[INFO] fetching crate abc 0.2.3...
[INFO] checking abc-0.2.3 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate abc 0.2.3 into /workspace/builds/worker-4-tc2/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-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate abc 0.2.3 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23ae3a2e4c5851f5cb8f6769ba5208956e82f05fa6cba5008584e3530948600c
[INFO] running `Command { std: "docker" "start" "-a" "23ae3a2e4c5851f5cb8f6769ba5208956e82f05fa6cba5008584e3530948600c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23ae3a2e4c5851f5cb8f6769ba5208956e82f05fa6cba5008584e3530948600c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23ae3a2e4c5851f5cb8f6769ba5208956e82f05fa6cba5008584e3530948600c", kill_on_drop: false }`
[INFO] [stdout] 23ae3a2e4c5851f5cb8f6769ba5208956e82f05fa6cba5008584e3530948600c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89b23a80d54b60397cb50e09f69b51edec86b89548c1abe88e4120b097132122
[INFO] running `Command { std: "docker" "start" "-a" "89b23a80d54b60397cb50e09f69b51edec86b89548c1abe88e4120b097132122", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking 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: 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)]` 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/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)]` 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: 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: 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 2.70s
[INFO] running `Command { std: "docker" "inspect" "89b23a80d54b60397cb50e09f69b51edec86b89548c1abe88e4120b097132122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89b23a80d54b60397cb50e09f69b51edec86b89548c1abe88e4120b097132122", kill_on_drop: false }`
[INFO] [stdout] 89b23a80d54b60397cb50e09f69b51edec86b89548c1abe88e4120b097132122