viona: want F_EVENT_IDX support - #1171

control: job assigned to worker 01KY2HMXQRF9SYRDRNZQAR7SJE [factory aws, i-04f45763297ab2ca9] (queued for 45 s)
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task: starting task 0: "setup"
task: process exited: duration 4112 ms, exit code 0
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task: starting task 1: "rust-toolchain"
task: process exited: duration 16057 ms, exit code 0
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task: starting task 2: "authentication"
task: process exited: duration 16 ms, exit code 0
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task: starting task 3: "clone repository"
task: process exited: duration 1554 ms, exit code 0
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task: starting task 4: "build"
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|   cargo:warning=/work/oxidecomputer/propolis/crates/viona-api/header-check/target/debug/bu [...]
|   cargo:warning=  751 |                 }
|   cargo:warning=      |                 ^
|   cargo:warning=/work/oxidecomputer/propolis/crates/viona-api/header-check/target/debug/bu [...]
|   cargo:warning=/work/oxidecomputer/propolis/crates/viona-api/header-check/target/debug/bu [...]
|   cargo:warning=  756 |                 }
|   cargo:warning=      |                 ^
|   cargo:warning=At top level:
|   cargo:warning=cc1: note: unrecognized command-line option '-Wno-unknown-warning-option'  [...]
|   cargo:warning=cc1: all warnings being treated as errors
| 
|   --- stderr
|   rust version: 1.90.0
| 
| 
|   error occurred in cc-rs: command did not execute successfully (status code exit status:  [...]
| 
| 
task: process exited: duration 80901 ms, exit code 101
|W| found 0 output files