This is a testharness.js-based test.
[FAIL] DeprecationReportBody interface: existence and properties of interface object
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface object length
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface object name
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface: existence and properties of interface prototype object
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface: existence and properties of interface prototype object's "constructor" property
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface: existence and properties of interface prototype object's @@unscopables property
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface: operation toJSON()
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface: attribute id
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface: attribute anticipatedRemoval
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface: attribute message
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface: attribute sourceFile
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface: attribute lineNumber
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
[FAIL] DeprecationReportBody interface: attribute columnNumber
assert_own_property: self does not have own property "DeprecationReportBody" expected property "DeprecationReportBody" missing
Harness: the test ran to completion.