[INFO] fetching crate simple_ml 0.3.2... [INFO] checking simple_ml-0.3.2 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] extracting crate simple_ml 0.3.2 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate simple_ml 0.3.2 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate simple_ml 0.3.2 [INFO] finished tweaking crates.io crate simple_ml 0.3.2 [INFO] tweaked toml for crates.io crate simple_ml 0.3.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate crates.io crate simple_ml 0.3.2 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9596876021b8b97d30de3ff39e78f69da3335f69655fce9d77d53a62f1ea9c61 [INFO] running `Command { std: "docker" "start" "-a" "9596876021b8b97d30de3ff39e78f69da3335f69655fce9d77d53a62f1ea9c61", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9596876021b8b97d30de3ff39e78f69da3335f69655fce9d77d53a62f1ea9c61", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9596876021b8b97d30de3ff39e78f69da3335f69655fce9d77d53a62f1ea9c61", kill_on_drop: false }` [INFO] [stdout] 9596876021b8b97d30de3ff39e78f69da3335f69655fce9d77d53a62f1ea9c61 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] de50b5064ca3e06db828bf28a63ad1a389608c019ccbf90a7d5f6c2550e65314 [INFO] running `Command { std: "docker" "start" "-a" "de50b5064ca3e06db828bf28a63ad1a389608c019ccbf90a7d5f6c2550e65314", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.70 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Checking ppv-lite86 v0.2.8 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking libmath v0.2.1 [INFO] [stderr] Checking simple_ml v0.3.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:1858:13 [INFO] [stdout] | [INFO] [stdout] 1858 | (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] | ^ [INFO] [stdout] 1859 | * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))) [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 1858 ~ a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] 1859 ~ * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:1858:13 [INFO] [stdout] | [INFO] [stdout] 1858 | (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] | ^ [INFO] [stdout] 1859 | * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))) [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 1858 ~ a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] 1859 ~ * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:3774:9 [INFO] [stdout] | [INFO] [stdout] 3774 | (actual / larger as f64) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 3774 - (actual / larger as f64) [INFO] [stdout] 3774 + actual / larger as f64 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:3774:9 [INFO] [stdout] | [INFO] [stdout] 3774 | (actual / larger as f64) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 3774 - (actual / larger as f64) [INFO] [stdout] 3774 + actual / larger as f64 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `new_mean` is never read [INFO] [stdout] --> src/lib.rs:877:17 [INFO] [stdout] | [INFO] [stdout] 877 | let mut new_mean: Vec> = vec![]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `new_mean` is never read [INFO] [stdout] --> src/lib.rs:877:17 [INFO] [stdout] | [INFO] [stdout] 877 | let mut new_mean: Vec> = vec![]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `X` should have a snake case name [INFO] [stdout] --> src/lib.rs:496:13 [INFO] [stdout] | [INFO] [stdout] 496 | let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X [INFO] [stdout] | ^ help: convert the identifier to snake case (notice the capitalization): `x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `X` should have a snake case name [INFO] [stdout] --> src/lib.rs:496:13 [INFO] [stdout] | [INFO] [stdout] 496 | let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X [INFO] [stdout] | ^ help: convert the identifier to snake case (notice the capitalization): `x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: found module declaration for lib.rs [INFO] [stdout] --> src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | mod lib; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: lib.rs is the root of this crate's library target [INFO] [stdout] = help: to refer to it from other targets, use the library's name as the path [INFO] [stdout] = note: `#[warn(special_module_name)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: found module declaration for lib.rs [INFO] [stdout] --> src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | mod lib; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: lib.rs is the root of this crate's library target [INFO] [stdout] = help: to refer to it from other targets, use the library's name as the path [INFO] [stdout] = note: `#[warn(special_module_name)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:1858:13 [INFO] [stdout] | [INFO] [stdout] 1858 | (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] | ^ [INFO] [stdout] 1859 | * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))) [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 1858 ~ a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] 1859 ~ * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:1858:13 [INFO] [stdout] | [INFO] [stdout] 1858 | (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] | ^ [INFO] [stdout] 1859 | * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))) [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 1858 ~ a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] 1859 ~ * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:3774:9 [INFO] [stdout] | [INFO] [stdout] 