[INFO] crate abc 0.2.3 is already in cache
[INFO] testing abc-0.2.3 against 1.44.0 for beta-1.45-1
[INFO] extracting crate abc 0.2.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate abc 0.2.3 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate abc 0.2.3
[INFO] finished tweaking crates.io crate abc 0.2.3
[INFO] tweaked toml for crates.io crate abc 0.2.3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7d3b384807dd8cec4f0e8fc9d0997e9bdb5694e39352bc3475e70d56b50ad139
[INFO] running `"docker" "start" "-a" "7d3b384807dd8cec4f0e8fc9d0997e9bdb5694e39352bc3475e70d56b50ad139"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling abc v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         try!(crossbeam::scope(|scope| {
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:123:25
[INFO] [stderr]     |
[INFO] [stderr] 123 |                         try!(candidates.lock()).push(candidate);
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:137:30
[INFO] [stderr]     |
[INFO] [stderr] 137 |         let mut candidates = try!(candidates.into_inner());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:179:30
[INFO] [stderr]     |
[INFO] [stderr] 179 |             let read_guard = try!(candidate_mutex.read());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:198:30
[INFO] [stderr]     |
[INFO] [stderr] 198 |         let mut best_guard = try!(self.best.lock());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:203:36
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 let sender_guard = try!(mutex.lock());
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:206:21
[INFO] [stderr]     |
[INFO] [stderr] 206 |                     try!(self.stop());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:217:31
[INFO] [stderr]     |
[INFO] [stderr] 217 |         let mut write_guard = try!(self.working[n].write());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:220:13
[INFO] [stderr]     |
[INFO] [stderr] 220 |             try!(self.consider_improvement(&write_guard.candidate));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:226:46
[INFO] [stderr]     |
[INFO] [stderr] 226 |                     let mut scouting_guard = try!(self.scouting.write());
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:232:17
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 try!(self.consider_improvement(&candidate));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:234:43
[INFO] [stderr]     |
[INFO] [stderr] 234 |                     let mut write_guard = try!(self.working[n].write());
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:238:42
[INFO] [stderr]     |
[INFO] [stderr] 238 |                 let mut scouting_guard = try!(self.scouting.write());
[INFO] [stderr]     |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:252:34
[INFO] [stderr]     |
[INFO] [stderr] 252 |             let scouting_guard = try!(self.scouting.read());
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:282:31
[INFO] [stderr]     |
[INFO] [stderr] 282 |         let current_working = try!(self.current_working());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:286:38
[INFO] [stderr]     |
[INFO] [stderr] 286 |                 let scouting_guard = try!(self.scouting.read());
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:292:34
[INFO] [stderr]     |
[INFO] [stderr] 292 |             Task::Observer(_) => try!(self.choose(&current_working)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:299:29
[INFO] [stderr]     |
[INFO] [stderr] 299 |             let mut guard = try!(self.tasks.lock());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:310:45
[INFO] [stderr]     |
[INFO] [stderr] 310 | ...                   let mut guard = try!(self.tasks.lock());
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:315:40
[INFO] [stderr]     |
[INFO] [stderr] 315 | ...                   Some(t) => try!(self.execute(&t)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:342:9
[INFO] [stderr]     |
[INFO] [stderr] 342 |         try!(self.run(tasks));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:359:31
[INFO] [stderr]     |
[INFO] [stderr] 359 |         let mut tasks_guard = try!(self.tasks.lock());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:384:27
[INFO] [stderr]     |
[INFO] [stderr] 384 |         let tasks_guard = try!(self.tasks.lock());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:417:13
[INFO] [stderr]     |
[INFO] [stderr] 417 |             try!(write!(f, "..{:?}..\n", working.candidate));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:23:32
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[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/scaling.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub type ScalingFunction = Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `"docker" "inspect" "7d3b384807dd8cec4f0e8fc9d0997e9bdb5694e39352bc3475e70d56b50ad139"`
[INFO] running `"docker" "rm" "-f" "7d3b384807dd8cec4f0e8fc9d0997e9bdb5694e39352bc3475e70d56b50ad139"`
[INFO] [stdout] 7d3b384807dd8cec4f0e8fc9d0997e9bdb5694e39352bc3475e70d56b50ad139
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f9db9e19197f1d7202ea84d19ff012f92b0cfa0e7790449850138031ed70807e
[INFO] running `"docker" "start" "-a" "f9db9e19197f1d7202ea84d19ff012f92b0cfa0e7790449850138031ed70807e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling abc v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         try!(crossbeam::scope(|scope| {
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:123:25
[INFO] [stderr]     |
[INFO] [stderr] 123 |                         try!(candidates.lock()).push(candidate);
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:137:30
[INFO] [stderr]     |
[INFO] [stderr] 137 |         let mut candidates = try!(candidates.into_inner());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:179:30
