feat: Use oldest rustup rust-analyzer when toolchain override is present
Selects a rust-toolchain declared RA based on its date. The earliest (oldest) RA wins and becomes the one that the workspace uses as a whole.
In terms of precedence:
nightly > stable-with-version > stable
With stable-with-version, we invoke the RA with a `--version` arg and attempt to extract a date. Given the same date as a nightly, the nightly RA will win.
Fixes#17663
Selects a rust-toolchain declared RA based on its date. The earliest (oldest) RA wins and becomes the one that the workspace uses as a whole.
In terms of precedence:
nightly > stable-with-version > stable
With stable-with-version, we invoke the RA with a `--version` arg and attempt to extract a date. Given the same date as a nightly, the nightly RA will win.
This change updates the log format to use the vscode log format instead
of the custom log format, by replacing the `OutputChannel` with a
`LogOutputChannel` and using the `debug`, `info`, `warn`, and `error`
methods on it. This has the following benefits:
- Each log level now has its own color and the timestamp is in a more
standard format
- Inspect output (e.g. the log of the config object) is now colored
- Error stack traces are now shown in the output
- The log level is now controlled on the output tab by clicking the gear
icon and selecting "Debug" or by passing the `--log` parameter to
vscode. The `trace.extension` setting has been marked as deprecated.
