[INFO] fetching crate netxclient 1.10.9...
[INFO] checking netxclient-1.10.9 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate netxclient 1.10.9 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate netxclient 1.10.9 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate netxclient 1.10.9
[INFO] finished tweaking crates.io crate netxclient 1.10.9
[INFO] tweaked toml for crates.io crate netxclient 1.10.9 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate netxclient 1.10.9 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded openssl-sys v0.9.96
[INFO] [stderr]   Downloaded proc_macro_roids v0.7.0
[INFO] [stderr]   Downloaded openssl v0.10.60
[INFO] [stderr]   Downloaded env_logger v0.10.1
[INFO] [stderr]   Downloaded netxbuilder v1.5.2
[INFO] [stderr]   Downloaded tcp-channel-client v0.1.0
[INFO] [stderr]   Downloaded tcpclient v1.4.1
[INFO] [stderr]   Downloaded data-rw v1.6.4
[INFO] [stderr]   Downloaded aqueue v1.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8787990e98e48cb3b43f8c7c1420118789e7d557a3a246b56533b9c6b6552bd4
[INFO] running `Command { std: "docker" "start" "-a" "8787990e98e48cb3b43f8c7c1420118789e7d557a3a246b56533b9c6b6552bd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8787990e98e48cb3b43f8c7c1420118789e7d557a3a246b56533b9c6b6552bd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8787990e98e48cb3b43f8c7c1420118789e7d557a3a246b56533b9c6b6552bd4", kill_on_drop: false }`
[INFO] [stdout] 8787990e98e48cb3b43f8c7c1420118789e7d557a3a246b56533b9c6b6552bd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ad9b5c455f36219a8c35f271cbdd5c310ac819d8928513fb88b0827fa0fc2de
[INFO] running `Command { std: "docker" "start" "-a" "5ad9b5c455f36219a8c35f271cbdd5c310ac819d8928513fb88b0827fa0fc2de", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rustix v0.38.25
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking linux-raw-sys v0.4.11
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking termcolor v1.4.0
[INFO] [stderr]     Checking oneshot v0.1.6
[INFO] [stderr]     Checking rustls-pemfile v1.0.4
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking async-lock v2.6.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking env_logger v0.10.1
[INFO] [stderr]     Checking rmp v0.8.12
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.35
[INFO] [stderr]     Checking mimalloc v0.1.39
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling async-trait v0.1.74
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling proc_macro_roids v0.7.0
[INFO] [stderr]     Checking tokio v1.34.0
[INFO] [stderr]     Checking aqueue v1.3.5
[INFO] [stderr]    Compiling auto_impl v1.1.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling netxbuilder v1.5.2
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking tcpclient v1.4.1
[INFO] [stderr]     Checking rmp-serde v1.1.2
[INFO] [stderr]     Checking serde_json v1.0.108
[INFO] [stderr]     Checking data-rw v1.6.4
[INFO] [stderr]     Checking netxclient v1.10.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `IServer` is imported redundantly
[INFO] [stdout]  --> examples/bench_test/main.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | use server::{IServer, *};
[INFO] [stdout]   |              ^^^^^^^  - the item `IServer` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IServer` is imported redundantly
[INFO] [stdout]  --> examples/bench_test2/main.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | use server::{IServer, *};
[INFO] [stdout]   |              ^^^^^^^  - the item `IServer` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `test` is never used
[INFO] [stdout]   --> examples/test_client/server.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub trait IServer: Sync + Send {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 34 |     async fn test(&self, msg: &str, i: i32);
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.23s
[INFO] running `Command { std: "docker" "inspect" "5ad9b5c455f36219a8c35f271cbdd5c310ac819d8928513fb88b0827fa0fc2de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ad9b5c455f36219a8c35f271cbdd5c310ac819d8928513fb88b0827fa0fc2de", kill_on_drop: false }`
[INFO] [stdout] 5ad9b5c455f36219a8c35f271cbdd5c310ac819d8928513fb88b0827fa0fc2de