[INFO] fetching crate ark-serialize 0.4.2...
[INFO] checking ark-serialize-0.4.2 against master#18a6d911caba59605eb03db1452848a85d2e5879 for pr-112743
[INFO] extracting crate ark-serialize 0.4.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate ark-serialize 0.4.2 on toolchain 18a6d911caba59605eb03db1452848a85d2e5879
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ark-serialize 0.4.2
[INFO] finished tweaking crates.io crate ark-serialize 0.4.2
[INFO] tweaked toml for crates.io crate ark-serialize 0.4.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "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" "+18a6d911caba59605eb03db1452848a85d2e5879" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ark-test-curves v0.4.2
[INFO] [stderr]   Downloaded blake2 v0.10.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bf71c1de090069e4cb91e4024a9239ddb64a1e6d0993c24dbebf7a078c524b9
[INFO] running `Command { std: "docker" "start" "-a" "4bf71c1de090069e4cb91e4024a9239ddb64a1e6d0993c24dbebf7a078c524b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bf71c1de090069e4cb91e4024a9239ddb64a1e6d0993c24dbebf7a078c524b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bf71c1de090069e4cb91e4024a9239ddb64a1e6d0993c24dbebf7a078c524b9", kill_on_drop: false }`
[INFO] [stdout] 4bf71c1de090069e4cb91e4024a9239ddb64a1e6d0993c24dbebf7a078c524b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0482ae8f4ab5f8110ad1c6e7e1b6a3dd151e0c53a02e4d838556a09e6db9627e
[INFO] running `Command { std: "docker" "start" "-a" "0482ae8f4ab5f8110ad1c6e7e1b6a3dd151e0c53a02e4d838556a09e6db9627e", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking cpufeatures v0.2.8
[INFO] [stderr]     Checking keccak v0.1.4
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]    Compiling ark-serialize-derive v0.4.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling ark-ff-asm v0.4.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking sha2 v0.10.7
[INFO] [stderr]     Checking ark-std v0.4.0
[INFO] [stderr]     Checking ark-serialize v0.4.2
[INFO] [stderr]     Checking ark-serialize v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ark-ff-macros v0.4.2
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]     Checking zeroize v1.6.0
[INFO] [stderr]     Checking ark-ff v0.4.2
[INFO] [stderr]     Checking ark-poly v0.4.2
[INFO] [stderr]     Checking ark-ec v0.4.2
[INFO] [stderr]     Checking ark-test-curves v0.4.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.28s
[INFO] running `Command { std: "docker" "inspect" "0482ae8f4ab5f8110ad1c6e7e1b6a3dd151e0c53a02e4d838556a09e6db9627e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0482ae8f4ab5f8110ad1c6e7e1b6a3dd151e0c53a02e4d838556a09e6db9627e", kill_on_drop: false }`
[INFO] [stdout] 0482ae8f4ab5f8110ad1c6e7e1b6a3dd151e0c53a02e4d838556a09e6db9627e