[INFO] [stderr]     |
[INFO] [stderr] 179 |             let read_guard = try!(candidate_mutex.read());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:198:30
[INFO] [stderr]     |
[INFO] [stderr] 198 |         let mut best_guard = try!(self.best.lock());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:203:36
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 let sender_guard = try!(mutex.lock());
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:206:21
[INFO] [stderr]     |
[INFO] [stderr] 206 |                     try!(self.stop());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:217:31
[INFO] [stderr]     |
[INFO] [stderr] 217 |         let mut write_guard = try!(self.working[n].write());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:220:13
[INFO] [stderr]     |
[INFO] [stderr] 220 |             try!(self.consider_improvement(&write_guard.candidate));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:226:46
[INFO] [stderr]     |
[INFO] [stderr] 226 |                     let mut scouting_guard = try!(self.scouting.write());
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:232:17
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 try!(self.consider_improvement(&candidate));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:234:43
[INFO] [stderr]     |
[INFO] [stderr] 234 |                     let mut write_guard = try!(self.working[n].write());
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:238:42
[INFO] [stderr]     |
[INFO] [stderr] 238 |                 let mut scouting_guard = try!(self.scouting.write());
[INFO] [stderr]     |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:252:34
[INFO] [stderr]     |
[INFO] [stderr] 252 |             let scouting_guard = try!(self.scouting.read());
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:282:31
[INFO] [stderr]     |
[INFO] [stderr] 282 |         let current_working = try!(self.current_working());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:286:38
[INFO] [stderr]     |
[INFO] [stderr] 286 |                 let scouting_guard = try!(self.scouting.read());
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:292:34
[INFO] [stderr]     |
[INFO] [stderr] 292 |             Task::Observer(_) => try!(self.choose(&current_working)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:299:29
[INFO] [stderr]     |
[INFO] [stderr] 299 |             let mut guard = try!(self.tasks.lock());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:310:45
[INFO] [stderr]     |
[INFO] [stderr] 310 | ...                   let mut guard = try!(self.tasks.lock());
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:315:40
[INFO] [stderr]     |
[INFO] [stderr] 315 | ...                   Some(t) => try!(self.execute(&t)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:342:9
[INFO] [stderr]     |
[INFO] [stderr] 342 |         try!(self.run(tasks));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:359:31
[INFO] [stderr]     |
[INFO] [stderr] 359 |         let mut tasks_guard = try!(self.tasks.lock());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:384:27
[INFO] [stderr]     |
[INFO] [stderr] 384 |         let tasks_guard = try!(self.tasks.lock());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:417:13
[INFO] [stderr]     |
[INFO] [stderr] 417 |             try!(write!(f, "..{:?}..\n", working.candidate));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:23:32
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[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/scaling.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub type ScalingFunction = Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         try!(crossbeam::scope(|scope| {
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:123:25
[INFO] [stderr]     |
[INFO] [stderr] 123 |                         try!(candidates.lock()).push(candidate);
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:137:30
[INFO] [stderr]     |
[INFO] [stderr] 137 |         let mut candidates = try!(candidates.into_inner());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:179:30
[INFO] [stderr]     |
[INFO] [stderr] 179 |             let read_guard = try!(candidate_mutex.read());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:198:30
[INFO] [stderr]     |
[INFO] [stderr] 198 |         let mut best_guard = try!(self.best.lock());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:203:36
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 let sender_guard = try!(mutex.lock());
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:206:21
[INFO] [stderr]     |
[INFO] [stderr] 206 |                     try!(self.stop());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:217:31
[INFO] [stderr]     |
[INFO] [stderr] 217 |         let mut write_guard = try!(self.working[n].write());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:220:13
[INFO] [stderr]     |
[INFO] [stderr] 220 |             try!(self.consider_improvement(&write_guard.candidate));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:226:46
[INFO] [stderr]     |
[INFO] [stderr] 226 |                     let mut scouting_guard = try!(self.scouting.write());
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:232:17
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 try!(self.consider_improvement(&candidate));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:234:43
[INFO] [stderr]     |
[INFO] [stderr] 234 |                     let mut write_guard = try!(self.working[n].write());
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:238:42
[INFO] [stderr]     |
[INFO] [stderr] 238 |                 let mut scouting_guard = try!(self.scouting.write());
