[INFO] updating cached repository https://github.com/Charlsyy/twentyfortyeight
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 90bb1638ec12b10bbd29525c378171cdaf0e5c9a
[INFO] testing Charlsyy/twentyfortyeight against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCharlsyy%2Ftwentyfortyeight" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Charlsyy/twentyfortyeight on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Charlsyy/twentyfortyeight
[INFO] finished tweaking git repo https://github.com/Charlsyy/twentyfortyeight
[INFO] tweaked toml for git repo https://github.com/Charlsyy/twentyfortyeight written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Charlsyy/twentyfortyeight already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 531a93d326418a72461fa45cd0aa93a083f028935ed512e0293916fd91ea40b6
[INFO] running `"docker" "start" "-a" "531a93d326418a72461fa45cd0aa93a083f028935ed512e0293916fd91ea40b6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling ncurses v5.91.0
[INFO] [stderr]    Compiling colored v1.6.0
[INFO] [stderr]    Compiling pancurses v0.14.0
[INFO] [stderr]    Compiling twentyfortyeight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `colored::*`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use colored::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::event::Key`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use termion::event::Key;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::input::TermRead`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use termion::input::TermRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::raw::IntoRawMode`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use termion::raw::IntoRawMode;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Write`, `stdin`, `stdout`
[INFO] [stderr]   --> src/lib.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::io::{stdin, stdout, Write};
[INFO] [stderr]    |               ^^^^^  ^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noidea`
[INFO] [stderr]   --> src/lib.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     for noidea in 0..3 {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_noidea`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noidea`
[INFO] [stderr]   --> src/lib.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     for noidea in 0..3 {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_noidea`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `counter` is never read
[INFO] [stderr]    --> src/lib.rs:271:9
[INFO] [stderr]     |
[INFO] [stderr] 271 |         counter = 0;
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 | pub fn melt_left(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:121:19
[INFO] [stderr]     |
[INFO] [stderr] 121 | pub fn melt_right(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:147:16
[INFO] [stderr]     |
[INFO] [stderr] 147 | pub fn melt_up(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:172:18
[INFO] [stderr]     |
[INFO] [stderr] 172 | pub fn melt_down(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:198:5
[INFO] [stderr]     |
[INFO] [stderr] 198 |     mut num_display: &mut Vec<Vec<&str>>,
[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/lib.rs:199:5
[INFO] [stderr]     |
[INFO] [stderr] 199 |     mut num_calculate: &mut Vec<Vec<i16>>,
[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/lib.rs:268:16
[INFO] [stderr]     |
[INFO] [stderr] 268 | pub fn new_num(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) {
[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/lib.rs:307:15
[INFO] [stderr]     |
[INFO] [stderr] 307 | pub fn backup(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:307:54
[INFO] [stderr]     |
[INFO] [stderr] 307 | pub fn backup(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:315:16
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub fn reverse(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:315:55
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub fn reverse(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[INFO] [stderr]     |                                                       ----^^^^^^^^^^^
[INFO] [stderr]     |                                                       |
[INFO] [stderr]     |                                                       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::raw::IntoRawMode`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use termion::raw::IntoRawMode;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Write`, `stdout`
[INFO] [stderr]  --> src/main.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::{stdin, stdout, Write};
[INFO] [stderr]   |                      ^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.67s
[INFO] running `"docker" "inspect" "531a93d326418a72461fa45cd0aa93a083f028935ed512e0293916fd91ea40b6"`
[INFO] running `"docker" "rm" "-f" "531a93d326418a72461fa45cd0aa93a083f028935ed512e0293916fd91ea40b6"`
[INFO] [stdout] 531a93d326418a72461fa45cd0aa93a083f028935ed512e0293916fd91ea40b6
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stdout] 525d5834577a1f9d1e542d32d4588eea45457bf928be70c824c8b0407e62463f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "525d5834577a1f9d1e542d32d4588eea45457bf928be70c824c8b0407e62463f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling twentyfortyeight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `colored::*`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use colored::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::event::Key`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use termion::event::Key;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::input::TermRead`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use termion::input::TermRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::raw::IntoRawMode`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use termion::raw::IntoRawMode;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Write`, `stdin`, `stdout`
[INFO] [stderr]   --> src/lib.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::io::{stdin, stdout, Write};
[INFO] [stderr]    |               ^^^^^  ^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noidea`
[INFO] [stderr]   --> src/lib.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     for noidea in 0..3 {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_noidea`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noidea`
[INFO] [stderr]   --> src/lib.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     for noidea in 0..3 {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_noidea`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `counter` is never read
