[INFO] fetching crate rusty-machine 0.5.4...
[INFO] checking rusty-machine-0.5.4 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] extracting crate rusty-machine 0.5.4 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate rusty-machine 0.5.4 on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rusty-machine 0.5.4
[INFO] finished tweaking crates.io crate rusty-machine 0.5.4
[INFO] tweaked toml for crates.io crate rusty-machine 0.5.4 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding matrixmultiply v0.1.15 (latest: v0.3.9)
[INFO] [stderr]       Adding num v0.1.42 (latest: v0.4.3)
[INFO] [stderr]       Adding rand v0.3.23 (latest: v0.8.5)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rawpointer v0.1.0 (latest: v0.2.1)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding rulinalg v0.3.7 (latest: v0.4.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80c8f7f2000c78726171ad5afc51064aa8ae9aa0606ede897a56224e7ff4d985
[INFO] running `Command { std: "docker" "start" "-a" "80c8f7f2000c78726171ad5afc51064aa8ae9aa0606ede897a56224e7ff4d985", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80c8f7f2000c78726171ad5afc51064aa8ae9aa0606ede897a56224e7ff4d985", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80c8f7f2000c78726171ad5afc51064aa8ae9aa0606ede897a56224e7ff4d985", kill_on_drop: false }`
[INFO] [stdout] 80c8f7f2000c78726171ad5afc51064aa8ae9aa0606ede897a56224e7ff4d985
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b41269d9e60a48b75abdf537e35f08c462db93d554438b1110591f9e624c4f1b
[INFO] running `Command { std: "docker" "start" "-a" "b41269d9e60a48b75abdf537e35f08c462db93d554438b1110591f9e624c4f1b", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking rulinalg v0.3.7
[INFO] [stderr]     Checking rusty-machine v0.5.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:108:1
[INFO] [stdout]     |
[INFO] [stdout] 108 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/data/transforms/minmax.rs:115:22
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let scales = try!(input_min_max.iter()
[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/data/transforms/minmax.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |             try!(self.fit(&inputs));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/data/transforms/standardize.rs:97:28
[INFO] [stdout]    |
[INFO] [stdout] 97 |             let variance = try!(inputs.variance(Axes::Row).map_err(|_| {
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/data/transforms/standardize.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |             try!(self.fit(&inputs));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/learning/gmm.rs:82:27
[INFO] [stdout]    |
[INFO] [stdout] 82 |             let cov_mat = try!(self.initialize_covariances(inputs, reg_value));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/learning/gmm.rs:93:40
[INFO] [stdout]    |
[INFO] [stdout] 93 |             let (weights, log_lik_1) = try!(self.membership_weights(inputs));
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gmm.rs:110:16
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Ok(try!(self.membership_weights(inputs)).0)
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gmm.rs:229:32
[INFO] [stdout]     |
[INFO] [stdout] 229 |                 let variance = try!(inputs.variance(Axes::Row));
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gmm.rs:265:33
[INFO] [stdout]     |
[INFO] [stdout] 265 |                 let covar_inv = try!(cov.inverse().map_err(Error::from));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/learning/k_means.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |         try!(self.init_centroids(inputs));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/learning/k_means.rs:98:36
[INFO] [stdout]    |
[INFO] [stdout] 98 |             let (idx, distances) = try!(self.get_closest_centroids(inputs));
[INFO] [stdout]    |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/k_means.rs:194:29
[INFO] [stdout]     |
[INFO] [stdout] 194 |             let centroids = try!(self.init_algorithm.init_centroids(self.k, inputs));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gp.rs:151:29
[INFO] [stdout]     |
[INFO] [stdout] 151 |             let post_mean = try!(self.ker_mat(inputs, t_data)) * alpha;
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gp.rs:164:25
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let train_mat = try!((ker_mat + noise_mat).cholesky().map_err(|_| {
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gp.rs:194:36
[INFO] [stdout]     |
[INFO] [stdout] 194 |             let post_mean = mean + try!(self.ker_mat(inputs, t_data)) * alpha;
[INFO] [stdout]     |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gp.rs:196:28
[INFO] [stdout]     |
[INFO] [stdout] 196 |             let test_mat = try!(self.ker_mat(inputs, t_data));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gp.rs:205:28
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let post_var = try!(self.ker_mat(inputs, inputs)) - &v_mat * v_mat.transpose();
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/svm.rs:133:27
[INFO] [stdout]     |
[INFO] [stdout] 133 |             let ker_mat = try!(self.ker_mat(&full_inputs, train_inputs));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/naive_bayes.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let log_probs = try!(self.get_log_probs(inputs));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/naive_bayes.rs:157:25
[INFO] [stdout]     |
[INFO] [stdout] 157 |             let class = try!(NaiveBayes::<T>::find_class(row));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/naive_bayes.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |                 try!(distr.update_params(&inputs.select_rows(&c), idx));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/naive_bayes.rs:268:19
[INFO] [stdout]     |
[INFO] [stdout] 268 |         let var = try!(data.variance(Axes::Row).map_err(|_| {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/learning/toolkit/kernel.rs:292:9
[INFO] [stdout]     |
[INFO] [stdout] 292 |         (self.ampl * x.exp())
[INFO] [stdout]     |         ^                   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 292 -         (self.ampl * x.exp())
[INFO] [stdout] 292 +         self.ampl * x.exp()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/learning/toolkit/kernel.rs:354:9
