[INFO] fetching crate smtp-server 0.1.0... [INFO] testing smtp-server-0.1.0 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate smtp-server 0.1.0 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate smtp-server 0.1.0 [INFO] finished tweaking crates.io crate smtp-server 0.1.0 [INFO] tweaked toml for crates.io crate smtp-server 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate smtp-server 0.1.0 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 smtp-server 0.1.0 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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c37ac33730b6617b8ab59105b815724b9616a1cb02e736c209c02a13a0f01e44 [INFO] running `Command { std: "docker" "start" "-a" "c37ac33730b6617b8ab59105b815724b9616a1cb02e736c209c02a13a0f01e44", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c37ac33730b6617b8ab59105b815724b9616a1cb02e736c209c02a13a0f01e44", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c37ac33730b6617b8ab59105b815724b9616a1cb02e736c209c02a13a0f01e44", kill_on_drop: false }` [INFO] [stdout] c37ac33730b6617b8ab59105b815724b9616a1cb02e736c209c02a13a0f01e44 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 868d725dcda9230185c21e90eaa3aae9d51d19f74338c0e4e19829ebd471c35e [INFO] running `Command { std: "docker" "start" "-a" "868d725dcda9230185c21e90eaa3aae9d51d19f74338c0e4e19829ebd471c35e", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling proc-macro2 v1.0.46 [INFO] [stderr] Compiling quote v1.0.21 [INFO] [stderr] Compiling unicode-ident v1.0.5 [INFO] [stderr] Compiling syn v1.0.102 [INFO] [stderr] Compiling futures-core v0.3.24 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling pin-project-lite v0.2.9 [INFO] [stderr] Compiling futures-io v0.3.24 [INFO] [stderr] Compiling libc v0.2.134 [INFO] [stderr] Compiling version_check v0.9.4 [INFO] [stderr] Compiling cache-padded v1.2.0 [INFO] [stderr] Compiling waker-fn v1.1.0 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Compiling parking v2.0.0 [INFO] [stderr] Compiling fastrand v1.8.0 [INFO] [stderr] Compiling concurrent-queue v1.2.4 [INFO] [stderr] Compiling once_cell v1.15.0 [INFO] [stderr] Compiling event-listener v2.5.3 [INFO] [stderr] Compiling async-task v4.3.0 [INFO] [stderr] Compiling futures-task v0.3.24 [INFO] [stderr] Compiling atomic-waker v1.0.0 [INFO] [stderr] Compiling futures-channel v0.3.24 [INFO] [stderr] Compiling futures-util v0.3.24 [INFO] [stderr] Compiling slab v0.4.7 [INFO] [stderr] Compiling polling v2.3.0 [INFO] [stderr] Compiling async-io v1.9.0 [INFO] [stderr] Compiling futures-sink v0.3.24 [INFO] [stderr] Compiling auto_enums_derive v0.7.12 [INFO] [stderr] Compiling async-lock v2.5.0 [INFO] [stderr] Compiling tinyvec_macros v0.1.0 [INFO] [stderr] Compiling async-channel v1.7.1 [INFO] [stderr] Compiling serde_derive v1.0.145 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling serde v1.0.145 [INFO] [stderr] Compiling value-bag v1.0.0-alpha.9 [INFO] [stderr] Compiling tinyvec v1.6.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.12 [INFO] [stderr] Compiling signal-hook v0.3.14 [INFO] [stderr] Compiling num-integer v0.1.45 [INFO] [stderr] Compiling async-net v1.7.0 [INFO] [stderr] Compiling async-fs v1.6.0 [INFO] [stderr] Compiling async-process v1.5.0 [INFO] [stderr] Compiling unicode-bidi v0.3.8 [INFO] [stderr] Compiling regex-syntax v0.6.27 [INFO] [stderr] Compiling async-trait v0.1.57 [INFO] [stderr] Compiling pin-project-lite v0.1.12 [INFO] [stderr] Compiling iana-time-zone v0.1.51 [INFO] [stderr] Compiling socket2 v0.4.7 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling time v0.1.44 [INFO] [stderr] Compiling futures-lite v1.12.0 [INFO] [stderr] Compiling nom v7.1.1 [INFO] [stderr] Compiling chrono v0.4.22 [INFO] [stderr] Compiling unicode-normalization v0.1.22 [INFO] [stderr] Compiling blocking v1.2.0 [INFO] [stderr] Compiling async-executor v1.4.1 [INFO] [stderr] Compiling idna v0.3.0 [INFO] [stderr] Compiling regex-automata v0.1.10 [INFO] [stderr] Compiling derive_utils v0.11.2 [INFO] [stderr] Compiling ctor v0.1.23 [INFO] [stderr] Compiling futures-macro v0.3.24 [INFO] [stderr] Compiling pin-project-internal v1.0.12 [INFO] [stderr] Compiling auto_enums_core v0.7.12 [INFO] [stderr] Compiling auto_enums v0.7.12 [INFO] [stderr] Compiling pin-project v1.0.12 [INFO] [stderr] Compiling kv-log-macro v1.0.7 [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-util-0.3.24/src/lib.rs:4:45 [INFO] [stdout] | [INFO] [stdout] 4 | #![cfg_attr(feature = "write-all-vectored", feature(io_slice_advance))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling async-global-executor v2.3.0 [INFO] [stderr] Compiling async-std v1.12.0 [INFO] [stderr] Compiling smol v1.2.5 [INFO] [stderr] Compiling duplexify v1.2.2 [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `futures-util` (lib) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "868d725dcda9230185c21e90eaa3aae9d51d19f74338c0e4e19829ebd471c35e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "868d725dcda9230185c21e90eaa3aae9d51d19f74338c0e4e19829ebd471c35e", kill_on_drop: false }` [INFO] [stdout] 868d725dcda9230185c21e90eaa3aae9d51d19f74338c0e4e19829ebd471c35e