error[E0277]: expected a `FnOnce<(&str,)>` closure, found `core::result::Result<(), _>` --> source/kernel/src/services/sdmmc.rs:196:52 | 196 | self.message.map_or_else(|msg| msg.fmt(f), Ok(())) | ----------- ^^^^^^ expected an `FnOnce<(&str,)>` closure, found `core::result::Result<(), _>` | | | required by a bound introduced by this call | = help: the trait `FnOnce<(&str,)>` is not implemented for `core::result::Result<(), _>` note: required by a bound in `core::option::Option::<T>::map_or_else` --> /home/runner/.rustup/toolchains/nightly-2023-08-08-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:1177:12 | 1174 | pub fn map_or_else<U, D, F>(self, default: D, f: F) -> U | ----------- required by a bound in this associated function ... 1177 | F: FnOnce(T) -> U, | ^^^^^^^^^^^^^^ required by this bound in `Option::<T>::map_or_else`

error[E0277]: expected a `FnOnce<(&str,)>` closure, found `core::result::Result<(), _>` --> source/kernel/src/services/sdmmc.rs:196:52 | 196 | self.message.map_or_else(|msg| msg.fmt(f), Ok(())) | ----------- ^^^^^^ expected an `FnOnce<(&str,)>` closure, found `core::result::Result<(), _>` | | | required by a bound introduced by this call | = help: the trait `FnOnce<(&str,)>` is not implemented for `core::result::Result<(), _>` note: required by a bound in `core::option::Option::<T>::map_or_else` --> /home/runner/.rustup/toolchains/nightly-2023-08-08-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:1177:12 | 1174 | pub fn map_or_else<U, D, F>(self, default: D, f: F) -> U | ----------- required by a bound in this associated function ... 1177 | F: FnOnce(T) -> U, | ^^^^^^^^^^^^^^ required by this bound in `Option::<T>::map_or_else`

error[E0593]: closure is expected to take 0 arguments, but it takes 1 argument --> source/kernel/src/services/sdmmc.rs:196:22 | 196 | self.message.map_or_else(|msg| msg.fmt(f), Ok(())) | ^^^^^^^^^^^ ----- takes 1 argument | | | expected closure that takes 0 arguments

error[E0593]: closure is expected to take 0 arguments, but it takes 1 argument --> source/kernel/src/services/sdmmc.rs:196:22 | 196 | self.message.map_or_else(|msg| msg.fmt(f), Ok(())) | ^^^^^^^^^^^ ----- takes 1 argument | | | expected closure that takes 0 arguments

Process completed with exit code 1.