[INFO] [stderr]     |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:252:34
[INFO] [stderr]     |
[INFO] [stderr] 252 |             let scouting_guard = try!(self.scouting.read());
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:282:31
[INFO] [stderr]     |
[INFO] [stderr] 282 |         let current_working = try!(self.current_working());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:286:38
[INFO] [stderr]     |
[INFO] [stderr] 286 |                 let scouting_guard = try!(self.scouting.read());
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:292:34
[INFO] [stderr]     |
[INFO] [stderr] 292 |             Task::Observer(_) => try!(self.choose(&current_working)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:299:29
[INFO] [stderr]     |
[INFO] [stderr] 299 |             let mut guard = try!(self.tasks.lock());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:310:45
[INFO] [stderr]     |
[INFO] [stderr] 310 | ...                   let mut guard = try!(self.tasks.lock());
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:315:40
[INFO] [stderr]     |
[INFO] [stderr] 315 | ...                   Some(t) => try!(self.execute(&t)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:342:9
[INFO] [stderr]     |
[INFO] [stderr] 342 |         try!(self.run(tasks));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:359:31
[INFO] [stderr]     |
[INFO] [stderr] 359 |         let mut tasks_guard = try!(self.tasks.lock());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:384:27
[INFO] [stderr]     |
[INFO] [stderr] 384 |         let tasks_guard = try!(self.tasks.lock());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:417:13
[INFO] [stderr]     |
[INFO] [stderr] 417 |             try!(write!(f, "..{:?}..\n", working.candidate));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:23:32
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[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/scaling.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub type ScalingFunction = Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.29s
[INFO] running `"docker" "inspect" "f9db9e19197f1d7202ea84d19ff012f92b0cfa0e7790449850138031ed70807e"`
[INFO] running `"docker" "rm" "-f" "f9db9e19197f1d7202ea84d19ff012f92b0cfa0e7790449850138031ed70807e"`
[INFO] [stdout] f9db9e19197f1d7202ea84d19ff012f92b0cfa0e7790449850138031ed70807e
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 97525a7c10e7841a38282821f44f3bde3c322162e209958b696fe0c24191d8b8
[INFO] running `"docker" "start" "-a" "97525a7c10e7841a38282821f44f3bde3c322162e209958b696fe0c24191d8b8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         try!(crossbeam::scope(|scope| {
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:123:25
[INFO] [stderr]     |
[INFO] [stderr] 123 |                         try!(candidates.lock()).push(candidate);
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:137:30
[INFO] [stderr]     |
[INFO] [stderr] 137 |         let mut candidates = try!(candidates.into_inner());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:179:30
[INFO] [stderr]     |
[INFO] [stderr] 179 |             let read_guard = try!(candidate_mutex.read());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:198:30
[INFO] [stderr]     |
[INFO] [stderr] 198 |         let mut best_guard = try!(self.best.lock());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:203:36
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 let sender_guard = try!(mutex.lock());
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:206:21
[INFO] [stderr]     |
[INFO] [stderr] 206 |                     try!(self.stop());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:217:31
[INFO] [stderr]     |
[INFO] [stderr] 217 |         let mut write_guard = try!(self.working[n].write());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:220:13
[INFO] [stderr]     |
[INFO] [stderr] 220 |             try!(self.consider_improvement(&write_guard.candidate));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:226:46
[INFO] [stderr]     |
[INFO] [stderr] 226 |                     let mut scouting_guard = try!(self.scouting.write());
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:232:17
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 try!(self.consider_improvement(&candidate));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:234:43
[INFO] [stderr]     |
[INFO] [stderr] 234 |                     let mut write_guard = try!(self.working[n].write());
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:238:42
[INFO] [stderr]     |
[INFO] [stderr] 238 |                 let mut scouting_guard = try!(self.scouting.write());
[INFO] [stderr]     |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:252:34
[INFO] [stderr]     |
[INFO] [stderr] 252 |             let scouting_guard = try!(self.scouting.read());
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:282:31
[INFO] [stderr]     |
[INFO] [stderr] 282 |         let current_working = try!(self.current_working());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:286:38
[INFO] [stderr]     |
[INFO] [stderr] 286 |                 let scouting_guard = try!(self.scouting.read());
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:292:34
[INFO] [stderr]     |
[INFO] [stderr] 292 |             Task::Observer(_) => try!(self.choose(&current_working)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:299:29
[INFO] [stderr]     |
[INFO] [stderr] 299 |             let mut guard = try!(self.tasks.lock());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:310:45
[INFO] [stderr]     |
[INFO] [stderr] 310 | ...                   let mut guard = try!(self.tasks.lock());
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:315:40
[INFO] [stderr]     |
