[INFO] fetching crate abc 0.2.3...
[INFO] testing abc-0.2.3 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate abc 0.2.3 into /workspace/builds/worker-5-tc1/source
[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-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate abc 0.2.3 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] [stderr]       Adding crossbeam v0.2.12 (available: v0.8.4)
[INFO] [stderr]       Adding num_cpus v0.2.13 (available: v1.17.0)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam v0.2.12
[INFO] [stderr]   Downloaded num_cpus v0.2.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2b33d5f545e96c7d7e41de0f122fd68a617076a9454100ec092b7ca2ea12669
[INFO] running `Command { std: "docker" "start" "-a" "d2b33d5f545e96c7d7e41de0f122fd68a617076a9454100ec092b7ca2ea12669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2b33d5f545e96c7d7e41de0f122fd68a617076a9454100ec092b7ca2ea12669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2b33d5f545e96c7d7e41de0f122fd68a617076a9454100ec092b7ca2ea12669", kill_on_drop: false }`
[INFO] [stdout] d2b33d5f545e96c7d7e41de0f122fd68a617076a9454100ec092b7ca2ea12669
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 132e40f7a05cced0c7f94c5eaa3aa406b631d0f6bae71f261e2b835a6131c66f
[INFO] running `Command { std: "docker" "start" "-a" "132e40f7a05cced0c7f94c5eaa3aa406b631d0f6bae71f261e2b835a6131c66f", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling abc v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |         try!(crossbeam::scope(|scope| {
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:123:25
[INFO] [stdout]     |
[INFO] [stdout] 123 |                         try!(candidates.lock()).push(candidate);
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:137:30
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let mut candidates = try!(candidates.into_inner());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:179:30
[INFO] [stdout]     |
[INFO] [stdout] 179 |             let read_guard = try!(candidate_mutex.read());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:198:30
[INFO] [stdout]     |
[INFO] [stdout] 198 |         let mut best_guard = try!(self.best.lock());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:203:36
[INFO] [stdout]     |
[INFO] [stdout] 203 |                 let sender_guard = try!(mutex.lock());
[INFO] [stdout]     |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:206:21
[INFO] [stdout]     |
[INFO] [stdout] 206 |                     try!(self.stop());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:217:31
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let mut write_guard = try!(self.working[n].write());
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:220:13
[INFO] [stdout]     |
[INFO] [stdout] 220 |             try!(self.consider_improvement(&write_guard.candidate));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 try!(self.consider_improvement(&candidate));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:226:46
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     let mut scouting_guard = try!(self.scouting.write());
[INFO] [stdout]     |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:234:43
[INFO] [stdout]     |
[INFO] [stdout] 234 |                     let mut write_guard = try!(self.working[n].write());
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:238:42
[INFO] [stdout]     |
[INFO] [stdout] 238 |                 let mut scouting_guard = try!(self.scouting.write());
[INFO] [stdout]     |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:252:34
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let scouting_guard = try!(self.scouting.read());
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:282:31
[INFO] [stdout]     |
[INFO] [stdout] 282 |         let current_working = try!(self.current_working());
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:286:38
[INFO] [stdout]     |
[INFO] [stdout] 286 |                 let scouting_guard = try!(self.scouting.read());
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:292:34
[INFO] [stdout]     |
[INFO] [stdout] 292 |             Task::Observer(_) => try!(self.choose(&current_working)),
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:299:29
[INFO] [stdout]     |
[INFO] [stdout] 299 |             let mut guard = try!(self.tasks.lock());
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:310:45
[INFO] [stdout]     |
[INFO] [stdout] 310 | ...                   let mut guard = try!(self.tasks.lock());
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:315:40
[INFO] [stdout]     |
[INFO] [stdout] 315 | ...                   Some(t) => try!(self.execute(&t)),
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 342 |         try!(self.run(tasks));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:359:31
[INFO] [stdout]     |
[INFO] [stdout] 359 |         let mut tasks_guard = try!(self.tasks.lock());
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:384:27
[INFO] [stdout]     |
[INFO] [stdout] 384 |         let tasks_guard = try!(self.tasks.lock());
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 417 |             try!(write!(f, "..{:?}..\n", working.candidate));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scaling.rs:37:28
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub type ScalingFunction = Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub type ScalingFunction = dyn Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/result.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hive.rs:192:16
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn get(&self) -> AbcResult<MutexGuard<Candidate<Ctx::Solution>>> {
[INFO] [stdout]     |                ^^^^^               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                |
[INFO] [stdout]     |                the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn get(&self) -> AbcResult<MutexGuard<'_, Candidate<Ctx::Solution>>> {
[INFO] [stdout]     |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.47s
