[INFO] fetching crate mmr-crypto-primitives 0.2.1...
[INFO] checking mmr-crypto-primitives-0.2.1 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate mmr-crypto-primitives 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate mmr-crypto-primitives 0.2.1
[INFO] finished tweaking crates.io crate mmr-crypto-primitives 0.2.1
[INFO] tweaked toml for crates.io crate mmr-crypto-primitives 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mmr-crypto-primitives 0.2.1 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 82 packages to latest compatible versions
[INFO] [stderr]       Adding ark-bls12-377 v0.3.0 (available: v0.5.0)
[INFO] [stderr]       Adding ark-ec v0.3.0 (available: v0.5.0)
[INFO] [stderr]       Adding ark-ed-on-bls12-381 v0.3.0 (available: v0.5.0)
[INFO] [stderr]       Adding ark-ff v0.3.0 (available: v0.5.0)
[INFO] [stderr]       Adding ark-mnt4-298 v0.3.0 (available: v0.5.0)
[INFO] [stderr]       Adding ark-mnt6-298 v0.3.0 (available: v0.5.0)
[INFO] [stderr]       Adding ark-r1cs-std v0.3.1 (available: v0.5.0)
[INFO] [stderr]       Adding ark-relations v0.3.0 (available: v0.5.1)
[INFO] [stderr]       Adding ark-serialize v0.3.0 (available: v0.5.0)
[INFO] [stderr]       Adding ark-snark v0.3.0 (available: v0.5.1)
[INFO] [stderr]       Adding ark-std v0.3.0 (available: v0.5.0)
[INFO] [stderr]       Adding blake2 v0.9.2 (available: v0.10.6)
[INFO] [stderr]       Adding digest v0.9.0 (available: v0.10.7)
[INFO] [stderr]       Adding sha2 v0.9.9 (available: v0.10.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ark-ed-on-bls12-381 v0.3.0
[INFO] [stderr]   Downloaded ark-mnt4-298 v0.3.0
[INFO] [stderr]   Downloaded ark-bls12-377 v0.3.0
[INFO] [stderr]   Downloaded ark-bls12-381 v0.3.0
[INFO] [stderr]   Downloaded ark-r1cs-std v0.3.1
[INFO] [stderr]   Downloaded ark-relations v0.3.0
[INFO] [stderr]   Downloaded ark-sponge v0.3.0
[INFO] [stderr]   Downloaded ark-mnt6-298 v0.3.0
[INFO] [stderr]   Downloaded ark-nonnative-field v0.3.0
[INFO] [stderr]   Downloaded ark-snark v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 311aeb83d6293b4cf119808b157062ac8671a8ffb63dd9976dde5aa3176aa211
[INFO] running `Command { std: "docker" "start" "-a" "311aeb83d6293b4cf119808b157062ac8671a8ffb63dd9976dde5aa3176aa211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "311aeb83d6293b4cf119808b157062ac8671a8ffb63dd9976dde5aa3176aa211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "311aeb83d6293b4cf119808b157062ac8671a8ffb63dd9976dde5aa3176aa211", kill_on_drop: false }`
[INFO] [stdout] 311aeb83d6293b4cf119808b157062ac8671a8ffb63dd9976dde5aa3176aa211
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47fd26c64ca975c931d001d46f7b24d798cb5fdccf3853b372a0b75c5f571ec9
[INFO] running `Command { std: "docker" "start" "-a" "47fd26c64ca975c931d001d46f7b24d798cb5fdccf3853b372a0b75c5f571ec9", kill_on_drop: false }`
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling thiserror-impl v2.0.16
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling ark-serialize-derive v0.3.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling ark-ff-asm v0.3.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking blake2 v0.9.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking zeroize v1.8.1
[INFO] [stderr]    Compiling pest v2.8.1
[INFO] [stderr]     Checking ark-std v0.3.0
[INFO] [stderr]     Checking ark-serialize v0.3.0
[INFO] [stderr]    Compiling ark-ff-macros v0.3.0
[INFO] [stderr]    Compiling semver-parser v0.10.3
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling ark-ff v0.3.0
[INFO] [stderr]     Checking ark-ec v0.3.0
[INFO] [stderr]     Checking ark-relations v0.3.0
[INFO] [stderr]     Checking ark-snark v0.3.0
[INFO] [stderr]     Checking ark-r1cs-std v0.3.1
[INFO] [stderr]     Checking ark-sponge v0.3.0
[INFO] [stderr]     Checking ark-bls12-381 v0.3.0
[INFO] [stderr]     Checking mmr-crypto-primitives v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: associated items `new` and `clone` are never used
[INFO] [stdout]    --> src/mmr/mmr_store.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub trait MMRStore<Elem>: Clone + Sized {
[INFO] [stdout]     |           -------- associated items in this trait
[INFO] [stdout] 113 |     fn new() -> Result<Self> where Self: Sized;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 116 |     fn clone(&self) -> Result<Self> where Self: Sized;
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:3:5
[INFO] [stdout]     |
[INFO] [stdout]   3 |     unused,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     = note: `#[deny(dead_code)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mmr-crypto-primitives` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "47fd26c64ca975c931d001d46f7b24d798cb5fdccf3853b372a0b75c5f571ec9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47fd26c64ca975c931d001d46f7b24d798cb5fdccf3853b372a0b75c5f571ec9", kill_on_drop: false }`
[INFO] [stdout] 47fd26c64ca975c931d001d46f7b24d798cb5fdccf3853b372a0b75c5f571ec9