update omicron-common and other dependencies (#1778)

In order to make Crucible APIs versioned, we need to pull in a
definition recently added to omicron-common:
[`omicron_common::api::VERSION_HEADER`](https://github.com/oxidecomputer/omicron/blame/4d5bdc6d348b27761348d763c4085f060bcefc18/common/src/api/mod.rs#L10-L12).

This ended up being a pretty large yak shave:

* had to update Rust version
* then, had to fix up all the new lint warnings

Author: sunshowers

.cargo/config.toml

@@ -6,4 +6,6 @@ xtask = "run --package xtask --"
 #
 # Once https://github.com/rust-lang/cargo/issues/12115 makes it to our
 # toolchain, we'll be able to put this in the `Cargo.toml` manifest instead.
-rustflags = ["-Wclippy::unused-async"]
+#
+# Also enable the `tokio-unstable` config for `tokio-dtrace` probes.
+rustflags = ["-Wclippy::unused-async", "--cfg", "tokio_unstable"]

.github/buildomat/jobs/build-release.sh

@@ -67,6 +67,9 @@ pfexec coreadm -i /tmp/core.%f.%p \
  -e log \
  -e proc-setid \
  -e global-setid
+ 
+banner prerequisites
+ptime -m ./tools/install_builder_prerequisites.sh -y
 
 banner rbuild
 ptime -m cargo build --verbose --release --all-features

.github/buildomat/jobs/build.sh

@@ -27,6 +27,9 @@ pfexec coreadm -i /tmp/core.%f.%p \
  -e proc-setid \
  -e global-setid
 
+banner prerequisites
+ptime -m ./tools/install_builder_prerequisites.sh -y
+
 banner build
 ptime -m cargo build --verbose --all-features