[INFO] cloning repository https://github.com/adriangb/graphlib2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adriangb/graphlib2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadriangb%2Fgraphlib2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadriangb%2Fgraphlib2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 06797dd700f7f94b47e3e6f6af23f0502e839d44
[INFO] checking adriangb/graphlib2 against master#69a5d2481e856a5a18885390b8cf6950b9ff8dd3 for pr-96376
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadriangb%2Fgraphlib2" "/workspace/builds/worker-32/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/adriangb/graphlib2 on toolchain 69a5d2481e856a5a18885390b8cf6950b9ff8dd3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+69a5d2481e856a5a18885390b8cf6950b9ff8dd3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/adriangb/graphlib2
[INFO] finished tweaking git repo https://github.com/adriangb/graphlib2
[INFO] tweaked toml for git repo https://github.com/adriangb/graphlib2 written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] crate git repo https://github.com/adriangb/graphlib2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+69a5d2481e856a5a18885390b8cf6950b9ff8dd3" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pyo3-macros v0.16.0
[INFO] [stderr]   Downloaded pyo3-build-config v0.16.0
[INFO] [stderr]   Downloaded pyo3-ffi v0.16.0
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.16.0
[INFO] [stderr]   Downloaded pyo3 v0.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+69a5d2481e856a5a18885390b8cf6950b9ff8dd3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7749a495fda1cf1ac2e825ab1a8d63cc5695b063b5731a29e86c3ed13c5396ba
[INFO] running `Command { std: "docker" "start" "-a" "7749a495fda1cf1ac2e825ab1a8d63cc5695b063b5731a29e86c3ed13c5396ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7749a495fda1cf1ac2e825ab1a8d63cc5695b063b5731a29e86c3ed13c5396ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7749a495fda1cf1ac2e825ab1a8d63cc5695b063b5731a29e86c3ed13c5396ba", kill_on_drop: false }`
[INFO] [stdout] 7749a495fda1cf1ac2e825ab1a8d63cc5695b063b5731a29e86c3ed13c5396ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+69a5d2481e856a5a18885390b8cf6950b9ff8dd3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 594c3f50d601968a53c35e0d8d57c9bc088577f8ffa3ed45119daafbb3f13b1e
[INFO] running `Command { std: "docker" "start" "-a" "594c3f50d601968a53c35e0d8d57c9bc088577f8ffa3ed45119daafbb3f13b1e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling pyo3-build-config v0.16.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling unindent v0.1.8
[INFO] [stderr]     Checking nohash-hasher v0.2.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling indoc v1.0.4
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling pyo3-ffi v0.16.0
[INFO] [stderr]    Compiling pyo3 v0.16.0
[INFO] [stderr]    Compiling pyo3-macros-backend v0.16.0
[INFO] [stderr]    Compiling pyo3-macros v0.16.0
[INFO] [stderr]     Checking graphlib2 v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 59s
[INFO] running `Command { std: "docker" "inspect" "594c3f50d601968a53c35e0d8d57c9bc088577f8ffa3ed45119daafbb3f13b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "594c3f50d601968a53c35e0d8d57c9bc088577f8ffa3ed45119daafbb3f13b1e", kill_on_drop: false }`
[INFO] [stdout] 594c3f50d601968a53c35e0d8d57c9bc088577f8ffa3ed45119daafbb3f13b1e