4cc90fcf6a
in CI, we specify the rust version as 1.70.0...
```yaml
on: [push, pull_request]
env:
RUST_VERSION: 1.70.0
```
likewise, the package manifest pins the rust version...
```toml
rust-version = "1.70.0"
```
..but this version is not pinned by cargo, via a `rust-toolchain`. this
means that testing this project using the stable toolchain by default
(_at time of writing, this is 1.78.0_) will see test failures due to
error messages not matching the expected snapshots, due to `rustc`
itself making changes to its diagnostics:
```
test tests/fail/snapshot_outlive_db.rs ... mismatch
EXPECTED:
┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
error[E0597]: `db` does not live long enough
--> tests/fail/snapshot_outlive_db.rs:6:9
|
4 | let _snapshot = {
| --------- borrow later stored here
5 | let db = DB::open_default("foo").unwrap();
| -- binding `db` declared here
6 | db.snapshot()
| ^^^^^^^^^^^^^ borrowed value does not live long enough
7 | };
| - `db` dropped here while still borrowed
┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
ACTUAL OUTPUT:
┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
error[E0597]: `db` does not live long enough
--> tests/fail/snapshot_outlive_db.rs:6:9
|
4 | let _snapshot = {
| --------- borrow later stored here
5 | let db = DB::open_default("foo").unwrap();
| -- binding `db` declared here
6 | db.snapshot()
| ^^ borrowed value does not live long enough
7 | };
| - `db` dropped here while still borrowed
┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
note: If the actual output is the correct output you can bless it by rerunning
your test with the environment variable TRYBUILD=overwrite
```
this commit introduces a `rust-toolchain.toml` file so that the correct
version of rust is used by those building or contributing to this
project.
2 lines
31 B
TOML
2 lines
31 B
TOML
[toolchain]
|
|
channel = "1.70.0"
|