fix: make the Personal licence return actually return the seat - #277
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe licensing test script adds regression coverage for editor-based returns, client-first fallback, successful entitlement handling, missing-license messages, retry-attempt reporting, and leaked-seat warning suppression. ChangesLicense return regression coverage
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`Unity.Licensing.Client --return-ulf` asks for a *file*. A Personal seat is an
entitlement, and no Unity_lic.ulf is written for it, so the return has never
worked:
Returning personal license seat
An error occured while trying to return the ULF license.
Ulf license file not found (/root/.local/share/unity3d/Unity/Unity_lic.ulf) (1404)
##[warning] Failed to return the Personal license seat after 4 attempts.
Measured on all six Unity versions of a user's run - 2020.3.49f1, 2021.3.45f2,
2022.3.62f3, 2023.2.22f1, 6000.3.23f1, 6000.6.0f1 - across licensing clients
1.12.1, 1.15.4, 1.16.2 and 1.18.3. Every one activated cleanly and then failed
to hand the seat back with the identical error, so this is not specific to the
editor fallback on old clients: --return-ulf is the wrong command for every
Personal activation this CLI performs.
The return now recognises a missing .ulf and hands the seat back through the
editor's -returnlicense instead, which is how the serial strategy already
returns an entitlement. It also picks its initial route the way activate.sh
picks its own - by probing the client's help text - so the two stay in step by
construction rather than by a flag one side has to remember to set.
Three defects surfaced by the same log:
- The capability helpers lived in activate.sh, which return_license.sh does
not source. Under runsteps.sh both run in one shell so it happened to be in
scope, but `game-ci return-license` on its own would have called an
undefined function. Moved beside unity_licensing_client_path.
- Both PowerShell ports of the v0.1.65 success-from-log guard broke out of the
retry loop without clearing the exit code, so a return that had succeeded
still warned that it failed.
- The failure warning hardcoded the retry maximum, so a return that broke out
on attempt 1 told the user it had tried four times. Two users read that
number off their logs while diagnosing this. It now reports what happened.
Nothing to hand back on either route now reports "nothing to return" rather
than warning about a leaked seat, which is its opposite.
scripts/test-licensing-steps.sh: 70 -> 80 tests. Each new assertion was
confirmed to fail with its fix reverted.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Inline comments:
In `@scripts/test-licensing-steps.sh`:
- Around line 630-631: Update the missing-.ulf fallback assertion in the
licensing test to verify the logged client attempt using the CLIENT --return-ulf
entry, while retaining the assertion that the editor fallback uses
-returnlicense.
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dist/platforms/mac/steps/activate.shis excluded by!**/dist/**dist/platforms/mac/steps/resolve_unity_path.shis excluded by!**/dist/**dist/platforms/mac/steps/return_license.shis excluded by!**/dist/**dist/platforms/ubuntu/steps/activate.shis excluded by!**/dist/**dist/platforms/ubuntu/steps/resolve_unity_path.shis excluded by!**/dist/**dist/platforms/ubuntu/steps/return_license.shis excluded by!**/dist/**dist/platforms/windows/return_license.ps1is excluded by!**/dist/**dist/platforms/windows/steps/return_license.ps1is excluded by!**/dist/**src/generated/embedded-assets.tsis excluded by!**/generated/**
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scripts/test-licensing-steps.sh
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The fallback case asserted only that -returnlicense was reached, so a run that never tried the client at all would have passed it - which is the failure the route selection itself could introduce. Confirmed by forcing the probe to choose the editor: the new assertion fails, the old one did not. Raised by CodeRabbit on #277. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Routing the return to the editor was necessary but not sufficient. Without
-username/-password the editor cannot refresh its access token, so the
entitlement return fails and it falls through to a ULF return it also cannot
do:
[Licensing::Module] Error: Access token is unavailable; failed to update
[Licensing::Module] Error: Failed to return entitlement license
[Licensing::Client] Successfully queried for the EntitlementGroupsDetails
[Licensing::Module] Error: Serial number unavailable for ULF return
Measured in this repo's own licensing matrix on 2020.3.49f1, 2022.3.62f3 and
6000.0.36f1, running this branch's scripts. The Machine Id is identical either
side of the return, which rules out the binding mismatch and leaves the missing
credentials as the cause.
