[INFO] cloning repository https://github.com/wangrunji0408/NAT464-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wangrunji0408/NAT464-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangrunji0408%2FNAT464-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangrunji0408%2FNAT464-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac85a857fa49f9adbd08b79e97752595d582aa0f
[INFO] checking wangrunji0408/NAT464-rs against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangrunji0408%2FNAT464-rs" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wangrunji0408/NAT464-rs on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wangrunji0408/NAT464-rs
[INFO] finished tweaking git repo https://github.com/wangrunji0408/NAT464-rs
[INFO] tweaked toml for git repo https://github.com/wangrunji0408/NAT464-rs written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/wangrunji0408/NAT464-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pcap-file v0.10.0
[INFO] [stderr]   Downloaded managed v0.7.1
[INFO] [stderr]   Downloaded smoltcp v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35be71889615bf6a3ac364a9c09a05b9e820912467feb269ad558f477a767ec1
[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" "35be71889615bf6a3ac364a9c09a05b9e820912467feb269ad558f477a767ec1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35be71889615bf6a3ac364a9c09a05b9e820912467feb269ad558f477a767ec1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35be71889615bf6a3ac364a9c09a05b9e820912467feb269ad558f477a767ec1", kill_on_drop: false }`
[INFO] [stdout] 35be71889615bf6a3ac364a9c09a05b9e820912467feb269ad558f477a767ec1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] c405b8f632732992e46dcdc60f734e72b8c15820299ef36b3e3cb29b7935d3ba
[INFO] running `Command { std: "docker" "start" "-a" "c405b8f632732992e46dcdc60f734e72b8c15820299ef36b3e3cb29b7935d3ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking managed v0.7.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking smoltcp v0.5.0
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking pcap-file v0.10.0
[INFO] [stdout] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/smoltcp-0.5.0/src/socket/ref_.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl<'a, T: Session + 'a> Ref<'a, T> {
[INFO] [stdout]    |      -- lifetime `'a` defined here
[INFO] [stdout] ...
[INFO] [stdout] 61 |         ref_.socket
[INFO] [stdout]    |         ^^^^^^^^^^^ returning this value requires that `*ref_.socket` is borrowed for `'a`
[INFO] [stdout] 62 |     }
[INFO] [stdout]    |     - here, drop of `ref_` needs exclusive access to `*ref_.socket`, because the type `ref_::Ref<'_, T>` implements the `Drop` trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0713`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smoltcp`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c405b8f632732992e46dcdc60f734e72b8c15820299ef36b3e3cb29b7935d3ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c405b8f632732992e46dcdc60f734e72b8c15820299ef36b3e3cb29b7935d3ba", kill_on_drop: false }`
[INFO] [stdout] c405b8f632732992e46dcdc60f734e72b8c15820299ef36b3e3cb29b7935d3ba