Tunnel the Support Shell through Nexus - #11199

control: job assigned to worker 01M17NCJGFDHSC4MJXQ7YVG7YW [factory aws, i-0db6aa2be9aab417e] (queued for 46 s)
...
task: starting task 0: "setup"
task: process exited: duration 4148 ms, exit code 0
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task: starting task 1: "rust-toolchain"
task: process exited: duration 16635 ms, exit code 0
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task: starting task 2: "authentication"
task: process exited: duration 18 ms, exit code 0
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task: starting task 3: "clone repository"
task: process exited: duration 13470 ms, exit code 0
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task: starting task 4: "build"
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| a out/probe.tar.gz 3037K
| a out/propolis-server.tar.gz 34642K
| a out/pumpkind-gz.tar 26647K
| a out/switch-softnpu.tar.gz 531222K
| 
| real     1:31.030545468
| user     1:27.947622508
| sys         5.135919381
| trap        0.007167718
| tflt        0.000000000
| dflt        0.000000000
| kflt        0.000000000
| lock        0.000000000
| slp      1:27.767780258
| lat         1.197926497
| stop        0.000206488
task: process exited: duration 1099172 ms, exit code 0
|W| found 1 output files
|W| uploading: /work/package.tar.gz (2807327464 bytes)
|W| uploaded: /work/package.tar.gz