[INFO] cloning repository https://github.com/hacknus/n_body_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hacknus/n_body_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhacknus%2Fn_body_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhacknus%2Fn_body_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8cd6a6ecec92f443a82a5e966e1c336c5d2bb3b6
[INFO] testing hacknus/n_body_rust against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhacknus%2Fn_body_rust" "/workspace/builds/worker-22/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-22/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hacknus/n_body_rust on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hacknus/n_body_rust
[INFO] finished tweaking git repo https://github.com/hacknus/n_body_rust
[INFO] tweaked toml for git repo https://github.com/hacknus/n_body_rust written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate git repo https://github.com/hacknus/n_body_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 316ed9719becb92c9166f55342582ae78f18784f584762235e596e0d41525211
[INFO] running `Command { std: "docker" "start" "-a" "316ed9719becb92c9166f55342582ae78f18784f584762235e596e0d41525211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "316ed9719becb92c9166f55342582ae78f18784f584762235e596e0d41525211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "316ed9719becb92c9166f55342582ae78f18784f584762235e596e0d41525211", kill_on_drop: false }`
[INFO] [stdout] 316ed9719becb92c9166f55342582ae78f18784f584762235e596e0d41525211
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51fcccbe0cb6052fb85255aac18573599df7975dfb128b673c4990ce67a53b3b
[INFO] running `Command { std: "docker" "start" "-a" "51fcccbe0cb6052fb85255aac18573599df7975dfb128b673c4990ce67a53b3b", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bstr v0.2.15
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling n_body_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |       return;
[INFO] [stdout]    |       ------ any code following this expression is unreachable
[INFO] [stdout] 43 | 
[INFO] [stdout] 44 | /     for step in 0..*steps {
[INFO] [stdout] 45 | |         dt = get_dt(&bodies);
[INFO] [stdout] 46 | |         dt = 60.0 * 60.0 * 24.0;
[INFO] [stdout] 47 | |         t += dt;
[INFO] [stdout] ...  |
[INFO] [stdout] 55 | |         }
[INFO] [stdout] 56 | |     }
[INFO] [stdout]    | |_____^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `steps`
[INFO] [stdout]   --> src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let steps = &args[2].parse::<u32>().unwrap();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dt`
[INFO] [stdout]   --> src/main.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut dt: Real;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_dt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut t: Real = 0.0;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dt` is never read
[INFO] [stdout]   --> src/main.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         dt = get_dt(&bodies);
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/math_utils.rs:80:10
[INFO] [stdout]    |
[INFO] [stdout] 80 |     for (i, (bi, acci)) in bodies.iter_mut().zip(a.iter()).enumerate() {
[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/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut t: Real = 0.0;
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.42s
[INFO] running `Command { std: "docker" "inspect" "51fcccbe0cb6052fb85255aac18573599df7975dfb128b673c4990ce67a53b3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51fcccbe0cb6052fb85255aac18573599df7975dfb128b673c4990ce67a53b3b", kill_on_drop: false }`
[INFO] [stdout] 51fcccbe0cb6052fb85255aac18573599df7975dfb128b673c4990ce67a53b3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ab6c264bbacb7d47674f90523d770566d604252db337394a8fc0cf9d4b2a454
[INFO] running `Command { std: "docker" "start" "-a" "5ab6c264bbacb7d47674f90523d770566d604252db337394a8fc0cf9d4b2a454", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling n_body_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/math_utils.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |       return;
[INFO] [stdout]    |       ------ any code following this expression is unreachable
[INFO] [stdout] 43 | 
[INFO] [stdout] 44 | /     for step in 0..*steps {
[INFO] [stdout] 45 | |         dt = get_dt(&bodies);
[INFO] [stdout] 46 | |         dt = 60.0 * 60.0 * 24.0;
[INFO] [stdout] 47 | |         t += dt;
[INFO] [stdout] ...  |
[INFO] [stdout] 55 | |         }
[INFO] [stdout] 56 | |     }
[INFO] [stdout]    | |_____^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `steps`
[INFO] [stdout]   --> src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let steps = &args[2].parse::<u32>().unwrap();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dt`
[INFO] [stdout]   --> src/main.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut dt: Real;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_dt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut t: Real = 0.0;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `dt` is never read
[INFO] [stdout]   --> src/main.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         dt = get_dt(&bodies);
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/math_utils.rs:80:10
[INFO] [stdout]    |
[INFO] [stdout] 80 |     for (i, (bi, acci)) in bodies.iter_mut().zip(a.iter()).enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bodies_p`
[INFO] [stdout]    --> src/math_utils.rs:144:17
[INFO] [stdout]     |
[INFO] [stdout] 144 |         let mut bodies_p: Vec<&Body> = vec![&a, &b, &c, &d];
