[INFO] fetching crate arkworks-utils 1.0.1...
[INFO] checking arkworks-utils-1.0.1 against master#b3bd7058c139e71bae0862ef8f8ac936208873e9 for pr-123752
[INFO] extracting crate arkworks-utils 1.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate arkworks-utils 1.0.1 on toolchain b3bd7058c139e71bae0862ef8f8ac936208873e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arkworks-utils 1.0.1
[INFO] finished tweaking crates.io crate arkworks-utils 1.0.1
[INFO] tweaked toml for crates.io crate arkworks-utils 1.0.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 42 packages
[INFO] [stderr]       Adding ark-ff v0.3.0 (latest: v0.4.2)
[INFO] [stderr]       Adding ark-ff-asm v0.3.0 (latest: v0.4.2)
[INFO] [stderr]       Adding ark-ff-macros v0.3.0 (latest: v0.4.2)
[INFO] [stderr]       Adding ark-serialize v0.3.0 (latest: v0.4.2)
[INFO] [stderr]       Adding ark-std v0.3.0 (latest: v0.4.0)
[INFO] [stderr]       Adding digest v0.9.0 (latest: v0.10.7)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding rustc_version v0.3.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.11.0 (latest: v1.0.22)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ark-ff v0.3.0
[INFO] [stderr]   Downloaded ark-ff-asm v0.3.0
[INFO] [stderr]   Downloaded ark-ff-macros v0.3.0
[INFO] [stderr]   Downloaded ark-serialize v0.3.0
[INFO] [stderr]   Downloaded ark-std v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6c9fe3dfa2957152a1b6cb7909c7d7aff73f489b9c64d9bfbd46ad0ad1b8301
[INFO] running `Command { std: "docker" "start" "-a" "c6c9fe3dfa2957152a1b6cb7909c7d7aff73f489b9c64d9bfbd46ad0ad1b8301", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6c9fe3dfa2957152a1b6cb7909c7d7aff73f489b9c64d9bfbd46ad0ad1b8301", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6c9fe3dfa2957152a1b6cb7909c7d7aff73f489b9c64d9bfbd46ad0ad1b8301", kill_on_drop: false }`
[INFO] [stdout] c6c9fe3dfa2957152a1b6cb7909c7d7aff73f489b9c64d9bfbd46ad0ad1b8301
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f0a3e8b6f4cfd4aa2ff82d14af550e6e9edc8d273c5c219e2b6ab228f3b7251
[INFO] running `Command { std: "docker" "start" "-a" "2f0a3e8b6f4cfd4aa2ff82d14af550e6e9edc8d273c5c219e2b6ab228f3b7251", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]     Checking ark-std v0.3.0
[INFO] [stderr]     Checking ark-serialize v0.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling ark-ff-asm v0.3.0
[INFO] [stderr]    Compiling ark-ff-macros v0.3.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]    Compiling pest v2.7.9
[INFO] [stderr]    Compiling semver-parser v0.10.2
[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 arkworks-utils v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.90s
[INFO] running `Command { std: "docker" "inspect" "2f0a3e8b6f4cfd4aa2ff82d14af550e6e9edc8d273c5c219e2b6ab228f3b7251", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f0a3e8b6f4cfd4aa2ff82d14af550e6e9edc8d273c5c219e2b6ab228f3b7251", kill_on_drop: false }`
[INFO] [stdout] 2f0a3e8b6f4cfd4aa2ff82d14af550e6e9edc8d273c5c219e2b6ab228f3b7251
