[INFO] fetching crate talos 0.1.0...
[INFO] testing talos-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate talos 0.1.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate talos 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate talos 0.1.0
[INFO] finished tweaking crates.io crate talos 0.1.0
[INFO] tweaked toml for crates.io crate talos 0.1.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate talos 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded talos_procs v0.1.0
[INFO] [stderr]   Downloaded reverse v0.2.2
[INFO] [stderr]   Downloaded alea v0.2.2
[INFO] [stderr]   Downloaded seq-macro v0.2.2
[INFO] [stderr]   Downloaded impl_ops v0.1.1
[INFO] [stderr]   Downloaded compute v0.2.2
[INFO] [stderr]   Downloaded approx_eq v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffd692384214de43fa3fd49fe9b239901ad1cc7e299fef730eecef54823f47e4
[INFO] running `Command { std: "docker" "start" "-a" "ffd692384214de43fa3fd49fe9b239901ad1cc7e299fef730eecef54823f47e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffd692384214de43fa3fd49fe9b239901ad1cc7e299fef730eecef54823f47e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffd692384214de43fa3fd49fe9b239901ad1cc7e299fef730eecef54823f47e4", kill_on_drop: false }`
[INFO] [stdout] ffd692384214de43fa3fd49fe9b239901ad1cc7e299fef730eecef54823f47e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e59b4242465d7ec84aeaa0da67d709bb6be68e32b34309baae92eaa8fee1259e
[INFO] running `Command { std: "docker" "start" "-a" "e59b4242465d7ec84aeaa0da67d709bb6be68e32b34309baae92eaa8fee1259e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling approx_eq v0.1.8
[INFO] [stderr]    Compiling reverse v0.2.2
[INFO] [stderr]    Compiling alea v0.2.2
[INFO] [stderr]    Compiling impl_ops v0.1.1
[INFO] [stderr]    Compiling seq-macro v0.2.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling compute v0.2.2
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling talos_procs v0.1.0
[INFO] [stderr]    Compiling talos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::functions`
[INFO] [stdout]  --> src/distributions.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::functions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rayon::prelude::*`
[INFO] [stdout]  --> src/samplers/hmc.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rayon::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `talos` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e59b4242465d7ec84aeaa0da67d709bb6be68e32b34309baae92eaa8fee1259e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e59b4242465d7ec84aeaa0da67d709bb6be68e32b34309baae92eaa8fee1259e", kill_on_drop: false }`
[INFO] [stdout] e59b4242465d7ec84aeaa0da67d709bb6be68e32b34309baae92eaa8fee1259e