[INFO] [stdout]     |
[INFO] [stdout] 354 |         (self.ampl * x.exp())
[INFO] [stdout]     |         ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 354 -         (self.ampl * x.exp())
[INFO] [stdout] 354 +         self.ampl * x.exp()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/analysis/cross_validation.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let _ = try!(model.train(&train_inputs, &train_targets));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/analysis/cross_validation.rs:71:23
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let outputs = try!(model.predict(&test_inputs));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/data/transforms/minmax.rs:115:22
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let scales = try!(input_min_max.iter()
[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/data/transforms/minmax.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |             try!(self.fit(&inputs));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/data/transforms/standardize.rs:97:28
[INFO] [stdout]    |
[INFO] [stdout] 97 |             let variance = try!(inputs.variance(Axes::Row).map_err(|_| {
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/data/transforms/standardize.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |             try!(self.fit(&inputs));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/learning/gmm.rs:82:27
[INFO] [stdout]    |
[INFO] [stdout] 82 |             let cov_mat = try!(self.initialize_covariances(inputs, reg_value));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/learning/gmm.rs:93:40
[INFO] [stdout]    |
[INFO] [stdout] 93 |             let (weights, log_lik_1) = try!(self.membership_weights(inputs));
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gmm.rs:110:16
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Ok(try!(self.membership_weights(inputs)).0)
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gmm.rs:229:32
[INFO] [stdout]     |
[INFO] [stdout] 229 |                 let variance = try!(inputs.variance(Axes::Row));
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gmm.rs:265:33
[INFO] [stdout]     |
[INFO] [stdout] 265 |                 let covar_inv = try!(cov.inverse().map_err(Error::from));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/learning/k_means.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |         try!(self.init_centroids(inputs));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/learning/k_means.rs:98:36
[INFO] [stdout]    |
[INFO] [stdout] 98 |             let (idx, distances) = try!(self.get_closest_centroids(inputs));
[INFO] [stdout]    |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/k_means.rs:194:29
[INFO] [stdout]     |
[INFO] [stdout] 194 |             let centroids = try!(self.init_algorithm.init_centroids(self.k, inputs));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gp.rs:151:29
[INFO] [stdout]     |
[INFO] [stdout] 151 |             let post_mean = try!(self.ker_mat(inputs, t_data)) * alpha;
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gp.rs:164:25
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let train_mat = try!((ker_mat + noise_mat).cholesky().map_err(|_| {
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gp.rs:194:36
[INFO] [stdout]     |
[INFO] [stdout] 194 |             let post_mean = mean + try!(self.ker_mat(inputs, t_data)) * alpha;
[INFO] [stdout]     |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gp.rs:196:28
[INFO] [stdout]     |
[INFO] [stdout] 196 |             let test_mat = try!(self.ker_mat(inputs, t_data));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/gp.rs:205:28
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let post_var = try!(self.ker_mat(inputs, inputs)) - &v_mat * v_mat.transpose();
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/svm.rs:133:27
[INFO] [stdout]     |
[INFO] [stdout] 133 |             let ker_mat = try!(self.ker_mat(&full_inputs, train_inputs));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/naive_bayes.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let log_probs = try!(self.get_log_probs(inputs));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/naive_bayes.rs:157:25
[INFO] [stdout]     |
[INFO] [stdout] 157 |             let class = try!(NaiveBayes::<T>::find_class(row));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/naive_bayes.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |                 try!(distr.update_params(&inputs.select_rows(&c), idx));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/learning/naive_bayes.rs:268:19
[INFO] [stdout]     |
[INFO] [stdout] 268 |         let var = try!(data.variance(Axes::Row).map_err(|_| {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/learning/toolkit/kernel.rs:292:9
[INFO] [stdout]     |
[INFO] [stdout] 292 |         (self.ampl * x.exp())
[INFO] [stdout]     |         ^                   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 292 -         (self.ampl * x.exp())
[INFO] [stdout] 292 +         self.ampl * x.exp()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/learning/toolkit/kernel.rs:354:9
[INFO] [stdout]     |
[INFO] [stdout] 354 |         (self.ampl * x.exp())
[INFO] [stdout]     |         ^                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 354 -         (self.ampl * x.exp())
[INFO] [stdout] 354 +         self.ampl * x.exp()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/analysis/cross_validation.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let _ = try!(model.train(&train_inputs, &train_targets));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/analysis/cross_validation.rs:71:23
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let outputs = try!(model.predict(&test_inputs));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/learning/error.rs:62:88
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Error::new(ErrorKind::LinearAlgebra, <rulinalg::error::Error as error::Error>::description(&e))
[INFO] [stdout]    |                                                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/learning/error.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     error: Box<error::Error + Send + Sync>,
[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/nightly/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 an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 |     error: Box<dyn error::Error + Send + Sync>,
