace" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build 2>&1
Fetching https://github.com/ipedro/Coordinator.git
Fetching https://github.com/ipedro/UIKeyCommandTableView.git
Fetching https://github.com/ipedro/UIKeyboardAnimatable.git
[1/246] Fetching coordinator
[179/362] Fetching coordinator, uikeyboardanimatable
[277/491] Fetching coordinator, uikeyboardanimatable, uikeycommandtableview
Fetched https://github.com/ipedro/Coordinator.git (0.40s)
Fetching https://github.com/ipedro/UIKitOptions.git
Fetched https://github.com/ipedro/UIKeyboardAnimatable.git (0.41s)
Fetched https://github.com/ipedro/UIKeyCommandTableView.git (0.41s)
[1/658] Fetching uikitoptions
Fetched https://github.com/ipedro/UIKitOptions.git (0.37s)
Computing version for https://github.com/ipedro/Coordinator.git
Computed https://github.com/ipedro/Coordinator.git at 2.1.3 (0.49s)
Computing version for https://github.com/ipedro/UIKitOptions.git
Computed https://github.com/ipedro/UIKitOptions.git at 0.3.3 (0.65s)
Computing version for https://github.com/ipedro/UIKeyboardAnimatable.git
Computed https://github.com/ipedro/UIKeyboardAnimatable.git at 1.0.0 (0.33s)
Computing version for https://github.com/ipedro/UIKeyCommandTableView.git
Computed https://github.com/ipedro/UIKeyCommandTableView.git at 0.2.1 (1.11s)
Creating working copy for https://github.com/ipedro/UIKeyCommandTableView.git
Working copy of https://github.com/ipedro/UIKeyCommandTableView.git resolved at 0.2.1
Creating working copy for https://github.com/ipedro/Coordinator.git
Working copy of https://github.com/ipedro/Coordinator.git resolved at 2.1.3
Creating working copy for https://github.com/ipedro/UIKeyboardAnimatable.git
Working copy of https://github.com/ipedro/UIKeyboardAnimatable.git resolved at 1.0.0
Creating working copy for https://github.com/ipedro/UIKitOptions.git
Working copy of https://github.com/ipedro/UIKitOptions.git resolved at 0.3.3
Building for debugging...
[0/9] Copying Symbols.xcassets
[1/9] Copying ElementLibrary.xcassets
[3/65] Compiling UIKeyboardAnimatable AnyHashable+Notifications.swift
/host/spi-builder-workspace/.build/checkouts/UIKeyboardAnimatable/Sources/UIKeyboardAnimatable/Enums/KeyboardNotificationName.swift:25:8: error: no such module 'UIKit'
import UIKit
^
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/65] Emitting module UIKeyboardAnimatable
/host/spi-builder-workspace/.build/checkouts/UIKeyboardAnimatable/Sources/UIKeyboardAnimatable/Enums/KeyboardNotificationName.swift:25:8: error: no such module 'UIKit'
import UIKit
^
[5/65] Compiling UIKeyboardAnimatable Notification.Name+Keyboard.swift
/host/spi-builder-workspace/.build/checkouts/UIKeyboardAnimatable/Sources/UIKeyboardAnimatable/Enums/KeyboardNotificationName.swift:25:8: error: no such module 'UIKit'
import UIKit
^
[6/65] Compiling CoordinatorAPI CoordinatorProtocol+Startable.swift
/host/spi-builder-workspace/.build/checkouts/Coordinator/Sources/CoordinatorAPI/Extensions/CoordinatorProtocol+Startable.swift:21:8: error: no such module 'UIKit'
import UIKit
^
[7/65] Compiling UIKeyboardAnimatable KeyboardAnimatable.swift
/host/spi-builder-workspace/.build/checkouts/UIKeyboardAnimatable/Sources/UIKeyboardAnimatable/Enums/KeyboardNotificationName.swift:25:8: error: no such module 'UIKit'
import UIKit
^
[8/65] Compiling UIKitOptions UIColorPickerViewController+Init.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[9/65] Compiling UIKitOptions UIColorPickerViewController+Options.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[10/65] Compiling UIKitOptions UIDocumentPickerViewController+Init.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[11/65] Compiling UIKitOptions UIDocumentPickerViewController+Options.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[12/65] Compiling UIKitOptions UIEdgetInsets+Convenience.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[13/65] Compiling UIKitOptions UIFont+SymbolicTraits.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[14/70] Compiling UIKitOptions UIImage+Options.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[15/70] Compiling UIKitOptions UIImage+Resize.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[16/70] Compiling UIKitOptions UIImageView+Init.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[17/70] Compiling UIKitOptions UIImageView+Options.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[18/70] Compiling UIKitOptions UIKeyCommand+Constants.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[19/70] Compiling UIKitOptions UIKeyCommand+Init.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[20/70] Compiling UIKitOptions UIStackView+Subviews.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[21/70] Compiling UIKitOptions UIStepper+Init.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[22/70] Compiling UIKitOptions UIStepper+Options.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[23/70] Compiling UIKitOptions UITableView+Init.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
error: compile command failed due to signal 6 (use -v to see invocation)
[24/70] Compiling UIKitOptions UITableView+Options.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[25/70] Compiling UIKitOptions UIScrollView+Init.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[26/70] Compiling UIKitOptions UIScrollView+Options.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[27/70] Compiling UIKitOptions UIStackView+Alignment.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[28/70] Compiling UIKitOptions UIStackView+Init.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
[29/70] Compiling UIKitOptions UIStackView+Options.swift
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift:8:8: error: no such module 'UIKit'
import UIKit
^
Can't demangle: $s12UIKitOptions0B0O20discoverabilityTitle33_34CD8CAE352F3128614B915D6CED2C38LLXeF5titleL_SSvp
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the crash backtrace.
