[INFO] crate reactor 0.1.4 is already in cache
[INFO] extracting crate reactor 0.1.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/reactor/0.1.4
[INFO] extracting crate reactor 0.1.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/reactor/0.1.4
[INFO] validating manifest of reactor-0.1.4 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of reactor-0.1.4 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/reg/reactor/0.1.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing reactor-0.1.4 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e8af46749908618b924f8fc72f741f2036f82b4327da54633613e8fe20d99548
[INFO] running `"docker" "start" "-a" "e8af46749908618b924f8fc72f741f2036f82b4327da54633613e8fe20d99548"`
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling bitflags v0.1.1
[INFO] [stderr]    Compiling bytes v0.2.11
[INFO] [stderr]    Compiling winapi v0.1.23
[INFO] [stderr]    Compiling nix v0.3.10
[INFO] [stderr]    Compiling encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-korean v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-japanese v1.20141219.5
[INFO] [stderr]    Compiling encoding v0.2.33
[INFO] [stderr]    Compiling mio v0.4.4
[INFO] [stderr]    Compiling tendril v0.1.6
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/context.rs:32:31
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn get_evented(&self) -> &Evented; //&Self::Socket;
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/reactor.rs:119:62
[INFO] [stderr]     |
[INFO] [stderr] 119 |     pub fn deregister(&mut self, token: Token) -> Result<Box<Context>>
[INFO] [stderr]     |                                                              ^^^^^^^ help: use `dyn`: `dyn Context`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reactor_ctrl.rs:32:28
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub type ConnHandler<'a> = FnMut(ConnResult, &mut ReactorCtrl) -> Option<Box<Context>> + 'a;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(ConnResult, &mut ReactorCtrl) -> Option<Box<Context>> + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reactor_ctrl.rs:32:78
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub type ConnHandler<'a> = FnMut(ConnResult, &mut ReactorCtrl) -> Option<Box<Context>> + 'a;
[INFO] [stderr]    |                                                                              ^^^^^^^ help: use `dyn`: `dyn Context`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reactor_ctrl.rs:33:31
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub type TimeoutHandler<'a> = FnMut(Token, &mut ReactorCtrl) + 'a;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Token, &mut ReactorCtrl) + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reactor_ctrl.rs:39:19
[INFO] [stderr]    |
[INFO] [stderr] 39 |     Connected(Box<Context>),
[INFO] [stderr]    |                   ^^^^^^^ help: use `dyn`: `dyn Context`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/reactor_ctrl.rs:168:23
[INFO] [stderr]     |
[INFO] [stderr] 168 |         let foo : Box<Context> = Box::new(ctx);
[INFO] [stderr]     |                       ^^^^^^^ help: use `dyn`: `dyn Context`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/reactor_ctrl.rs:172:65
[INFO] [stderr]     |
[INFO] [stderr] 172 |         try!(self.event_loop.register_opt(foo.get_evented() as &Evented, token, foo.get_interest(), PollOpt::edge()));
[INFO] [stderr]     |                                                                 ^^^^^^^ help: use `dyn`: `dyn Evented`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/reactor_ctrl.rs:181:62
[INFO] [stderr]     |
[INFO] [stderr] 181 |     pub fn deregister(&mut self, token: Token) -> Result<Box<Context>>
[INFO] [stderr]     |                                                              ^^^^^^^ help: use `dyn`: `dyn Context`
[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" "e8af46749908618b924f8fc72f741f2036f82b4327da54633613e8fe20d99548"`
[INFO] running `"docker" "rm" "-f" "e8af46749908618b924f8fc72f741f2036f82b4327da54633613e8fe20d99548"`
[INFO] [stdout] e8af46749908618b924f8fc72f741f2036f82b4327da54633613e8fe20d99548