[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] testing wangrunji0408/NAT464-rs against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangrunji0408%2FNAT464-rs" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wangrunji0408/NAT464-rs on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-10/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" "+beta-2021-09-08" "fetch" "--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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62c4ef6cd99959aa4d4423b0e3fe8eb2a9db582f7060c54f248a38fb8b2e3ed7
[INFO] running `Command { std: "docker" "start" "-a" "62c4ef6cd99959aa4d4423b0e3fe8eb2a9db582f7060c54f248a38fb8b2e3ed7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62c4ef6cd99959aa4d4423b0e3fe8eb2a9db582f7060c54f248a38fb8b2e3ed7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62c4ef6cd99959aa4d4423b0e3fe8eb2a9db582f7060c54f248a38fb8b2e3ed7", kill_on_drop: false }`
[INFO] [stdout] 62c4ef6cd99959aa4d4423b0e3fe8eb2a9db582f7060c54f248a38fb8b2e3ed7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a88a55887912a777f6a9fa8935b9ab53a0be5fe83ef745cbfc43d69d247fe813
[INFO] running `Command { std: "docker" "start" "-a" "a88a55887912a777f6a9fa8935b9ab53a0be5fe83ef745cbfc43d69d247fe813", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling managed v0.7.1
[INFO] [stderr]    Compiling smoltcp v0.5.0
[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` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a88a55887912a777f6a9fa8935b9ab53a0be5fe83ef745cbfc43d69d247fe813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a88a55887912a777f6a9fa8935b9ab53a0be5fe83ef745cbfc43d69d247fe813", kill_on_drop: false }`
[INFO] [stdout] a88a55887912a777f6a9fa8935b9ab53a0be5fe83ef745cbfc43d69d247fe813