[INFO] cloning repository https://github.com/davidanderle1/merkle-poseidon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidanderle1/merkle-poseidon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidanderle1%2Fmerkle-poseidon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidanderle1%2Fmerkle-poseidon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8223c985c797246e9f3fd2d191e26a279081963e
[INFO] checking davidanderle1/merkle-poseidon/8223c985c797246e9f3fd2d191e26a279081963e against master#b52edc25bfbaa955b4b83c10f998e5224c3478b2 for pr-156776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidanderle1%2Fmerkle-poseidon" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/davidanderle1/merkle-poseidon
[INFO] finished tweaking git repo https://github.com/davidanderle1/merkle-poseidon
[INFO] tweaked toml for git repo https://github.com/davidanderle1/merkle-poseidon written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/davidanderle1/merkle-poseidon on toolchain b52edc25bfbaa955b4b83c10f998e5224c3478b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b52edc25bfbaa955b4b83c10f998e5224c3478b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/davidanderle1/merkle-poseidon 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" "+b52edc25bfbaa955b4b83c10f998e5224c3478b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ark-sponge v0.4.0-alpha
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b52edc25bfbaa955b4b83c10f998e5224c3478b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f83f39de4f8bcaf1ac7a35ee2c0354f813b4c58e7efcd5403a366b0b4eaaf758
[INFO] running `Command { std: "docker" "start" "-a" "f83f39de4f8bcaf1ac7a35ee2c0354f813b4c58e7efcd5403a366b0b4eaaf758", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f83f39de4f8bcaf1ac7a35ee2c0354f813b4c58e7efcd5403a366b0b4eaaf758", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f83f39de4f8bcaf1ac7a35ee2c0354f813b4c58e7efcd5403a366b0b4eaaf758", kill_on_drop: false }`
[INFO] [stdout] f83f39de4f8bcaf1ac7a35ee2c0354f813b4c58e7efcd5403a366b0b4eaaf758
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b52edc25bfbaa955b4b83c10f998e5224c3478b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb846388047decb5b4b36a7b37b3edb82e9fc75c9313feec39447c465e3c1d65
[INFO] running `Command { std: "docker" "start" "-a" "bb846388047decb5b4b36a7b37b3edb82e9fc75c9313feec39447c465e3c1d65", kill_on_drop: false }`
[INFO] [stderr]     Checking typenum v1.20.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling zeroize_derive v1.4.3
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.6
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]     Checking ark-std v0.4.0
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking crypto-common v0.1.7
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling ark-serialize-derive v0.4.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling ark-ff-macros v0.4.2
[INFO] [stderr]    Compiling ark-ff-asm v0.4.2
[INFO] [stderr]     Checking ark-serialize v0.4.2
[INFO] [stderr]     Checking ark-ff v0.4.2
[INFO] [stderr]     Checking ark-poly v0.4.2
[INFO] [stderr]     Checking ark-relations v0.4.0
[INFO] [stderr]     Checking ark-ec v0.4.2
[INFO] [stderr]     Checking ark-r1cs-std v0.4.0
[INFO] [stderr]     Checking ark-bls12-381 v0.4.0
[INFO] [stderr]     Checking ark-sponge v0.4.0-alpha
[INFO] [stderr]     Checking merkle-poseidon v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `leaves` is never read
[INFO] [stdout]  --> src/merkle/tree.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct MerkleTree {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 7 |     pub leaves: Vec<Fr>,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `MerkleTree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash` is never used
[INFO] [stdout]  --> src/hash/toy.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hash(left: Fr, right: Fr) -> Fr {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `leaves` is never read
[INFO] [stdout]  --> src/merkle/tree.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct MerkleTree {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 7 |     pub leaves: Vec<Fr>,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `MerkleTree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash` is never used
[INFO] [stdout]  --> src/hash/toy.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hash(left: Fr, right: Fr) -> Fr {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 32.76s
[INFO] running `Command { std: "docker" "inspect" "bb846388047decb5b4b36a7b37b3edb82e9fc75c9313feec39447c465e3c1d65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb846388047decb5b4b36a7b37b3edb82e9fc75c9313feec39447c465e3c1d65", kill_on_drop: false }`
[INFO] [stdout] bb846388047decb5b4b36a7b37b3edb82e9fc75c9313feec39447c465e3c1d65