blocks|key|2357908|text|我在Jenkins上用Xcode+12测试版构建了类似的问题。当我与jenkins用户一起在终端中运行xcrun+simctl列表时，我看到|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2357909|==+Runtimes+==
iOS+14.0+(14.0+-+18A5351d)+-+com.apple.CoreSimulator.SimRuntime.iOS-14-0
tvOS+14.0+(14.0+-+18J5364d)+-+com.apple.CoreSimulator.SimRuntime.tvOS-14-0
watchOS+7.0+(7.0+-+18R5361c)+-+com.apple.CoreSimulator.SimRuntime.watchOS-7-0|code-block|syntax|javascript|2357910|但是，如果我使用相同的simctl命令由Jenkins作业执行，则结果是|2357911|==+Runtimes+==
iOS+14.0+(14.0+-+18A5351d)+-+com.apple.CoreSimulator.SimRuntime.iOS-14-0+(unavailable,+failed+to+open+liblaunch_sim.dylib)
tvOS+14.0+(14.0+-+18J5364d)+-+com.apple.CoreSimulator.SimRuntime.tvOS-14-0+(unavailable,+failed+to+open+liblaunch_sim.dylib)
watchOS+7.0+(7.0+-+18R5361c)+-+com.apple.CoreSimulator.SimRuntime.watchOS-7-0+(unavailable,+failed+to+open+liblaunch_sim.dylib)|2357912|虽然我找不到解决办法，但我找到了解决办法。如果我停止Jenkins作为启动守护进程运行并从终端手动启动它，则Xcode+beta构建运行良好。|2357913|#+Stop+Jenkins
sudo+launchctl+unload+/Library/LaunchDaemons/org.jenkins-ci.plist

#+Impersonate+jenkins+user
sudo+su+-+jenkins

#+Tell+Jenkins+where+its+home+dir+is+located
export+JENKINS_HOME=/Users/Shared/Jenkins/Home

#+Start+Jenkins+instance
/Library/Application\+Support/Jenkins/jenkins-runner.sh|2357914|上述所有路径都是默认路径。如果您的值恰好不同，您可以在文件/Library/LaunchDaemons/org.jenkins-ci.plist中找到正确的值。|2357915|entityMap^0|1F|E|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|12|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|13|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|14|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|V|$]]

I have a similar problem building with Xcode 12 beta on Jenkins. When I run xcrun simctl list in Terminal with jenkins user, I see
<pre><code>== Runtimes ==
iOS 14.0 (14.0 - 18A5351d) - com.apple.CoreSimulator.SimRuntime.iOS-14-0
tvOS 14.0 (14.0 - 18J5364d) - com.apple.CoreSimulator.SimRuntime.tvOS-14-0
watchOS 7.0 (7.0 - 18R5361c) - com.apple.CoreSimulator.SimRuntime.watchOS-7-0
</code></pre>
But if I put the same simctl command to be executed by a Jenkins job, the result is
<pre><code>== Runtimes ==
iOS 14.0 (14.0 - 18A5351d) - com.apple.CoreSimulator.SimRuntime.iOS-14-0 (unavailable, failed to open liblaunch_sim.dylib)
tvOS 14.0 (14.0 - 18J5364d) - com.apple.CoreSimulator.SimRuntime.tvOS-14-0 (unavailable, failed to open liblaunch_sim.dylib)
watchOS 7.0 (7.0 - 18R5361c) - com.apple.CoreSimulator.SimRuntime.watchOS-7-0 (unavailable, failed to open liblaunch_sim.dylib)
</code></pre>
Although I could not find a solution, I found a workaround. If I stop Jenkins from running as a launch daemon and start it manually from the Terminal, then Xcode beta builds run fine.
<pre><code># Stop Jenkins
sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plist

# Impersonate jenkins user
sudo su - jenkins

# Tell Jenkins where its home dir is located
export JENKINS_HOME=/Users/Shared/Jenkins/Home

# Start Jenkins instance
/Library/Application\ Support/Jenkins/jenkins-runner.sh
</code></pre>
All of the above paths are the default ones. If yours happen to be different, you may find the correct values in the file /Library/LaunchDaemons/org.jenkins-ci.plist

blocks|key|3230209|text|此命令可以修复以下问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3230210|sudo+xcrun+simctl+shutdown+all+&&+sudo+xcrun+simctl+erase+all|code-block|syntax|javascript|3230211|我在这里找到的：https://developer.apple.com/forums/thread/653807|offset|length|3230212|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/forums/thread/653807^0|0|0|8|1C|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

This command can fix the issue:
<pre><code>sudo xcrun simctl shutdown all &amp;&amp; sudo xcrun simctl erase all
</code></pre>
And I found it here: <a href="https://developer.apple.com/forums/thread/653807" rel="nofollow noreferrer">https://developer.apple.com/forums/thread/653807</a>

