[INFO] fetching crate ark-relations-zkhub 0.4.7...
[INFO] checking ark-relations-zkhub-0.4.7 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate ark-relations-zkhub 0.4.7 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ark-relations-zkhub 0.4.7
[INFO] finished tweaking crates.io crate ark-relations-zkhub 0.4.7
[INFO] tweaked toml for crates.io crate ark-relations-zkhub 0.4.7 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ark-relations-zkhub 0.4.7 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 82 packages to latest compatible versions
[INFO] [stderr]       Adding ark-ff v0.4.2 (available: v0.5.0)
[INFO] [stderr]       Adding ark-std v0.4.0 (available: v0.5.0)
[INFO] [stderr]       Adding ark-test-curves v0.4.2 (available: v0.5.0)
[INFO] [stderr]       Adding tracing-subscriber v0.2.25 (available: v0.3.20)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66a2fb39188b7f8af9b50290d5726f50703fb683fb2eb0348f935fd1c75cb08c
[INFO] running `Command { std: "docker" "start" "-a" "66a2fb39188b7f8af9b50290d5726f50703fb683fb2eb0348f935fd1c75cb08c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66a2fb39188b7f8af9b50290d5726f50703fb683fb2eb0348f935fd1c75cb08c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66a2fb39188b7f8af9b50290d5726f50703fb683fb2eb0348f935fd1c75cb08c", kill_on_drop: false }`
[INFO] [stdout] 66a2fb39188b7f8af9b50290d5726f50703fb683fb2eb0348f935fd1c75cb08c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17e3686d9322a4252d311445aee0b0c5be35b336d559b78276b4f7fd2d0495e4
[INFO] running `Command { std: "docker" "start" "-a" "17e3686d9322a4252d311445aee0b0c5be35b336d559b78276b4f7fd2d0495e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking parking_lot_core v0.9.11
[INFO] [stderr]     Checking socket2 v0.6.0
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ark-std v0.4.0
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling async-recursion v1.1.1
[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 zeroize v1.8.1
[INFO] [stderr]     Checking tokio v1.47.1
[INFO] [stderr]     Checking ark-ff v0.4.2
[INFO] [stderr]     Checking ark-poly v0.4.2
[INFO] [stderr]     Checking ark-relations-zkhub v0.4.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `trace` is never read
[INFO] [stdout]    --> src/r1cs/constraint_system.rs:678:21
[INFO] [stdout]     |
[INFO] [stdout] 678 |                     trace = self.constraint_traces[i].as_ref().map_or_else(
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:5
[INFO] [stdout]     |
[INFO] [stdout]   7 |     unused,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ark-ec v0.4.2
[INFO] [stderr]     Checking ark-test-curves v0.4.2
[INFO] [stdout] warning: value assigned to `trace` is never read
[INFO] [stdout]    --> src/r1cs/constraint_system.rs:678:21
[INFO] [stdout]     |
[INFO] [stdout] 678 |                     trace = self.constraint_traces[i].as_ref().map_or_else(
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:5
[INFO] [stdout]     |
[INFO] [stdout]   7 |     unused,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 42.25s
[INFO] running `Command { std: "docker" "inspect" "17e3686d9322a4252d311445aee0b0c5be35b336d559b78276b4f7fd2d0495e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17e3686d9322a4252d311445aee0b0c5be35b336d559b78276b4f7fd2d0495e4", kill_on_drop: false }`
[INFO] [stdout] 17e3686d9322a4252d311445aee0b0c5be35b336d559b78276b4f7fd2d0495e4