[INFO] updating cached repository wyq756543431/sunflower
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wyq756543431/sunflower
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wyq756543431/sunflower" "work/ex/beta-1.38-1/sources/1.37.0/gh/wyq756543431/sunflower"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wyq756543431/sunflower'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wyq756543431/sunflower" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wyq756543431/sunflower"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wyq756543431/sunflower'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f8f76bc5b2faf6d4fc6f1a371c71797f94e3e213
[INFO] sha for GitHub repo wyq756543431/sunflower: f8f76bc5b2faf6d4fc6f1a371c71797f94e3e213
[INFO] validating manifest of wyq756543431/sunflower 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 wyq756543431/sunflower 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 wyq756543431/sunflower
[INFO] finished frobbing wyq756543431/sunflower
[INFO] frobbed toml for wyq756543431/sunflower written to work/ex/beta-1.38-1/sources/1.37.0/gh/wyq756543431/sunflower/Cargo.toml
[INFO] started frobbing wyq756543431/sunflower
[INFO] finished frobbing wyq756543431/sunflower
[INFO] frobbed toml for wyq756543431/sunflower written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wyq756543431/sunflower/Cargo.toml
[INFO] crate wyq756543431/sunflower already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing wyq756543431/sunflower 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wyq756543431/sunflower:/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] 284f969b7cf737b61b07a749064cdd5783f26007234dfb2fe6a98769d721d3df
[INFO] running `"docker" "start" "-a" "284f969b7cf737b61b07a749064cdd5783f26007234dfb2fe6a98769d721d3df"`
[INFO] [stderr]    Compiling num-traits v0.1.42
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling url v1.6.0
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.6.0/src/form_urlencoded.rs:261:40
[INFO] [stderr]     |
[INFO] [stderr] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 261 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling serde_json v1.0.9
[INFO] [stderr]    Compiling num-iter v0.1.34
[INFO] [stderr]    Compiling num v0.1.41
[INFO] [stderr]    Compiling mio v0.6.12
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]    Compiling sunflower v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[macro_use] extern crate serde_derive;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/connection.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::result::Result`
[INFO] [stderr]  --> src/connection.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::result::Result;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::net::ToSocketAddrs`
[INFO] [stderr]  --> src/connection.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::ToSocketAddrs;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/connection.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/connection.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Formatter`, `self`
[INFO] [stderr]   --> src/connection.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fmt::{self, Formatter};
[INFO] [stderr]    |                ^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert::From`
[INFO] [stderr]   --> src/connection.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::convert::From;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::net::Shutdown`
[INFO] [stderr]   --> src/connection.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::net::Shutdown;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TcpListener`
[INFO] [stderr]   --> src/connection.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 | use mio::net::{TcpListener, TcpStream};
[INFO] [stderr]    |                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mio::deprecated::TryRead`
[INFO] [stderr]   --> src/connection.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use mio::deprecated::TryRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Receiver`, `self`
[INFO] [stderr]   --> src/connection.rs:16:20
[INFO] [stderr]    |
[INFO] [stderr] 16 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                    ^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Event`, `Events`
[INFO] [stderr]   --> src/connection.rs:17:40
[INFO] [stderr]    |
[INFO] [stderr] 17 | use mio::{Token, Ready, PollOpt, Poll, Events, Event, Evented};
[INFO] [stderr]    |                                        ^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/server.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::result::Result`
[INFO] [stderr]  --> src/server.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::result::Result;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::net::ToSocketAddrs`
[INFO] [stderr]  --> src/server.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::ToSocketAddrs;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/server.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/server.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Formatter`, `self`
[INFO] [stderr]   --> src/server.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::fmt::{self, Formatter};
[INFO] [stderr]    |                ^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TcpStream`
[INFO] [stderr]   --> src/server.rs:13:29
[INFO] [stderr]    |
[INFO] [stderr] 13 | use mio::net::{TcpListener, TcpStream};
[INFO] [stderr]    |                             ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mio::deprecated::TryRead`
[INFO] [stderr]   --> src/server.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use mio::deprecated::TryRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server.rs:26:23
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub type Handle = Box<Fn(Arc<Mutex<StreamData>>) + Send + Sync + 'static>;
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Arc<Mutex<StreamData>>) + Send + Sync + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:58:32
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Request`