[INFO] [stderr] 315 | ...                   Some(t) => try!(self.execute(&t)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:342:9
[INFO] [stderr]     |
[INFO] [stderr] 342 |         try!(self.run(tasks));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:359:31
[INFO] [stderr]     |
[INFO] [stderr] 359 |         let mut tasks_guard = try!(self.tasks.lock());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:384:27
[INFO] [stderr]     |
[INFO] [stderr] 384 |         let tasks_guard = try!(self.tasks.lock());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:417:13
[INFO] [stderr]     |
[INFO] [stderr] 417 |             try!(write!(f, "..{:?}..\n", working.candidate));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:23:32
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[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/scaling.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub type ScalingFunction = Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         try!(crossbeam::scope(|scope| {
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:123:25
[INFO] [stderr]     |
[INFO] [stderr] 123 |                         try!(candidates.lock()).push(candidate);
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:137:30
[INFO] [stderr]     |
[INFO] [stderr] 137 |         let mut candidates = try!(candidates.into_inner());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:179:30
[INFO] [stderr]     |
[INFO] [stderr] 179 |             let read_guard = try!(candidate_mutex.read());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:198:30
[INFO] [stderr]     |
[INFO] [stderr] 198 |         let mut best_guard = try!(self.best.lock());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:203:36
[INFO] [stderr]     |
[INFO] [stderr] 203 |                 let sender_guard = try!(mutex.lock());
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:206:21
[INFO] [stderr]     |
[INFO] [stderr] 206 |                     try!(self.stop());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:217:31
[INFO] [stderr]     |
[INFO] [stderr] 217 |         let mut write_guard = try!(self.working[n].write());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:220:13
[INFO] [stderr]     |
[INFO] [stderr] 220 |             try!(self.consider_improvement(&write_guard.candidate));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:226:46
[INFO] [stderr]     |
[INFO] [stderr] 226 |                     let mut scouting_guard = try!(self.scouting.write());
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:232:17
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 try!(self.consider_improvement(&candidate));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:234:43
[INFO] [stderr]     |
[INFO] [stderr] 234 |                     let mut write_guard = try!(self.working[n].write());
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:238:42
[INFO] [stderr]     |
[INFO] [stderr] 238 |                 let mut scouting_guard = try!(self.scouting.write());
[INFO] [stderr]     |                                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:252:34
[INFO] [stderr]     |
[INFO] [stderr] 252 |             let scouting_guard = try!(self.scouting.read());
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:282:31
[INFO] [stderr]     |
[INFO] [stderr] 282 |         let current_working = try!(self.current_working());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:286:38
[INFO] [stderr]     |
[INFO] [stderr] 286 |                 let scouting_guard = try!(self.scouting.read());
[INFO] [stderr]     |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:292:34
[INFO] [stderr]     |
[INFO] [stderr] 292 |             Task::Observer(_) => try!(self.choose(&current_working)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:299:29
[INFO] [stderr]     |
[INFO] [stderr] 299 |             let mut guard = try!(self.tasks.lock());
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:310:45
[INFO] [stderr]     |
[INFO] [stderr] 310 | ...                   let mut guard = try!(self.tasks.lock());
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:315:40
[INFO] [stderr]     |
[INFO] [stderr] 315 | ...                   Some(t) => try!(self.execute(&t)),
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:342:9
[INFO] [stderr]     |
[INFO] [stderr] 342 |         try!(self.run(tasks));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:359:31
[INFO] [stderr]     |
[INFO] [stderr] 359 |         let mut tasks_guard = try!(self.tasks.lock());
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:384:27
[INFO] [stderr]     |
[INFO] [stderr] 384 |         let tasks_guard = try!(self.tasks.lock());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/hive.rs:417:13
[INFO] [stderr]     |
[INFO] [stderr] 417 |             try!(write!(f, "..{:?}..\n", working.candidate));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:23:32
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[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/scaling.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub type ScalingFunction = Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/abc-8718080b96044f80
[INFO] [stderr]    Doc-tests abc
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test task::tests::basic_cycle ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/context.rs - context::Context (line 22) ... ok
[INFO] [stdout] test src/scaling.rs - scaling (line 22) ... ok
[INFO] [stdout] test src/lib.rs -  (line 16) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "97525a7c10e7841a38282821f44f3bde3c322162e209958b696fe0c24191d8b8"`
[INFO] running `"docker" "rm" "-f" "97525a7c10e7841a38282821f44f3bde3c322162e209958b696fe0c24191d8b8"`
[INFO] [stdout] 97525a7c10e7841a38282821f44f3bde3c322162e209958b696fe0c24191d8b8