For additional context, the build log https://people.debian.org/~sanvila/build-logs/202412/golang-golang-x-net_0.27.0-1_amd64-20241206T201010.312Z contains the error (which was missing from this bug report):
... --- PASS: TestNodeLabel (0.00s) === RUN TestFind --- PASS: TestFind (0.00s) === RUN TestICANN --- PASS: TestICANN (0.00s) === RUN TestPublicSuffix --- PASS: TestPublicSuffix (0.00s) === RUN TestSlowPublicSuffix --- PASS: TestSlowPublicSuffix (0.06s) === RUN TestNumICANNRules list_test.go:328: first Private rule: got "co.krd", wawnt "cc.ua" --- FAIL: TestNumICANNRules (0.00s) === RUN TestEffectiveTLDPlusOne --- PASS: TestEffectiveTLDPlusOne (0.00s) === RUN ExamplePublicSuffix_manager --- PASS: ExamplePublicSuffix_manager (0.00s) FAIL FAIL golang.org/x/net/publicsuffix 0.063s === RUN TestAckDelayFromDuration --- PASS: TestAckDelayFromDuration (0.00s) === RUN TestAckDelayToDuration --- PASS: TestAckDelayToDuration (0.00s) === RUN TestAcksDisallowDuplicate --- PASS: TestAcksDisallowDuplicate (0.00s) === RUN TestAcksDisallowDiscardedAckRanges --- PASS: TestAcksDisallowDiscardedAckRanges (0.00s) ... I triggered a CI run of debian/1%0.27.0-1 at https://salsa.debian.org/go-team/packages/golang-golang-x-net/-/jobs/6868425 to see if this failure can be reproduced, but this test_the_archive test in Go team does not actually test the build.. This has not been reported upstream yet AFAIK, nor do we have confirmation if this is already fixed upstream in latest upstream 0.33.0. Right now the assumption is that disabling tests as done in https://salsa.debian.org/go-team/packages/golang-golang-x-net/-/commit/10ea21eac6329abc14362e97d0deba4b32040391 is the required fix.