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- $ >output/source.txt
- $ ~/scons/bin/scons --dry-run --debug=duplicate --taskmastertrace=trace.txt -f SConstruct.error
- scons: Reading SConscript files ...
- scons: done reading SConscript files.
- scons: Building targets ...
- dup: no src for output/source.txt, unlinking old variant copy
- scons: building associated VariantDir targets: output
- scons: *** [output/target.txt] Source `output/source.txt' not found, needed by target `output/target.txt'.
- scons: building terminated because of errors.
- $ more trace.txt
- Taskmaster: Looking for a node to evaluate
- Taskmaster: Considering node <no_state 0 'output'> and its children:
- Taskmaster: <no_state 0 'output/source.txt'>
- Taskmaster: <no_state 0 'output/target.txt'>
- Taskmaster: adjusted ref count: <pending 1 'output'>, child 'output/source.txt'
- Taskmaster: adjusted ref count: <pending 2 'output'>, child 'output/target.txt'
- Taskmaster: Considering node <no_state 0 'output/source.txt'> and its children:
- Taskmaster: Evaluating <pending 0 'output/source.txt'>
- Task.make_ready_current(): node <pending 0 'output/source.txt'>
- Task.prepare(): node <up_to_date 0 'output/source.txt'>
- Task.executed_with_callbacks(): node <up_to_date 0 'output/source.txt'>
- Task.postprocess(): node <up_to_date 0 'output/source.txt'>
- Task.postprocess(): removing <up_to_date 0 'output/source.txt'>
- Task.postprocess(): adjusted parent ref count <pending 1 'output'>
- Taskmaster: Looking for a node to evaluate
- Taskmaster: Considering node <no_state 0 'output/target.txt'> and its children:
- Taskmaster: <up_to_date 0 'output/source.txt'>
- Taskmaster: <no_state 0 '/bin/cp'>
- Taskmaster: adjusted ref count: <pending 1 'output/target.txt'>, child '/bin/cp'
- Taskmaster: Considering node <no_state 0 '/bin/cp'> and its children:
- Taskmaster: Evaluating <pending 0 '/bin/cp'>
- Task.make_ready_current(): node <pending 0 '/bin/cp'>
- Task.prepare(): node <up_to_date 0 '/bin/cp'>
- Task.executed_with_callbacks(): node <up_to_date 0 '/bin/cp'>
- Task.postprocess(): node <up_to_date 0 '/bin/cp'>
- Task.postprocess(): removing <up_to_date 0 '/bin/cp'>
- Task.postprocess(): adjusted parent ref count <pending 0 'output/target.txt'>
- Taskmaster: Looking for a node to evaluate
- Taskmaster: Considering node <pending 0 'output/target.txt'> and its children:
- Taskmaster: <up_to_date 0 'output/source.txt'>
- Taskmaster: <up_to_date 0 '/bin/cp'>
- Taskmaster: Evaluating <pending 0 'output/target.txt'>
- Task.make_ready_current(): node <pending 0 'output/target.txt'>
- Task.prepare(): node <executing 0 'output/target.txt'>
- Task.failed_stop(): node <executing 0 'output/target.txt'>
- Taskmaster: removing node <executing 0 'output/target.txt'> from the pending children set
- Taskmaster: removing parent <pending 0 'output'> from the pending children set
- Task.postprocess(): node <failed 0 'output/target.txt'>
- Taskmaster: Looking for a node to evaluate
- Taskmaster: removing node <no_state 0 '.'> from the pending children set
- Taskmaster: No candidate anymore.
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