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Ran 28 May 2026 01:19AM UTC

Files 1194

Run time 36s

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Committed 28 May 2026 12:45AM UTC coverage: 53.572%. Remained the same

Job # 26547580570.1

Build Type

push

github

Committed by

web-flow

Commit Message

remote_cache: don't drop outputs for REv2.0 root-capture actions (#23381)

make_tree_for_output_directory returned Ok(None) for empty
directory_path because DigestTrie::entry("") has no root match. The
caller in make_action_result then continued, silently dropping the
OutputDirectory from the ActionResult that Pants uploads via
UpdateActionResult, overwriting any correct entry the remote server had
auto-written during Execute.

This corrupted the AC for every action using REv2.0
output_directories=[""] / ["."] (Pants's normalized root-capture).
Subsequent AC hits deserialized to a "successful action with no
outputs", producing broken downstream consumers.

Fix: special-case empty directory_path in
make_tree_for_output_directory to walk the entire root_trie instead of
asking for a child entry named "". The rest of the function is
unchanged.

Affects all four inner runners behind remote_cache::CommandRunner
(local, nailgun, docker, remote execution). The remote-execution path
was intermittently masked by the server's auto-write surviving when the
Pants tail-task didn't.

Coverage Stats

32357 of 60399 relevant lines covered (53.57%)

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