[INFO] crate reactor 0.1.4 is already in cache
[INFO] checking reactor-0.1.4 against beta-2019-10-27 for pr-65897
[INFO] extracting crate reactor 0.1.4 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate reactor 0.1.4 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate reactor 0.1.4
[INFO] finished tweaking crates.io crate reactor 0.1.4
[INFO] tweaked toml for crates.io crate reactor 0.1.4 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f66068a9ce7fa5d65e8649ad282d822274a24023ca48dd53398c5500bcb4fc8e
[INFO] running `"docker" "start" "-a" "f66068a9ce7fa5d65e8649ad282d822274a24023ca48dd53398c5500bcb4fc8e"`
[INFO] [stderr]     Checking bitflags v0.1.1
[INFO] [stderr]     Checking bytes v0.2.11
[INFO] [stderr]     Checking winapi v0.1.23
[INFO] [stderr]     Checking nix v0.3.10
[INFO] [stderr]     Checking mio v0.4.4
[INFO] [stderr]     Checking reactor v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::net::lookup_host`
[INFO] [stderr]  --> src/reactor_ctrl.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 |                lookup_host,
[INFO] [stderr]   |                ^^^^^^^^^^^ no `lookup_host` in `net`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | #![feature(lookup_host)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::net::lookup_host`
[INFO] [stderr]  --> src/reactor_ctrl.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 |                lookup_host,
[INFO] [stderr]   |                ^^^^^^^^^^^ no `lookup_host` in `net`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | #![feature(lookup_host)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `reactor`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `reactor`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f66068a9ce7fa5d65e8649ad282d822274a24023ca48dd53398c5500bcb4fc8e"`
[INFO] running `"docker" "rm" "-f" "f66068a9ce7fa5d65e8649ad282d822274a24023ca48dd53398c5500bcb4fc8e"`
[INFO] [stdout] f66068a9ce7fa5d65e8649ad282d822274a24023ca48dd53398c5500bcb4fc8e