error: generator cannot be sent between threads safely
  --> $DIR/issue-57017.rs:32:25
   |
LL |               assert_send(g);
   |                           ^ generator is not `Send`
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
   |
   = help: the trait `Sync` is not implemented for `copy::unsync::Client`
note: generator is not `Send` as this value is used across a yield
  --> $DIR/issue-57017.rs:30:28
   |
LL |               let g = move || match drop(&$name::unsync::Client::default()) {
   |                                          --------------------------------- has type `&copy::unsync::Client` which is not `Send`
LL |                   _status => yield,
   |                              ^^^^^ yield occurs here, with `&$name::unsync::Client::default()` maybe used later
LL |               };
   |               - `&$name::unsync::Client::default()` is later dropped here
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
note: required by a bound in `assert_send`
  --> $DIR/issue-57017.rs:52:19
   |
LL | fn assert_send<T: Send>(_thing: T) {}
   |                   ^^^^ required by this bound in `assert_send`
   = note: this error originates in the macro `type_combinations` (in Nightly builds, run with -Z macro-backtrace for more info)

error: generator cannot be sent between threads safely
  --> $DIR/issue-57017.rs:44:25
   |
LL |               assert_send(g);
   |                           ^ generator is not `Send`
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
   |
   = help: within `[generator@$DIR/issue-57017.rs:41:21: 41:28]`, the trait `Send` is not implemented for `copy::unsend::Client`
note: generator is not `Send` as this value is used across a yield
  --> $DIR/issue-57017.rs:42:28
   |
LL |               let g = move || match drop($name::unsend::Client::default()) {
   |                                          -------------------------------- has type `copy::unsend::Client` which is not `Send`
LL |                   _status => yield,
   |                              ^^^^^ yield occurs here, with `$name::unsend::Client::default()` maybe used later
LL |               };
   |               - `$name::unsend::Client::default()` is later dropped here
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
note: required by a bound in `assert_send`
  --> $DIR/issue-57017.rs:52:19
   |
LL | fn assert_send<T: Send>(_thing: T) {}
   |                   ^^^^ required by this bound in `assert_send`
   = note: this error originates in the macro `type_combinations` (in Nightly builds, run with -Z macro-backtrace for more info)

error: generator cannot be sent between threads safely
  --> $DIR/issue-57017.rs:32:25
   |
LL |               assert_send(g);
   |                           ^ generator is not `Send`
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
   |
   = help: the trait `Sync` is not implemented for `derived_drop::unsync::Client`
note: generator is not `Send` as this value is used across a yield
  --> $DIR/issue-57017.rs:30:28
   |
LL |               let g = move || match drop(&$name::unsync::Client::default()) {
   |                                          --------------------------------- has type `&derived_drop::unsync::Client` which is not `Send`
LL |                   _status => yield,
   |                              ^^^^^ yield occurs here, with `&$name::unsync::Client::default()` maybe used later
LL |               };
   |               - `&$name::unsync::Client::default()` is later dropped here
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
note: required by a bound in `assert_send`
  --> $DIR/issue-57017.rs:52:19
   |
LL | fn assert_send<T: Send>(_thing: T) {}
   |                   ^^^^ required by this bound in `assert_send`
   = note: this error originates in the macro `type_combinations` (in Nightly builds, run with -Z macro-backtrace for more info)

error: generator cannot be sent between threads safely
  --> $DIR/issue-57017.rs:44:25
   |
LL |               assert_send(g);
   |                           ^ generator is not `Send`
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
   |
   = help: within `[generator@$DIR/issue-57017.rs:41:21: 41:28]`, the trait `Send` is not implemented for `derived_drop::unsend::Client`
note: generator is not `Send` as this value is used across a yield
  --> $DIR/issue-57017.rs:42:28
   |
LL |               let g = move || match drop($name::unsend::Client::default()) {
   |                                          -------------------------------- has type `derived_drop::unsend::Client` which is not `Send`
LL |                   _status => yield,
   |                              ^^^^^ yield occurs here, with `$name::unsend::Client::default()` maybe used later
LL |               };
   |               - `$name::unsend::Client::default()` is later dropped here
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
note: required by a bound in `assert_send`
  --> $DIR/issue-57017.rs:52:19
   |
LL | fn assert_send<T: Send>(_thing: T) {}
   |                   ^^^^ required by this bound in `assert_send`
   = note: this error originates in the macro `type_combinations` (in Nightly builds, run with -Z macro-backtrace for more info)

error: generator cannot be sent between threads safely
  --> $DIR/issue-57017.rs:32:25
   |
LL |               assert_send(g);
   |                           ^ generator is not `Send`
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
   |
   = help: the trait `Sync` is not implemented for `significant_drop::unsync::Client`
note: generator is not `Send` as this value is used across a yield
  --> $DIR/issue-57017.rs:30:28
   |
LL |               let g = move || match drop(&$name::unsync::Client::default()) {
   |                                          --------------------------------- has type `&significant_drop::unsync::Client` which is not `Send`
LL |                   _status => yield,
   |                              ^^^^^ yield occurs here, with `&$name::unsync::Client::default()` maybe used later
LL |               };
   |               - `&$name::unsync::Client::default()` is later dropped here
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
note: required by a bound in `assert_send`
  --> $DIR/issue-57017.rs:52:19
   |
LL | fn assert_send<T: Send>(_thing: T) {}
   |                   ^^^^ required by this bound in `assert_send`
   = note: this error originates in the macro `type_combinations` (in Nightly builds, run with -Z macro-backtrace for more info)

error: generator cannot be sent between threads safely
  --> $DIR/issue-57017.rs:44:25
   |
LL |               assert_send(g);
   |                           ^ generator is not `Send`
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
   |
   = help: within `[generator@$DIR/issue-57017.rs:41:21: 41:28]`, the trait `Send` is not implemented for `significant_drop::unsend::Client`
note: generator is not `Send` as this value is used across a yield
  --> $DIR/issue-57017.rs:42:28
   |
LL |               let g = move || match drop($name::unsend::Client::default()) {
   |                                          -------------------------------- has type `significant_drop::unsend::Client` which is not `Send`
LL |                   _status => yield,
   |                              ^^^^^ yield occurs here, with `$name::unsend::Client::default()` maybe used later
LL |               };
   |               - `$name::unsend::Client::default()` is later dropped here
...
LL | /     type_combinations!(
LL | |         copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
LL | |         derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
LL | |         significant_drop => {
...  |
LL | |         }
LL | |     );
   | |_____- in this macro invocation
note: required by a bound in `assert_send`
  --> $DIR/issue-57017.rs:52:19
   |
LL | fn assert_send<T: Send>(_thing: T) {}
   |                   ^^^^ required by this bound in `assert_send`
   = note: this error originates in the macro `type_combinations` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 6 previous errors