%YAML 1.1 --- - name: duplicate-anchor-1 fail: true mark: { line: 3, column: 3 } mark2: { line: 1, column: 3 } error: | Unable to load test/duplicate-errors.yaml#duplicate-anchor-1:yaml: Found duplicate anchor: foo yaml: | - &foo bar - &bar bar - &foo bar - name: duplicate-anchor-2 fail: true mark: { line: 1, column: 16 } mark2: { line: 1, column: 1 } error: | Unable to load test/duplicate-errors.yaml#duplicate-anchor-2:yaml: Found duplicate anchor: foo yaml: | &foo [1, 2, 3, &foo 4] - name: duplicate-mapping-key fail: true mark: { line: 2, column: 1 } mark2: { line: 1, column: 1 } error: | Unable to load test/duplicate-errors.yaml#duplicate-mapping-key:yaml: Key 'a' appears multiple times in mapping yaml: |- a: 1 a: 2 - name: duplicate-tag-directive fail: true mark: { line: 2, column: 1 } error: "Duplicate tag handle: !foo!" yaml: | %TAG !foo! bar %TAG !foo! baz --- foo - name: duplicate-yaml-directive fail: true mark: { line: 2, column: 1 } error: "Duplicate YAML directive" yaml: | %YAML 1.1 %YAML 1.1 --- foo