[INFO] cloning repository https://github.com/BenHall-7/diff-struct
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BenHall-7/diff-struct" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenHall-7%2Fdiff-struct", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenHall-7%2Fdiff-struct'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f257937fcb83e4808fd5c8a387024468eb1260f5
[INFO] checking BenHall-7/diff-struct against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenHall-7%2Fdiff-struct" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BenHall-7/diff-struct on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BenHall-7/diff-struct
[INFO] removed path dependency diff_derive from git repo https://github.com/BenHall-7/diff-struct
[INFO] finished tweaking git repo https://github.com/BenHall-7/diff-struct
[INFO] tweaked toml for git repo https://github.com/BenHall-7/diff-struct written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/BenHall-7/diff-struct already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "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] f07a8b05fc1ff435153ce45fbc8f975cd34efcbdefca6b73af76c732e0d0ab2d
[INFO] running `Command { std: "docker" "start" "-a" "f07a8b05fc1ff435153ce45fbc8f975cd34efcbdefca6b73af76c732e0d0ab2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f07a8b05fc1ff435153ce45fbc8f975cd34efcbdefca6b73af76c732e0d0ab2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f07a8b05fc1ff435153ce45fbc8f975cd34efcbdefca6b73af76c732e0d0ab2d", kill_on_drop: false }`
[INFO] [stdout] f07a8b05fc1ff435153ce45fbc8f975cd34efcbdefca6b73af76c732e0d0ab2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "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] f32dbbac4a9b89f865c30c990c5462e12bd59ffb7e3b2ee3e6f034fe44209143
[INFO] running `Command { std: "docker" "start" "-a" "f32dbbac4a9b89f865c30c990c5462e12bd59ffb7e3b2ee3e6f034fe44209143", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling diff_derive v0.1.2
[INFO] [stderr]     Checking serde v1.0.117
[INFO] [stderr]     Checking diff-struct v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.28s
[INFO] running `Command { std: "docker" "inspect" "f32dbbac4a9b89f865c30c990c5462e12bd59ffb7e3b2ee3e6f034fe44209143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f32dbbac4a9b89f865c30c990c5462e12bd59ffb7e3b2ee3e6f034fe44209143", kill_on_drop: false }`
[INFO] [stdout] f32dbbac4a9b89f865c30c990c5462e12bd59ffb7e3b2ee3e6f034fe44209143