[INFO] cloning repository https://github.com/carletes/netns-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carletes/netns-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarletes%2Fnetns-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarletes%2Fnetns-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af424ca072a1817d8a9de55a50dde9224673e62e
[INFO] checking carletes/netns-rs against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarletes%2Fnetns-rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/carletes/netns-rs on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/carletes/netns-rs
[INFO] finished tweaking git repo https://github.com/carletes/netns-rs
[INFO] tweaked toml for git repo https://github.com/carletes/netns-rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/carletes/netns-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded netlink-sys v0.2.0
[INFO] [stderr]   Downloaded netlink-packet-route v0.2.1
[INFO] [stderr]   Downloaded netlink-packet-utils v0.1.1
[INFO] [stderr]   Downloaded netlink-packet-core v0.1.0
[INFO] [stderr]   Downloaded syn v1.0.21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] 450ddaceb8a46942b273546048cbe7218ac33ca6228196e3e08d43ac8b78481e
[INFO] running `Command { std: "docker" "start" "-a" "450ddaceb8a46942b273546048cbe7218ac33ca6228196e3e08d43ac8b78481e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "450ddaceb8a46942b273546048cbe7218ac33ca6228196e3e08d43ac8b78481e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "450ddaceb8a46942b273546048cbe7218ac33ca6228196e3e08d43ac8b78481e", kill_on_drop: false }`
[INFO] [stdout] 450ddaceb8a46942b273546048cbe7218ac33ca6228196e3e08d43ac8b78481e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 833859716f2ba54085fa64f970d1ad4e89f256c490fa35bbf07a4dd5449891cd
[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" "833859716f2ba54085fa64f970d1ad4e89f256c490fa35bbf07a4dd5449891cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.21
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking addr2line v0.12.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]     Checking backtrace v0.3.48
[INFO] [stderr]     Checking netlink-sys v0.2.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling paste-impl v0.1.12
[INFO] [stderr]    Compiling thiserror-impl v1.0.18
[INFO] [stderr]     Checking paste v0.1.12
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking netlink-packet-utils v0.1.1
[INFO] [stderr]     Checking thiserror v1.0.18
[INFO] [stderr]     Checking netlink-packet-core v0.1.0
[INFO] [stderr]     Checking netlink-packet-route v0.2.1
[INFO] [stderr]     Checking netns-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.82s
[INFO] running `Command { std: "docker" "inspect" "833859716f2ba54085fa64f970d1ad4e89f256c490fa35bbf07a4dd5449891cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "833859716f2ba54085fa64f970d1ad4e89f256c490fa35bbf07a4dd5449891cd", kill_on_drop: false }`
[INFO] [stdout] 833859716f2ba54085fa64f970d1ad4e89f256c490fa35bbf07a4dd5449891cd