[INFO] fetching crate rand_core 0.6.3...
[INFO] checking rand_core-0.6.3 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate rand_core 0.6.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate rand_core 0.6.3 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4277ddb56e7c0779f3c34fb80929d8cf2ee0caa6d82b4998e3c9e9a9ed2feb9a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4277ddb56e7c0779f3c34fb80929d8cf2ee0caa6d82b4998e3c9e9a9ed2feb9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4277ddb56e7c0779f3c34fb80929d8cf2ee0caa6d82b4998e3c9e9a9ed2feb9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4277ddb56e7c0779f3c34fb80929d8cf2ee0caa6d82b4998e3c9e9a9ed2feb9a", kill_on_drop: false }`
[INFO] [stdout] 4277ddb56e7c0779f3c34fb80929d8cf2ee0caa6d82b4998e3c9e9a9ed2feb9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6eeacd849b9603636a85091b6b8a79b35fc9cad547f23829ae1355e5ff1a0da2
[INFO] running `Command { std: "docker" "start" "-a" "6eeacd849b9603636a85091b6b8a79b35fc9cad547f23829ae1355e5ff1a0da2", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.6.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "6eeacd849b9603636a85091b6b8a79b35fc9cad547f23829ae1355e5ff1a0da2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eeacd849b9603636a85091b6b8a79b35fc9cad547f23829ae1355e5ff1a0da2", kill_on_drop: false }`
[INFO] [stdout] 6eeacd849b9603636a85091b6b8a79b35fc9cad547f23829ae1355e5ff1a0da2