error: Unsupported shape `enum`. Expected struct with no fields.
 --> tests/map/failure.rs:2:1
  |
2 | / #[smear::hashmap(
3 | |   key(String),
4 | |   value(String)
5 | | )]
  | |__^
  |
  = note: this error originates in the attribute macro `smear::hashmap` (in Nightly builds, run with -Z macro-backtrace for more info)

error: Unsupported shape `unnamed fields`. Expected no fields.
  --> tests/map/failure.rs:11:1
   |
11 | / #[smear::btreemap(
12 | |   key(String),
13 | |   value(String)
14 | | )]
   | |__^
   |
   = note: this error originates in the attribute macro `smear::btreemap` (in Nightly builds, run with -Z macro-backtrace for more info)

error: Unsupported shape `named fields`. Expected no fields.
  --> tests/map/failure.rs:18:1
   |
18 | / #[smear::hashmap(
19 | |   key = String,
20 | |   value("String"),
21 | |   attributes(derive(Clone))
22 | | )]
   | |__^
   |
   = note: this error originates in the attribute macro `smear::hashmap` (in Nightly builds, run with -Z macro-backtrace for more info)

error: Unsupported shape `one unnamed field`. Expected no fields.
  --> tests/map/failure.rs:28:1
   |
28 | / #[smear::btreemap(
29 | |   key = "String",
30 | |   value(String)
31 | | )]
   | |__^
   |
   = note: this error originates in the attribute macro `smear::btreemap` (in Nightly builds, run with -Z macro-backtrace for more info)