Bump Rust version to 1.94 (#51086)

Closes #ISSUE

Before you mark this PR as ready for review, make sure that you have:
- [ ] Added a solid test coverage and/or screenshots from doing manual
testing
- [ ] Done a self-review taking into account security and performance
aspects
- [ ] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- N/A

Dockerfile-collab

@@ -1,6 +1,6 @@
 # syntax = docker/dockerfile:1.2
 
-FROM rust:1.93-bookworm as builder
+FROM rust:1.94-bookworm as builder
 WORKDIR app
 COPY . .
 

crates/dap/src/client.rs

@@ -284,6 +284,7 @@ mod tests {
 
     #[gpui::test]
     pub async fn test_initialize_client(cx: &mut TestAppContext) {
+        #![expect(clippy::result_large_err)]
         init_test(cx);
 
         let client = DebugAdapterClient::start(

crates/debugger_ui/src/tests/attach_modal.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use crate::{
     attach_modal::{Candidate, ModalIntent},
     tests::start_debug_session_with,

crates/debugger_ui/src/tests/console.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use crate::{
     tests::{active_debug_session_panel, start_debug_session},
     *,

crates/debugger_ui/src/tests/dap_logger.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use crate::tests::{init_test, init_test_workspace, start_debug_session};
 use dap::requests::{StackTrace, Threads};
 use debugger_tools::LogStore;

crates/debugger_ui/src/tests/debugger_panel.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use crate::{
     persistence::DebuggerPaneItem,
     tests::{start_debug_session, start_debug_session_with},

crates/debugger_ui/src/tests/inline_values.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use std::{path::Path, sync::Arc};
 
 use dap::{Scope, StackFrame, Variable, requests::Variables};

crates/debugger_ui/src/tests/module_list.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use crate::{
     debugger_panel::DebugPanel,
     persistence::DebuggerPaneItem,

crates/debugger_ui/src/tests/new_process_modal.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use dap::DapRegistry;
 use editor::Editor;
 use gpui::{BackgroundExecutor, TestAppContext, VisualTestContext};

crates/debugger_ui/src/tests/persistence.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use std::iter::zip;
 
 use crate::{

crates/debugger_ui/src/tests/stack_frame_list.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use crate::{
     debugger_panel::DebugPanel,
     session::running::stack_frame_list::{

crates/debugger_ui/src/tests/variable_list.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use std::sync::{
     Arc,
     atomic::{AtomicBool, Ordering},

crates/eval_cli/Dockerfile

@@ -7,12 +7,12 @@
 # Or use the helper script:
 #   crates/eval_cli/script/build-linux
 
-FROM rust:1.93 AS builder
+FROM rust:1.94.1 AS builder
 
 WORKDIR /app
 
     # Pre-install the toolchain specified in rust-toolchain.toml so it is cached.
-RUN rustup toolchain install 1.93 --profile minimal \
+RUN rustup toolchain install 1.94.1 --profile minimal \
     --component rustfmt --component clippy --component rust-analyzer --component rust-src \
     --target wasm32-wasip2 --target wasm32-unknown-unknown --target x86_64-unknown-linux-musl --target x86_64-unknown-linux-gnu
 

crates/project/src/debugger/test.rs

@@ -1,3 +1,4 @@
+#![expect(clippy::result_large_err)]
 use std::{path::Path, sync::Arc};
 
 use dap::client::DebugAdapterClient;

crates/rpc/src/message_stream.rs

@@ -7,7 +7,6 @@ use futures::{SinkExt as _, StreamExt as _};
 use proto::Message as _;
 use std::time::Instant;
 use std::{fmt::Debug, io};
-use zstd::zstd_safe::WriteBuf;
 
 const KIB: usize = 1024;
 const MIB: usize = KIB * 1024;
@@ -87,7 +86,10 @@ where
             let received_at = Instant::now();
             match bytes? {
                 WebSocketMessage::Binary(bytes) => {
-                    zstd::stream::copy_decode(bytes.as_slice(), &mut self.encoding_buffer)?;
+                    zstd::stream::copy_decode(
+                        zstd::zstd_safe::WriteBuf::as_slice(&*bytes),
+                        &mut self.encoding_buffer,
+                    )?;
                     let envelope = Envelope::decode(self.encoding_buffer.as_slice())
                         .map_err(io::Error::from)?;
 

rust-toolchain.toml

@@ -1,5 +1,5 @@
 [toolchain]
-channel = "1.93"
+channel = "1.94.1"
 profile = "minimal"
 components = [ "rustfmt", "clippy", "rust-analyzer", "rust-src" ]
 targets = [