[INFO] fetching crate retworkx 0.4.0...
[INFO] checking retworkx-0.4.0 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate retworkx 0.4.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate retworkx 0.4.0 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking crates.io crate retworkx 0.4.0
[INFO] finished tweaking crates.io crate retworkx 0.4.0
[INFO] tweaked toml for crates.io crate retworkx 0.4.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", 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] d79991f4081ac54b15aa03af51dde4a7f0edaeebb6e1d70a6713e770412b7a78
[INFO] running `Command { std: "docker" "start" "-a" "d79991f4081ac54b15aa03af51dde4a7f0edaeebb6e1d70a6713e770412b7a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d79991f4081ac54b15aa03af51dde4a7f0edaeebb6e1d70a6713e770412b7a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d79991f4081ac54b15aa03af51dde4a7f0edaeebb6e1d70a6713e770412b7a78", kill_on_drop: false }`
[INFO] [stdout] d79991f4081ac54b15aa03af51dde4a7f0edaeebb6e1d70a6713e770412b7a78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 8432da5429d45702f082d203bd39f890bbfbc3a59ee955b4d059ca7897320d8d
[INFO] running `Command { std: "docker" "start" "-a" "8432da5429d45702f082d203bd39f890bbfbc3a59ee955b4d059ca7897320d8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling unindent v0.1.6
[INFO] [stderr]    Compiling inventory v0.1.8
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling pyo3 v0.11.1
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]    Compiling pyo3-derive-backend v0.11.1
[INFO] [stderr]    Compiling ctor v0.1.15
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling inventory-impl v0.1.8
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling pyo3cls v0.11.1
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]     Checking numpy v0.11.0
[INFO] [stderr]     Checking retworkx v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.10s
[INFO] running `Command { std: "docker" "inspect" "8432da5429d45702f082d203bd39f890bbfbc3a59ee955b4d059ca7897320d8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8432da5429d45702f082d203bd39f890bbfbc3a59ee955b4d059ca7897320d8d", kill_on_drop: false }`
[INFO] [stdout] 8432da5429d45702f082d203bd39f890bbfbc3a59ee955b4d059ca7897320d8d