[INFO] running `Command { std: "docker" "inspect" "132e40f7a05cced0c7f94c5eaa3aa406b631d0f6bae71f261e2b835a6131c66f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "132e40f7a05cced0c7f94c5eaa3aa406b631d0f6bae71f261e2b835a6131c66f", kill_on_drop: false }`
[INFO] [stdout] 132e40f7a05cced0c7f94c5eaa3aa406b631d0f6bae71f261e2b835a6131c66f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fac19d3c793516d12326249425c4a13b767c2f4432598618cfb34cbd2853234
[INFO] running `Command { std: "docker" "start" "-a" "0fac19d3c793516d12326249425c4a13b767c2f4432598618cfb34cbd2853234", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling abc v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |         try!(crossbeam::scope(|scope| {
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:123:25
[INFO] [stdout]     |
[INFO] [stdout] 123 |                         try!(candidates.lock()).push(candidate);
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:137:30
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let mut candidates = try!(candidates.into_inner());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:179:30
[INFO] [stdout]     |
[INFO] [stdout] 179 |             let read_guard = try!(candidate_mutex.read());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:198:30
[INFO] [stdout]     |
[INFO] [stdout] 198 |         let mut best_guard = try!(self.best.lock());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:203:36
[INFO] [stdout]     |
[INFO] [stdout] 203 |                 let sender_guard = try!(mutex.lock());
[INFO] [stdout]     |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:206:21
[INFO] [stdout]     |
[INFO] [stdout] 206 |                     try!(self.stop());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:217:31
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let mut write_guard = try!(self.working[n].write());
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:220:13
[INFO] [stdout]     |
[INFO] [stdout] 220 |             try!(self.consider_improvement(&write_guard.candidate));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 try!(self.consider_improvement(&candidate));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:226:46
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     let mut scouting_guard = try!(self.scouting.write());
[INFO] [stdout]     |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:234:43
[INFO] [stdout]     |
[INFO] [stdout] 234 |                     let mut write_guard = try!(self.working[n].write());
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:238:42
[INFO] [stdout]     |
[INFO] [stdout] 238 |                 let mut scouting_guard = try!(self.scouting.write());
[INFO] [stdout]     |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:252:34
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let scouting_guard = try!(self.scouting.read());
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:282:31
[INFO] [stdout]     |
[INFO] [stdout] 282 |         let current_working = try!(self.current_working());
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:286:38
[INFO] [stdout]     |
[INFO] [stdout] 286 |                 let scouting_guard = try!(self.scouting.read());
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:292:34
[INFO] [stdout]     |
[INFO] [stdout] 292 |             Task::Observer(_) => try!(self.choose(&current_working)),
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:299:29
[INFO] [stdout]     |
[INFO] [stdout] 299 |             let mut guard = try!(self.tasks.lock());
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:310:45
[INFO] [stdout]     |
[INFO] [stdout] 310 | ...                   let mut guard = try!(self.tasks.lock());
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:315:40
[INFO] [stdout]     |
[INFO] [stdout] 315 | ...                   Some(t) => try!(self.execute(&t)),
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 342 |         try!(self.run(tasks));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:359:31
[INFO] [stdout]     |
[INFO] [stdout] 359 |         let mut tasks_guard = try!(self.tasks.lock());
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:384:27
[INFO] [stdout]     |
[INFO] [stdout] 384 |         let tasks_guard = try!(self.tasks.lock());
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 417 |             try!(write!(f, "..{:?}..\n", working.candidate));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scaling.rs:37:28
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub type ScalingFunction = Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub type ScalingFunction = dyn Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/result.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hive.rs:192:16
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn get(&self) -> AbcResult<MutexGuard<Candidate<Ctx::Solution>>> {
[INFO] [stdout]     |                ^^^^^               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                |
[INFO] [stdout]     |                the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn get(&self) -> AbcResult<MutexGuard<'_, Candidate<Ctx::Solution>>> {
[INFO] [stdout]     |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |         try!(crossbeam::scope(|scope| {
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:123:25
[INFO] [stdout]     |
[INFO] [stdout] 123 |                         try!(candidates.lock()).push(candidate);
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:137:30
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let mut candidates = try!(candidates.into_inner());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:179:30
[INFO] [stdout]     |
[INFO] [stdout] 179 |             let read_guard = try!(candidate_mutex.read());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:198:30
[INFO] [stdout]     |
[INFO] [stdout] 198 |         let mut best_guard = try!(self.best.lock());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:203:36
[INFO] [stdout]     |
[INFO] [stdout] 203 |                 let sender_guard = try!(mutex.lock());
[INFO] [stdout]     |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:206:21
