[INFO] crate reactor 0.1.4 is already in cache
[INFO] extracting crate reactor 0.1.4 into work/ex/beta-1.37-6/sources/1.36.0/reg/reactor/0.1.4
[INFO] extracting crate reactor 0.1.4 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/reactor/0.1.4
[INFO] validating manifest of reactor-0.1.4 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of reactor-0.1.4 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing reactor-0.1.4
[INFO] finished frobbing reactor-0.1.4
[INFO] frobbed toml for reactor-0.1.4 written to work/ex/beta-1.37-6/sources/1.36.0/reg/reactor/0.1.4/Cargo.toml
[INFO] started frobbing reactor-0.1.4
[INFO] finished frobbing reactor-0.1.4
[INFO] frobbed toml for reactor-0.1.4 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/reactor/0.1.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing reactor-0.1.4 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/reactor/0.1.4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] b8131720a1b8050091c5c84b72b014a73da2065d3dd06b3e8aebc635f1a9127d
[INFO] running `"docker" "start" "-a" "b8131720a1b8050091c5c84b72b014a73da2065d3dd06b3e8aebc635f1a9127d"`
[INFO] [stderr]    Compiling bitflags v0.1.1
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling bytes v0.2.11
[INFO] [stderr]    Compiling winapi v0.1.23
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]    Compiling nix v0.3.10
[INFO] [stderr]    Compiling tendril v0.1.6
[INFO] [stderr]    Compiling mio v0.4.4
[INFO] [stderr]    Compiling reactor v0.1.4 (/opt/crater/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 stable release channel
[INFO] [stderr]    --> src/lib.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | #![feature(lookup_host)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/reactor.rs:41:25
[INFO] [stderr]    |
[INFO] [stderr] 41 |                         (cfg.max_connections * cfg.timers_per_connection))).unwrap();
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Evented`
[INFO] [stderr]  --> src/reactor.rs:4:19
[INFO] [stderr]   |
[INFO] [stderr] 4 | use mio::{Sender, Evented, EventLoop, EventLoopConfig, Token, TimerResult, Timeout};
[INFO] [stderr]   |                   ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Context`
[INFO] [stderr]  --> src/reactor_handler.rs:9:15
[INFO] [stderr]   |
[INFO] [stderr] 9 | use context::{Context, EventType};
[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: Could not compile `reactor`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b8131720a1b8050091c5c84b72b014a73da2065d3dd06b3e8aebc635f1a9127d"`
[INFO] running `"docker" "rm" "-f" "b8131720a1b8050091c5c84b72b014a73da2065d3dd06b3e8aebc635f1a9127d"`
[INFO] [stdout] b8131720a1b8050091c5c84b72b014a73da2065d3dd06b3e8aebc635f1a9127d