[INFO] fetching crate retworkx 0.8.0...
[INFO] checking retworkx-0.8.0 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate retworkx 0.8.0 into /workspace/builds/worker-2-tc1/source
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate retworkx 0.8.0
[INFO] finished tweaking crates.io crate retworkx 0.8.0
[INFO] tweaked toml for crates.io crate retworkx 0.8.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate retworkx 0.8.0 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 61 packages to latest compatible versions
[INFO] [stderr]       Adding fixedbitset v0.2.0 (available: v0.5.7)
[INFO] [stderr]       Adding hashbrown v0.9.1 (available: v0.16.0)
[INFO] [stderr]       Adding indoc-impl v0.3.6 (available: v0.3.7)
[INFO] [stderr]       Adding ndarray v0.13.1 (available: v0.17.1)
[INFO] [stderr]       Adding numpy v0.12.2 (available: v0.27.0)
[INFO] [stderr]       Adding petgraph v0.5.1 (available: v0.8.3)
[INFO] [stderr]       Adding pyo3 v0.12.4 (available: v0.27.1)
[INFO] [stderr]       Adding pyo3-derive-backend v0.12.4 (available: v0.12.5)
[INFO] [stderr]       Adding pyo3cls v0.12.4 (available: v0.12.5)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_pcg v0.3.1 (available: v0.9.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded inventory v0.1.11
[INFO] [stderr]   Downloaded numpy v0.12.2
[INFO] [stderr]   Downloaded indoc-impl v0.3.6
[INFO] [stderr]   Downloaded inventory-impl v0.1.11
[INFO] [stderr]   Downloaded pyo3cls v0.12.4
[INFO] [stderr]   Downloaded indoc v0.3.6
[INFO] [stderr]   Downloaded pyo3-derive-backend v0.12.4
[INFO] [stderr]   Downloaded pyo3 v0.12.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a1abee586ff4957bc28e306ef128ed0b41ed6f39ab042131dac0a6288002b9b
[INFO] running `Command { std: "docker" "start" "-a" "4a1abee586ff4957bc28e306ef128ed0b41ed6f39ab042131dac0a6288002b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a1abee586ff4957bc28e306ef128ed0b41ed6f39ab042131dac0a6288002b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a1abee586ff4957bc28e306ef128ed0b41ed6f39ab042131dac0a6288002b9b", kill_on_drop: false }`
[INFO] [stdout] 4a1abee586ff4957bc28e306ef128ed0b41ed6f39ab042131dac0a6288002b9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 271d4ac082cc847db35beac1d3dbb456d67855d199fc20b7c0eb54e5a69e7f9f
[INFO] running `Command { std: "docker" "start" "-a" "271d4ac082cc847db35beac1d3dbb456d67855d199fc20b7c0eb54e5a69e7f9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling inventory v0.1.11
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]    Compiling pyo3 v0.12.4
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking ahash v0.4.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling ghost v0.1.20
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling pyo3-derive-backend v0.12.4
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]    Compiling inventory-impl v0.1.11
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]    Compiling pyo3cls v0.12.4
[INFO] [stderr]     Checking numpy v0.12.2
[INFO] [stderr]     Checking retworkx v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.60s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: pyo3 v0.12.4, pyo3-derive-backend v0.12.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 9`
[INFO] running `Command { std: "docker" "inspect" "271d4ac082cc847db35beac1d3dbb456d67855d199fc20b7c0eb54e5a69e7f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "271d4ac082cc847db35beac1d3dbb456d67855d199fc20b7c0eb54e5a69e7f9f", kill_on_drop: false }`
[INFO] [stdout] 271d4ac082cc847db35beac1d3dbb456d67855d199fc20b7c0eb54e5a69e7f9f