[INFO] cloning repository https://github.com/jramos14/Matrix-Operations
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jramos14/Matrix-Operations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjramos14%2FMatrix-Operations"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjramos14%2FMatrix-Operations'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9ebe42742b34b75e71fee96f253fad6cde6fa9ba
[INFO] checking jramos14/Matrix-Operations against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjramos14%2FMatrix-Operations" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jramos14/Matrix-Operations on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jramos14/Matrix-Operations
[INFO] finished tweaking git repo https://github.com/jramos14/Matrix-Operations
[INFO] tweaked toml for git repo https://github.com/jramos14/Matrix-Operations written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/jramos14/Matrix-Operations already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5a6b4b38120daa03a85a5199f32e81b89e395e12b393b2cee62719c711a486e3
[INFO] running `"docker" "start" "-a" "5a6b4b38120daa03a85a5199f32e81b89e395e12b393b2cee62719c711a486e3"`
[INFO] [stderr]     Checking your v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::ops::Add`
[INFO] [stderr]    --> src/lib.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 | use std::ops::Add;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Add`
[INFO] [stderr]    --> src/lib.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 | use std::ops::Add;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack1`
[INFO] [stderr]    --> src/lib.rs:235:9
[INFO] [stderr]     |
[INFO] [stderr] 235 |     let mut stack1: Vec<T> = vec![];
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack2`
[INFO] [stderr]    --> src/lib.rs:236:9
[INFO] [stderr]     |
[INFO] [stderr] 236 |     let mut stack2: Vec<T> = vec![];
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack3`
[INFO] [stderr]    --> src/lib.rs:237:9
[INFO] [stderr]     |
[INFO] [stderr] 237 |     let mut stack3: Vec<T> = vec![];
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `empty_stack`
[INFO] [stderr]    --> src/lib.rs:238:9
[INFO] [stderr]     |
[INFO] [stderr] 238 |     let mut empty_stack: Vec<T> = vec![];
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_empty_stack`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `columnIndex`
[INFO] [stderr]    --> src/lib.rs:358:13
[INFO] [stderr]     |
[INFO] [stderr] 358 |         let mut columnIndex = 0;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_columnIndex`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |     let mut empty_vec = Vec::new();
[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:183:13
[INFO] [stderr]     |
[INFO] [stderr] 183 |         let mut size = self.row * self.col;
[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:210:13
[INFO] [stderr]     |
[INFO] [stderr] 210 |         let mut size = self.row * self.col;
[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:235:9
[INFO] [stderr]     |
[INFO] [stderr] 235 |     let mut stack1: Vec<T> = vec![];
[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:236:9
[INFO] [stderr]     |
[INFO] [stderr] 236 |     let mut stack2: Vec<T> = vec![];
[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:237:9
[INFO] [stderr]     |
[INFO] [stderr] 237 |     let mut stack3: Vec<T> = vec![];
[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:238:9
[INFO] [stderr]     |
[INFO] [stderr] 238 |     let mut empty_stack: Vec<T> = vec![];
[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:356:13
[INFO] [stderr]     |
[INFO] [stderr] 356 |         let mut stringSpace = " ";
[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:357:13
[INFO] [stderr]     |
[INFO] [stderr] 357 |         let mut stringNewline = "\n";
[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:358:13
[INFO] [stderr]     |
[INFO] [stderr] 358 |         let mut columnIndex = 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/lib.rs:372:21
[INFO] [stderr]     |
[INFO] [stderr] 372 |                 let mut stringElement : String = self.data[k].to_string();
[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:380:21
[INFO] [stderr]     |
[INFO] [stderr] 380 |                 let mut stringElement : String = self.data[k].to_string();
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `resultMatrix` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:355:17
[INFO] [stderr]     |
[INFO] [stderr] 355 |         let mut resultMatrix = "".to_string();
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: convert the identifier to snake case: `result_matrix`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `stringSpace` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:356:17
[INFO] [stderr]     |
[INFO] [stderr] 356 |         let mut stringSpace = " ";
[INFO] [stderr]     |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `string_space`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `stringNewline` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:357:17
[INFO] [stderr]     |
[INFO] [stderr] 357 |         let mut stringNewline = "\n";
[INFO] [stderr]     |                 ^^^^^^^^^^^^^ help: convert the identifier to snake case: `string_newline`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `columnIndex` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:358:17
[INFO] [stderr]     |
[INFO] [stderr] 358 |         let mut columnIndex = 0;
[INFO] [stderr]     |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `column_index`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `stringElement` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:372:25
[INFO] [stderr]     |
