[INFO] fetching crate rand_core 0.6.3...
[INFO] checking rand_core-0.6.3 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate rand_core 0.6.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rand_core 0.6.3 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rand_core 0.6.3
[INFO] finished tweaking crates.io crate rand_core 0.6.3
[INFO] tweaked toml for crates.io crate rand_core 0.6.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 700f94976c0e9fcde9db0311033f1901ca2fe31bb24ac8fb2fcf93859f16e86e
[INFO] running `Command { std: "docker" "start" "-a" "700f94976c0e9fcde9db0311033f1901ca2fe31bb24ac8fb2fcf93859f16e86e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "700f94976c0e9fcde9db0311033f1901ca2fe31bb24ac8fb2fcf93859f16e86e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "700f94976c0e9fcde9db0311033f1901ca2fe31bb24ac8fb2fcf93859f16e86e", kill_on_drop: false }`
[INFO] [stdout] 700f94976c0e9fcde9db0311033f1901ca2fe31bb24ac8fb2fcf93859f16e86e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d27096cdf72fde1c8991eb73776b0a83d2cf673c38194fd30a9f5d1f72c701b
[INFO] running `Command { std: "docker" "start" "-a" "3d27096cdf72fde1c8991eb73776b0a83d2cf673c38194fd30a9f5d1f72c701b", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.6.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "3d27096cdf72fde1c8991eb73776b0a83d2cf673c38194fd30a9f5d1f72c701b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d27096cdf72fde1c8991eb73776b0a83d2cf673c38194fd30a9f5d1f72c701b", kill_on_drop: false }`
[INFO] [stdout] 3d27096cdf72fde1c8991eb73776b0a83d2cf673c38194fd30a9f5d1f72c701b