[INFO] [stderr]  --> src/app/mod.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 | use http::{Http, Request, Response};
[INFO] [stderr]   |                  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Value`
[INFO] [stderr]  --> src/app/mod.rs:6:30
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::context::{Context, Value};
[INFO] [stderr]   |                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/app/mod.rs:16:19
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub type Handle = Fn(&mut Context) + Send + Sync + 'static;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Context) + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `error::MioResult`
[INFO] [stderr]  --> src/stream_data.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use error::MioResult;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/util/threadpool.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 | type Truck<'a> = Box<FnBox + Send + 'a>;
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::deprecated::TryRead': update to use `Poll`
[INFO] [stderr]   --> src/connection.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use mio::deprecated::TryRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:16:20
[INFO] [stderr]    |
[INFO] [stderr] 16 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Receiver': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:16:26
[INFO] [stderr]    |
[INFO] [stderr] 16 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                          ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:16:36
[INFO] [stderr]    |
[INFO] [stderr] 16 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                                    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     tx: Sender<ConnEvent>,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:38:57
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn new(token: Token, tcp_stream: TcpStream, tx: Sender<ConnEvent>, thread_pool: Rc<Pool>, handle: Arc<Handle>,) -> Connection {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::deprecated::TryRead': update to use `Poll`
[INFO] [stderr]   --> src/server.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use mio::deprecated::TryRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Receiver': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:15:26
[INFO] [stderr]    |
[INFO] [stderr] 15 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                          ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:15:36
[INFO] [stderr]    |
[INFO] [stderr] 15 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                                    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     tx: Sender<ConnEvent>,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Receiver': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     rx: Receiver<ConnEvent>,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::channel': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:43:24
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let (tx, rx) = channel::channel::<ConnEvent>();
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender::<T>::send': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:95:16
[INFO] [stderr]    |
[INFO] [stderr] 95 |             tx.send(ConnEvent::Write(token)).is_ok();
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender::<T>::send': use mio-extras instead
[INFO] [stderr]    --> src/connection.rs:118:17
[INFO] [stderr]     |
[INFO] [stderr] 118 |         self.tx.send(ConnEvent::Read(self.token)).is_ok();
[INFO] [stderr]     |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::hup': use UnixReady instead
[INFO] [stderr]   --> src/server.rs:81:49
[INFO] [stderr]    |
[INFO] [stderr] 81 |                             Ready::readable() | Ready::hup(),
[INFO] [stderr]    |                                                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Receiver::<T>::try_recv': use mio-extras instead
[INFO] [stderr]    --> src/server.rs:102:27
[INFO] [stderr]     |
[INFO] [stderr] 102 |             match self.rx.try_recv() {
[INFO] [stderr]     |                           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::hup': use UnixReady instead
[INFO] [stderr]    --> src/server.rs:109:57
[INFO] [stderr]     |
[INFO] [stderr] 109 |                                     Ready::writable() | Ready::hup(),
[INFO] [stderr]     |                                                         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::hup': use UnixReady instead
[INFO] [stderr]    --> src/server.rs:118:57
[INFO] [stderr]     |
[INFO] [stderr] 118 |                                     Ready::readable() | Ready::hup(),
[INFO] [stderr]     |                                                         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::is_hup': use UnixReady instead
[INFO] [stderr]    --> src/server.rs:144:30
[INFO] [stderr]     |
[INFO] [stderr] 144 |         if event.readiness().is_hup() || event.readiness().is_error() {
[INFO] [stderr]     |                              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::is_error': use UnixReady instead
[INFO] [stderr]    --> src/server.rs:144:60
[INFO] [stderr]     |
[INFO] [stderr] 144 |         if event.readiness().is_hup() || event.readiness().is_error() {
[INFO] [stderr]     |                                                            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
[INFO] [stderr]   --> src/app/mod.rs:86:42
[INFO] [stderr]    |
[INFO] [stderr] 86 |                                     path.trim_right_matches('/').to_owned()
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/error.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/app/mod.rs:113:17
[INFO] [stderr]     |
[INFO] [stderr] 113 |             Err(err) => {
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/server.rs:78:30
[INFO] [stderr]    |
[INFO] [stderr] 78 |                         let (mut tcp_stream, _) = self.listener.accept().unwrap();
[INFO] [stderr]    |                              ----^^^^^^^^^^