[INFO] [stderr]    --> src/lib.rs:271:9
[INFO] [stderr]     |
[INFO] [stderr] 271 |         counter = 0;
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 | pub fn melt_left(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:121:19
[INFO] [stderr]     |
[INFO] [stderr] 121 | pub fn melt_right(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:147:16
[INFO] [stderr]     |
[INFO] [stderr] 147 | pub fn melt_up(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:172:18
[INFO] [stderr]     |
[INFO] [stderr] 172 | pub fn melt_down(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:198:5
[INFO] [stderr]     |
[INFO] [stderr] 198 |     mut num_display: &mut Vec<Vec<&str>>,
[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/lib.rs:199:5
[INFO] [stderr]     |
[INFO] [stderr] 199 |     mut num_calculate: &mut Vec<Vec<i16>>,
[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/lib.rs:268:16
[INFO] [stderr]     |
[INFO] [stderr] 268 | pub fn new_num(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) {
[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/lib.rs:307:15
[INFO] [stderr]     |
[INFO] [stderr] 307 | pub fn backup(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:307:54
[INFO] [stderr]     |
[INFO] [stderr] 307 | pub fn backup(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:315:16
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub fn reverse(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:315:55
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub fn reverse(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[INFO] [stderr]     |                                                       ----^^^^^^^^^^^
[INFO] [stderr]     |                                                       |
[INFO] [stderr]     |                                                       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::raw::IntoRawMode`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use termion::raw::IntoRawMode;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Write`, `stdout`
[INFO] [stderr]  --> src/main.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::{stdin, stdout, Write};
[INFO] [stderr]   |                      ^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `colored::*`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use colored::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::event::Key`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use termion::event::Key;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::input::TermRead`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use termion::input::TermRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::raw::IntoRawMode`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use termion::raw::IntoRawMode;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Write`, `stdin`, `stdout`
[INFO] [stderr]   --> src/lib.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::io::{stdin, stdout, Write};
[INFO] [stderr]    |               ^^^^^  ^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noidea`
[INFO] [stderr]   --> src/lib.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     for noidea in 0..3 {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_noidea`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noidea`
[INFO] [stderr]   --> src/lib.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     for noidea in 0..3 {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_noidea`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `counter` is never read
[INFO] [stderr]    --> src/lib.rs:271:9
[INFO] [stderr]     |
[INFO] [stderr] 271 |         counter = 0;
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 | pub fn melt_left(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:121:19
[INFO] [stderr]     |
[INFO] [stderr] 121 | pub fn melt_right(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:147:16
[INFO] [stderr]     |
[INFO] [stderr] 147 | pub fn melt_up(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:172:18
[INFO] [stderr]     |
[INFO] [stderr] 172 | pub fn melt_down(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:198:5
[INFO] [stderr]     |
[INFO] [stderr] 198 |     mut num_display: &mut Vec<Vec<&str>>,
[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/lib.rs:199:5
[INFO] [stderr]     |
[INFO] [stderr] 199 |     mut num_calculate: &mut Vec<Vec<i16>>,
[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/lib.rs:268:16
[INFO] [stderr]     |
[INFO] [stderr] 268 | pub fn new_num(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) {
[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/lib.rs:307:15
[INFO] [stderr]     |
[INFO] [stderr] 307 | pub fn backup(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:307:54
[INFO] [stderr]     |
[INFO] [stderr] 307 | pub fn backup(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:315:16
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub fn reverse(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:315:55
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub fn reverse(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[INFO] [stderr]     |                                                       ----^^^^^^^^^^^
[INFO] [stderr]     |                                                       |
[INFO] [stderr]     |                                                       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "525d5834577a1f9d1e542d32d4588eea45457bf928be70c824c8b0407e62463f"`
[INFO] running `"docker" "rm" "-f" "525d5834577a1f9d1e542d32d4588eea45457bf928be70c824c8b0407e62463f"`
[INFO] [stdout] 525d5834577a1f9d1e542d32d4588eea45457bf928be70c824c8b0407e62463f
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stdout] 2df8dff73a9d94e76de0e520e427549ce675809db9125fec01908ecc5dc7c701
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "2df8dff73a9d94e76de0e520e427549ce675809db9125fec01908ecc5dc7c701"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `colored::*`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use colored::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::event::Key`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use termion::event::Key;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::input::TermRead`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use termion::input::TermRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::raw::IntoRawMode`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use termion::raw::IntoRawMode;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Write`, `stdin`, `stdout`
[INFO] [stderr]   --> src/lib.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::io::{stdin, stdout, Write};
