[INFO] cloning repository https://github.com/darinkishore/sample_rs_mcp [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/darinkishore/sample_rs_mcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarinkishore%2Fsample_rs_mcp", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarinkishore%2Fsample_rs_mcp'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 98b0d8db5b7a48dc1ff15cb84a562bc1df08c3c2 [INFO] building darinkishore/sample_rs_mcp against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarinkishore%2Fsample_rs_mcp" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/darinkishore/sample_rs_mcp on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/darinkishore/sample_rs_mcp [INFO] finished tweaking git repo https://github.com/darinkishore/sample_rs_mcp [INFO] tweaked toml for git repo https://github.com/darinkishore/sample_rs_mcp written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/darinkishore/sample_rs_mcp already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] dd8eea3ee81013195970d3bdadae0d82d27edcd0e55e39e80336d7a396cd9a5d [INFO] running `Command { std: "docker" "start" "-a" "dd8eea3ee81013195970d3bdadae0d82d27edcd0e55e39e80336d7a396cd9a5d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dd8eea3ee81013195970d3bdadae0d82d27edcd0e55e39e80336d7a396cd9a5d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dd8eea3ee81013195970d3bdadae0d82d27edcd0e55e39e80336d7a396cd9a5d", kill_on_drop: false }` [INFO] [stdout] dd8eea3ee81013195970d3bdadae0d82d27edcd0e55e39e80336d7a396cd9a5d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4ac62f3bb45253d4c2b1f6df5a51565da4f3b18269d2fffd01768dc75f86d6b0 [INFO] running `Command { std: "docker" "start" "-a" "4ac62f3bb45253d4c2b1f6df5a51565da4f3b18269d2fffd01768dc75f86d6b0", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.92 [INFO] [stderr] Compiling unicode-ident v1.0.14 [INFO] [stderr] Compiling autocfg v1.4.0 [INFO] [stderr] Compiling libc v0.2.167 [INFO] [stderr] Compiling pin-project-lite v0.2.15 [INFO] [stderr] Compiling futures-core v0.3.31 [INFO] [stderr] Compiling memchr v2.7.4 [INFO] [stderr] Compiling parking_lot_core v0.9.10 [INFO] [stderr] Compiling futures-sink v0.3.31 [INFO] [stderr] Compiling futures-io v0.3.31 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling smallvec v1.13.2 [INFO] [stderr] Compiling pin-utils v0.1.0 [INFO] [stderr] Compiling serde v1.0.216 [INFO] [stderr] Compiling scopeguard v1.2.0 [INFO] [stderr] Compiling futures-task v0.3.31 [INFO] [stderr] Compiling thiserror v2.0.9 [INFO] [stderr] Compiling once_cell v1.20.2 [INFO] [stderr] Compiling serde_json v1.0.137 [INFO] [stderr] Compiling mcp_client_rs v0.1.7 (/opt/rustwide/workdir) [INFO] [stderr] Compiling bytes v1.9.0 [INFO] [stderr] Compiling itoa v1.0.14 [INFO] [stderr] Compiling ryu v1.0.18 [INFO] [stderr] Compiling futures-channel v0.3.31 [INFO] [stderr] Compiling tracing-core v0.1.33 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling lock_api v0.4.12 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Compiling syn v2.0.90 [INFO] [stderr] Compiling signal-hook-registry v1.4.2 [INFO] [stderr] Compiling mio v1.0.3 [INFO] [stderr] Compiling socket2 v0.5.8 [INFO] [stderr] Compiling parking_lot v0.12.3 [INFO] [stderr] Compiling futures-macro v0.3.31 [INFO] [stderr] Compiling serde_derive v1.0.216 [INFO] [stderr] Compiling thiserror-impl v2.0.9 [INFO] [stderr] Compiling async-stream-impl v0.3.6 [INFO] [stderr] Compiling tokio-macros v2.4.0 [INFO] [stderr] Compiling tracing-attributes v0.1.28 [INFO] [stderr] Compiling async-trait v0.1.85 [INFO] [stderr] Compiling tokio v1.42.0 [INFO] [stderr] Compiling async-stream v0.3.6 [INFO] [stderr] Compiling futures-util v0.3.31 [INFO] [stderr] Compiling tracing v0.1.41 [INFO] [stderr] Compiling futures-executor v0.3.31 [INFO] [stderr] Compiling futures v0.3.31 [INFO] [stdout] warning: unused import: `serde_json::Value` [INFO] [stdout] --> src/client/mod.