[INFO] [stdout]     |
[INFO] [stdout] 206 |                     try!(self.stop());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:217:31
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let mut write_guard = try!(self.working[n].write());
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:220:13
[INFO] [stdout]     |
[INFO] [stdout] 220 |             try!(self.consider_improvement(&write_guard.candidate));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 try!(self.consider_improvement(&candidate));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:226:46
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     let mut scouting_guard = try!(self.scouting.write());
[INFO] [stdout]     |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:234:43
[INFO] [stdout]     |
[INFO] [stdout] 234 |                     let mut write_guard = try!(self.working[n].write());
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:238:42
[INFO] [stdout]     |
[INFO] [stdout] 238 |                 let mut scouting_guard = try!(self.scouting.write());
[INFO] [stdout]     |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:252:34
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let scouting_guard = try!(self.scouting.read());
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:282:31
[INFO] [stdout]     |
[INFO] [stdout] 282 |         let current_working = try!(self.current_working());
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:286:38
[INFO] [stdout]     |
[INFO] [stdout] 286 |                 let scouting_guard = try!(self.scouting.read());
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:292:34
[INFO] [stdout]     |
[INFO] [stdout] 292 |             Task::Observer(_) => try!(self.choose(&current_working)),
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:299:29
[INFO] [stdout]     |
[INFO] [stdout] 299 |             let mut guard = try!(self.tasks.lock());
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:310:45
[INFO] [stdout]     |
[INFO] [stdout] 310 | ...                   let mut guard = try!(self.tasks.lock());
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:315:40
[INFO] [stdout]     |
[INFO] [stdout] 315 | ...                   Some(t) => try!(self.execute(&t)),
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 342 |         try!(self.run(tasks));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:359:31
[INFO] [stdout]     |
[INFO] [stdout] 359 |         let mut tasks_guard = try!(self.tasks.lock());
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:384:27
[INFO] [stdout]     |
[INFO] [stdout] 384 |         let tasks_guard = try!(self.tasks.lock());
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hive.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 417 |             try!(write!(f, "..{:?}..\n", working.candidate));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/scaling.rs:37:28
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub type ScalingFunction = Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub type ScalingFunction = dyn Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/result.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/hive.rs:192:16
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn get(&self) -> AbcResult<MutexGuard<Candidate<Ctx::Solution>>> {
[INFO] [stdout]     |                ^^^^^               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                |
[INFO] [stdout]     |                the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn get(&self) -> AbcResult<MutexGuard<'_, Candidate<Ctx::Solution>>> {
[INFO] [stdout]     |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "0fac19d3c793516d12326249425c4a13b767c2f4432598618cfb34cbd2853234", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fac19d3c793516d12326249425c4a13b767c2f4432598618cfb34cbd2853234", kill_on_drop: false }`
[INFO] [stdout] 0fac19d3c793516d12326249425c4a13b767c2f4432598618cfb34cbd2853234
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e72f7ec30ea50a4b7456e1540f65ef2164df3980d2dc887d082ae55106bfc930
[INFO] running `Command { std: "docker" "start" "-a" "e72f7ec30ea50a4b7456e1540f65ef2164df3980d2dc887d082ae55106bfc930", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: use of deprecated macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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/scaling.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub type ScalingFunction = Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub type ScalingFunction = dyn Fn(Vec<f64>) -> Vec<f64> + Send + Sync + 'static;
[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]    |                                ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stderr]    |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/hive.rs:192:16
[INFO] [stderr]     |
[INFO] [stderr] 192 |     pub fn get(&self) -> AbcResult<MutexGuard<Candidate<Ctx::Solution>>> {
[INFO] [stderr]     |                ^^^^^               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                |
[INFO] [stderr]     |                the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 192 |     pub fn get(&self) -> AbcResult<MutexGuard<'_, Candidate<Ctx::Solution>>> {
[INFO] [stderr]     |                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: `abc` (lib) generated 27 warnings (run `cargo fix --lib -p abc` to apply 3 suggestions)
[INFO] [stderr] warning: `abc` (lib test) generated 27 warnings (27 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/abc-e4f40ee344f31f19)
[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; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests abc
[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; finished in 0.91s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e72f7ec30ea50a4b7456e1540f65ef2164df3980d2dc887d082ae55106bfc930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e72f7ec30ea50a4b7456e1540f65ef2164df3980d2dc887d082ae55106bfc930", kill_on_drop: false }`
[INFO] [stdout] e72f7ec30ea50a4b7456e1540f65ef2164df3980d2dc887d082ae55106bfc930