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/app/route.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut route = Route {
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `events`
[INFO] [stderr]   --> src/server.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     events: Events,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute_always`
[INFO] [stderr]   --> src/app/middleware.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn execute_always(&self, context: &mut Context) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `prefix`
[INFO] [stderr]  --> src/app/group.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     prefix: String,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/app/group.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | /     fn add<H>(&mut self, method: &str, pattern: &str, handle: H) -> &mut Route
[INFO] [stderr] 23 | |         where H: Fn(&mut Context) + Send + Sync + 'static
[INFO] [stderr] 24 | |     {
[INFO] [stderr] 25 | |         let route = Route::new(
[INFO] [stderr] ...  |
[INFO] [stderr] 32 | |         self.routes.last_mut().unwrap()
[INFO] [stderr] 33 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/app/group.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 | /     pub fn get<H>(&mut self, pattern: &str, handle: H) -> &mut Route
[INFO] [stderr] 36 | |         where H: Fn(&mut Context) + Send + Sync + 'static
[INFO] [stderr] 37 | |     {
[INFO] [stderr] 38 | |         self.add(&stringify!(get).to_uppercase(), pattern, handle)
[INFO] [stderr] 39 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `begin`
[INFO] [stderr]   --> src/app/mod.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     begin: Vec<Middleware>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `before`
[INFO] [stderr]   --> src/app/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     before: Vec<Middleware>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `after`
[INFO] [stderr]   --> src/app/mod.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     after: Vec<Middleware>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `finish`
[INFO] [stderr]   --> src/app/mod.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     finish: Vec<Middleware>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/connection.rs:95:13
[INFO] [stderr]    |
[INFO] [stderr] 95 |             tx.send(ConnEvent::Write(token)).is_ok();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/connection.rs:118:9
[INFO] [stderr]     |
[INFO] [stderr] 118 |         self.tx.send(ConnEvent::Read(self.token)).is_ok();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/server.rs:87:25
[INFO] [stderr]    |
[INFO] [stderr] 87 |                         self.channel();
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/server.rs:90:25
[INFO] [stderr]    |
[INFO] [stderr] 90 |                         self.connect(event, token);
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/server.rs:146:17
[INFO] [stderr]     |
[INFO] [stderr] 146 |                 self.poll.deregister(&conn.tcp_stream);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/server.rs:170:17
[INFO] [stderr]     |
[INFO] [stderr] 170 |                 conn.tcp_stream.shutdown(Shutdown::Both);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.45s
[INFO] running `"docker" "inspect" "284f969b7cf737b61b07a749064cdd5783f26007234dfb2fe6a98769d721d3df"`
[INFO] running `"docker" "rm" "-f" "284f969b7cf737b61b07a749064cdd5783f26007234dfb2fe6a98769d721d3df"`
[INFO] [stdout] 284f969b7cf737b61b07a749064cdd5783f26007234dfb2fe6a98769d721d3df
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wyq756543431/sunflower:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] fb09bab674e80592cc4cfc82b51abf46d9a7b3a42cf1338c3c6a7ee3bc5e7179
[INFO] running `"docker" "start" "-a" "fb09bab674e80592cc4cfc82b51abf46d9a7b3a42cf1338c3c6a7ee3bc5e7179"`
[INFO] [stderr]    Compiling sunflower v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[macro_use] extern crate serde_derive;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/connection.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::result::Result`
[INFO] [stderr]  --> src/connection.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::result::Result;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::net::ToSocketAddrs`
[INFO] [stderr]  --> src/connection.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::ToSocketAddrs;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/connection.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/connection.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Formatter`, `self`
[INFO] [stderr]   --> src/connection.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fmt::{self, Formatter};
[INFO] [stderr]    |                ^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert::From`
[INFO] [stderr]   --> src/connection.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::convert::From;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::net::Shutdown`
[INFO] [stderr]   --> src/connection.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::net::Shutdown;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TcpListener`
[INFO] [stderr]   --> src/connection.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 | use mio::net::{TcpListener, TcpStream};
[INFO] [stderr]    |                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mio::deprecated::TryRead`
[INFO] [stderr]   --> src/connection.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use mio::deprecated::TryRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Receiver`, `self`
[INFO] [stderr]   --> src/connection.rs:16:20
[INFO] [stderr]    |
[INFO] [stderr] 16 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                    ^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Event`, `Events`
[INFO] [stderr]   --> src/connection.rs:17:40
[INFO] [stderr]    |
[INFO] [stderr] 17 | use mio::{Token, Ready, PollOpt, Poll, Events, Event, Evented};
[INFO] [stderr]    |                                        ^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/server.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::result::Result`
