[INFO] cloning repository https://github.com/DonFlat/fust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DonFlat/fust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDonFlat%2Ffust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDonFlat%2Ffust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc026563bf2617bdc035cd300cd5ff213af13448
[INFO] checking DonFlat/fust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDonFlat%2Ffust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
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[INFO] validating manifest of git repo https://github.com/DonFlat/fust 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/DonFlat/fust
[INFO] finished tweaking git repo https://github.com/DonFlat/fust
[INFO] tweaked toml for git repo https://github.com/DonFlat/fust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/DonFlat/fust 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 }`
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[INFO] running `Command { std: "docker" "start" "-a" "f15ca25fc9ccb493574d1c2242b8ea166faf13a8ad362647fec385ebb3599b1a", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `crate::ping_pong_rma::ping_pong`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ping_pong_rma::ping_pong;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `env`, `time`
[INFO] [stdout]  --> src/sor_seq.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{env, time};
[INFO] [stdout]   |           ^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/sor.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env`
[INFO] [stdout]  --> src/sor_rma.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{env, ptr};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Communicator` is imported redundantly
[INFO] [stdout]  --> src/ping_pong_norm.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mpi::traits::*;
[INFO] [stdout]   |     -------------- the item `Communicator` is already imported here
[INFO] [stdout] 2 | use mpi::topology::Communicator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ping_pong_rma::ping_pong`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ping_pong_rma::ping_pong;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `env`, `time`
[INFO] [stdout]  --> src/sor_seq.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{env, time};
[INFO] [stdout]   |           ^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/sor.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env`
[INFO] [stdout]  --> src/sor_rma.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{env, ptr};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Communicator` is imported redundantly
[INFO] [stdout]  --> src/ping_pong_norm.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mpi::traits::*;
[INFO] [stdout]   |     -------------- the item `Communicator` is already imported here
[INFO] [stdout] 2 | use mpi::topology::Communicator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]   --> src/ping_pong_rma.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     for round in 0..round_num {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mat`
[INFO] [stdout]   --> src/sor_seq.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut mat = vec![vec![0.0; n_col]; n_row];
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_mat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/sor_seq.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut m = [[0.0; 1000]; 1000];
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iteration_limit`
[INFO] [stdout]   --> src/sor_seq.rs:15:33
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn sor(problem_size: usize, iteration_limit: usize) {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_iteration_limit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_seq.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut mat = vec![vec![0.0; n_col]; n_row];
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_seq.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut m = [[0.0; 1000]; 1000];
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nsmall`
[INFO] [stdout]   --> src/sor.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nsmall`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut nlarge = n % size; // 1000 % 4 = 0
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut size_small = n / size; // 1000 / 4 = 25
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut lower_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut upper_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let (mut global_lb, mut global_ub) = get_bounds(N - 1, size as usize, rank as usize);
[INFO] [stdout]    |                         ----^^^^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nsmall`
[INFO] [stdout]   --> src/sor_rma.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nsmall`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut nlarge = n % size; // 1000 % 4 = 0
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut size_small = n / size; // 1000 / 4 = 25
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut lower_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut upper_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]  --> src/ping_pong_norm.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let size = world.size();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/ping_pong_norm.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for i in 0..round_num {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_mpi` is never used
[INFO] [stdout]  --> src/use_mpi.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn use_mpi() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_rma` is never used
[INFO] [stdout]   --> src/use_mpi.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn try_rma() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_zeromq_responder` is never used
[INFO] [stdout]  --> src/use_zeromq.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn use_zeromq_responder() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_zeromq_requester` is never used
[INFO] [stdout]   --> src/use_zeromq.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn use_zeromq_requester() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_matrix` is never used
[INFO] [stdout]    --> src/sor.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn print_matrix(matrix: &Vec<Vec<f64>>, n_row: usize, n_col: usize, rank: Rank) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_matrix` is never used
[INFO] [stdout]    --> src/sor_rma.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn print_matrix(matrix: &Vec<Vec<f64>>, n_row: usize, n_col: usize, rank: Rank) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/use_zeromq.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         requester.recv(&mut msg, 0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let _ = requester.recv(&mut msg, 0);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor_seq.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut N: usize  = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut N = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor_rma.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut N: usize  = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]   --> src/ping_pong_rma.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     for round in 0..round_num {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mat`
[INFO] [stdout]   --> src/sor_seq.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut mat = vec![vec![0.0; n_col]; n_row];
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_mat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/sor_seq.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut m = [[0.0; 1000]; 1000];
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iteration_limit`
[INFO] [stdout]   --> src/sor_seq.rs:15:33
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn sor(problem_size: usize, iteration_limit: usize) {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_iteration_limit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 36 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_seq.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut mat = vec![vec![0.0; n_col]; n_row];
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_seq.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut m = [[0.0; 1000]; 1000];