3774 | (actual / larger as f64) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 3774 - (actual / larger as f64) [INFO] [stdout] 3774 + actual / larger as f64 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:3774:9 [INFO] [stdout] | [INFO] [stdout] 3774 | (actual / larger as f64) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 3774 - (actual / larger as f64) [INFO] [stdout] 3774 + actual / larger as f64 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `new_mean` is never read [INFO] [stdout] --> src/lib.rs:877:17 [INFO] [stdout] | [INFO] [stdout] 877 | let mut new_mean: Vec> = vec![]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `new_mean` is never read [INFO] [stdout] --> src/lib.rs:877:17 [INFO] [stdout] | [INFO] [stdout] 877 | let mut new_mean: Vec> = vec![]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `weights` [INFO] [stdout] --> src/main.rs:960:9 [INFO] [stdout] | [INFO] [stdout] 960 | let weights = svm.fit(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_weights` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `weights` [INFO] [stdout] --> src/main.rs:960:9 [INFO] [stdout] | [INFO] [stdout] 960 | let weights = svm.fit(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_weights` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `impute_string` is never used [INFO] [stdout] --> src/lib.rs:1401:8 [INFO] [stdout] | [INFO] [stdout] 1401 | pub fn impute_string<'a>(list: &'a mut Vec, impute_with: &'a str) -> Vec<&'a str> { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `logistic_function_f` is never used [INFO] [stdout] --> src/lib.rs:1445:8 [INFO] [stdout] | [INFO] [stdout] 1445 | pub fn logistic_function_f(matrix: &Vec>, beta: &Vec>) -> Vec> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `log_gradient_f` is never used [INFO] [stdout] --> src/lib.rs:1462:8 [INFO] [stdout] | [INFO] [stdout] 1462 | pub fn log_gradient_f( [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `logistic_predict` is never used [INFO] [stdout] --> src/lib.rs:1507:8 [INFO] [stdout] | [INFO] [stdout] 1507 | pub fn logistic_predict(matrix1: &Vec>, beta: &Vec>) -> Vec> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `best_fit_line` is never used [INFO] [stdout] --> src/lib.rs:4568:8 [INFO] [stdout] | [INFO] [stdout] 4568 | pub fn best_fit_line(x: &Vec, y: &Vec) -> (f64, f64) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:327:5 [INFO] [stdout] | [INFO] [stdout] 327 | &head(&join_matrix(&a, &b, "long"), 2); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow 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] 327 | let _ = &head(&join_matrix(&a, &b, "long"), 2); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:328:5 [INFO] [stdout] | [INFO] [stdout] 328 | &tail(&join_matrix(&a, &b, "long"), 2); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 328 | let _ = &tail(&join_matrix(&a, &b, "long"), 2); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `X` should have a snake case name [INFO] [stdout] --> src/lib.rs:496:13 [INFO] [stdout] | [INFO] [stdout] 496 | let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X [INFO] [stdout] | ^ help: convert the identifier to snake case (notice the capitalization): `x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `impute_string` is never used [INFO] [stdout] --> src/lib.rs:1401:8 [INFO] [stdout] | [INFO] [stdout] 1401 | pub fn impute_string<'a>(list: &'a mut Vec, impute_with: &'a str) -> Vec<&'a str> { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `logistic_function_f` is never used [INFO] [stdout] --> src/lib.rs:1445:8 [INFO] [stdout] | [INFO] [stdout] 1445 | pub fn logistic_function_f(matrix: &Vec>, beta: &Vec>) -> Vec> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `log_gradient_f` is never used [INFO] [stdout] --> src/lib.rs:1462:8 [INFO] [stdout] | [INFO] [stdout] 1462 | pub fn log_gradient_f( [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `logistic_predict` is never used [INFO] [stdout] --> src/lib.rs:1507:8 [INFO] [stdout] | [INFO] [stdout] 1507 | pub fn logistic_predict(matrix1: &Vec>, beta: &Vec>) -> Vec> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `best_fit_line` is never used [INFO] [stdout] --> src/lib.rs:4568:8 [INFO] [stdout] | [INFO] [stdout] 4568 | pub fn best_fit_line(x: &Vec, y: &Vec) -> (f64, f64) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:327:5 [INFO] [stdout] | [INFO] [stdout] 327 | &head(&join_matrix(&a, &b, "long"), 2); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow 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] 327 | let _ = &head(&join_matrix(&a, &b, "long"), 2); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:328:5 [INFO] [stdout] | [INFO] [stdout] 328 | &tail(&join_matrix(&a, &b, "long"), 2); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 328 | let _ = &tail(&join_matrix(&a, &b, "long"), 2); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `X` should have a snake case name [INFO] [stdout] --> src/lib.rs:496:13 [INFO] [stdout] | [INFO] [stdout] 496 | let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X [INFO] [stdout] | ^ help: convert the identifier to snake case (notice the capitalization): `x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.78s [INFO] running `Command { std: "docker" "inspect" "de50b5064ca3e06db828bf28a63ad1a389608c019ccbf90a7d5f6c2550e65314", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "de50b5064ca3e06db828bf28a63ad1a389608c019ccbf90a7d5f6c2550e65314", kill_on_drop: false }` [INFO] [stdout] de50b5064ca3e06db828bf28a63ad1a389608c019ccbf90a7d5f6c2550e65314 [INFO] checking simple_ml-0.3.2 against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu [INFO] extracting crate simple_ml 0.3.2 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate simple_ml 0.3.2 on toolchain f9935d29d867449445ee008640ccca1bf1ae0889 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate simple_ml 0.3.2 [INFO] finished tweaking crates.io crate simple_ml 0.3.2 [INFO] tweaked toml for crates.io crate simple_ml 0.3.