[INFO] fetching crate rln 0.4.1...
[INFO] checking rln-0.4.1 against master#5431404b87967c69438ea1e698edbe96505f0798 for pr-119849
[INFO] extracting crate rln 0.4.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate rln 0.4.1 on toolchain 5431404b87967c69438ea1e698edbe96505f0798
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rln 0.4.1
[INFO] finished tweaking crates.io crate rln 0.4.1
[INFO] tweaked toml for crates.io crate rln 0.4.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "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" "+5431404b87967c69438ea1e698edbe96505f0798" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+5431404b87967c69438ea1e698edbe96505f0798" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a140c05d4c2c4e69fcb8e1e279eaa4ff0193f1b916e6a4845d14afb45ece5105
[INFO] running `Command { std: "docker" "start" "-a" "a140c05d4c2c4e69fcb8e1e279eaa4ff0193f1b916e6a4845d14afb45ece5105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a140c05d4c2c4e69fcb8e1e279eaa4ff0193f1b916e6a4845d14afb45ece5105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a140c05d4c2c4e69fcb8e1e279eaa4ff0193f1b916e6a4845d14afb45ece5105", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5431404b87967c69438ea1e698edbe96505f0798" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1132dcacb63d39115aba9b0a0d8fa86e3c45e918d1feed43510a0937b62c8be9
[INFO] running `Command { std: "docker" "start" "-a" "1132dcacb63d39115aba9b0a0d8fa86e3c45e918d1feed43510a0937b62c8be9", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `user_message_limit`
[INFO] [stdout]    --> tests/ffi.rs:341:13
[INFO] [stdout]     |
[INFO] [stdout] 341 |         let user_message_limit = 1;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user_message_limit`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rate_commitment`
[INFO] [stdout]    --> tests/ffi.rs:704:13
[INFO] [stdout]     |
[INFO] [stdout] 704 |         let rate_commitment = utils_poseidon_hash(&[id_commitment, user_message_limit]);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rate_commitment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rln_identifier`
[INFO] [stdout]    --> tests/ffi.rs:728:13
[INFO] [stdout]     |
[INFO] [stdout] 728 |         let rln_identifier = hash_to_field(b"test-rln-identifier");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rln_identifier`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rate_commitment`
[INFO] [stdout]    --> tests/ffi.rs:802:13
[INFO] [stdout]     |
[INFO] [stdout] 802 |         let rate_commitment = utils_poseidon_hash(&[id_commitment, user_message_limit]);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rate_commitment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.84s
[INFO] running `Command { std: "docker" "inspect" "1132dcacb63d39115aba9b0a0d8fa86e3c45e918d1feed43510a0937b62c8be9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1132dcacb63d39115aba9b0a0d8fa86e3c45e918d1feed43510a0937b62c8be9", kill_on_drop: false }`
[INFO] [stdout] 1132dcacb63d39115aba9b0a0d8fa86e3c45e918d1feed43510a0937b62c8be9