sagemathgh-36937: CI Conda: Add to known-test-failures

    
Not all of the added failures are conda-specific, but the 6 instances of
CI Conda amplify the error probability
(sagemath#36694 (comment))

We also add info (ideally a link to the GitHub Issue where the failure
is reported) to the failures and arrange for it to be printed by the
doctester as part of the `[failed in baseline]` message.

Marked as blocker so it takes effect in CI runs -- to reduce the noise
from failures of the Conda CI that PR authors and reviewers find
distracting.

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### ⌛ Dependencies

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- Depends on sagemath#36936 (which refactors the `[failed in baseline]`
printing)

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URL: sagemath#36937
Reported by: Matthias Köppe
Reviewer(s): Kwankyu Lee, Matthias Köppe, Tobias Diez

.github/workflows/ci-conda-known-test-failures.json

@@ -1,12 +1,18 @@
 {
+    "doc.en.constructions.calculus": {
+        "failed": "unreported random failures in plotting"
+    },
     "sage_setup.clean": {
-        "failed": true
+        "failed": "_find_stale_files finds some stale files under sage/tests when executed under conda"
+    },
+    "sage.algebras.fusion_rings.fusion_ring": {
+        "failed": "unreported random timeouts"
     },
     "sage.combinat.cluster_algebra_quiver.quiver": {
-        "failed": true
+        "failed": "failure seen in https://github.com/sagemath/sage/actions/runs/6836592771/job/18591690058#step:11:10059"
     },
     "sage.geometry.cone": {
-        "failed": true
+        "failed": "unreported random timeouts seen in https://github.com/sagemath/sage/actions/runs/6827937663/job/18571052628#step:11:12362"
     },
     "sage.groups.matrix_gps.finitely_generated_gap": {
         "failed": true
@@ -15,38 +21,62 @@
         "failed": true
     },
     "sage.libs.gap.element": {
-        "failed": true
+        "failed": "failure seen in https://github.com/sagemath/sage/actions/runs/6840579851/job/18600012965#step:11:13016"
     },
     "sage.libs.singular.singular": {
         "failed": true
     },
     "sage.matrix.matrix2": {
-        "failed": true
+        "failed": "failure seen in https://github.com/sagemath/sage/actions/runs/6835143781/job/18588599649#step:11:16939"
     },
     "sage.matrix.matrix_integer_sparse": {
-        "failed": true
+        "failed": "failure seen in https://github.com/sagemath/sage/actions/runs/6827937663/job/18571052628#step:11:12362"
     },
     "sage.misc.lazy_import": {
         "failed": true
     },
     "sage.misc.weak_dict": {
-        "failed": true
+        "failed": "failure seen in https://github.com/sagemath/sage/actions/runs/6870325919/job/18684964234#step:11:10059"
     },
     "sage.modular.modform.l_series_gross_zagier": {
-        "failed": true
+        "failed": "unreported failure seen in https://github.com/sagemath/sage/actions/runs/6859244281/job/18651257775#step:11:10102"
+    },
+    "sage.numerical.linear_tensor_element": {
+        "failed": "random segfaults https://github.com/sagemath/sage/issues/28559"
+    },
+    "sage.parallel.map_reduce": {
+        "failed": "random failure https://github.com/sagemath/sage/issues/36939"
+    },
+    "sage.plot.plot": {
+        "failed": "unreported random failure (macOS)"
     },
     "sage.rings.function_field.drinfeld_modules.morphism": {
-        "failed": true
+        "failed": "unreported random failure seen in https://github.com/sagemath/sage/actions/runs/6840502530/job/18599835766#step:11:10107"
     },
     "sage.rings.polynomial.multi_polynomial_ideal": {
         "failed": true
     },
     "sage.rings.polynomial.multi_polynomial_libsingular": {
         "failed": true
     },
+    "sage.rings.polynomial.polynomial_element": {
+        "failed": "unreported random failure in symbolic 'roots' (macOS)"
+    },
     "sage.rings.polynomial.skew_polynomial_finite_field": {
         "failed": true
     },
+    "sage.schemes.elliptic_curves.descent_two_isogeny": {
+        "failed": "random segfault (macOS) https://github.com/sagemath/sage/issues/36949"
+    },
+    "sage.schemes.elliptic_curves.ell_field": {
+        "failed": "random failure https://github.com/sagemath/sage/issues/36832"
+    },
+    "sage.sets.recursively_enumerated_set": {
+        "failed": "random failures related to AlarmInterrupt (macOS)"
+    },
+    "sage.structure.coerce_actions": {
+        "failed": "random failure https://github.com/sagemath/sage/issues/35973"
+    },
     "sage.tests.gap_packages": {
         "failed": true
     }

src/sage/doctest/reporting.py

@@ -213,10 +213,13 @@ def report_head(self, source, fail_msg=None):
         baseline = self.controller.source_baseline(source)
         if fail_msg:
             cmd += "  # " + fail_msg
-        if baseline.get('failed', False):
+        if failed := baseline.get('failed', False):
             if not fail_msg:
                 cmd += "  #"
-            cmd += " [failed in baseline]"
+            if failed is True:
+                cmd += " [failed in baseline]"
+            else:
+                cmd += f" [failed in baseline: {failed}]"
         return cmd
 
     def report(self, source, timeout, return_code, results, output, pid=None):