Crashlytics upload of Flutter-generated symbols file works for Android but fails for iOS

See original GitHub issue

[REQUIRED] Environment info

firebase-tools: 11.16.1

Platform: maOS 12.6.1 (Monteray) on M1 MacBook Pro

[REQUIRED] Test case

The test case is uploading the symbols for iOS and Android. I created these with these two Flutter commands:

Android: flutter build appbundle --obfuscate --split-debug-info=./etc/debug-info/build
iOS: flutter build ipa --export-method=ad-hoc --obfuscate --split-debug-info=./etc/debug-info/build

[REQUIRED] Steps to reproduce

Unzip sym-test.zip into a directory on your PC/Mac.
Go into that directory in a terminal.
Execute this command to upload the Android debug symbols. Please apply your own Firebase Android app ID: firebase crashlytics:symbols:upload --app [your Android app ID] ./android.
The Android debug symbols upload succeeds.
Execute this command to upload the iOS debug symbols. Please apply your own Firebase Android app ID: firebase crashlytics:symbols:upload --app [your iOS app ID] ./ios.

[REQUIRED] Expected behavior

The iOS debug symbols upload succeeds.

[REQUIRED] Actual behavior

The iOS debug symbols upload fails:

% firebase --debug crashlytics:symbols:upload --app [my iOS app ID] ./ios/
[2022-12-01T22:22:08.125Z] Buildtools Jar already downloaded at /Users/karsten/.cache/firebase/crashlytics/buildtools/crashlytics-buildtools-2.9.2.jar
i  Generating symbols for ./ios/
[CRASHLYTICS LOG DEBUG] Crashlytics Buildtools initialized.
[CRASHLYTICS LOG DEBUG] Skipping dumpsyms extraction, file exists: /Users/karsten/Desktop/sym-test/.crashlytics/dump_syms.bin
[CRASHLYTICS LOG DEBUG] Breakpad symbol generator initialized: /Users/karsten/Desktop/sym-test/.crashlytics/dump_syms.bin
[CRASHLYTICS LOG DEBUG] Generating native symbol files for /Users/karsten/Desktop/sym-test/./ios; writing output to: /var/folders/cz/llwnwdqn63x4m61trzt_k9980000gn/T/crashlytics-4ffc0077-5e9d-413b-82c9-5dcc4ad35a20/nativeSymbols/1-687174595027-ios-7d0d787db5cd141a013f26/breakpad
[CRASHLYTICS LOG DEBUG] 1 native libraries found at ./ios
[CRASHLYTICS LOG DEBUG] Crashlytics generating Breakpad Symbol file for: /Users/karsten/Desktop/sym-test/./ios/app.ios-arm64.symbols
[CRASHLYTICS LOG DEBUG] Extracting Breakpad symbols to temp file: /var/folders/cz/llwnwdqn63x4m61trzt_k9980000gn/T/crashlytics-4ffc0077-5e9d-413b-82c9-5dcc4ad35a20/nativeSymbols/1-687174595027-ios-7d0d787db5cd141a013f26/breakpad/app.ios-arm64.symbols8648314908030016259.tmp
[CRASHLYTICS LOG ERROR] Crashlytics execution failed.
java.io.IOException: Breakpad symbol generation failed (exit=1), see STDERR
	at com.google.firebase.crashlytics.buildtools.ndk.internal.breakpad.BreakpadSymbolGenerator.generateSymbols(BreakpadSymbolGenerator.java:133)
	at com.google.firebase.crashlytics.buildtools.Buildtools.generateNativeSymbolFiles(Buildtools.java:273)
	at com.google.firebase.crashlytics.buildtools.CommandLineHelper.executeGenerateSymbols(CommandLineHelper.java:185)
	at com.google.firebase.crashlytics.buildtools.CommandLineHelper.executeCommand(CommandLineHelper.java:118)
	at com.google.firebase.crashlytics.buildtools.CommandLineHelper.main(CommandLineHelper.java:65)
	at com.google.firebase.crashlytics.buildtools.Buildtools.main(Buildtools.java:111)

Error: java command failed with args: -jar,/Users/karsten/.cache/firebase/crashlytics/buildtools/crashlytics-buildtools-2.9.2.jar,-symbolGenerator,breakpad,-symbolFileCacheDir,/var/folders/cz/llwnwdqn63x4m61trzt_k9980000gn/T/crashlytics-4ffc0077-5e9d-413b-82c9-5dcc4ad35a20/nativeSymbols/1-687174595027-ios-7d0d787db5cd141a013f26/breakpad,-verbose,-generateNativeSymbols,-unstrippedLibrary,./ios/,-clientName,firebase-cli;crashlytics-buildtools
%