diff --git a/src/tools/io.rs b/src/tools/io.rs
index 653d479f..f5c390dd 100644
--- a/src/tools/io.rs
+++ b/src/tools/io.rs
@@ -7,7 +7,7 @@
 //! implementing `AsyncRead`, which, however, without async/await cannot be methods due to them
 //! having non-static lifetimes in that case.
 //!
-//! ```
+//! ```ignore
 //! use std::io;
 //!
 //! use crate::tools::io::read_exact_allocated;
@@ -23,8 +23,8 @@
 //!             tokio::io::read_exact(file, unsafe { buffer.grow_uninitialized(1024) })
 //!         })
 //!         .and_then(|(_file, bigger_buffer)| {
-//!             use_the(bigger_buffer);
-//!             Ok(bigger_buffer)
+//!             // use bigger_buffer
+//!             Ok(())
 //!         });
 //! }
 //!
@@ -55,11 +55,14 @@ pub mod ops;
 ///
 /// Example:
 /// ```
+/// # use futures::future::Future;
+/// # use proxmox_backup::tools::io::*;
 /// tokio::fs::File::open("some.file")
 ///     .and_then(|file| read_exact_allocated(file, 1024))
 ///     .and_then(|(_file, data)| {
-///         use_the(data);
-///     })
+///         // use data
+///         Ok(())
+///     });
 /// ```
 pub fn read_exact_allocated<R: AsyncRead>(reader: R, size: usize) -> ReadExactAllocated<R> {
     ReadExactAllocated(Some(reader), None, size)
@@ -121,13 +124,16 @@ impl<R: AsyncRead> Future for ReadExactAllocated<R> {
 ///
 /// Example:
 /// ```
+/// # use futures::future::Future;
+/// # use proxmox_backup::tools::io::*;
 /// tokio::fs::File::open("some.file")
 ///     .and_then(|file| append_to_vec(file, Vec::new(), 1024))
 ///     .and_then(|(_file, data, size)| {
 ///         assert!(data.len() == size);
 ///         println!("Actually got {} bytes of data.", size);
-///         use_the(data);
-///     })
+///         // use the data
+///         Ok(())
+///     });
 /// ```
 pub fn append_to_vec<R, V>(reader: R, mut vector: V, size: usize) -> AppendToVec<R, V>
 where
@@ -188,13 +194,15 @@ where
 ///
 /// Example:
 /// ```
+/// # use futures::future::Future;
+/// # use proxmox_backup::tools::io::*;
 /// tokio::fs::File::open("some.file")
 ///     .and_then(|file| append_exact_to_vec(file, Vec::new(), 1024))
 ///     .and_then(|(_file, data)| {
-///         assert!(data.len() == size);
-///         println!("Actually got {} bytes of data.", size);
-///         use_the(data);
-///     })
+///         assert!(data.len() == 1024);
+///         // use data
+///         Ok(())
+///     });
 /// ```
 pub fn append_exact_to_vec<R, V>(reader: R, mut vector: V, size: usize) -> AppendExactToVec<R, V>
 where
diff --git a/src/tools/io/ops.rs b/src/tools/io/ops.rs
index aaebbd86..39d4772e 100644
--- a/src/tools/io/ops.rs
+++ b/src/tools/io/ops.rs
@@ -15,22 +15,28 @@ use crate::tools::vec::{self, ops::*};
 /// values of a specific endianess (types implementing [`Endian`]).
 ///
 /// Examples:
-/// ```
-/// use crate::tools::io::ops::*;
+/// ```no_run
+/// use proxmox_backup::tools::io::ops::*;
 ///
+/// # fn code() -> std::io::Result<()> {
 /// let mut file = std::fs::File::open("some.data")?;
 ///
 /// // read some bytes into a newly allocated Vec<u8>:
-/// let mut data = file.read_exact_allocated(header.data_size as usize)?;
+/// let mut data = file.read_exact_allocated(64)?;
 ///
 /// // appending data to a vector:
-/// let actually_appended = file.append_to_vec(&mut data, length)?; // .read() version
-/// file.append_exact_to_vec(&mut data, length)?; // .read_exact() version
+/// let actually_appended = file.append_to_vec(&mut data, 64)?; // .read() version
+/// file.append_exact_to_vec(&mut data, 64)?; // .read_exact() version
+/// # Ok(())
+/// # }
 /// ```
 ///
 /// Or for reading values of a defined representation and endianess:
 ///
-/// ```
+/// ```no_run
+/// # use endian_trait::Endian;
+/// # use proxmox_backup::tools::io::ops::*;
+///
 /// #[derive(Endian)]
 /// #[repr(C)]
 /// struct Header {
@@ -38,15 +44,18 @@ use crate::tools::vec::{self, ops::*};
 ///     data_size: u16,
 /// }
 ///
+/// # fn code(mut file: std::fs::File) -> std::io::Result<()> {
