[INFO] cloning repository https://github.com/AlessandroBregoli/rgclass
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlessandroBregoli/rgclass" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlessandroBregoli%2Frgclass", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlessandroBregoli%2Frgclass'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2945ba42d809e552bc5330e269f76bea3b582f68
[INFO] checking AlessandroBregoli/rgclass against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlessandroBregoli%2Frgclass" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlessandroBregoli/rgclass on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AlessandroBregoli/rgclass
[INFO] finished tweaking git repo https://github.com/AlessandroBregoli/rgclass
[INFO] tweaked toml for git repo https://github.com/AlessandroBregoli/rgclass written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AlessandroBregoli/rgclass 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lapack v0.18.0
[INFO] [stderr]   Downloaded rand_distr v0.4.2
[INFO] [stderr]   Downloaded cauchy v0.4.0
[INFO] [stderr]   Downloaded lax v0.2.0
[INFO] [stderr]   Downloaded ndarray-linalg v0.14.1
[INFO] [stderr]   Downloaded linfa v0.5.0
[INFO] [stderr]   Downloaded linfa-trees v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17c4a464efcf202ab76ce4c779141a7c081942b0da0f24519c80d6a862f531f5
[INFO] running `Command { std: "docker" "start" "-a" "17c4a464efcf202ab76ce4c779141a7c081942b0da0f24519c80d6a862f531f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17c4a464efcf202ab76ce4c779141a7c081942b0da0f24519c80d6a862f531f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17c4a464efcf202ab76ce4c779141a7c081942b0da0f24519c80d6a862f531f5", kill_on_drop: false }`
[INFO] [stdout] 17c4a464efcf202ab76ce4c779141a7c081942b0da0f24519c80d6a862f531f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23c523b9c476c3da81f7711d6a422b4006d281343417645133b904c489900699
[INFO] running `Command { std: "docker" "start" "-a" "23c523b9c476c3da81f7711d6a422b4006d281343417645133b904c489900699", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]     Checking matrixmultiply v0.3.1
[INFO] [stderr]    Compiling linfa v0.5.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking cblas-sys v0.1.4
[INFO] [stderr]     Checking lapack-sys v0.12.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking rand_distr v0.4.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling openblas-build v0.1.1
[INFO] [stderr]    Compiling openblas-src v0.10.4
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking ndarray v0.15.3
[INFO] [stderr]     Checking lapack v0.18.0
[INFO] [stderr]     Checking cauchy v0.4.0
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking linfa-trees v0.5.0
[INFO] [stderr]     Checking lax v0.2.0
[INFO] [stderr]     Checking ndarray-linalg v0.14.1
[INFO] [stderr]     Checking rgclass v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use linfa;
[INFO] [stdout]   |     ^^^^^ the item `linfa` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa_trees` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use linfa_trees;
[INFO] [stdout]   |     ^^^^^^^^^^^ the item `linfa_trees` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `adj_matrix_to_Laplacian` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn adj_matrix_to_Laplacian(adj_matrix: &Array2<u64>) -> Array2<f64> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `adj_matrix_to_laplacian`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `D_1_2` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let D_1_2 = Array::eye( d_1_2.len()) * &d_1_2;
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `d_1_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `adj_matrix_to_Laplacian` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn adj_matrix_to_Laplacian(adj_matrix: &Array2<u64>) -> Array2<f64> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `adj_matrix_to_laplacian`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `D_1_2` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let D_1_2 = Array::eye( d_1_2.len()) * &d_1_2;
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `d_1_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_adj_matrix_to_Laplacian` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn test_adj_matrix_to_Laplacian(){
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `test_adj_matrix_to_laplacian`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let X = adj_matrices_to_features(&adj_matrices, 4);
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa_trees` is imported redundantly
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use linfa_trees;
[INFO] [stdout]   |     ^^^^^^^^^^^ the item `linfa_trees` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa` is imported redundantly
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use linfa;
[INFO] [stdout]   |     ^^^^^ the item `linfa` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa_trees` is imported redundantly
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use linfa_trees;
[INFO] [stdout]   |     ^^^^^^^^^^^ the item `linfa_trees` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa` is imported redundantly
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use linfa;
[INFO] [stdout]   |     ^^^^^ the item `linfa` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/main.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let X = adj_matrices_to_features(&adj_matricres, n_features);
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/main.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let X = adj_matrices_to_features(&adj_matricres, n_features);
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 12s