Stack dump:
0. Program arguments: /usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/CALayer/CALayer+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/NSAttributedString/NSAttributedString+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/NSAttributedString/NSAttributedString+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/NSDirectionalEdgeInsets/NSDirectionalEdgeInsets+Convenience.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/NumberFormatter/NumberFormatter+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/NumberFormatter/NumberFormatter+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIColorPickerViewController/UIColorPickerViewController+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIColorPickerViewController/UIColorPickerViewController+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIDocumentPickerViewController/UIDocumentPickerViewController+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIDocumentPickerViewController/UIDocumentPickerViewController+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIEdgeInsets/UIEdgetInsets+Convenience.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIFont/UIFont+SymbolicTraits.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIImage/UIImage+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIImage/UIImage+Resize.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIImageView/UIImageView+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIImageView/UIImageView+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIKeyCommand/UIKeyCommand+Constants.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIKeyCommand/UIKeyCommand+Init.swift -primary-file /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIKeyCommand/UIKeyCommand+Options.swift -primary-file /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UILabel/UILabel+Init.swift -primary-file /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UILabel/UILabel+Options.swift -primary-file /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UINavigationController/UINavigationController+Init.swift -primary-file /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UINavigationController/UINavigationController+Options.swift -primary-file /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIPopoverPresentationController/UIPopoverPresentationController+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIScrollView/UIScrollView+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIScrollView/UIScrollView+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIStackView/UIStackView+Alignment.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIStackView/UIStackView+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIStackView/UIStackView+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIStackView/UIStackView+Subviews.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIStepper/UIStepper+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIStepper/UIStepper+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UITableView/UITableView+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UITableView/UITableView+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UITextField/UITextField+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UITextField/UITextField+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UITextView/UITextView+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UITextView/UITextView+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIView+Options/UIView+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIView+Options/UIView+LayoutCompressionOptions.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIView+Options/UIView+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIViewController/UIViewController+Init.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIViewController/UIViewController+Options.swift /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UTTType/UTTTypeOption.swift -supplementary-output-file-map /tmp/TemporaryDirectory.CzR5A8/supplementaryOutputs-4 -target x86_64-unknown-linux-gnu -disable-objc-interop -I /host/spi-builder-workspace/.build/x86_64-unknown-linux-gnu/debug -enable-testing -g -module-cache-path /host/spi-builder-workspace/.build/x86_64-unknown-linux-gnu/debug/ModuleCache -suppress-warnings -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -new-driver-path /usr/bin/swift-driver -empty-abi-descriptor -resource-dir /usr/lib/swift -enable-anonymous-context-mangled-names -Xcc -fPIC -module-name UIKitOptions -plugin-path /usr/lib/swift/host/plugins -plugin-path /usr/local/lib/swift/host/plugins -parse-as-library -o /host/spi-builder-workspace/.build/x86_64-unknown-linux-gnu/debug/UIKitOptions.build/UIKeyCommand/UIKeyCommand+Options.swift.o -o /host/spi-builder-workspace/.build/x86_64-unknown-linux-gnu/debug/UIKitOptions.build/UILabel/UILabel+Init.swift.o -o /host/spi-builder-workspace/.build/x86_64-unknown-linux-gnu/debug/UIKitOptions.build/UILabel/UILabel+Options.swift.o -o /host/spi-builder-workspace/.build/x86_64-unknown-linux-gnu/debug/UIKitOptions.build/UINavigationController/UINavigationController+Init.swift.o -o /host/spi-builder-workspace/.build/x86_64-unknown-linux-gnu/debug/UIKitOptions.build/UINavigationController/UINavigationController+Options.swift.o -o /host/spi-builder-workspace/.build/x86_64-unknown-linux-gnu/debug/UIKitOptions.build/UIPopoverPresentationController/UIPopoverPresentationController+Options.swift.o -index-store-path /host/spi-builder-workspace/.build/x86_64-unknown-linux-gnu/debug/index/store -index-system-modules
1. Swift version 5.9-dev (LLVM 71b6f8f40249d4a, Swift 0027fac736e2385)
2. Compiling with the current language version
3. While walking into 'Options' (at /host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIKeyCommand/UIKeyCommand+Options.swift:15:14)
4. While evaluating request USRGenerationRequest(UIKitOptions.(file). extension.Options.discoverabilityTitle(title:key:).title@/host/spi-builder-workspace/.build/checkouts/UIKitOptions/Sources/UIKitOptions/UIKeyCommand/UIKeyCommand+Options.swift:66:35)
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
/usr/bin/swift-frontend[0x6bbfa73]
/usr/bin/swift-frontend[0x6bbd68e]
/usr/bin/swift-frontend[0x6bbfddf]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x14420)[0x7f07164bd420]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7f07158f100b]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x12b)[0x7f07158d0859]
/usr/bin/swift-frontend[0x2335662]
/usr/bin/swift-frontend[0x1f8ee74]
/usr/bin/swift-frontend[0x22f96f9]
/usr/bin/swift-frontend[0x1c40e8c]
/usr/bin/swift-frontend[0x88c6e7]
/usr/bin/swift-frontend[0x88c207]
/usr/bin/swift-frontend[0x88b2de]
/usr/bin/swift-frontend[0x22fa20a]
/usr/bin/swift-frontend[0x8583d9]
/usr/bin/swift-frontend[0x857be7]
/usr/bin/swift-frontend[0x854cde]
/usr/bin/swift-frontend[0x156a12d]
/usr/bin/swift-frontend[0x1fe4b32]
/usr/bin/swift-frontend[0x1fe7c6b]
/usr/bin/swift-frontend[0x1fe4b7a]
/usr/bin/swift-frontend[0x1fe8a66]
/usr/bin/swift-frontend[0x1fe4b7a]
/usr/bin/swift-frontend[0x1fe8395]
/usr/bin/swift-frontend[0x1fe4b7a]
/usr/bin/swift-frontend[0x1fe4a43]
/usr/bin/swift-frontend[0x21c6162]
/usr/bin/swift-frontend[0x1567816]
/usr/bin/swift-frontend[0x854300]
/usr/bin/swift-frontend[0x85419a]
/usr/bin/swift-frontend[0x8498c5]
/usr/bin/swift-frontend[0x8492c4]
/usr/bin/swift-frontend[0x66fabc]
/usr/bin/swift-frontend[0x66dabc]
/usr/bin/swift-frontend[0x669040]
/usr/bin/swift-frontend[0x4c4b51]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7f07158d2083]
/usr/bin/swift-frontend[0x4c429e]
[30/70] Compiling UIKeyboardAnimatable Notification+KeyboardAnimationInfo.swift
/host/spi-builder-workspace/.build/checkouts/UIKeyboardAnimatable/Sources/UIKeyboardAnimatable/Enums/KeyboardNotificationName.swift:25:8: error: no such module 'UIKit'
import UIKit
^
[31/70] Compiling UIKeyboardAnimatable KeyboardNotificationName.swift
/host/spi-builder-workspace/.build/checkouts/UIKeyboardAnimatable/Sources/UIKeyboardAnimatable/Enums/KeyboardNotificationName.swift:25:8: error: no such module 'UIKit'
import UIKit
^
[32/70] Compiling UIKeyboardAnimatable UIView+KeyboardAnimation.swift
/host/spi-builder-workspace/.build/checkouts/UIKeyboardAnimatable/Sources/UIKeyboardAnimatable/Enums/KeyboardNotificationName.swift:25:8: error: no such module 'UIKit'
import UIKit
^
[33/70] Compiling UIKeyboardAnimatable KeyboardAnimation.swift
/host/spi-builder-workspace/.build/checkouts/UIKeyboardAnimatable/Sources/UIKeyboardAnimatable/Enums/KeyboardNotificationName.swift:25:8: error: no such module 'UIKit'
import UIKit
^
error: fatalError
[34/70] Compiling CoordinatorAPI RootViewControllerProtocol.swift
/host/spi-builder-workspace/.build/checkouts/Coordinator/Sources/CoordinatorAPI/Extensions/CoordinatorProtocol+Startable.swift:21:8: error: no such module 'UIKit'
import UIKit
^
/host/spi-builder-workspace/.build/checkouts/Coordinator/Sources/CoordinatorAPI/Extensions/CoordinatorProtocol+Startable.swift:21:8: error: no such module 'UIKit'
import UIKit
^
BUILD FAILURE 5.9 linux
Build Machine: Linux 2