blocks|key|3230250|text|我在Xcode+12.1上看到了这个问题，它使用Jenkins的默认安装。这些解决方案都不起作用，“手动运行sh脚本”导致Jenkins甚至无法加载。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3230251|我正在对如下所示的设备(而不是模拟器)使用build命令：|3230252|/usr/bin/xcodebuild+-scheme+MyApp+-workspace+MyApp.xcworkspace+-configuration+Debug+clean+build+DEVELOPMENT_TEAM=XXXXXXXXXX+-allowProvisioningUpdates+test+-destination+platform=iOS,id=theIDofADeviceNotASimulator|code-block|syntax|javascript|3230253|当我从常规管理控制台用户的命令提示符运行该命令时，这个命令运行良好，而不是从Jenkins运行。|3230254|Jenkins通常安装在自己的/users/Shared/Jenkins帐户下。|offset|length|style|BOLD|3230255|此外，在Xcode+12.2发行说明(我在12.1上)中，仍然存在一个“已知的问题”，即在从非根LaunchDaemon运行命令行工具(例如simctl或xcodebuild)或以与当前用户不同的用户身份启动时(例如，使用sudo或launchctl)，可能无法使用模拟器。(62188195)+-+https://developer.apple.com/documentation/xcode-release-notes/xcode-12_2-beta-release-notes|3230256|这个问题似乎存在于设备和模拟器上。|3230257|更新解决方案是在常规用户下使用国产软件重新安装Jenkins，让他们自动登录，然后在用户登录时使用附加到该用户的LaunchAgent启动jenkins。|3230258|Jenkins不再支持使用"jenkins用户“安装并作为LaunchDaemon运行，Xcode也不支持。|3230259|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/documentation/xcode-release-notes/xcode-12_2-beta-release-notes^0|0|0|0|0|F|L|0|46|2J|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|17|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|18|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|19|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1A|8|@$M|1B|N|1C|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1D|8|@]|9|@$M|1E|N|1F|1|1G]]|A|$]]|$1|S|3|T|5|6|7|1H|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1I|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1J|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15]]]]

I am seeing this issue on Xcode 12.1 using the default install of Jenkins. None of these solutions work, and the &quot;manual run of the sh script&quot; results in Jenkins not even being able to load at all.
I am using a build command against a device (not a simulator) that looks like this:
<pre><code>/usr/bin/xcodebuild -scheme MyApp -workspace MyApp.xcworkspace -configuration Debug clean build DEVELOPMENT_TEAM=XXXXXXXXXX -allowProvisioningUpdates test -destination platform=iOS,id=theIDofADeviceNotASimulator
</code></pre>
This command runs fine when I run it from the command prompt of my regular admin console user, but not from Jenkins.
Jenkins is installed normally under its own /users/Shared/Jenkins account.
Also, I see that in the Xcode 12.2 release notes (I am on 12.1) there is still a &quot;known issue&quot; that says Simulators may not be available when running command-line tools like simctl or xcodebuild from a non-root LaunchDaemon, or when launching as a different user from the current user (for example, with sudo or launchctl). (62188195) - <a href="https://developer.apple.com/documentation/xcode-release-notes/xcode-12_2-beta-release-notes" rel="nofollow noreferrer">https://developer.apple.com/documentation/xcode-release-notes/xcode-12_2-beta-release-notes</a>
The issue seems to exist on the devices as well as the simulators.
UPDATE
The solution is to reinstall Jenkins using homebrew under your regular user, have them auto-login, then use a LaunchAgent attached to that user to start jenkins when your user logs in.
Jenkins no longer supports being installed using the &quot;jenkins user&quot; and running as a LaunchDaemon, and neither does Xcode.

I have installed Xcode 12 beta 2. I tried to run our xamarin project through Jenkins on Mac OS Catalina. It fails with the below error. When I build the same project from Mac Visual studio, it succeeded without any error.
<pre><code>SplashViewController.storyboard : error :
 iOS 14.0 (14.0 - 18A5319g) - com.apple.CoreSimulator.SimRuntime.iOS-14-0 (unavailable, failed to open liblaunchsim.dylib) ==&gt; not available:
 Error Domain=com.apple.CoreSimulator.SimError Code=401 &quot;The iOS 14.0 simulator runtime is not available.&quot;
 UserInfo={NSLocalizedDescription=The iOS 14.0 simulator runtime is not available.,
 NSUnderlyingError=0x7fef8847b520 {Error Domain=NSPOSIXErrorDomain Code=53 &quot;Software caused connection abort&quot;
 UserInfo={NSLocalizedFailureReason=XPC error talking to SimLaunchHostService: &lt;error: 0x7fff97d649a0&gt; { count = 1, transaction: 0, voucher = 0x0,_
</code></pre>
I also did <code>xcrun simctl list</code> to view the available runtime simulators for Xcode 12 beta.
It shows the below list but fails while building.
== Runtimes ==
<pre><code>iOS 14.0 (14.0 - 18A5319g) -
com.apple.CoreSimulator.SimRuntime.iOS-14-0
tvOS 14.0 (14.0 - 18J5331g) -
com.apple.CoreSimulator.SimRuntime.tvOS-14-0
watchOS 7.0 (7.0 - 18R5327h) -
com.apple.CoreSimulator.SimRuntime.watchOS-7-0
</code></pre>
== Devices ==
When I opened Xcode Settings and clicked to Components -&gt; Simulator I do not see iOS 14 in the list:
Can anyone help me to resolve this?

Xcode 12 Beta - Cannot find simulator runtime

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我已经安装了Xcode 12 beta 2，我试图在上通过Jenkins运行我们的xamarin项目。如果出现以下错误，它将失败。当我从构建相同的项目时，它成功了，没有任何错误。SplashViewController.storyboard : error : iOS 14.0 (14.0 - 18A5319g) - ...

问Xcode 12 Beta -找不到模拟器运行时
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