[INFO] fetching crate kt2 1.1.1...
[INFO] testing kt2-1.1.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate kt2 1.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate kt2 1.1.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kt2 1.1.1
[INFO] finished tweaking crates.io crate kt2 1.1.1
[INFO] tweaked toml for crates.io crate kt2 1.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded safe_pqc_kyber v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db2f5bd1a447ebd2803d173aebc1b44ff761558dac0f42b7877db0fcbdde3c45
[INFO] running `Command { std: "docker" "start" "-a" "db2f5bd1a447ebd2803d173aebc1b44ff761558dac0f42b7877db0fcbdde3c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db2f5bd1a447ebd2803d173aebc1b44ff761558dac0f42b7877db0fcbdde3c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2f5bd1a447ebd2803d173aebc1b44ff761558dac0f42b7877db0fcbdde3c45", kill_on_drop: false }`
[INFO] [stdout] db2f5bd1a447ebd2803d173aebc1b44ff761558dac0f42b7877db0fcbdde3c45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 892db53787d7cd485bd565621af0944ebf2cbe3051cc5c116226399d150959cc
[INFO] running `Command { std: "docker" "start" "-a" "892db53787d7cd485bd565621af0944ebf2cbe3051cc5c116226399d150959cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling bytecheck v0.6.11
[INFO] [stderr]    Compiling ahash v0.7.7
[INFO] [stderr]    Compiling simdutf8 v0.1.4
[INFO] [stderr]    Compiling rend v0.4.1
[INFO] [stderr]    Compiling rkyv v0.7.43
[INFO] [stderr]    Compiling constant_time_eq v0.3.0
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling arrayref v0.3.7
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling bs58 v0.5.0
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling blake3 v1.5.0
[INFO] [stderr]    Compiling ptr_meta_derive v0.1.4
[INFO] [stderr]    Compiling bytecheck_derive v0.6.11
[INFO] [stderr]    Compiling rkyv_derive v0.7.43
[INFO] [stderr]    Compiling ptr_meta v0.1.4
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling zeroize v1.7.0
[INFO] [stderr]    Compiling secrecy v0.8.0
[INFO] [stderr]    Compiling safe_pqc_kyber v0.6.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rkyv-0.7.43/src/lib.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 |     feature(auto_traits),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rkyv-0.7.43/src/lib.rs:120:5
[INFO] [stdout]     |
[INFO] [stdout] 120 |     feature(min_specialization),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rkyv-0.7.43/src/lib.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     feature(negative_impls),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rkyv-0.7.43/src/lib.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     feature(rustc_attrs)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rkyv` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "892db53787d7cd485bd565621af0944ebf2cbe3051cc5c116226399d150959cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "892db53787d7cd485bd565621af0944ebf2cbe3051cc5c116226399d150959cc", kill_on_drop: false }`
[INFO] [stdout] 892db53787d7cd485bd565621af0944ebf2cbe3051cc5c116226399d150959cc
