[INFO] cloning repository https://github.com/ArhanChaudhary/generativity-pattern-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArhanChaudhary/generativity-pattern-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArhanChaudhary%2Fgenerativity-pattern-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArhanChaudhary%2Fgenerativity-pattern-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 064f36f6468e8d66c54b1d13125d5fe11e836959
[INFO] checking ArhanChaudhary/generativity-pattern-rs against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArhanChaudhary%2Fgenerativity-pattern-rs" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-5-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/ArhanChaudhary/generativity-pattern-rs
[INFO] finished tweaking git repo https://github.com/ArhanChaudhary/generativity-pattern-rs
[INFO] tweaked toml for git repo https://github.com/ArhanChaudhary/generativity-pattern-rs written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ArhanChaudhary/generativity-pattern-rs on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ArhanChaudhary/generativity-pattern-rs 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded permutation-rs v3.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd4d61f47245eaa225615eb6353d877645ae2227db013a538a3fadd2d58fc166
[INFO] running `Command { std: "docker" "start" "-a" "bd4d61f47245eaa225615eb6353d877645ae2227db013a538a3fadd2d58fc166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd4d61f47245eaa225615eb6353d877645ae2227db013a538a3fadd2d58fc166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd4d61f47245eaa225615eb6353d877645ae2227db013a538a3fadd2d58fc166", kill_on_drop: false }`
[INFO] [stdout] bd4d61f47245eaa225615eb6353d877645ae2227db013a538a3fadd2d58fc166
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25d58075952c0b2bb9b894c8f37068562e51710526bb2b91c2e09fdb165293f7
[INFO] running `Command { std: "docker" "start" "-a" "25d58075952c0b2bb9b894c8f37068562e51710526bb2b91c2e09fdb165293f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking half v2.6.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking generativity v1.1.0
[INFO] [stderr]     Checking clap_builder v4.5.40
[INFO] [stderr]     Checking permutation-rs v3.0.0
[INFO] [stderr]     Checking oorandom v11.1.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking generativity-pattern-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(super_let)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `make_guard`
[INFO] [stdout]  --> src/branded_vec.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use generativity::{Guard, Id, make_guard};
[INFO] [stdout]   |                               ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `generativity-pattern-rs` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "25d58075952c0b2bb9b894c8f37068562e51710526bb2b91c2e09fdb165293f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25d58075952c0b2bb9b894c8f37068562e51710526bb2b91c2e09fdb165293f7", kill_on_drop: false }`
[INFO] [stdout] 25d58075952c0b2bb9b894c8f37068562e51710526bb2b91c2e09fdb165293f7
