[INFO] cloning repository https://github.com/elielmathe/matrix_ops_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elielmathe/matrix_ops_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felielmathe%2Fmatrix_ops_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felielmathe%2Fmatrix_ops_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cb1cf788a49f3ab0990faae8361ddc0affee86fe
[INFO] checking elielmathe/matrix_ops_rust against try#bf5ff6675cf10ce009ac02007b064a7cfc4509ac for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felielmathe%2Fmatrix_ops_rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elielmathe/matrix_ops_rust on toolchain bf5ff6675cf10ce009ac02007b064a7cfc4509ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/elielmathe/matrix_ops_rust
[INFO] finished tweaking git repo https://github.com/elielmathe/matrix_ops_rust
[INFO] tweaked toml for git repo https://github.com/elielmathe/matrix_ops_rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/elielmathe/matrix_ops_rust 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" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking elielmathe/matrix_ops_rust against try#bf5ff6675cf10ce009ac02007b064a7cfc4509ac for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felielmathe%2Fmatrix_ops_rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elielmathe/matrix_ops_rust on toolchain bf5ff6675cf10ce009ac02007b064a7cfc4509ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/elielmathe/matrix_ops_rust
[INFO] finished tweaking git repo https://github.com/elielmathe/matrix_ops_rust
[INFO] tweaked toml for git repo https://github.com/elielmathe/matrix_ops_rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/elielmathe/matrix_ops_rust 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" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a4e563b1541b45a745f88e426a0536fdf084d71737559732f479f4d8464194b
[INFO] running `Command { std: "docker" "start" "-a" "0a4e563b1541b45a745f88e426a0536fdf084d71737559732f479f4d8464194b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a4e563b1541b45a745f88e426a0536fdf084d71737559732f479f4d8464194b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a4e563b1541b45a745f88e426a0536fdf084d71737559732f479f4d8464194b", kill_on_drop: false }`
[INFO] [stdout] 0a4e563b1541b45a745f88e426a0536fdf084d71737559732f479f4d8464194b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7255df7e990aa79ea20bc08966e8ae640eceb6b196dda94092da55f4fe2c1154
[INFO] running `Command { std: "docker" "start" "-a" "7255df7e990aa79ea20bc08966e8ae640eceb6b196dda94092da55f4fe2c1154", kill_on_drop: false }`
[INFO] [stderr]     Checking matrix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut c:[i32;5] = [0;5];
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/main.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut x:usize = 0;
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut c:[i32;5] = [0;5];
[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/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut x:usize = 0;
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let x:usize = a.len();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         for i in a.iter(){
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/main.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut y : usize = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `z` is never read
[INFO] [stdout]   --> src/main.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut z : usize = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/main.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |             for k in i.iter(){
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/main.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 for j in b[x].iter(){
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/main.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let mut y : usize = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `z` is never read
[INFO] [stdout]   --> src/main.rs:92:17
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let mut z : usize = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/main.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |             for k in i.iter(){
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                 for j in b[x].iter(){
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `addition` is never used
[INFO] [stdout]    --> src/main.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn addition(a : i32,b : i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]  --> src/main.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut c:[i32;5] = [0;5];
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/main.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut x:usize = 0;
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut c:[i32;5] = [0;5];
[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/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut x:usize = 0;
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let x:usize = a.len();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         for i in a.iter(){
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/main.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let mut y : usize = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `z` is never read
[INFO] [stdout]   --> src/main.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut z : usize = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/main.rs:69:17
[INFO] [stdout]    |
[INFO] [stdout] 69 |             for k in i.iter(){
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/main.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 for j in b[x].iter(){
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/main.rs:91:17
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let mut y : usize = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `z` is never read
[INFO] [stdout]   --> src/main.rs:92:17
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let mut z : usize = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/main.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |             for k in i.iter(){
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/main.rs:98:21
[INFO] [stdout]    |
[INFO] [stdout] 98 |                 for j in b[x].iter(){
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `testList` should have a snake case name
[INFO] [stdout]    --> src/main.rs:126:13
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let testList = [[[1,1],[2,2],[3,3]],[[2,2],[3,4],[5,6]],[[-2,-100],[98,90],[96,-10]]];
[INFO] [stdout]     |             ^^^^^^^^ help: convert the identifier to snake case: `test_list`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "7255df7e990aa79ea20bc08966e8ae640eceb6b196dda94092da55f4fe2c1154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7255df7e990aa79ea20bc08966e8ae640eceb6b196dda94092da55f4fe2c1154", kill_on_drop: false }`
[INFO] [stdout] 7255df7e990aa79ea20bc08966e8ae640eceb6b196dda94092da55f4fe2c1154