[INFO] [stderr]    |               ^^^^^  ^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noidea`
[INFO] [stderr]   --> src/lib.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     for noidea in 0..3 {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_noidea`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noidea`
[INFO] [stderr]   --> src/lib.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     for noidea in 0..3 {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_noidea`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `counter` is never read
[INFO] [stderr]    --> src/lib.rs:271:9
[INFO] [stderr]     |
[INFO] [stderr] 271 |         counter = 0;
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 | pub fn melt_left(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:121:19
[INFO] [stderr]     |
[INFO] [stderr] 121 | pub fn melt_right(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:147:16
[INFO] [stderr]     |
[INFO] [stderr] 147 | pub fn melt_up(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:172:18
[INFO] [stderr]     |
[INFO] [stderr] 172 | pub fn melt_down(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:198:5
[INFO] [stderr]     |
[INFO] [stderr] 198 |     mut num_display: &mut Vec<Vec<&str>>,
[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/lib.rs:199:5
[INFO] [stderr]     |
[INFO] [stderr] 199 |     mut num_calculate: &mut Vec<Vec<i16>>,
[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/lib.rs:268:16
[INFO] [stderr]     |
[INFO] [stderr] 268 | pub fn new_num(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) {
[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/lib.rs:307:15
[INFO] [stderr]     |
[INFO] [stderr] 307 | pub fn backup(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:307:54
[INFO] [stderr]     |
[INFO] [stderr] 307 | pub fn backup(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:315:16
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub fn reverse(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:315:55
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub fn reverse(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[INFO] [stderr]     |                                                       ----^^^^^^^^^^^
[INFO] [stderr]     |                                                       |
[INFO] [stderr]     |                                                       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `colored::*`
[INFO] [stderr]  --> src/lib.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use colored::*;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::event::Key`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use termion::event::Key;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::input::TermRead`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use termion::input::TermRead;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::raw::IntoRawMode`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use termion::raw::IntoRawMode;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Write`, `stdin`, `stdout`
[INFO] [stderr]   --> src/lib.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::io::{stdin, stdout, Write};
[INFO] [stderr]    |               ^^^^^  ^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noidea`
[INFO] [stderr]   --> src/lib.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     for noidea in 0..3 {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_noidea`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noidea`
[INFO] [stderr]   --> src/lib.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     for noidea in 0..3 {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_noidea`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `counter` is never read
[INFO] [stderr]    --> src/lib.rs:271:9
[INFO] [stderr]     |
[INFO] [stderr] 271 |         counter = 0;
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 | pub fn melt_left(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:121:19
[INFO] [stderr]     |
[INFO] [stderr] 121 | pub fn melt_right(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:147:16
[INFO] [stderr]     |
[INFO] [stderr] 147 | pub fn melt_up(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:172:18
[INFO] [stderr]     |
[INFO] [stderr] 172 | pub fn melt_down(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) -> i8 {
[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/lib.rs:198:5
[INFO] [stderr]     |
[INFO] [stderr] 198 |     mut num_display: &mut Vec<Vec<&str>>,
[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/lib.rs:199:5
[INFO] [stderr]     |
[INFO] [stderr] 199 |     mut num_calculate: &mut Vec<Vec<i16>>,
[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/lib.rs:268:16
[INFO] [stderr]     |
[INFO] [stderr] 268 | pub fn new_num(mut num_calculate: &mut Vec<Vec<i16>>, mut counter: i8) {
[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/lib.rs:307:15
[INFO] [stderr]     |
[INFO] [stderr] 307 | pub fn backup(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:307:54
[INFO] [stderr]     |
[INFO] [stderr] 307 | pub fn backup(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:315:16
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub fn reverse(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[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/lib.rs:315:55
[INFO] [stderr]     |
[INFO] [stderr] 315 | pub fn reverse(mut num_calculate: &mut Vec<Vec<i16>>, mut num_reverse: &mut Vec<Vec<i16>>) {
[INFO] [stderr]     |                                                       ----^^^^^^^^^^^
[INFO] [stderr]     |                                                       |
[INFO] [stderr]     |                                                       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `termion::raw::IntoRawMode`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use termion::raw::IntoRawMode;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Write`, `stdout`
[INFO] [stderr]  --> src/main.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::{stdin, stdout, Write};
[INFO] [stderr]   |                      ^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/twentyfortyeight-d644a8d43896761c
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/twentyfortyeight-1e7846841751c0a1
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests twentyfortyeight
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2df8dff73a9d94e76de0e520e427549ce675809db9125fec01908ecc5dc7c701"`
[INFO] running `"docker" "rm" "-f" "2df8dff73a9d94e76de0e520e427549ce675809db9125fec01908ecc5dc7c701"`
[INFO] [stdout] 2df8dff73a9d94e76de0e520e427549ce675809db9125fec01908ecc5dc7c701