 /// // We have given `Header` a proper binary representation via `#[repr]`, so this is safe:
 /// let header: Header = unsafe { file.read_le_value()? };
 /// let mut blob = file.read_exact_allocated(header.data_size as usize)?;
+/// # Ok(())
+/// # }
 /// ```
 ///
 /// [`Endian`]: https://docs.rs/endian_trait/0.6/endian_trait/trait.Endian.html
 pub trait ReadExtOps {
     /// Read data into a newly allocated vector. This is a shortcut for:
-    /// ```
+    /// ```ignore
     /// let mut data = Vec::with_capacity(len);
     /// unsafe {
     ///     data.set_len(len);
@@ -55,10 +64,12 @@ pub trait ReadExtOps {
     /// ```
     ///
     /// With this trait, we just use:
-    /// ```
-    /// use crate::tools::vec::ops::*;
-    ///
-    /// let data = reader.read_exact_allocated(len);
+    /// ```no_run
+    /// use proxmox_backup::tools::io::ops::*;
+    /// # fn code(mut reader: std::fs::File, len: usize) -> std::io::Result<()> {
+    /// let data = reader.read_exact_allocated(len)?;
+    /// # Ok(())
+    /// # }
     /// ```
     fn read_exact_allocated(&mut self, size: usize) -> io::Result<Vec<u8>>;
 
@@ -76,8 +87,9 @@ pub trait ReadExtOps {
     /// There's no way to directly depend on a type having a specific `#[repr(...)]`, therefore
     /// this is considered unsafe.
     ///
-    /// ```
-    /// use crate::tools::vec::ops::*;
+    /// ```no_run
+    /// # use endian_trait::Endian;
+    /// use proxmox_backup::tools::io::ops::*;
     ///
     /// #[derive(Endian)]
     /// #[repr(C, packed)]
@@ -86,10 +98,13 @@ pub trait ReadExtOps {
     ///     count: u32,
     /// }
     ///
+    /// # fn code() -> std::io::Result<()> {
     /// let mut file = std::fs::File::open("my-raw.dat")?;
     /// // We know `Data` has a safe binary representation (#[repr(C, packed)]), so we can
     /// // safely use our helper:
     /// let data: Data = unsafe { file.read_host_value()? };
+    /// # Ok(())
+    /// # }
     /// ```
     ///
     /// [`Endian`]: https://docs.rs/endian_trait/0.6/endian_trait/trait.Endian.html
@@ -104,8 +119,9 @@ pub trait ReadExtOps {
     /// There's no way to directly depend on a type having a specific `#[repr(...)]`, therefore
     /// this is considered unsafe.
     ///
-    /// ```
-    /// use crate::tools::vec::ops::*;
+    /// ```no_run
+    /// # use endian_trait::Endian;
+    /// use proxmox_backup::tools::io::ops::*;
     ///
     /// #[derive(Endian)]
     /// #[repr(C, packed)]
@@ -114,10 +130,13 @@ pub trait ReadExtOps {
     ///     count: u32,
     /// }
     ///
+    /// # fn code() -> std::io::Result<()> {
     /// let mut file = std::fs::File::open("my-little-endian.dat")?;
     /// // We know `Data` has a safe binary representation (#[repr(C, packed)]), so we can
     /// // safely use our helper:
     /// let data: Data = unsafe { file.read_le_value()? };
+    /// # Ok(())
+    /// # }
     /// ```
     ///
     /// [`Endian`]: https://docs.rs/endian_trait/0.6/endian_trait/trait.Endian.html
@@ -132,8 +151,9 @@ pub trait ReadExtOps {
     /// There's no way to directly depend on a type having a specific `#[repr(...)]`, therefore
     /// this is considered unsafe.
     ///
-    /// ```
-    /// use crate::tools::vec::ops::*;
+    /// ```no_run
+    /// # use endian_trait::Endian;
+    /// use proxmox_backup::tools::io::ops::*;
     ///
     /// #[derive(Endian)]
     /// #[repr(C, packed)]
@@ -142,10 +162,13 @@ pub trait ReadExtOps {
     ///     count: u32,
     /// }
     ///
+    /// # fn code() -> std::io::Result<()> {
     /// let mut file = std::fs::File::open("my-big-endian.dat")?;
     /// // We know `Data` has a safe binary representation (#[repr(C, packed)]), so we can
     /// // safely use our helper:
     /// let data: Data = unsafe { file.read_be_value()? };
+    /// # Ok(())
+    /// # }
     /// ```
     ///
     /// [`Endian`]: https://docs.rs/endian_trait/0.6/endian_trait/trait.Endian.html
diff --git a/src/tools/vec.rs b/src/tools/vec.rs
index 6cdf0402..cde34552 100644
--- a/src/tools/vec.rs
+++ b/src/tools/vec.rs
@@ -1,7 +1,7 @@
 //! Byte vector helpers.
 //!