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate crates.io crate simple_ml 0.3.2 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6cca7c5a691ba78c0b0618691a6cd9444c91cd749e9a5a52a12012eddd3b52ba [INFO] running `Command { std: "docker" "start" "-a" "6cca7c5a691ba78c0b0618691a6cd9444c91cd749e9a5a52a12012eddd3b52ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6cca7c5a691ba78c0b0618691a6cd9444c91cd749e9a5a52a12012eddd3b52ba", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6cca7c5a691ba78c0b0618691a6cd9444c91cd749e9a5a52a12012eddd3b52ba", kill_on_drop: false }` [INFO] [stdout] 6cca7c5a691ba78c0b0618691a6cd9444c91cd749e9a5a52a12012eddd3b52ba [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b682bbd3af32ed008e12b432a2be80c1b91f030cac4c5bdea5ea2a01400bac10 [INFO] running `Command { std: "docker" "start" "-a" "b682bbd3af32ed008e12b432a2be80c1b91f030cac4c5bdea5ea2a01400bac10", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.70 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking ppv-lite86 v0.2.8 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking libmath v0.2.1 [INFO] [stderr] Checking simple_ml v0.3.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:1858:13 [INFO] [stdout] | [INFO] [stdout] 1858 | (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] | ^ [INFO] [stdout] 1859 | * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))) [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 1858 ~ a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] 1859 ~ * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:3774:9 [INFO] [stdout] | [INFO] [stdout] 3774 | (actual / larger as f64) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 3774 - (actual / larger as f64) [INFO] [stdout] 3774 + actual / larger as f64 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:1858:13 [INFO] [stdout] | [INFO] [stdout] 1858 | (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] | ^ [INFO] [stdout] 1859 | * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))) [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 1858 ~ a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)) [INFO] [stdout] 1859 ~ * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:3774:9 [INFO] [stdout] | [INFO] [stdout] 3774 | (actual / larger as f64) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 3774 - (actual / larger as f64) [INFO] [stdout] 3774 + actual / larger as f64 [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `new_mean` is never read [INFO] [stdout] --> src/lib.rs:877:17 [INFO] [stdout] | [INFO] [stdout] 877 | let mut new_mean: Vec> = vec![]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `new_mean` is never read [INFO] [stdout] --> src/lib.rs:877:17 [INFO] [stdout] | [INFO] [stdout] 877 | let mut new_mean: Vec> = vec![]; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `X` should have a snake case name [INFO] [stdout] --> src/lib.rs:496:13 [INFO] [stdout] | [INFO] [stdout] 496 | let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X [INFO] [stdout] | ^ help: convert the identifier to snake case (notice the capitalization): `x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [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/lib.rs:1218:24 [INFO] [stdout] | [INFO] [stdout] 1218 | .map(|x| (*x - mu.to_string().parse().unwrap()) * (*x - mu.to_string().parse().unwrap())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #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/lib.rs:1218:65 [INFO] [stdout] | [INFO] [stdout] 1218 | .map(|x| (*x - mu.to_string().parse().unwrap()) * (*x - mu.to_string().parse().unwrap())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `X` should have a snake case name [INFO] [stdout] --> src/lib.rs:496:13 [INFO] [stdout] | [INFO] [stdout] 496 | let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X [INFO] [stdout] | ^ help: convert the identifier to snake case (notice the capitalization): `x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [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/lib.rs:1218:24 [INFO] [stdout] | [INFO] [stdout] 1218 | .map(|x| (*x - mu.to_string().parse().unwrap()) * (*x - mu.to_string().parse().unwrap())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #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/lib.rs:1218:65 [INFO] [stdout] | [INFO] [stdout] 1218 | .map(|x| (*x - mu.to_string().parse().unwrap()) * (*x - mu.to_string().parse().unwrap())) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `simple_ml` (lib) due to 3 previous errors; 4 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `simple_ml` (lib test) due to 3 previous errors; 4 warnings emitted [INFO] running `Command { std: "docker" "inspect" "b682bbd3af32ed008e12b432a2be80c1b91f030cac4c5bdea5ea2a01400bac10", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b682bbd3af32ed008e12b432a2be80c1b91f030cac4c5bdea5ea2a01400bac10", kill_on_drop: false }` [INFO] [stdout] b682bbd3af32ed008e12b432a2be80c1b91f030cac4c5bdea5ea2a01400bac10