[INFO] [stderr]  --> src/server.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::result::Result;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::net::ToSocketAddrs`
[INFO] [stderr]  --> src/server.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::ToSocketAddrs;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/server.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/server.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Formatter`, `self`
[INFO] [stderr]   --> src/server.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::fmt::{self, Formatter};
[INFO] [stderr]    |                ^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TcpStream`
[INFO] [stderr]   --> src/server.rs:13:29
[INFO] [stderr]    |
[INFO] [stderr] 13 | use mio::net::{TcpListener, TcpStream};
[INFO] [stderr]    |                             ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mio::deprecated::TryRead`
[INFO] [stderr]   --> src/server.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use mio::deprecated::TryRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/server.rs:26:23
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub type Handle = Box<Fn(Arc<Mutex<StreamData>>) + Send + Sync + 'static>;
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Arc<Mutex<StreamData>>) + Send + Sync + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:58:32
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Request`
[INFO] [stderr]  --> src/app/mod.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 | use http::{Http, Request, Response};
[INFO] [stderr]   |                  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Value`
[INFO] [stderr]  --> src/app/mod.rs:6:30
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::context::{Context, Value};
[INFO] [stderr]   |                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/app/mod.rs:16:19
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub type Handle = Fn(&mut Context) + Send + Sync + 'static;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Context) + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `error::MioResult`
[INFO] [stderr]  --> src/stream_data.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use error::MioResult;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/util/threadpool.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 | type Truck<'a> = Box<FnBox + Send + 'a>;
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox + Send + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::deprecated::TryRead': update to use `Poll`
[INFO] [stderr]   --> src/connection.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use mio::deprecated::TryRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:16:20
[INFO] [stderr]    |
[INFO] [stderr] 16 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Receiver': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:16:26
[INFO] [stderr]    |
[INFO] [stderr] 16 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                          ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:16:36
[INFO] [stderr]    |
[INFO] [stderr] 16 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                                    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     tx: Sender<ConnEvent>,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:38:57
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn new(token: Token, tcp_stream: TcpStream, tx: Sender<ConnEvent>, thread_pool: Rc<Pool>, handle: Arc<Handle>,) -> Connection {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::deprecated::TryRead': update to use `Poll`
[INFO] [stderr]   --> src/server.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use mio::deprecated::TryRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Receiver': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:15:26
[INFO] [stderr]    |
[INFO] [stderr] 15 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                          ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:15:36
[INFO] [stderr]    |
[INFO] [stderr] 15 | use mio::channel::{self, Receiver, Sender};
[INFO] [stderr]    |                                    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     tx: Sender<ConnEvent>,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Receiver': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     rx: Receiver<ConnEvent>,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::channel': use mio-extras instead
[INFO] [stderr]   --> src/server.rs:43:24
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let (tx, rx) = channel::channel::<ConnEvent>();
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender::<T>::send': use mio-extras instead
[INFO] [stderr]   --> src/connection.rs:95:16
[INFO] [stderr]    |
[INFO] [stderr] 95 |             tx.send(ConnEvent::Write(token)).is_ok();
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Sender::<T>::send': use mio-extras instead
[INFO] [stderr]    --> src/connection.rs:118:17
[INFO] [stderr]     |
[INFO] [stderr] 118 |         self.tx.send(ConnEvent::Read(self.token)).is_ok();
[INFO] [stderr]     |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::hup': use UnixReady instead
[INFO] [stderr]   --> src/server.rs:81:49
[INFO] [stderr]    |
[INFO] [stderr] 81 |                             Ready::readable() | Ready::hup(),
[INFO] [stderr]    |                                                 ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel::Receiver::<T>::try_recv': use mio-extras instead
[INFO] [stderr]    --> src/server.rs:102:27
[INFO] [stderr]     |
[INFO] [stderr] 102 |             match self.rx.try_recv() {
[INFO] [stderr]     |                           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::hup': use UnixReady instead
[INFO] [stderr]    --> src/server.rs:109:57
[INFO] [stderr]     |
[INFO] [stderr] 109 |                                     Ready::writable() | Ready::hup(),
[INFO] [stderr]     |                                                         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::hup': use UnixReady instead
