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[Regression] Fuchsia build times nearly doubled since clang role #177356

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[Regression] Fuchsia build times nearly doubled since clang role#177356
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c: regressionIt was better in the past than it is nowteam-infraOwned by Infrastructure team

Description

@jtmcdole
jtmcdole
opened on Oct 21, 2025

Fuchsia builds went from average 22 minutes to 45 minutes. Looking at the rbe metrics, there's a high ratio of compilation happening locally.

Image 
 W1020 12:00:58.390799   97010 server.go:696] eb85634e-f7bb-443f-b077-8be705d19620: Remote execution failed with &{ExitCode:1 Status:NonZeroExitResultStatus Err:<nil>}, falling back to local.
  stdout: In file included from ../../../flutter/third_party/boringssl/src/crypto/cipher/e_tls.cc:17:
 In file included from ../../../flutter/buildtools/linux-x64/clang/bin/../include/c++/v1/string.h:57:
 �[1m../../../flutter/buildtools/linux-x64/clang/bin/../include/c++/v1/__config:13:10: �[0m�[0;1;31mfatal error: �[0m�[1m'__config_site' file not found�[0m
    13 | #include <__config_site>�[0m
       | �[0;1;32m         ^~~~~~~~~~~~~~~
 �[0m1 error generated.

Activity

  1. huycozy
    added
    in triagePresently being triaged by the triage team
    c: regressionIt was better in the past than it is now
    team-infraOwned by Infrastructure team
    and removed
    in triagePresently being triaged by the triage team
    on Oct 22, 2025

  2. jtmcdole commented on Nov 10, 2025

    @jtmcdole
    jtmcdole
    on Nov 10, 2025
    MemberAuthor

    This was fixed by @jason-simmons

    Image
  3. jtmcdole
    closed this as completedon Nov 10, 2025

  4. github-actions commented on Nov 24, 2025

    @github-actions
    github-actionsbot
    on Nov 24, 2025 – with GitHub Actions

    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

  5. github-actions
    locked as resolved and limited conversation to collaborators on Nov 24, 2025
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