it compiles with async-imap, remove local dependency

Cargo.toml

@@ -20,7 +20,10 @@ num-derive = "0.2.5"
 num-traits = "0.2.6"
 native-tls = "0.2.3"
 lettre = { git = "https://github.com/deltachat/lettre", branch = "master" }
-imap = { git = "https://github.com/deltachat/rust-imap", branch = "master" }
+# imap = { git = "https://github.com/deltachat/rust-imap", branch = "master" }
+async-imap = { git = "https://github.com/dignifiedquire/async-imap", branch = "master" }
+async-tls = { git = "https://github.com/async-rs/async-tls", branch = "master" }
+async-std = { git = "https://github.com/async-rs/async-std", branch = "master", features = ["unstable"] }
 base64 = "0.10"
 charset = "0.1"
 percent-encoding = "2.0"

rust-toolchain

@@ -1 +1 @@
-nightly-2019-08-13
+nightly-2019-09-12

src/configure/mod.rs

@@ -569,7 +569,7 @@ fn try_smtp_one_param(context: &Context, param: &LoginParam) -> Option<bool> {
 pub fn dc_connect_to_configured_imap(context: &Context, imap: &Imap) -> libc::c_int {
     let mut ret_connected = 0;
 
-    if imap.is_connected() {
+    if async_std::task::block_on(async move { imap.is_connected().await }) {
         ret_connected = 1
     } else if !context.sql.get_raw_config_bool(context, "configured") {
         warn!(context, "Not configured, cannot connect.",);

src/job_thread.rs

@@ -107,7 +107,7 @@ impl JobThread {
     }
 
     fn connect_to_imap(&self, context: &Context) -> bool {
-        if self.imap.is_connected() {
+        if async_std::task::block_on(async move { self.imap.is_connected().await }) {
             return true;
         }