[INFO] [stderr] 372 |                 let mut stringElement : String = self.data[k].to_string();
[INFO] [stderr]     |                         ^^^^^^^^^^^^^ help: convert the identifier to snake case: `string_element`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `stringElement` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:380:25
[INFO] [stderr]     |
[INFO] [stderr] 380 |                 let mut stringElement : String = self.data[k].to_string();
[INFO] [stderr]     |                         ^^^^^^^^^^^^^ help: convert the identifier to snake case: `string_element`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack1`
[INFO] [stderr]    --> src/lib.rs:235:9
[INFO] [stderr]     |
[INFO] [stderr] 235 |     let mut stack1: Vec<T> = vec![];
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack2`
[INFO] [stderr]    --> src/lib.rs:236:9
[INFO] [stderr]     |
[INFO] [stderr] 236 |     let mut stack2: Vec<T> = vec![];
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack3`
[INFO] [stderr]    --> src/lib.rs:237:9
[INFO] [stderr]     |
[INFO] [stderr] 237 |     let mut stack3: Vec<T> = vec![];
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `empty_stack`
[INFO] [stderr]    --> src/lib.rs:238:9
[INFO] [stderr]     |
[INFO] [stderr] 238 |     let mut empty_stack: Vec<T> = vec![];
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_empty_stack`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `columnIndex`
[INFO] [stderr]    --> src/lib.rs:358:13
[INFO] [stderr]     |
[INFO] [stderr] 358 |         let mut columnIndex = 0;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_columnIndex`
[INFO] [stderr] 
[INFO] [stderr] warning: 24 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |     let mut empty_vec = Vec::new();
[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:183:13
[INFO] [stderr]     |
[INFO] [stderr] 183 |         let mut size = self.row * self.col;
[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:210:13
[INFO] [stderr]     |
[INFO] [stderr] 210 |         let mut size = self.row * self.col;
[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:235:9
[INFO] [stderr]     |
[INFO] [stderr] 235 |     let mut stack1: Vec<T> = vec![];
[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:236:9
[INFO] [stderr]     |
[INFO] [stderr] 236 |     let mut stack2: Vec<T> = vec![];
[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:237:9
[INFO] [stderr]     |
[INFO] [stderr] 237 |     let mut stack3: Vec<T> = vec![];
[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:238:9
[INFO] [stderr]     |
[INFO] [stderr] 238 |     let mut empty_stack: Vec<T> = vec![];
[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:356:13
[INFO] [stderr]     |
[INFO] [stderr] 356 |         let mut stringSpace = " ";
[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:357:13
[INFO] [stderr]     |
[INFO] [stderr] 357 |         let mut stringNewline = "\n";
[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:358:13
[INFO] [stderr]     |
[INFO] [stderr] 358 |         let mut columnIndex = 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/lib.rs:372:21
[INFO] [stderr]     |
[INFO] [stderr] 372 |                 let mut stringElement : String = self.data[k].to_string();
[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:380:21
[INFO] [stderr]     |
[INFO] [stderr] 380 |                 let mut stringElement : String = self.data[k].to_string();
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `resultMatrix` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:355:17
[INFO] [stderr]     |
[INFO] [stderr] 355 |         let mut resultMatrix = "".to_string();
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: convert the identifier to snake case: `result_matrix`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `stringSpace` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:356:17
[INFO] [stderr]     |
[INFO] [stderr] 356 |         let mut stringSpace = " ";
[INFO] [stderr]     |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `string_space`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `stringNewline` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:357:17
[INFO] [stderr]     |
[INFO] [stderr] 357 |         let mut stringNewline = "\n";
[INFO] [stderr]     |                 ^^^^^^^^^^^^^ help: convert the identifier to snake case: `string_newline`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `columnIndex` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:358:17
[INFO] [stderr]     |
[INFO] [stderr] 358 |         let mut columnIndex = 0;
[INFO] [stderr]     |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `column_index`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `stringElement` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:372:25
[INFO] [stderr]     |
[INFO] [stderr] 372 |                 let mut stringElement : String = self.data[k].to_string();
[INFO] [stderr]     |                         ^^^^^^^^^^^^^ help: convert the identifier to snake case: `string_element`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `stringElement` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:380:25
[INFO] [stderr]     |
[INFO] [stderr] 380 |                 let mut stringElement : String = self.data[k].to_string();
[INFO] [stderr]     |                         ^^^^^^^^^^^^^ help: convert the identifier to snake case: `string_element`
[INFO] [stderr] 
[INFO] [stderr] warning: 24 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "5a6b4b38120daa03a85a5199f32e81b89e395e12b393b2cee62719c711a486e3"`
[INFO] running `"docker" "rm" "-f" "5a6b4b38120daa03a85a5199f32e81b89e395e12b393b2cee62719c711a486e3"`
[INFO] [stdout] 5a6b4b38120daa03a85a5199f32e81b89e395e12b393b2cee62719c711a486e3