 //! We have a lot of I/O code such as:
-//! ```
+//! ```ignore
 //! let mut buffer = vec![0u8; header_size];
 //! file.read_exact(&mut buffer)?;
 //! ```
@@ -16,16 +16,18 @@
 //! in the [`tools::io`](crate::tools::io) module.
 //!
 //! Examples:
-//! ```
-//! use crate::tools::vec::{self, ops::*};
+//! ```no_run
+//! use proxmox_backup::tools::vec::{self, ops::*};
 //!
+//! # let size = 64usize;
+//! # let more = 64usize;
 //! let mut buffer = vec::undefined(size); // A zero-initialized buffer with valgrind support
 //!
 //! let mut buffer = unsafe { vec::uninitialized(size) }; // an actually uninitialized buffer
 //! vec::clear(&mut buffer); // zero out an &mut [u8]
 //!
 //! vec::clear(unsafe {
-//!     buffer.grow_unintialized(more); // grow the buffer with uninitialized bytes
+//!     buffer.grow_uninitialized(more) // grow the buffer with uninitialized bytes
 //! });
 //! ```
 
@@ -34,8 +36,9 @@ pub mod ops;
 /// Create an uninitialized byte vector of a specific size.
 ///
 /// This is just a shortcut for:
-/// ```
-/// let mut v = Vec::with_capacity(len);
+/// ```no_run
+/// # let len = 64usize;
+/// let mut v = Vec::<u8>::with_capacity(len);
 /// unsafe {
 ///     v.set_len(len);
 /// }
diff --git a/src/tools/vec/ops.rs b/src/tools/vec/ops.rs
index 38b2f38a..8b3f3ba0 100644
--- a/src/tools/vec/ops.rs
+++ b/src/tools/vec/ops.rs
@@ -2,9 +2,10 @@
 //!
 //! Example:
 //! ```
-//! use crate::tools::vec::{self, ops::*};
+//! # use std::io::Read;
+//! use proxmox_backup::tools::vec::{self, ops::*};
 //!
-//! fn append_1024_to_vec<T: Read>(input: T, buffer: &mut Vec<u8>) -> std::io::Result<()> {
+//! fn append_1024_to_vec<T: Read>(mut input: T, buffer: &mut Vec<u8>) -> std::io::Result<()> {
 //!     input.read_exact(unsafe { buffer.grow_uninitialized(1024) })
 //! }
 //! ```
@@ -12,19 +13,22 @@
 /// Some additional byte vector operations useful for I/O code.
 /// Example:
 /// ```
-/// use crate::tools::vec::{self, ops::*};
+/// # use std::io::Read;
+/// # use proxmox_backup::tools::io::{self, ops::*};
+/// use proxmox_backup::tools::vec::{self, ops::*};
 ///
-/// let mut data = file.read_exact_allocated(1024)?;
-/// do_something();
+/// # fn code(mut file: std::fs::File, mut data: Vec<u8>) -> std::io::Result<()> {
 /// file.read_exact(unsafe {
-///     data.grow_uninitialized(1024);
+///     data.grow_uninitialized(1024)
 /// })?;
+/// # Ok(())
+/// # }
 /// ```
 ///
 /// Note that this module also provides a safe alternative for the case where
 /// `grow_uninitialized()` is directly followed by a `read_exact()` call via the [`ReadExtOps`]
 /// trait:
-/// ```
+/// ```ignore
 /// file.append_to_vec(&mut data, 1024)?;
 /// ```
 ///
@@ -35,7 +39,7 @@ pub trait VecU8ExtOps {
     /// slice.
     ///
     /// This is a shortcut for:
-    /// ```
+    /// ```ignore
     /// vec.reserve(more);
     /// let total = vec.len() + more;
     /// unsafe {
@@ -45,12 +49,17 @@ pub trait VecU8ExtOps {
     ///
     /// This returns a mutable slice to the newly allocated space, so it can be used inline:
     /// ```
+    /// # use std::io::Read;
+    /// # use proxmox_backup::tools::vec::ops::*;
+    /// # fn test(mut file: std::fs::File, buffer: &mut Vec<u8>) -> std::io::Result<()> {
     /// file.read_exact(unsafe { buffer.grow_uninitialized(1024) })?;
+    /// # Ok(())
+    /// # }
     /// ```
     ///
     /// Although for the above case it is recommended to use the even shorter version from the
     /// [`ReadExtOps`] trait:
-    /// ```
+    /// ```ignore
     /// // use crate::tools::vec::ops::ReadExtOps;
     /// file.append_to_vec(&mut buffer, 1024)?;
     /// ```
@@ -59,7 +68,7 @@ pub trait VecU8ExtOps {
     unsafe fn grow_uninitialized(&mut self, more: usize) -> &mut [u8];
 
     /// Resize a vector to a specific size without initializing its data. This is a shortcut for:
-    /// ```
+    /// ```ignore
     /// if new_size <= vec.len() {
     ///     vec.truncate(new_size);
     /// } else {