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use serde_json::Value; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `CompleteRequest`, `CompleteResult`, `GetPromptResult`, and `ListPromptsResult` [INFO] [stdout] --> src/client/mod.rs:13:62 [INFO] [stdout] | [INFO] [stdout] 13 | CallToolRequest, CallToolResult, ClientCapabilities, CompleteRequest, CompleteResult, [INFO] [stdout] | ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^ [INFO] [stdout] 14 | GetPromptResult, Implementation, InitializeResult, ListPromptsResult, ListResourcesResult, [INFO] [stdout] | ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Notification` and `RequestId` [INFO] [stdout] --> src/server/mod.rs:8:16 [INFO] [stdout] | [INFO] [stdout] 8 | protocol::{Notification, Request, RequestId, Response, ResponseError}, [INFO] [stdout] | ^^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `StreamExt` [INFO] [stdout] --> src/transport/stdio.rs:2:23 [INFO] [stdout] | [INFO] [stdout] 2 | use futures::{Stream, StreamExt}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ErrorCode` [INFO] [stdout] --> src/transport/stdio.rs:10:20 [INFO] [stdout] | [INFO] [stdout] 10 | error::{Error, ErrorCode}, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `response_sender` is never read [INFO] [stdout] --> src/client/mod.rs:38:5 [INFO] [stdout] | [INFO] [stdout] 28 | pub struct Client { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 38 | response_sender: tokio::sync::mpsc::UnboundedSender, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `message_type` is never used [INFO] [stdout] --> src/transport/mod.rs:21:8 [INFO] [stdout] | [INFO] [stdout] 20 | impl Message { [INFO] [stdout] | ------------ method in this implementation [INFO] [stdout] 21 | fn message_type(&self) -> &'static str { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.87s [INFO] running `Command { std: "docker" "inspect" "4ac62f3bb45253d4c2b1f6df5a51565da4f3b18269d2fffd01768dc75f86d6b0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4ac62f3bb45253d4c2b1f6df5a51565da4f3b18269d2fffd01768dc75f86d6b0", kill_on_drop: false }` [INFO] [stdout] 4ac62f3bb45253d4c2b1f6df5a51565da4f3b18269d2fffd01768dc75f86d6b0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e604f96272f2caaef9bf340e22df15ef2e769ff6951e9f922943adf12ff3ed92 [INFO] running `Command { std: "docker" "start" "-a" "e604f96272f2caaef9bf340e22df15ef2e769ff6951e9f922943adf12ff3ed92", kill_on_drop: false }` [INFO] [stderr] Compiling mcp_client_rs v0.1.7 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `serde_json::Value` [INFO] [stdout] --> src/client/mod.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use serde_json::Value; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `CompleteRequest`, `CompleteResult`, `GetPromptResult`, and `ListPromptsResult` [INFO] [stdout] --> src/client/mod.rs:13:62 [INFO] [stdout] | [INFO] [stdout] 13 | CallToolRequest, CallToolResult, ClientCapabilities, CompleteRequest, CompleteResult, [INFO] [stdout] | ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^ [INFO] [stdout] 14 | GetPromptResult, Implementation, InitializeResult, ListPromptsResult, ListResourcesResult, [INFO] [stdout] | ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Notification` and `RequestId` [INFO] [stdout] --> src/server/mod.rs:8:16 [INFO] [stdout] | [INFO] [stdout] 8 | protocol::{Notification, Request, RequestId, Response, ResponseError}, [INFO] [stdout] | ^^^^^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `StreamExt` [INFO] [stdout] --> src/transport/stdio.rs:2:23 [INFO] [stdout] | [INFO] [stdout] 2 | use futures::{Stream, StreamExt}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ErrorCode` [INFO] [stdout] --> src/transport/stdio.rs:10:20 [INFO] [stdout] | [INFO] [stdout] 10 | error::{Error, ErrorCode}, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `response_sender` is never read [INFO] [stdout] --> src/client/mod.rs:38:5 [INFO] [stdout] | [INFO] [stdout] 28 | pub struct Client { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 38 | response_sender: tokio::sync::mpsc::UnboundedSender, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `message_type` is never used [INFO] [stdout] --> src/transport/mod.rs:21:8 [INFO] [stdout] | [INFO] [stdout] 20 | impl Message { [INFO] [stdout] | ------------ method in this implementation [INFO] [stdout] 21 | fn message_type(&self) -> &'static str { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `serde_json::Value` [INFO] [stdout] --> src/client/mod.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use serde_json::Value; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `CompleteRequest`, `CompleteResult`, `GetPromptResult`, and `ListPromptsResult` [INFO] [stdout] --> src/client/mod.rs:13:62 [INFO] [stdout] | [INFO] [stdout] 13 | CallToolRequest, CallToolResult, ClientCapabilities, CompleteRequest, CompleteResult, [INFO] [stdout] | ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^ [INFO] [stdout] 14 | GetPromptResult, Implementation, InitializeResult, ListPromptsResult, ListResourcesResult, [INFO] [stdout] | ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `CallToolResult`, `ClientCapabilities`, `ListToolsResult`, `ReadResourceResult`, and `Tool` [INFO] [stdout] --> src/client/test.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | CallToolResult, ClientCapabilities, ListToolsResult, MessageContent, ReadResourceResult, [INFO] [stdout] | ^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 5 | ServerCapabilities, Tool, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `StreamExt` [INFO] [stdout] --> src/transport/stdio.rs:2:23 [INFO] [stdout] | [INFO] [stdout] 2 | use futures::{Stream, StreamExt}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ErrorCode` [INFO] [stdout] --> src/transport/stdio.rs:10:20 [INFO] [stdout] | [INFO] [stdout] 10 | error::{Error, ErrorCode}, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `StreamExt` [INFO] [stdout] --> src/server/mod.rs:151:27 [INFO] [stdout] | [INFO] [stdout] 151 | use futures::{Stream, StreamExt}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `client_rx` [INFO] [stdout] --> src/server/mod.rs:605:40 [INFO] [stdout] | [INFO] [stdout] 605 | let (transport, client_tx, mut client_rx) = MockTransport::new(); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_client_rx` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/server/mod.rs:605:36 [INFO] [stdout] | [INFO] [stdout] 605 | let (transport, client_tx, mut client_rx) = MockTransport::new(); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `response_sender` is never read [INFO] [stdout] --> src/client/mod.rs:38:5 [INFO] [stdout] | [INFO] [stdout] 28 | pub struct Client { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] ... [INFO] [stdout] 38 | response_sender: tokio::sync::mpsc::UnboundedSender, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `message_type` is never used [INFO] [stdout] --> src/transport/mod.rs:21:8 [INFO] [stdout] | [INFO] [stdout] 20 | impl Message { [INFO] [stdout] | ------------ method in this implementation [INFO] [stdout] 21 | fn message_type(&self) -> &'static str { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 5.92s [INFO] running `Command { std: "docker" "inspect" "e604f96272f2caaef9bf340e22df15ef2e769ff6951e9f922943adf12ff3ed92", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e604f96272f2caaef9bf340e22df15ef2e769ff6951e9f922943adf12ff3ed92", kill_on_drop: false }` [INFO] [stdout] e604f96272f2caaef9bf340e22df15ef2e769ff6951e9f922943adf12ff3ed92