[INFO] fetching crate rutin_resp3 0.1.1...
[INFO] testing rutin_resp3-0.1.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate rutin_resp3 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate rutin_resp3 0.1.1
[INFO] finished tweaking crates.io crate rutin_resp3 0.1.1
[INFO] tweaked toml for crates.io crate rutin_resp3 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rutin_resp3 0.1.1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rutin_resp3 0.1.1 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a869eafb60a1509fda439219400e8bab23096f22da54c995208a51db829bee57
[INFO] running `Command { std: "docker" "start" "-a" "a869eafb60a1509fda439219400e8bab23096f22da54c995208a51db829bee57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a869eafb60a1509fda439219400e8bab23096f22da54c995208a51db829bee57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a869eafb60a1509fda439219400e8bab23096f22da54c995208a51db829bee57", kill_on_drop: false }`
[INFO] [stdout] a869eafb60a1509fda439219400e8bab23096f22da54c995208a51db829bee57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1560fe474a0c46b57d148a63692fd6b26134e45483e7a0a23a208b011336232
[INFO] running `Command { std: "docker" "start" "-a" "e1560fe474a0c46b57d148a63692fd6b26134e45483e7a0a23a208b011336232", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling bytes v1.9.0
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]    Compiling socket2 v0.5.8
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling tokio v1.42.0
[INFO] [stderr]    Compiling tokio-util v0.7.13
[INFO] [stderr]    Compiling rutin_resp3 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(core_intrinsics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/codec/decode.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |             let mut fut = _decode_async(&mut io_read, &mut src);
[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] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rutin_resp3` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e1560fe474a0c46b57d148a63692fd6b26134e45483e7a0a23a208b011336232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1560fe474a0c46b57d148a63692fd6b26134e45483e7a0a23a208b011336232", kill_on_drop: false }`
[INFO] [stdout] e1560fe474a0c46b57d148a63692fd6b26134e45483e7a0a23a208b011336232