[INFO] running `Command { std: "docker" "inspect" "23c523b9c476c3da81f7711d6a422b4006d281343417645133b904c489900699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23c523b9c476c3da81f7711d6a422b4006d281343417645133b904c489900699", kill_on_drop: false }`
[INFO] [stdout] 23c523b9c476c3da81f7711d6a422b4006d281343417645133b904c489900699
[INFO] checking AlessandroBregoli/rgclass against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlessandroBregoli%2Frgclass" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlessandroBregoli/rgclass on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AlessandroBregoli/rgclass
[INFO] finished tweaking git repo https://github.com/AlessandroBregoli/rgclass
[INFO] tweaked toml for git repo https://github.com/AlessandroBregoli/rgclass written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/AlessandroBregoli/rgclass 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efabcea001488677d4471c9e0678551bc69cbf1799bc9070c43a114d278545c6
[INFO] running `Command { std: "docker" "start" "-a" "efabcea001488677d4471c9e0678551bc69cbf1799bc9070c43a114d278545c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efabcea001488677d4471c9e0678551bc69cbf1799bc9070c43a114d278545c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efabcea001488677d4471c9e0678551bc69cbf1799bc9070c43a114d278545c6", kill_on_drop: false }`
[INFO] [stdout] efabcea001488677d4471c9e0678551bc69cbf1799bc9070c43a114d278545c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b56da530ef981891f66e7b2551471cf57d0b42a44b41db90d0b310938869a892
[INFO] running `Command { std: "docker" "start" "-a" "b56da530ef981891f66e7b2551471cf57d0b42a44b41db90d0b310938869a892", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling linfa v0.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]     Checking matrixmultiply v0.3.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking cblas-sys v0.1.4
[INFO] [stderr]     Checking lapack-sys v0.12.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking rand_distr v0.4.2
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling openblas-build v0.1.1
[INFO] [stderr]    Compiling openblas-src v0.10.4
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking ndarray v0.15.3
[INFO] [stderr]     Checking cauchy v0.4.0
[INFO] [stderr]     Checking lapack v0.18.0
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking linfa-trees v0.5.0
[INFO] [stderr]     Checking lax v0.2.0
[INFO] [stderr]     Checking ndarray-linalg v0.14.1
[INFO] [stderr]     Checking rgclass v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use linfa;
[INFO] [stdout]   |     ^^^^^ the item `linfa` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa_trees` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use linfa_trees;
[INFO] [stdout]   |     ^^^^^^^^^^^ the item `linfa_trees` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `adj_matrix_to_Laplacian` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn adj_matrix_to_Laplacian(adj_matrix: &Array2<u64>) -> Array2<f64> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `adj_matrix_to_laplacian`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `D_1_2` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let D_1_2 = Array::eye( d_1_2.len()) * &d_1_2;
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `d_1_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `adj_matrix_to_Laplacian` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn adj_matrix_to_Laplacian(adj_matrix: &Array2<u64>) -> Array2<f64> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `adj_matrix_to_laplacian`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `D_1_2` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let D_1_2 = Array::eye( d_1_2.len()) * &d_1_2;
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `d_1_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_adj_matrix_to_Laplacian` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn test_adj_matrix_to_Laplacian(){
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `test_adj_matrix_to_laplacian`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let X = adj_matrices_to_features(&adj_matrices, 4);
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa_trees` is imported redundantly
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use linfa_trees;
[INFO] [stdout]   |     ^^^^^^^^^^^ the item `linfa_trees` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa` is imported redundantly
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use linfa;
[INFO] [stdout]   |     ^^^^^ the item `linfa` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/main.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let X = adj_matrices_to_features(&adj_matricres, n_features);
[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: the item `linfa_trees` is imported redundantly
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use linfa_trees;
[INFO] [stdout]   |     ^^^^^^^^^^^ the item `linfa_trees` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `linfa` is imported redundantly
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use linfa;
[INFO] [stdout]   |     ^^^^^ the item `linfa` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use log;
[INFO] [stdout]   |     ^^^ the item `log` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `env_logger` is imported redundantly
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `env_logger` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/main.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let X = adj_matrices_to_features(&adj_matricres, n_features);
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 10s
[INFO] running `Command { std: "docker" "inspect" "b56da530ef981891f66e7b2551471cf57d0b42a44b41db90d0b310938869a892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b56da530ef981891f66e7b2551471cf57d0b42a44b41db90d0b310938869a892", kill_on_drop: false }`
[INFO] [stdout] b56da530ef981891f66e7b2551471cf57d0b42a44b41db90d0b310938869a892