Pin log crate to 0.4.18

This is temporary measure, as the problem cannot be solved cleanly right
now.

The issue is that the msrv check uses the stable compiler, which uses a
stable cargo. With a stable cargo, the unstable `build-std` option is
not respected within `.cargo/config.toml`. This means `core` is never
rebuilt with the atomic cfg flags so we get this error when building log
version 0.4.19. The 0.4.19 release uses the atomic cfg flags instead of
a custom build script, so by switching back to 0.4.188888888 we can avoid this
issue... for now at least.

CHANGELOG.md

@@ -63,6 +63,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - ESP32-C3: Fix GPIO5 ADC channel id (#562)
 - ESP32-H2: Fix direct-boot feature
 - ESP32-C6: Support FOSC CLK calibration for ECO1+ chip revisions
+- Fixed CI by pinning the log crate to 0.4.18 (#600)
 
 ### Changed
 

esp-hal-common/Cargo.toml

@@ -22,7 +22,7 @@ embedded-hal-1       = { version = "=1.0.0-alpha.10", optional = true, package =
 embedded-hal-nb      = { version = "=1.0.0-alpha.2", optional = true }
 esp-synopsys-usb-otg = { version = "0.3.1", optional = true, features = ["fs", "esp32sx"] }
 fugit                = "0.3.6"
-log                  = "0.4.17"
+log                  = "=0.4.18"
 lock_api             = { version = "0.4.9", optional = true }
 nb                   = "1.1.0"
 paste                = "1.0.12"