[INFO] [stderr]    --> src/server.rs:118:57
[INFO] [stderr]     |
[INFO] [stderr] 118 |                                     Ready::readable() | Ready::hup(),
[INFO] [stderr]     |                                                         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::is_hup': use UnixReady instead
[INFO] [stderr]    --> src/server.rs:144:30
[INFO] [stderr]     |
[INFO] [stderr] 144 |         if event.readiness().is_hup() || event.readiness().is_error() {
[INFO] [stderr]     |                              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::is_error': use UnixReady instead
[INFO] [stderr]    --> src/server.rs:144:60
[INFO] [stderr]     |
[INFO] [stderr] 144 |         if event.readiness().is_hup() || event.readiness().is_error() {
[INFO] [stderr]     |                                                            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
[INFO] [stderr]   --> src/app/mod.rs:86:42
[INFO] [stderr]    |
[INFO] [stderr] 86 |                                     path.trim_right_matches('/').to_owned()
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end_matches`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/error.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/app/mod.rs:113:17
[INFO] [stderr]     |
[INFO] [stderr] 113 |             Err(err) => {
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/server.rs:78:30
[INFO] [stderr]    |
[INFO] [stderr] 78 |                         let (mut tcp_stream, _) = self.listener.accept().unwrap();
[INFO] [stderr]    |                              ----^^^^^^^^^^
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/app/route.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut route = Route {
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `events`
[INFO] [stderr]   --> src/server.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     events: Events,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute_always`
[INFO] [stderr]   --> src/app/middleware.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn execute_always(&self, context: &mut Context) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `prefix`
[INFO] [stderr]  --> src/app/group.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     prefix: String,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/app/group.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | /     fn add<H>(&mut self, method: &str, pattern: &str, handle: H) -> &mut Route
[INFO] [stderr] 23 | |         where H: Fn(&mut Context) + Send + Sync + 'static
[INFO] [stderr] 24 | |     {
[INFO] [stderr] 25 | |         let route = Route::new(
[INFO] [stderr] ...  |
[INFO] [stderr] 32 | |         self.routes.last_mut().unwrap()
[INFO] [stderr] 33 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/app/group.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 | /     pub fn get<H>(&mut self, pattern: &str, handle: H) -> &mut Route
[INFO] [stderr] 36 | |         where H: Fn(&mut Context) + Send + Sync + 'static
[INFO] [stderr] 37 | |     {
[INFO] [stderr] 38 | |         self.add(&stringify!(get).to_uppercase(), pattern, handle)
[INFO] [stderr] 39 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `begin`
[INFO] [stderr]   --> src/app/mod.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     begin: Vec<Middleware>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `before`
[INFO] [stderr]   --> src/app/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     before: Vec<Middleware>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `after`
[INFO] [stderr]   --> src/app/mod.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     after: Vec<Middleware>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `finish`
[INFO] [stderr]   --> src/app/mod.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     finish: Vec<Middleware>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/connection.rs:95:13
[INFO] [stderr]    |
[INFO] [stderr] 95 |             tx.send(ConnEvent::Write(token)).is_ok();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/connection.rs:118:9
[INFO] [stderr]     |
[INFO] [stderr] 118 |         self.tx.send(ConnEvent::Read(self.token)).is_ok();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/server.rs:87:25
[INFO] [stderr]    |
[INFO] [stderr] 87 |                         self.channel();
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/server.rs:90:25
[INFO] [stderr]    |
[INFO] [stderr] 90 |                         self.connect(event, token);
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/server.rs:146:17
[INFO] [stderr]     |
[INFO] [stderr] 146 |                 self.poll.deregister(&conn.tcp_stream);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/server.rs:170:17
[INFO] [stderr]     |
[INFO] [stderr] 170 |                 conn.tcp_stream.shutdown(Shutdown::Both);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `"docker" "inspect" "fb09bab674e80592cc4cfc82b51abf46d9a7b3a42cf1338c3c6a7ee3bc5e7179"`
[INFO] running `"docker" "rm" "-f" "fb09bab674e80592cc4cfc82b51abf46d9a7b3a42cf1338c3c6a7ee3bc5e7179"`
[INFO] [stdout] fb09bab674e80592cc4cfc82b51abf46d9a7b3a42cf1338c3c6a7ee3bc5e7179
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wyq756543431/sunflower:/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" "test" "--frozen"`
[INFO] [stdout] eeb6c0a7e9f88e97d02566ec501888dbe8d608540ec36567ec872f00de4db6a2
[INFO] running `"docker" "start" "-a" "eeb6c0a7e9f88e97d02566ec501888dbe8d608540ec36567ec872f00de4db6a2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sunflower-d79e328236d3e9a0
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/client-ba5cc25ff27f400f
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test_server-0befa2689f72ed11
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sunflower
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "eeb6c0a7e9f88e97d02566ec501888dbe8d608540ec36567ec872f00de4db6a2"`
[INFO] running `"docker" "rm" "-f" "eeb6c0a7e9f88e97d02566ec501888dbe8d608540ec36567ec872f00de4db6a2"`
[INFO] [stdout] eeb6c0a7e9f88e97d02566ec501888dbe8d608540ec36567ec872f00de4db6a2