[INFO] [stdout]    |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/learning/error.rs:62:88
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Error::new(ErrorKind::LinearAlgebra, <rulinalg::error::Error as error::Error>::description(&e))
[INFO] [stdout]    |                                                                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/learning/error.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     error: Box<error::Error + Send + Sync>,
[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/nightly/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 an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 15 |     error: Box<dyn error::Error + Send + Sync>,
[INFO] [stdout]    |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/learning/error.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |         where E: Into<Box<error::Error + Send + Sync>>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 |         where E: Into<Box<dyn error::Error + Send + Sync>>
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/learning/error.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |         where E: Into<Box<error::Error + Send + Sync>>
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 |         where E: Into<Box<dyn error::Error + Send + Sync>>
[INFO] [stdout]    |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/learning/error.rs:68:20
[INFO] [stdout]    |
[INFO] [stdout] 68 |         self.error.description()
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/learning/error.rs:68:20
[INFO] [stdout]    |
[INFO] [stdout] 68 |         self.error.description()
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/learning/nnet.rs:141:19
[INFO] [stdout]     |
[INFO] [stdout] 139 |     pub fn new(layer_sizes: &'a [usize], criterion: T, alg: A) -> NeuralNet<'a, T, A> {
[INFO] [stdout]     |                                          ------------  ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 140 |         NeuralNet {
[INFO] [stdout] 141 |             base: BaseNeuralNet::new(layer_sizes, criterion),
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]     = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/learning/error.rs:43:20
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn new<E>(kind: ErrorKind, error: E) -> Error
[INFO] [stdout]    |                                    -------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 43 |             error: error.into(),
[INFO] [stdout]    |                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-machine` (lib) due to 3 previous errors; 31 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/data/transforms/minmax.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 |         transformed[[0, 0]].abs() < 1e-10;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 228 |         let _ = transformed[[0, 0]].abs() < 1e-10;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/data/transforms/minmax.rs:229:9
[INFO] [stdout]     |
[INFO] [stdout] 229 |         transformed[[0, 1]].abs() < 1e-10;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 229 |         let _ = transformed[[0, 1]].abs() < 1e-10;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/data/transforms/minmax.rs:230:9
[INFO] [stdout]     |
[INFO] [stdout] 230 |         (transformed[[1, 0]] - 1.0).abs() < 1e-10;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 230 |         let _ = (transformed[[1, 0]] - 1.0).abs() < 1e-10;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/data/transforms/minmax.rs:231:9
[INFO] [stdout]     |
[INFO] [stdout] 231 |         (transformed[[1, 1]] - 1.0).abs() < 1e-10;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 231 |         let _ = (transformed[[1, 1]] - 1.0).abs() < 1e-10;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/data/transforms/minmax.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 245 |         (transformed[[0, 0]] - 1.0).abs() < 1e-10;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 245 |         let _ = (transformed[[0, 0]] - 1.0).abs() < 1e-10;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/data/transforms/minmax.rs:246:9
[INFO] [stdout]     |
[INFO] [stdout] 246 |         (transformed[[0, 1]] - 1.0).abs() < 1e-10;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 246 |         let _ = (transformed[[0, 1]] - 1.0).abs() < 1e-10;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/data/transforms/minmax.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |         (transformed[[1, 0]] - 3.0).abs() < 1e-10;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let _ = (transformed[[1, 0]] - 3.0).abs() < 1e-10;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/data/transforms/minmax.rs:248:9
[INFO] [stdout]     |
[INFO] [stdout] 248 |         (transformed[[1, 1]] - 3.0).abs() < 1e-10;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 248 |         let _ = (transformed[[1, 1]] - 3.0).abs() < 1e-10;
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]    --> src/learning/nnet.rs:141:19
[INFO] [stdout]     |
[INFO] [stdout] 139 |     pub fn new(layer_sizes: &'a [usize], criterion: T, alg: A) -> NeuralNet<'a, T, A> {
[INFO] [stdout]     |                                          ------------  ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 140 |         NeuralNet {
[INFO] [stdout] 141 |             base: BaseNeuralNet::new(layer_sizes, criterion),
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]     = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/learning/error.rs:43:20
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn new<E>(kind: ErrorKind, error: E) -> Error
[INFO] [stdout]    |                                    -------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 43 |             error: error.into(),
[INFO] [stdout]    |                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-machine` (lib test) due to 3 previous errors; 38 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b41269d9e60a48b75abdf537e35f08c462db93d554438b1110591f9e624c4f1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b41269d9e60a48b75abdf537e35f08c462db93d554438b1110591f9e624c4f1b", kill_on_drop: false }`
[INFO] [stdout] b41269d9e60a48b75abdf537e35f08c462db93d554438b1110591f9e624c4f1b