[INFO] updating cached repository https://github.com/yarrow/slightly-smaller-setop-for-question
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4230686b714bd32da42d35f6af8d140c7ab8bcf
[INFO] checking yarrow/slightly-smaller-setop-for-question against try#5fdfba63a96c5e8ae0ebf6b8b66853110277087d for pr-73166
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyarrow%2Fslightly-smaller-setop-for-question" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yarrow/slightly-smaller-setop-for-question on toolchain 5fdfba63a96c5e8ae0ebf6b8b66853110277087d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yarrow/slightly-smaller-setop-for-question
[INFO] finished tweaking git repo https://github.com/yarrow/slightly-smaller-setop-for-question
[INFO] tweaked toml for git repo https://github.com/yarrow/slightly-smaller-setop-for-question written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/yarrow/slightly-smaller-setop-for-question already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 218f325e9a4c8c243b3ef132d9de2e41991fcd73fbafc1ba9313979e8b0e6131
[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" "218f325e9a4c8c243b3ef132d9de2e41991fcd73fbafc1ba9313979e8b0e6131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "218f325e9a4c8c243b3ef132d9de2e41991fcd73fbafc1ba9313979e8b0e6131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "218f325e9a4c8c243b3ef132d9de2e41991fcd73fbafc1ba9313979e8b0e6131", kill_on_drop: false }`
[INFO] [stdout] 218f325e9a4c8c243b3ef132d9de2e41991fcd73fbafc1ba9313979e8b0e6131
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5fdfba63a96c5e8ae0ebf6b8b66853110277087d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d722cfea7b3358a80e47a1215dbb221688b7f3f629e3f4c6a12a04b6695b6bfb
[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" "d722cfea7b3358a80e47a1215dbb221688b7f3f629e3f4c6a12a04b6695b6bfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.11
[INFO] [stderr]    Compiling rental-impl v0.5.2
[INFO] [stderr]     Checking rental v0.5.2
[INFO] [stderr]     Checking minimal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.97s
[INFO] running `Command { std: "docker" "inspect" "d722cfea7b3358a80e47a1215dbb221688b7f3f629e3f4c6a12a04b6695b6bfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d722cfea7b3358a80e47a1215dbb221688b7f3f629e3f4c6a12a04b6695b6bfb", kill_on_drop: false }`
[INFO] [stdout] d722cfea7b3358a80e47a1215dbb221688b7f3f629e3f4c6a12a04b6695b6bfb