The serial branch has passed them for exactly this reason since
game-ci/unity-test-runner#310, whose own comment records the same error string:
"without them Unity has no way to tell this was a serial-mode activation and
instead attempts a personal-license (ULF) return, which fails immediately with
'Serial number unavailable for ULF return'". The personal branch needed the
same treatment.
scripts/test-licensing-steps.sh: 81 -> 83 tests. Both new assertions were
confirmed to fail with the credentials removed.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
With credentials, the editor really does hand a Personal seat back:
[Licensing::Module] Successfully returned the entitlement license
Measured on 2020.3.49f1, 2022.3.62f3 and 6000.6.0f1 in this repo's licensing
matrix. But that string was not in the success pattern, so the script did not
recognise its own success - and the editor then attempts a ULF return it cannot
do and says "Serial number unavailable for ULF return", which IS in the
transient list.
So 2020.3 returned the same already-returned licence four times, burnt ~2.5
minutes of backoff, and warned that the return had failed. Exactly the failure
mode #276 fixed for the serial path, on a string that path never emits.
scripts/test-licensing-steps.sh: 83 -> 86 tests. All three new assertions, plus
two existing ones, fail with the string removed.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Every cell runs `activate` and `return-license` as separate commands, so they
get separate containers and separate machine identities, and a serial return is
refused with "Machine bindings don't match" every time. That says nothing about
whether the code works - a real build sources both in one container - so the
first run of this step graded all four serial cells as unreturnable.
Grading them red would park four permanently failing cells in the table, and a
table with cells everyone knows to ignore is the thing this workflow exists to
avoid. They now report `unmeasurable` ("separate container"), keyed on the
script's own permanent pattern, read from the script for the same reason
RETURNED is.
The fail/error discriminator was wrong too: it looked only for the three
command spellings, which the serial branch never prints, so a genuine return
failure was graded "probe never reached Unity". It now also accepts any
"Licensing::" line, which is the evidence that Unity's licensing module ran.
Measured on this branch: all four personal cells now grade `pass` - 2020.3.49f1,
2022.3.62f3, 6000.0.36f1 and 6000.6.0f1 activate AND return their Personal
seat. That round trip has never been green before, and until #277 it was never
even measured.
Still not covered: activate -> build -> return in ONE container, which is what a
real build does and where the serial return can actually succeed.
scripts/test-licensing-steps.sh: 88 -> 89 tests.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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* ci: make the licensing matrix measure the license return The return ran as `... || true` with its output discarded and its result never written into the cell, so the matrix measured activation only and reported 8/8 green while the return failed on every one of them. That is how #277 reached users: a run with six Unity versions warned "Failed to return the Personal license seat" on all six, on versions this matrix called healthy. A matrix that measures half a round trip is worse than no matrix, because it is what people point at to conclude there is no problem. The return now gets the same treatment as the activation - positive evidence from the log rather than an exit code, since Unity returns the licence and then exits non-zero - and a Return column beside Activate. `continue-on-error` stays so that one cell failing to return cannot abandon the other cells' returns. Three states, matching the activation probe's, plus one the activation has no equivalent for: "nothing held", which is a correct outcome rather than a failure. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * ci: read the return success pattern from the script, not a copy The first version of this step restated the scripts' success strings, and the copy was already stale the first time it ran: the scripts had learned "Successfully returned the entitlement license" - the editor's wording for a Personal seat, and the only one that matters for the personal cells - so the matrix graded a verified successful return as a failure. Its own comment claimed it judged "from the same strings, rather than inventing a second opinion". Now it actually does: the pattern is read out of return_license.sh at run time, and a cell that cannot read it reports `error` rather than silently grading against nothing. That extraction is a text match against a variable name, so it would break silently if the variable were renamed. Two tests cover it - confirmed that a consistent rename fails exactly those two and nothing else. scripts/test-licensing-steps.sh: 86 -> 88 tests. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * ci: stop grading the matrix's own container split as a return failure Every cell runs `activate` and `return-license` as separate commands, so they get separate containers and separate machine identities, and a serial return is refused with "Machine bindings don't match" every time. That says nothing about whether the code works - a real build sources both in one container - so the first run of this step graded all four serial cells as unreturnable. Grading them red would park four permanently failing cells in the table, and a table with cells everyone knows to ignore is the thing this workflow exists to avoid. They now report `unmeasurable` ("separate container"), keyed on the script's own permanent pattern, read from the script for the same reason RETURNED is. The fail/error discriminator was wrong too: it looked only for the three command spellings, which the serial branch never prints, so a genuine return failure was graded "probe never reached Unity". It now also accepts any "Licensing::" line, which is the evidence that Unity's licensing module ran. Measured on this branch: all four personal cells now grade `pass` - 2020.3.49f1, 2022.3.62f3, 6000.0.36f1 and 6000.6.0f1 activate AND return their Personal seat. That round trip has never been green before, and until #277 it was never even measured. Still not covered: activate -> build -> return in ONE container, which is what a real build does and where the serial return can actually succeed. scripts/test-licensing-steps.sh: 88 -> 89 tests. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
This was referenced Sep 15, 2026
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Returning a Personal seat has never worked. Four distinct defects, each one hiding the next; all four measured against real editors in this repo's licensing matrix.
1.
--return-ulfcannot return an entitlementIt asks for a file. A Personal seat is an entitlement, and no
Unity_lic.ulfis written for it:Measured on all six Unity versions of a user's run, across clients 1.12.1, 1.15.4, 1.16.2 and 1.18.3 — including the clients that do have
--include-personaland took the client route. Not specific to the editor fallback on old clients.The return now picks its route the way
activate.shpicks its own — by probing the client's help text — and additionally recognises a missing.ulfand switches to the editor, since the probe says which routeactivate.shwould take, not which one it did.2. The editor return needs credentials
Routing to the editor was necessary but not sufficient. Without
-username/-passwordit cannot refresh its access token:The Machine Id is identical either side of the return, which rules out a binding mismatch. The serial branch has passed credentials for exactly this reason since game-ci/unity-test-runner#310, whose comment records the same error string.
With them, the seat really is handed back — on 2020.3.49f1, 2022.3.62f3 and 6000.6.0f1:
3. That success wasn't recognised
The string above was not in the success pattern, and the editor then attempts a ULF return it cannot do (
Serial number unavailable for ULF return) — which is in the transient list. So 2020.3 returned the same already-returned licence four times, burnt ~2.5 minutes of backoff, and warned that the return had failed. The same failure mode #276 fixed for the serial path, on a string that path never emits.4. The warning lied about the attempt count
It hardcoded the retry maximum, so a return that broke out on attempt 1 reported four. Two users read that number off their logs while diagnosing this.
Also fixed
activate.sh, whichreturn_license.shdoes not source. Underrunsteps.shboth run in one shell so it happened to be in scope, butgame-ci return-licenseon its own would have called an undefined function. Moved besideunity_licensing_client_path.breakwithout clearing the exit code, so a successful return still warned.nothing to returnrather than warning about a leaked seat, which is its opposite.Why our own matrix said this was fine
licensing-capability-matrix.ymlruns the return ascontinue-on-error: truewith|| trueand never reads its result into the cell — it has been reporting 8/8 green throughout. Defects 2, 3 and 4 were only found by reading theReturn the seatstep logs by hand. #278 makes the matrix grade the return, and should merge first.Tests
scripts/test-licensing-steps.sh: 70 → 86. Every new assertion was confirmed to fail with its fix reverted.🤖 Generated with Claude Code
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