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nsmall`
[INFO] [stdout]   --> src/sor.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nsmall`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut nlarge = n % size; // 1000 % 4 = 0
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut size_small = n / size; // 1000 / 4 = 25
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut lower_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut upper_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let (mut global_lb, mut global_ub) = get_bounds(N - 1, size as usize, rank as usize);
[INFO] [stdout]    |                         ----^^^^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nsmall`
[INFO] [stdout]   --> src/sor_rma.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nsmall`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut nlarge = n % size; // 1000 % 4 = 0
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut size_small = n / size; // 1000 / 4 = 25
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut lower_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut upper_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]  --> src/ping_pong_norm.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let size = world.size();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/ping_pong_norm.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for i in 0..round_num {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_mpi` is never used
[INFO] [stdout]  --> src/use_mpi.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn use_mpi() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_rma` is never used
[INFO] [stdout]   --> src/use_mpi.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn try_rma() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_zeromq_responder` is never used
[INFO] [stdout]  --> src/use_zeromq.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn use_zeromq_responder() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_zeromq_requester` is never used
[INFO] [stdout]   --> src/use_zeromq.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn use_zeromq_requester() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_matrix` is never used
[INFO] [stdout]    --> src/sor.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn print_matrix(matrix: &Vec<Vec<f64>>, n_row: usize, n_col: usize, rank: Rank) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_matrix` is never used
[INFO] [stdout]    --> src/sor_rma.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn print_matrix(matrix: &Vec<Vec<f64>>, n_row: usize, n_col: usize, rank: Rank) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/use_zeromq.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         requester.recv(&mut msg, 0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let _ = requester.recv(&mut msg, 0);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor_seq.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut N: usize  = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut N = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor_rma.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut N: usize  = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 36 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "128debb53a81e94c051ac639547368f490358c629da5101f21e4e3e74fb9dcfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "128debb53a81e94c051ac639547368f490358c629da5101f21e4e3e74fb9dcfb", kill_on_drop: false }`
[INFO] [stdout] 128debb53a81e94c051ac639547368f490358c629da5101f21e4e3e74fb9dcfb
[INFO] checking DonFlat/fust against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDonFlat%2Ffust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DonFlat/fust on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DonFlat/fust
[INFO] finished tweaking git repo https://github.com/DonFlat/fust
[INFO] tweaked toml for git repo https://github.com/DonFlat/fust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/DonFlat/fust 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f07d409372625cba64f97c04f37335d1b95737560be02a4bf692f75a46f533d9
[INFO] running `Command { std: "docker" "start" "-a" "f07d409372625cba64f97c04f37335d1b95737560be02a4bf692f75a46f533d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f07d409372625cba64f97c04f37335d1b95737560be02a4bf692f75a46f533d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f07d409372625cba64f97c04f37335d1b95737560be02a4bf692f75a46f533d9", kill_on_drop: false }`
[INFO] [stdout] f07d409372625cba64f97c04f37335d1b95737560be02a4bf692f75a46f533d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 159fd6853423bada26b70723c7b67e2938dd2e26773e9979a325e8616db05688
[INFO] running `Command { std: "docker" "start" "-a" "159fd6853423bada26b70723c7b67e2938dd2e26773e9979a325e8616db05688", kill_on_drop: false }`
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[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling jwalk v0.8.1
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling serde_spanned v0.6.5
[INFO] [stderr]    Compiling dircpy v0.3.15
[INFO] [stderr]    Compiling toml_edit v0.21.0
[INFO] [stderr]    Compiling zeromq-src v0.2.6+4.3.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling mpi-derive v0.1.1
[INFO] [stderr]    Compiling toml v0.8.8
[INFO] [stderr]    Compiling system-deps v6.2.0
[INFO] [stderr]    Compiling zmq-sys v0.12.0
[INFO] [stderr]    Compiling mpi-sys v0.2.1
[INFO] [stderr]     Checking libffi v3.2.0
[INFO] [stderr]     Checking fust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::ping_pong_rma::ping_pong`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ping_pong_rma::ping_pong;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ping_pong_rma::ping_pong`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ping_pong_rma::ping_pong;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `env`, `time`
[INFO] [stdout]  --> src/sor_seq.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{env, time};
[INFO] [stdout]   |           ^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `env`, `time`
[INFO] [stdout]  --> src/sor_seq.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{env, time};
[INFO] [stdout]   |           ^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/sor.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/sor.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env`
[INFO] [stdout]  --> src/sor_rma.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{env, ptr};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Communicator` is imported redundantly
[INFO] [stdout]  --> src/ping_pong_norm.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mpi::traits::*;
[INFO] [stdout]   |     -------------- the item `Communicator` is already imported here
[INFO] [stdout] 2 | use mpi::topology::Communicator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env`
[INFO] [stdout]  --> src/sor_rma.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{env, ptr};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Communicator` is imported redundantly
[INFO] [stdout]  --> src/ping_pong_norm.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mpi::traits::*;
[INFO] [stdout]   |     -------------- the item `Communicator` is already imported here
[INFO] [stdout] 2 | use mpi::topology::Communicator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]   --> src/ping_pong_rma.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     for round in 0..round_num {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mat`
[INFO] [stdout]   --> src/sor_seq.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut mat = vec![vec![0.0; n_col]; n_row];
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_mat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/sor_seq.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut m = [[0.0; 1000]; 1000];
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iteration_limit`
[INFO] [stdout]   --> src/sor_seq.rs:15:33
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn sor(problem_size: usize, iteration_limit: usize) {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_iteration_limit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_seq.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut mat = vec![vec![0.0; n_col]; n_row];
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_seq.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut m = [[0.0; 1000]; 1000];
