Repeatedly attempt to start sled-agents in TQ bg task - #11064

control: job assigned to worker 01KZYEHESSD02K8CVCQJWBW210 [factory aws, i-037cf0fb97c6f7415] (queued for 52 s)
...
task: starting task 0: "setup"
task: process exited: duration 4137 ms, exit code 0
...
task: starting task 1: "rust-toolchain"
task: process exited: duration 17120 ms, exit code 0
...
task: starting task 2: "authentication"
task: process exited: duration 16 ms, exit code 0
...
task: starting task 3: "clone repository"
task: process exited: duration 13151 ms, exit code 0
...
task: starting task 4: "build"
...
|  Documenting omicron-uuid-kinds v0.1.0 (/work/oxidecomputer/omicron/uuid-kinds)
|  Documenting dev-tools-common v0.1.0 (/work/oxidecomputer/omicron/dev-tools/common)
|     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7m 28s
| warning: the following packages contain code that will be rejected by a future version of  [...]
| note: to see what the problems were, use the option `--future-incompat-report`, or run `ca [...]
|    Generated /work/oxidecomputer/omicron/target/doc/api_identity/index.html and 203 other  [...]
| 
| real     7:28.254387442
| user    20:16.235738629
| sys      4:20.817139918
| trap        0.296812977
| tflt        0.027554564
| dflt        0.103380017
| kflt        0.000029770
| lock  7:08:06.735203125
| slp   2:30:35.423933309
| lat        33.640804308
| stop     2:06.654159210
task: process exited: duration 835066 ms, exit code 0
|W| found 0 output files