[INFO] fetching crate ark-std 0.4.0...
[INFO] checking ark-std-0.4.0 against master#91c0823ee63e793d990bb9fed898dc95b5d6db51 for pr-125384-2
[INFO] extracting crate ark-std 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ark-std 0.4.0 on toolchain 91c0823ee63e793d990bb9fed898dc95b5d6db51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+91c0823ee63e793d990bb9fed898dc95b5d6db51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ark-std 0.4.0
[INFO] finished tweaking crates.io crate ark-std 0.4.0
[INFO] tweaked toml for crates.io crate ark-std 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+91c0823ee63e793d990bb9fed898dc95b5d6db51" "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 28 packages to latest compatible versions
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.1+wasi-0.2.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+91c0823ee63e793d990bb9fed898dc95b5d6db51" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.5
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.18
[INFO] [stderr]   Downloaded windows-targets v0.48.5
[INFO] [stderr]   Downloaded either v1.12.0
[INFO] [stderr]   Downloaded colored v2.1.0
[INFO] [stderr]   Downloaded rand_core v0.6.4
[INFO] [stderr]   Downloaded lazy_static v1.4.0
[INFO] [stderr]   Downloaded autocfg v1.3.0
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.17
[INFO] [stderr]   Downloaded wasi v0.11.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded getrandom v0.2.15
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.20
[INFO] [stderr]   Downloaded num-traits v0.2.19
[INFO] [stderr]   Downloaded rayon v1.10.0
[INFO] [stderr]   Downloaded rand v0.8.5
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.48.5
[INFO] [stderr]   Downloaded windows_aarch64_gnullvm v0.48.5
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.48.5
[INFO] [stderr]   Downloaded windows_i686_gnu v0.48.5
[INFO] [stderr]   Downloaded windows_i686_msvc v0.48.5
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.48.5
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.48.5
[INFO] [stderr]   Downloaded libc v0.2.155
[INFO] [stderr]   Downloaded rayon-core v1.12.1
[INFO] [stderr]   Downloaded rand_chacha v0.3.1
[INFO] [stderr]   Downloaded cfg-if v1.0.0
[INFO] [stderr]   Downloaded windows-sys v0.48.0
[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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+91c0823ee63e793d990bb9fed898dc95b5d6db51" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c54720c10be22d3b5dd0cac50a2679a4c853d826027cc2cc676226136c803a79
[INFO] running `Command { std: "docker" "start" "-a" "c54720c10be22d3b5dd0cac50a2679a4c853d826027cc2cc676226136c803a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c54720c10be22d3b5dd0cac50a2679a4c853d826027cc2cc676226136c803a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c54720c10be22d3b5dd0cac50a2679a4c853d826027cc2cc676226136c803a79", kill_on_drop: false }`
[INFO] [stdout] c54720c10be22d3b5dd0cac50a2679a4c853d826027cc2cc676226136c803a79
[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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+91c0823ee63e793d990bb9fed898dc95b5d6db51" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a428b8aede5ea3139e85dd99217f54218362a5082a98c73052034b5300c62d9
[INFO] running `Command { std: "docker" "start" "-a" "7a428b8aede5ea3139e85dd99217f54218362a5082a98c73052034b5300c62d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ark-std v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.25s
[INFO] running `Command { std: "docker" "inspect" "7a428b8aede5ea3139e85dd99217f54218362a5082a98c73052034b5300c62d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a428b8aede5ea3139e85dd99217f54218362a5082a98c73052034b5300c62d9", kill_on_drop: false }`
[INFO] [stdout] 7a428b8aede5ea3139e85dd99217f54218362a5082a98c73052034b5300c62d9