Please upgrade the dependency 'rustls-platform-verifier' version, as it may not compile.

[elsejj]

rustls-platform-verifier 0.4 may break compile.
please upgrade to 0.5, thanks

error[E0277]: the trait bound `webpki::Error: std::error::Error` is not satisfied
   --> /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rustls-platform-verifier-0.4.0/src/verification/others.rs:234:40
    |
234 |             other_err.0.downcast_ref::<webpki::Error>()
    |                         ------------   ^^^^^^^^^^^^^ the trait `std::error::Error` is not implemented for `webpki::Error`
    |                         |
    |                         required by a bound introduced by this call
    |
note: required by a bound in `<(dyn std::error::Error + Send + Sync + 'static)>::downcast_ref`
   --> /rustc/4eb161250e340c8f48f66e2b929ef4a5bed7c181/library/core/src/error.rs:271:5

For more information about this error, try `rustc --explain E0277`.
error: could not compile `rustls-platform-verifier` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish...

[nan-mu]

same question
due to this, cargo install himalaya fail

[soywod]

The upgrade is planned but not for now, meanwhile you can cargo install --locked.

[nan-mu]

maybe you have see, you can only use:

diff --git a/Cargo.toml b/Cargo.toml
index e1c9e5d..29c14c5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,7 +32,7 @@ tokio = { version = "1.37", features = ["full"] }
 [dependencies]
 imap-next = { version = "0.3", features = ["tag_generator", "ext_id", "ext_metadata"] }
 rip-starttls = { version = "0.1", optional = true, features = ["tokio"] }
-rustls-platform-verifier = { version = "0.4", optional = true }
+rustls-platform-verifier = { version = "0.5", optional = true }
 thiserror = "2"
 tokio = { version = "1.37", default-features = false, features = ["io-util", "net", "time"] }
 tokio-native-tls = { version = "0.3", optional = true }

It works for me and I briefly checked the code
so I suggest you include this change in your next commit

[jonassmedegaard]

Until this project has been refactored, others might find use of the patch we carry for the Debian packaging of this crate:

Description: use newer minor version of crate rustls-platform-verifier
Author: Jonas Smedegaard <dr@jones.dk>
Last-Update: 2025-10-04
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,7 +32,7 @@
 [dependencies]
 imap-next = { version = "0.3", features = ["tag_generator", "ext_id", "ext_metadata"] }
 rip-starttls = { version = "0.1", optional = true, features = ["tokio"] }
-rustls-platform-verifier = { version = "0.4", optional = true }
+rustls-platform-verifier = { version = "0.6", optional = true }
 thiserror = "2"
 tokio = { version = "1.37", default-features = false, features = ["io-util", "net", "time"] }
 tokio-native-tls = { version = "0.3", optional = true }
--- a/src/client/tokio.rs
+++ b/src/client/tokio.rs
@@ -276,7 +276,7 @@
                 .map_err(ClientError::DoStarttlsPrefixError)?;
         }
 
-        let mut config = ClientConfig::with_platform_verifier();
+        let mut config = ClientConfig::with_platform_verifier().expect("Failed to load TLS certificates");
 
         // See <https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml#alpn-protocol-ids>
         config.alpn_protocols = vec![b"imap".to_vec()];