Eliza Weisman f992361eec
chore: update github actions MSRV; fix broken examples (#463)
## Motivation

PR #441 increased the minimum supported Rust version, but it only
changed the Azure Pipelines CI configuration, and not the GitHub Actions
one. Additionally, upstream changes to `tower` has broken some of the
examples.

## Solution

This branch bumps the MSRV on GitHub Actions as well, and comments
out examples that depend on code broken upstream. 

Additionally, it turns out that — due to Cool Cargo Semver Reasons —
it's more or less impossible to depend on both tokio 0.2.0-alpha.6 *and*
tokio 0.2 release versions. This branch therefore just drops the 0.2.0-alpha.6
support; the next `tracing-futures` will be a breaking change anyway.

Co-authored-by: David Barsky <me@davidbarsky.com>
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
2019-12-08 11:37:14 -08:00
..