[INFO] [stdout]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bodies_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bodies_p`
[INFO] [stdout]    --> src/math_utils.rs:168:17
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let mut bodies_p: Vec<&Body> = vec![&a, &b, &c, &d];
[INFO] [stdout]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bodies_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut t: Real = 0.0;
[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/math_utils.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let mut a = Vector { x: 1.0, y: 2.0, z: 3.0 };
[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/math_utils.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let mut b = Vector { x: 4.0, y: 5.0, z: 6.0 };
[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/math_utils.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |         let mut c = &a + &b;
[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/math_utils.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         let mut bodies_p: Vec<&Body> = vec![&a, &b, &c, &d];
[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/math_utils.rs:168:13
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let mut bodies_p: Vec<&Body> = vec![&a, &b, &c, &d];
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/n_body_rust-9d7b061ce2ee2ec3)
[INFO] running `Command { std: "docker" "inspect" "5ab6c264bbacb7d47674f90523d770566d604252db337394a8fc0cf9d4b2a454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ab6c264bbacb7d47674f90523d770566d604252db337394a8fc0cf9d4b2a454", kill_on_drop: false }`
[INFO] [stdout] 5ab6c264bbacb7d47674f90523d770566d604252db337394a8fc0cf9d4b2a454
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a6c1947afb9ead0bbfff1a1cdc1b34e2792429f15c53a741596e42aabea77774
[INFO] running `Command { std: "docker" "start" "-a" "a6c1947afb9ead0bbfff1a1cdc1b34e2792429f15c53a741596e42aabea77774", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/math_utils.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |       return;
[INFO] [stderr]    |       ------ any code following this expression is unreachable
[INFO] [stderr] 43 | 
[INFO] [stderr] 44 | /     for step in 0..*steps {
[INFO] [stderr] 45 | |         dt = get_dt(&bodies);
[INFO] [stderr] 46 | |         dt = 60.0 * 60.0 * 24.0;
[INFO] [stderr] 47 | |         t += dt;
[INFO] [stderr] ...  |
[INFO] [stderr] 55 | |         }
[INFO] [stderr] 56 | |     }
[INFO] [stderr]    | |_____^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `steps`
[INFO] [stderr]   --> src/main.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let steps = &args[2].parse::<u32>().unwrap();
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_steps`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dt`
[INFO] [stderr]   --> src/main.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut dt: Real;
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_dt`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/main.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut t: Real = 0.0;
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dt` is never read
[INFO] [stderr]   --> src/main.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         dt = get_dt(&bodies);
[INFO] [stderr]    |         ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/math_utils.rs:80:10
[INFO] [stderr]    |
[INFO] [stderr] 80 |     for (i, (bi, acci)) in bodies.iter_mut().zip(a.iter()).enumerate() {
[INFO] [stderr]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bodies_p`
[INFO] [stderr]    --> src/math_utils.rs:144:17
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let mut bodies_p: Vec<&Body> = vec![&a, &b, &c, &d];
[INFO] [stderr]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bodies_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bodies_p`
[INFO] [stderr]    --> src/math_utils.rs:168:17
[INFO] [stderr]     |
[INFO] [stderr] 168 |         let mut bodies_p: Vec<&Body> = vec![&a, &b, &c, &d];
[INFO] [stderr]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bodies_p`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut t: Real = 0.0;
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/math_utils.rs:129:13
[INFO] [stderr]     |
[INFO] [stderr] 129 |         let mut a = Vector { x: 1.0, y: 2.0, z: 3.0 };
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/math_utils.rs:130:13
[INFO] [stderr]     |
[INFO] [stderr] 130 |         let mut b = Vector { x: 4.0, y: 5.0, z: 6.0 };
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/math_utils.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |         let mut c = &a + &b;
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/math_utils.rs:144:13
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let mut bodies_p: Vec<&Body> = vec![&a, &b, &c, &d];
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/math_utils.rs:168:13
[INFO] [stderr]     |
[INFO] [stderr] 168 |         let mut bodies_p: Vec<&Body> = vec![&a, &b, &c, &d];
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `n_body_rust` (bin "n_body_rust" test) generated 15 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/n_body_rust-9d7b061ce2ee2ec3)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test math_utils::tests::test_add ... ok
[INFO] [stdout] test math_utils::tests::test_direct1 ... ok
[INFO] [stdout] test math_utils::tests::test_direct2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a6c1947afb9ead0bbfff1a1cdc1b34e2792429f15c53a741596e42aabea77774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6c1947afb9ead0bbfff1a1cdc1b34e2792429f15c53a741596e42aabea77774", kill_on_drop: false }`
[INFO] [stdout] a6c1947afb9ead0bbfff1a1cdc1b34e2792429f15c53a741596e42aabea77774