[INFO] fetching crate ark-serialize 0.4.2...
[INFO] checking ark-serialize-0.4.2 against master#a58ec8ff03b3269b20104eb7eae407be48ab95a7 for pr-119849-1
[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 a58ec8ff03b3269b20104eb7eae407be48ab95a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a58ec8ff03b3269b20104eb7eae407be48ab95a7" "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" "+a58ec8ff03b3269b20104eb7eae407be48ab95a7" "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" "+a58ec8ff03b3269b20104eb7eae407be48ab95a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ark-test-curves v0.4.2
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+a58ec8ff03b3269b20104eb7eae407be48ab95a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e27648f312a255e8d5ece1e1bdbfde4c4f0081474180c379d84d53b4fc48dae
[INFO] running `Command { std: "docker" "start" "-a" "1e27648f312a255e8d5ece1e1bdbfde4c4f0081474180c379d84d53b4fc48dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e27648f312a255e8d5ece1e1bdbfde4c4f0081474180c379d84d53b4fc48dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e27648f312a255e8d5ece1e1bdbfde4c4f0081474180c379d84d53b4fc48dae", kill_on_drop: false }`
[INFO] [stdout] 1e27648f312a255e8d5ece1e1bdbfde4c4f0081474180c379d84d53b4fc48dae
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+a58ec8ff03b3269b20104eb7eae407be48ab95a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ae5bb8a7004138478bd681e469563d5d9f175c9ea5aa8a1e3c1e82548ff2b71
[INFO] running `Command { std: "docker" "start" "-a" "3ae5bb8a7004138478bd681e469563d5d9f175c9ea5aa8a1e3c1e82548ff2b71", kill_on_drop: false }`
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking ark-serialize v0.4.2
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking ark-serialize v0.4.2 (/opt/rustwide/workdir)
[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 13.13s
[INFO] running `Command { std: "docker" "inspect" "3ae5bb8a7004138478bd681e469563d5d9f175c9ea5aa8a1e3c1e82548ff2b71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ae5bb8a7004138478bd681e469563d5d9f175c9ea5aa8a1e3c1e82548ff2b71", kill_on_drop: false }`
[INFO] [stdout] 3ae5bb8a7004138478bd681e469563d5d9f175c9ea5aa8a1e3c1e82548ff2b71
[INFO] checking ark-serialize-0.4.2 against try#d09c7205ff47571cec0c9444e568a0020bb083db for pr-119849-1
[INFO] extracting crate ark-serialize 0.4.2 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate ark-serialize 0.4.2 on toolchain d09c7205ff47571cec0c9444e568a0020bb083db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d09c7205ff47571cec0c9444e568a0020bb083db" "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-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d09c7205ff47571cec0c9444e568a0020bb083db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+d09c7205ff47571cec0c9444e568a0020bb083db" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d09c7205ff47571cec0c9444e568a0020bb083db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f57759db7042cf92f9689a02110a7bfafdf7840e16db50d95af1c6bb3ff75048
[INFO] running `Command { std: "docker" "start" "-a" "f57759db7042cf92f9689a02110a7bfafdf7840e16db50d95af1c6bb3ff75048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f57759db7042cf92f9689a02110a7bfafdf7840e16db50d95af1c6bb3ff75048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f57759db7042cf92f9689a02110a7bfafdf7840e16db50d95af1c6bb3ff75048", kill_on_drop: false }`
[INFO] [stdout] f57759db7042cf92f9689a02110a7bfafdf7840e16db50d95af1c6bb3ff75048
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d09c7205ff47571cec0c9444e568a0020bb083db" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a569847f97b599c38026bec2c988f4f9058d27f6ec287e24f9b0e86c530460a
[INFO] running `Command { std: "docker" "start" "-a" "4a569847f97b599c38026bec2c988f4f9058d27f6ec287e24f9b0e86c530460a", kill_on_drop: false }`
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking ark-serialize v0.4.2
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking ark-serialize v0.4.2 (/opt/rustwide/workdir)
[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 13.21s
[INFO] running `Command { std: "docker" "inspect" "4a569847f97b599c38026bec2c988f4f9058d27f6ec287e24f9b0e86c530460a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a569847f97b599c38026bec2c988f4f9058d27f6ec287e24f9b0e86c530460a", kill_on_drop: false }`
[INFO] [stdout] 4a569847f97b599c38026bec2c988f4f9058d27f6ec287e24f9b0e86c530460a