[INFO] fetching crate cosmian_kms_access 5.9.0...
[INFO] testing cosmian_kms_access-5.9.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate cosmian_kms_access 5.9.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate cosmian_kms_access 5.9.0
[INFO] finished tweaking crates.io crate cosmian_kms_access 5.9.0
[INFO] tweaked toml for crates.io crate cosmian_kms_access 5.9.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cosmian_kms_access 5.9.0 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 cosmian_kms_access 5.9.0 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] [stderr]     Blocking waiting for file lock on package cache
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5564365ce9126b722d54b8f8b8b717dceca5678f53bd720325823f792a2ff5c8
[INFO] running `Command { std: "docker" "start" "-a" "5564365ce9126b722d54b8f8b8b717dceca5678f53bd720325823f792a2ff5c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5564365ce9126b722d54b8f8b8b717dceca5678f53bd720325823f792a2ff5c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5564365ce9126b722d54b8f8b8b717dceca5678f53bd720325823f792a2ff5c8", kill_on_drop: false }`
[INFO] [stdout] 5564365ce9126b722d54b8f8b8b717dceca5678f53bd720325823f792a2ff5c8
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a6d44bae86099bc2ed0883f64bfb475ddd3b02bdf0e8c36a8db4e2f88f9bd84
[INFO] running `Command { std: "docker" "start" "-a" "1a6d44bae86099bc2ed0883f64bfb475ddd3b02bdf0e8c36a8db4e2f88f9bd84", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling time-core v0.1.5
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling nu-ansi-term v0.50.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling num-bigint-dig v0.8.4
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling uuid v1.11.1
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling time-macros v0.2.23
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling regex-automata v0.4.10
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling thiserror-impl v2.0.16
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling kmip-derive v5.9.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling opentelemetry v0.29.1
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling strum v0.27.2
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling deranged v0.5.3
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling time v0.3.42
[INFO] [stderr]    Compiling tracing-appender v0.2.3
[INFO] [stderr]    Compiling cosmian_logger v0.5.2
[INFO] [stderr]    Compiling cosmian_kmip v5.9.0
[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/cosmian_kmip-5.9.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(min_specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cosmian_kmip` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "1a6d44bae86099bc2ed0883f64bfb475ddd3b02bdf0e8c36a8db4e2f88f9bd84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a6d44bae86099bc2ed0883f64bfb475ddd3b02bdf0e8c36a8db4e2f88f9bd84", kill_on_drop: false }`
[INFO] [stdout] 1a6d44bae86099bc2ed0883f64bfb475ddd3b02bdf0e8c36a8db4e2f88f9bd84