compositing: Make the constellation messages serializable.

[pcwalton]

Same idea as before. This depends on:

• servo/euclid#94
• hyperium/hyper#603

r? @jdm

[hoppipolla-critic-bot]

Critic review: https://critic.hoppipolla.co.uk/r/5521

This is an external review system which you may optionally use for the code review of your pull request.

In order to help critic track your changes, please do not make in-place history rewrites (e.g. via git rebase -i or git commit --amend) when updating this pull request.

[bors-servo]

☔ The latest upstream changes (presumably #6614) made this pull request unmergeable. Please resolve the merge conflicts.

[jdm]

-S-awaiting-review +S-needs-code-changes

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Reviewed 33 of 33 files at r1.
Review status: all files reviewed at latest revision, 2 unresolved discussions, some commit checks failed.

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^{components/msg/Cargo.toml, line 37 [r1] (raw file):}
Let's go back to the cargo version.

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^{components/msg/Cargo.toml, line 41 [r1] (raw file):}
Let's go back to the cargo version.

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Comments from the review on Reviewable.io

[pcwalton]

Fixed. r? @jdm

Note that this is currently blocked on serde: serde-rs/serde#102

[jdm]

-S-awaiting-review +S-blocked-on-external

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Reviewed 21 of 21 files at r2.
Review status: all files reviewed at latest revision, all discussions resolved, all commit checks successful.

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Comments from the review on Reviewable.io

[bors-servo]

☔ The latest upstream changes (presumably #6596) made this pull request unmergeable. Please resolve the merge conflicts.

[pcwalton]

Rebased. Still blocked on @erickt reviewing serde-rs/serde#102

[bors-servo]

☔ The latest upstream changes (presumably #6583) made this pull request unmergeable. Please resolve the merge conflicts.

[erickt]

@pcwalton: I merged in your PR. Do you need a release cut for this as well?

[jdm]

-S-awaiting-review -S-blocked-on-external +S-needs-rebase

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Reviewed 21 of 21 files at r2, 19 of 19 files at r3.
Review status: all files reviewed at latest revision, all discussions resolved, some commit checks failed.

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Comments from the review on Reviewable.io

[pcwalton]

@bors-servo: r=jdm

[bors-servo]

📌 Commit 59d9c4f has been approved by jdm

[bors-servo]

⌛ Testing commit 59d9c4f with merge 7ad6dd8...

[bors-servo]

💔 Test failed - mac3

[pcwalton]

@bors-servo: retry

Network failure

[bors-servo]

⚡ Previous build results for android, gonk are reusable. Rebuilding only linux1, linux2, linux3, mac1, mac2, mac3...

[bors-servo]

💔 Test failed - linux2

[pcwalton]

OK, that's odd. A URL parsing test case no longer fails. Perhaps the fact that we serialize URLs via strings between the constellation and the rest of Servo has caused this?

[pcwalton]

@bors-servo: r=jdm

[bors-servo]

📌 Commit b6485a9 has been approved by jdm

[bors-servo]

⌛ Testing commit b6485a9 with merge 2f4bdc6...

[bors-servo]

☀️ Test successful - android, gonk, linux1, linux2, linux3, mac1, mac2, mac3

[jdm]

It's a project build file: see http://doc.crates.io/manifest.html and https://github.com/toml-lang/toml