diff --git a/ci/runtests.sh b/ci/runtests.sh
index 405c0f6..9513526 100755
--- a/ci/runtests.sh
+++ b/ci/runtests.sh
@@ -18,8 +18,8 @@ cargo check --all-targets --locked
 cargo clippy --all-targets
 
 # stable, std
-cargo build --release --features mctp-estack/log
-cargo test --features mctp-estack/log
+cargo build --release
+cargo test
 
 # stable, no_std
 NOSTD_CRATES="mctp pldm pldm-fw"
@@ -44,6 +44,6 @@ cargo build --target thumbv7em-none-eabihf --features defmt --no-default-feature
 cargo build --features log
 )
 
-cargo doc --features mctp-estack/log
+cargo doc
 
 echo success
diff --git a/mctp-estack/src/lib.rs b/mctp-estack/src/lib.rs
index 6034703..cbf1c8a 100644
--- a/mctp-estack/src/lib.rs
+++ b/mctp-estack/src/lib.rs
@@ -45,6 +45,11 @@ use heapless::FnvIndexMap;
 
 use mctp::{Eid, Error, MsgIC, MsgType, Result, Tag, TagValue};
 
+#[cfg(not(any(feature = "log", feature = "defmt")))]
+compile_error!("Either log or defmt feature must be enabled");
+#[cfg(all(feature = "log", feature = "defmt"))]
+compile_error!("log and defmt features are mutually exclusive");
+
 pub mod control;
 pub mod fragment;
 pub mod i2c;
@@ -733,9 +738,6 @@ impl EventStamp {
     }
 }
 
-#[cfg(not(any(feature = "log", feature = "defmt")))]
-compile_error!("Either log or defmt feature must be enabled");
-
 pub(crate) mod fmt {
     #[cfg(feature = "defmt")]
     pub use defmt::{debug, error, info, trace, warn};
diff --git a/mctp-usb-embassy/src/mctpusb.rs b/mctp-usb-embassy/src/mctpusb.rs
index e0ca4c6..401b62f 100644
--- a/mctp-usb-embassy/src/mctpusb.rs
+++ b/mctp-usb-embassy/src/mctpusb.rs
@@ -12,6 +12,8 @@ use log::{debug, error, info, trace, warn};
 
 #[cfg(not(any(feature = "log", feature = "defmt")))]
 compile_error!("Either log or defmt feature must be enabled");
+#[cfg(all(feature = "log", feature = "defmt"))]
+compile_error!("log and defmt features are mutually exclusive");
 
 use core::ops::Range;
 
diff --git a/mctp/src/lib.rs b/mctp/src/lib.rs
index 829d15a..7eaf6f6 100644
--- a/mctp/src/lib.rs
+++ b/mctp/src/lib.rs
@@ -18,6 +18,11 @@
 
 use core::future::Future;
 
+// Currently there is no defmt::Format implementation for std::io::Error
+// (can't be derived). If needed that could be manually implemented.
+#[cfg(all(feature = "std", feature = "defmt"))]
+compile_error!("std and defmt features are currently mutually exclusive");
+
 /// MCTP endpoint ID
 #[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]