[INFO] fetching crate tiny_prng 0.2.5...
[INFO] testing tiny_prng-0.2.5 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate tiny_prng 0.2.5 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate tiny_prng 0.2.5
[INFO] finished tweaking crates.io crate tiny_prng 0.2.5
[INFO] tweaked toml for crates.io crate tiny_prng 0.2.5 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tiny_prng 0.2.5 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 tiny_prng 0.2.5 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ac6439a006b2606464899cdd1ad2f761fd48479fa370a42f40dc437728c6f685
[INFO] running `Command { std: "docker" "start" "-a" "ac6439a006b2606464899cdd1ad2f761fd48479fa370a42f40dc437728c6f685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac6439a006b2606464899cdd1ad2f761fd48479fa370a42f40dc437728c6f685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac6439a006b2606464899cdd1ad2f761fd48479fa370a42f40dc437728c6f685", kill_on_drop: false }`
[INFO] [stdout] ac6439a006b2606464899cdd1ad2f761fd48479fa370a42f40dc437728c6f685
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] df8d6ea24b950f1bdde7647082e677089f878f94402b5b0c6b88f5ae5e944483
[INFO] running `Command { std: "docker" "start" "-a" "df8d6ea24b950f1bdde7647082e677089f878f94402b5b0c6b88f5ae5e944483", kill_on_drop: false }`
[INFO] [stderr]    Compiling tiny_prng v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(test)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `gen_delta_rate`
[INFO] [stdout]    --> src/xorshift.rs:151:37
[INFO] [stdout]     |
[INFO] [stdout] 151 |     use crate::{generate_unit_test, gen_delta_rate, generate_unit_test_real_ranged, generate_unit_test_real1, generate_unit_test_real2};
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/xorshift.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BitAnd`, `BitOr`, `Shl`, and `Shr`
[INFO] [stdout]   --> src/pcg.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::ops::{BitAnd, BitOr, Shl, Shr};
[INFO] [stdout]    |                ^^^^^^  ^^^^^  ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `gen_delta_rate`
[INFO] [stdout]    --> src/pcg.rs:163:17
[INFO] [stdout]     |
[INFO] [stdout] 163 |     use crate::{gen_delta_rate, generate_unit_test, generate_unit_test_real1, generate_unit_test_real2, generate_unit_test_real_ranged};
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PcgXshRr6432`, `PcgXshRs6432`, `PcgXslRr6432Mcg`, `PcgXslRrMcg`, and `PcgXslRr`
[INFO] [stdout]    --> src/pcg.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 164 |     use super::{PcgXslRr6432Mcg, PcgXslRr, PcgXslRrMcg, PcgXshRs6432, PcgXshRr6432};
[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 `tiny_prng` (lib) due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "df8d6ea24b950f1bdde7647082e677089f878f94402b5b0c6b88f5ae5e944483", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df8d6ea24b950f1bdde7647082e677089f878f94402b5b0c6b88f5ae5e944483", kill_on_drop: false }`
[INFO] [stdout] df8d6ea24b950f1bdde7647082e677089f878f94402b5b0c6b88f5ae5e944483