Update nightly toolchain to nightly-2026-03-14

[nyonson]

Automated changes by create-pull-request GitHub action

[apoelstra]

What's up with CI here? Should I be running my local CI on stuff here? (Note that it will be way faster than on rust-bitcoin because it's just one crate without a huge feature set. Probably it'd be feasible for other people to run it if they were so inclined.)

[nyonson]

What's up with CI here?

There wasn't much here before so I have been using it as a test bed for cargo-rbmt. Which appears to have burst into flames...but the fix (to my bug) is looking good: #80

Should I be running my local CI on stuff here?

As we switch over to this being the PSBT home we probably want the highest bar, so yes? I admit I'd love for cargo-rbmt to match that, but I am not sure if it's there yet.

[nyonson]

Gonna close this out and just wait for the next week to pick up the new version.

[tcharding]

Should I be running my local CI on stuff here?

I'd personally like to crank like f*** in this repo with minimal roundtrip delays between devs. At least until we have made a bunch of progress. Can we just use GitHub actions as CI and one-ack merge policy?