[ddm, mg-lower, pt6] underlay membership sweep, admin v5, & mrib origination - #999

control: job assigned to worker 01M700QK1CWN4P6Z7JXM6PDDYY [factory aws, i-05f6f446ea4b1e175] (queued for 1 m 3 s)
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task: starting task 0: "setup"
task: process exited: duration 4184 ms, exit code 0
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task: starting task 1: "rust-toolchain"
task: process exited: duration 16378 ms, exit code 0
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task: starting task 2: "authentication"
task: process exited: duration 17 ms, exit code 0
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task: starting task 3: "clone repository"
task: process exited: duration 1317 ms, exit code 0
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task: starting task 4: "build"
task: process exited: duration 273543 ms, exit code 0
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