[INFO] fetching crate zrpc 0.8.12...
[INFO] testing zrpc-0.8.12 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate zrpc 0.8.12 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate zrpc 0.8.12
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate zrpc 0.8.12
[INFO] tweaked toml for crates.io crate zrpc 0.8.12 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zrpc 0.8.12 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zrpc 0.8.12 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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_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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa29ea80e57d2762f98ba9d27b584195781f0dd10c25fe855fc1952a227224dd
[INFO] running `Command { std: "docker" "start" "-a" "aa29ea80e57d2762f98ba9d27b584195781f0dd10c25fe855fc1952a227224dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa29ea80e57d2762f98ba9d27b584195781f0dd10c25fe855fc1952a227224dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa29ea80e57d2762f98ba9d27b584195781f0dd10c25fe855fc1952a227224dd", kill_on_drop: false }`
[INFO] [stdout] aa29ea80e57d2762f98ba9d27b584195781f0dd10c25fe855fc1952a227224dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15cc9bd616ab139342ea359b49de960dbcbf249342276e2d3822b0628cb4e6bd
[INFO] running `Command { std: "docker" "start" "-a" "15cc9bd616ab139342ea359b49de960dbcbf249342276e2d3822b0628cb4e6bd", kill_on_drop: false }`
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[INFO] [stderr]    Compiling zrpc v0.8.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 38.12s
[INFO] running `Command { std: "docker" "inspect" "15cc9bd616ab139342ea359b49de960dbcbf249342276e2d3822b0628cb4e6bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15cc9bd616ab139342ea359b49de960dbcbf249342276e2d3822b0628cb4e6bd", kill_on_drop: false }`
[INFO] [stdout] 15cc9bd616ab139342ea359b49de960dbcbf249342276e2d3822b0628cb4e6bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df541ca571e670010304fa20a5962bc3ff50beb08ff616956fce6c05f11b435f
[INFO] running `Command { std: "docker" "start" "-a" "df541ca571e670010304fa20a5962bc3ff50beb08ff616956fce6c05f11b435f", kill_on_drop: false }`
[INFO] [stderr]    Compiling zrpc v0.8.12 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0425]: cannot find function `stdin` in module `tokio::io`
[INFO] [stdout]    --> examples/check-servers.rs:142:16
[INFO] [stdout]     |
[INFO] [stdout] 142 |     tokio::io::stdin().read_exact(buffer).await.unwrap();
[INFO] [stdout]     |                ^^^^^ not found in `tokio::io`
[INFO] [stdout]     |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/io/mod.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 255 | / cfg_io_std! {
[INFO] [stdout] 256 | |     mod stdio_common;
[INFO] [stdout] 257 | |
[INFO] [stdout] 258 | |     mod stderr;
[INFO] [stdout] ...   |
[INFO] [stdout] 261 | |     mod stdin;
[INFO] [stdout]     | |         ^^^^^
[INFO] [stdout] ...   |
[INFO] [stdout] 265 | |     pub use stdout::{stdout, Stdout};
[INFO] [stdout] 266 | | }
[INFO] [stdout]     | |_- the item is gated behind the `io-std` feature
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.1/src/io/mod.rs:262:21
[INFO] [stdout]     |
[INFO] [stdout] 255 | / cfg_io_std! {
[INFO] [stdout] 256 | |     mod stdio_common;
[INFO] [stdout] 257 | |
[INFO] [stdout] 258 | |     mod stderr;
[INFO] [stdout] ...   |
[INFO] [stdout] 262 | |     pub use stdin::{stdin, Stdin};
[INFO] [stdout]     | |                     ^^^^^
[INFO] [stdout] ...   |
[INFO] [stdout] 265 | |     pub use stdout::{stdout, Stdout};
[INFO] [stdout] 266 | | }
[INFO] [stdout]     | |_- the item is gated behind the `io-std` feature
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]     |
[INFO] [stdout]  13 + use std::io::stdin;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `stdin`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 142 -     tokio::io::stdin().read_exact(buffer).await.unwrap();
[INFO] [stdout] 142 +     stdin().read_exact(buffer).await.unwrap();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> examples/check-servers.rs:142:5
[INFO] [stdout]     |
[INFO] [stdout] 142 |     tokio::io::stdin().read_exact(buffer).await.unwrap();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0425.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zrpc` (example "check-servers") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "df541ca571e670010304fa20a5962bc3ff50beb08ff616956fce6c05f11b435f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df541ca571e670010304fa20a5962bc3ff50beb08ff616956fce6c05f11b435f", kill_on_drop: false }`
[INFO] [stdout] df541ca571e670010304fa20a5962bc3ff50beb08ff616956fce6c05f11b435f