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nsmall`
[INFO] [stdout]   --> src/sor.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nsmall`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut nlarge = n % size; // 1000 % 4 = 0
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut size_small = n / size; // 1000 / 4 = 25
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut lower_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut upper_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `round`
[INFO] [stdout]   --> src/ping_pong_rma.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     for round in 0..round_num {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_round`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let (mut global_lb, mut global_ub) = get_bounds(N - 1, size as usize, rank as usize);
[INFO] [stdout]    |                         ----^^^^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mat`
[INFO] [stdout]   --> src/sor_seq.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut mat = vec![vec![0.0; n_col]; n_row];
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_mat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/sor_seq.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut m = [[0.0; 1000]; 1000];
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iteration_limit`
[INFO] [stdout]   --> src/sor_seq.rs:15:33
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn sor(problem_size: usize, iteration_limit: usize) {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_iteration_limit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nsmall`
[INFO] [stdout]   --> src/sor_rma.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nsmall`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut nlarge = n % size; // 1000 % 4 = 0
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut size_small = n / size; // 1000 / 4 = 25
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut lower_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut upper_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_seq.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut mat = vec![vec![0.0; n_col]; n_row];
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_seq.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut m = [[0.0; 1000]; 1000];
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nsmall`
[INFO] [stdout]   --> src/sor.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nsmall`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut nlarge = n % size; // 1000 % 4 = 0
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut size_small = n / size; // 1000 / 4 = 25
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut lower_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut upper_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]  --> src/ping_pong_norm.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let size = world.size();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/ping_pong_norm.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for i in 0..round_num {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor.rs:73:25
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let (mut global_lb, mut global_ub) = get_bounds(N - 1, size as usize, rank as usize);
[INFO] [stdout]    |                         ----^^^^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nsmall`
[INFO] [stdout]   --> src/sor_rma.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nsmall`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut nlarge = n % size; // 1000 % 4 = 0
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut nsmall = size - nlarge; // 4 - 0 = 4
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut size_small = n / size; // 1000 / 4 = 25
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut lower_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sor_rma.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut upper_bound;
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_mpi` is never used
[INFO] [stdout]  --> src/use_mpi.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn use_mpi() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_rma` is never used
[INFO] [stdout]   --> src/use_mpi.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn try_rma() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_zeromq_responder` is never used
[INFO] [stdout]  --> src/use_zeromq.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn use_zeromq_responder() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_zeromq_requester` is never used
[INFO] [stdout]   --> src/use_zeromq.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn use_zeromq_requester() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_matrix` is never used
[INFO] [stdout]    --> src/sor.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn print_matrix(matrix: &Vec<Vec<f64>>, n_row: usize, n_col: usize, rank: Rank) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_matrix` is never used
[INFO] [stdout]    --> src/sor_rma.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn print_matrix(matrix: &Vec<Vec<f64>>, n_row: usize, n_col: usize, rank: Rank) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]  --> src/ping_pong_norm.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let size = world.size();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/ping_pong_norm.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for i in 0..round_num {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/use_zeromq.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         requester.recv(&mut msg, 0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let _ = requester.recv(&mut msg, 0);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor_seq.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut N: usize  = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_mpi` is never used
[INFO] [stdout]  --> src/use_mpi.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn use_mpi() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut N = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_rma` is never used
[INFO] [stdout]   --> src/use_mpi.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn try_rma() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_zeromq_responder` is never used
[INFO] [stdout]  --> src/use_zeromq.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn use_zeromq_responder() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_zeromq_requester` is never used
[INFO] [stdout]   --> src/use_zeromq.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn use_zeromq_requester() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_matrix` is never used
[INFO] [stdout]    --> src/sor.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn print_matrix(matrix: &Vec<Vec<f64>>, n_row: usize, n_col: usize, rank: Rank) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_matrix` is never used
[INFO] [stdout]    --> src/sor_rma.rs:215:4
[INFO] [stdout]     |
[INFO] [stdout] 215 | fn print_matrix(matrix: &Vec<Vec<f64>>, n_row: usize, n_col: usize, rank: Rank) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor_rma.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut N: usize  = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 36 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/use_zeromq.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         requester.recv(&mut msg, 0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let _ = requester.recv(&mut msg, 0);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor_seq.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut N: usize  = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut N = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/sor_rma.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut N: usize  = problem_size;
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 36 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 50.32s
[INFO] running `Command { std: "docker" "inspect" "159fd6853423bada26b70723c7b67e2938dd2e26773e9979a325e8616db05688", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "159fd6853423bada26b70723c7b67e2938dd2e26773e9979a325e8616db05688", kill_on_drop: false }`
[INFO] [stdout] 159fd6853423bada26b70723c7b67e2938dd2e26773e9979a325e8616db05688