[INFO] fetching crate uxc 0.12.8...
[INFO] checking uxc-0.12.8 against try#c86ec274072509d26d0ee52682a0c94ed012ed89 for pr-153027
[INFO] extracting crate uxc 0.12.8 into /workspace/builds/worker-6-tc2/source
[INFO] removed /workspace/builds/worker-6-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate uxc 0.12.8
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate uxc 0.12.8
[INFO] tweaked toml for crates.io crate uxc 0.12.8 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate uxc 0.12.8 on toolchain c86ec274072509d26d0ee52682a0c94ed012ed89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate uxc 0.12.8 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" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] f6c36a7c1b751b0e04fdca183d5c7fc746fe167b5a74a20ccaa0a1a29980aeb6
[INFO] running `Command { std: "docker" "start" "-a" "f6c36a7c1b751b0e04fdca183d5c7fc746fe167b5a74a20ccaa0a1a29980aeb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6c36a7c1b751b0e04fdca183d5c7fc746fe167b5a74a20ccaa0a1a29980aeb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6c36a7c1b751b0e04fdca183d5c7fc746fe167b5a74a20ccaa0a1a29980aeb6", kill_on_drop: false }`
[INFO] [stdout] f6c36a7c1b751b0e04fdca183d5c7fc746fe167b5a74a20ccaa0a1a29980aeb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f22404c78dbac239e5e597ddaa65ca387b75f987faca9680fccc66be76ef7f49
[INFO] running `Command { std: "docker" "start" "-a" "f22404c78dbac239e5e597ddaa65ca387b75f987faca9680fccc66be76ef7f49", kill_on_drop: false }`
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[INFO] [stdout] warning: function `test_server_binary` is never used
[INFO] [stdout]   --> tests/common/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn test_server_binary(name: &str) -> PathBuf {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `uxc_binary` is never used
[INFO] [stdout]   --> tests/common/mod.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn uxc_binary() -> PathBuf {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestServerHandle` is never constructed
[INFO] [stdout]   --> tests/common/mod.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct TestServerHandle {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_test_server` is never used
[INFO] [stdout]   --> tests/common/mod.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn start_test_server(protocol: &str, scenario: &str) -> TestServerHandle {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_uxc` is never used
[INFO] [stdout]    --> tests/common/mod.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub fn run_uxc(args: &[&str]) -> Result<String, String> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestServerHandle` is never constructed
[INFO] [stdout]   --> tests/common/mod.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct TestServerHandle {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_test_server` is never used
[INFO] [stdout]   --> tests/common/mod.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn start_test_server(protocol: &str, scenario: &str) -> TestServerHandle {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_uxc` is never used
[INFO] [stdout]    --> tests/common/mod.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub fn run_uxc(args: &[&str]) -> Result<String, String> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_uxc_in_home` is never used
[INFO] [stdout]    --> tests/common/mod.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 153 | pub fn run_uxc_in_home(args: &[&str], test_home: &std::path::Path) -> Result<String, String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fresh_test_home_dir` is never used
[INFO] [stdout]    --> tests/common/mod.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 | pub fn fresh_test_home_dir() -> PathBuf {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/protocol_test.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut server = mockito::Server::new();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `url`
[INFO] [stdout]   --> tests/protocol_test.rs:32:28
[INFO] [stdout]    |
[INFO] [stdout] 32 |     run_async_with_server(|url| {
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_url`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `uxc_binary` is never used
[INFO] [stdout]   --> tests/common/mod.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn uxc_binary() -> PathBuf {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_uxc` is never used
[INFO] [stdout]    --> tests/common/mod.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub fn run_uxc(args: &[&str]) -> Result<String, String> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_uxc_in_home` is never used
[INFO] [stdout]    --> tests/common/mod.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 153 | pub fn run_uxc_in_home(args: &[&str], test_home: &std::path::Path) -> Result<String, String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fresh_test_home_dir` is never used
[INFO] [stdout]    --> tests/common/mod.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 | pub fn fresh_test_home_dir() -> PathBuf {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first_output`
[INFO] [stdout]    --> tests/daemon_reuse_test.rs:555:9
[INFO] [stdout]     |
[INFO] [stdout] 555 |     let first_output = first.join().expect("first timeout thread panicked");
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_output`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second_output`
[INFO] [stdout]    --> tests/daemon_reuse_test.rs:559:9
[INFO] [stdout]     |
[INFO] [stdout] 559 |     let second_output = second.join().expect("second timeout thread panicked");
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/graphql_contract_test.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut server = mockito::Server::new();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `uxc_binary` is never used
[INFO] [stdout]   --> tests/common/mod.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn uxc_binary() -> PathBuf {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestServerHandle` is never constructed
[INFO] [stdout]   --> tests/common/mod.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct TestServerHandle {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_test_server` is never used
[INFO] [stdout]   --> tests/common/mod.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn start_test_server(protocol: &str, scenario: &str) -> TestServerHandle {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_uxc` is never used
[INFO] [stdout]    --> tests/common/mod.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub fn run_uxc(args: &[&str]) -> Result<String, String> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_uxc_in_home` is never used
[INFO] [stdout]    --> tests/common/mod.rs:153:8
[INFO] [stdout]     |
[INFO] [stdout] 153 | pub fn run_uxc_in_home(args: &[&str], test_home: &std::path::Path) -> Result<String, String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fresh_test_home_dir` is never used
[INFO] [stdout]    --> tests/common/mod.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 | pub fn fresh_test_home_dir() -> PathBuf {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/jsonrpc_contract_test.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut server = mockito::Server::new();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `responses` and `should_fail_after_spawn` are never read
[INFO] [stdout]    --> src/adapters/mcp/transport.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub struct MockStdioExecutor {
[INFO] [stdout]     |            ----------------- fields in this struct
[INFO] [stdout] 119 |     /// Simulated responses to send back
[INFO] [stdout] 120 |     pub responses: Arc<std::sync::Mutex<Vec<String>>>,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     pub should_fail_after_spawn: bool,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `with_responses` and `with_post_spawn_failure` are never used
[INFO] [stdout]    --> src/adapters/mcp/transport.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout] 130 | impl MockStdioExecutor {
[INFO] [stdout]     | ---------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 140 |     pub fn with_responses(responses: Vec<String>) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 158 |     pub fn with_post_spawn_failure() -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 47s
[INFO] running `Command { std: "docker" "inspect" "f22404c78dbac239e5e597ddaa65ca387b75f987faca9680fccc66be76ef7f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f22404c78dbac239e5e597ddaa65ca387b75f987faca9680fccc66be76ef7f49", kill_on_drop: false }`
[INFO] [stdout] f22404c78dbac239e5e597ddaa65ca387b75f987faca9680fccc66be76ef7f49
