Crate doesn't compile without default features

[survived]

Steps to reproduce:

Either add the crate into dependencies as:

"vodozemac" = { version = "0.8", default-features = false }

then cargo check returns this compile error:

Error

    Checking vodozemac v0.8.0
error[E0599]: no function or associated item named `new_pickle` found for struct `Cipher` in the current scope
   --> /home/denis/.cargo/registry/src/index.crates.io-6f17d22bba15001f/vodozemac-0.8.0/src/utilities/mod.rs:50:41
    |
50  |     let cipher = crate::cipher::Cipher::new_pickle(pickle_key);
    |                                         ^^^^^^^^^^ function or associated item not found in `Cipher`
    |
   ::: /home/denis/.cargo/registry/src/index.crates.io-6f17d22bba15001f/vodozemac-0.8.0/src/cipher/mod.rs:97:1
    |
97  | pub struct Cipher {
    | ----------------- function or associated item `new_pickle` not found for this struct
    |
note: if you're trying to build a new `Cipher` consider using one of the following associated functions:
      Cipher::new
      Cipher::new_megolm
   --> /home/denis/.cargo/registry/src/index.crates.io-6f17d22bba15001f/vodozemac-0.8.0/src/cipher/mod.rs:110:5
    |
110 |     pub fn new(key: &[u8; 32]) -> Self {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
125 |     pub fn new_megolm(&key: &[u8; 128]) -> Self {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0599]: no function or associated item named `new_pickle` found for struct `Cipher` in the current scope
   --> /home/denis/.cargo/registry/src/index.crates.io-6f17d22bba15001f/vodozemac-0.8.0/src/utilities/mod.rs:65:41
    |
65  |     let cipher = crate::cipher::Cipher::new_pickle(pickle_key);
    |                                         ^^^^^^^^^^ function or associated item not found in `Cipher`
    |
   ::: /home/denis/.cargo/registry/src/index.crates.io-6f17d22bba15001f/vodozemac-0.8.0/src/cipher/mod.rs:97:1
    |
97  | pub struct Cipher {
    | ----------------- function or associated item `new_pickle` not found for this struct
    |
note: if you're trying to build a new `Cipher` consider using one of the following associated functions:
      Cipher::new
      Cipher::new_megolm
   --> /home/denis/.cargo/registry/src/index.crates.io-6f17d22bba15001f/vodozemac-0.8.0/src/cipher/mod.rs:110:5
    |
110 |     pub fn new(key: &[u8; 32]) -> Self {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
125 |     pub fn new_megolm(&key: &[u8; 128]) -> Self {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

For more information about this error, try `rustc --explain E0599`.
error: could not compile `vodozemac` (lib) due to 2 previous errors

or, just checkout 0.8.0 tag:

git checkout 0.8.0
cargo check -p vodozemac --no-default-features

which will produce the same error message:

Error

$ cargo check -p vodozemac --no-default-features
    Checking vodozemac v0.8.0 (/home/denis/Projects/vodozemac)
error[E0599]: no function or associated item named `new_pickle` found for struct `Cipher` in the current scope
   --> src/utilities/mod.rs:50:41
    |
50  |     let cipher = crate::cipher::Cipher::new_pickle(pickle_key);
    |                                         ^^^^^^^^^^ function or associated item not found in `Cipher`
    |
   ::: src/cipher/mod.rs:97:1
    |
97  | pub struct Cipher {
    | ----------------- function or associated item `new_pickle` not found for this struct
    |
note: if you're trying to build a new `Cipher` consider using one of the following associated functions:
      Cipher::new
      Cipher::new_megolm
   --> src/cipher/mod.rs:110:5
    |
110 |     pub fn new(key: &[u8; 32]) -> Self {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
125 |     pub fn new_megolm(&key: &[u8; 128]) -> Self {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0599]: no function or associated item named `new_pickle` found for struct `Cipher` in the current scope
   --> src/utilities/mod.rs:65:41
    |
65  |     let cipher = crate::cipher::Cipher::new_pickle(pickle_key);
    |                                         ^^^^^^^^^^ function or associated item not found in `Cipher`
    |
   ::: src/cipher/mod.rs:97:1
    |
97  | pub struct Cipher {
    | ----------------- function or associated item `new_pickle` not found for this struct
    |
note: if you're trying to build a new `Cipher` consider using one of the following associated functions:
      Cipher::new
      Cipher::new_megolm
   --> src/cipher/mod.rs:110:5
    |
110 |     pub fn new(key: &[u8; 32]) -> Self {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
125 |     pub fn new_megolm(&key: &[u8; 128]) -> Self {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused import: `zeroize::Zeroize`
  --> src/utilities/mod.rs:48:9
   |
48 |     use zeroize::Zeroize;
   |         ^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(unused_imports)]` on by default

For more information about this error, try `rustc --explain E0599`.
warning: `vodozemac` (lib) generated 1 warning
error: could not compile `vodozemac` (lib) due to 2 previous errors; 1 warning emitted

[poljar]

Whops, why wasn't this part of the CI. Oh well, should be fixed by #192.

Thanks for the report.