[INFO] cloning repository https://github.com/testxxxxxxxxx/matrix-calculator-app
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/testxxxxxxxxx/matrix-calculator-app" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftestxxxxxxxxx%2Fmatrix-calculator-app", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftestxxxxxxxxx%2Fmatrix-calculator-app'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 030e4b4cfb9442ac4951ea84dbe94323d399da3d
[INFO] testing testxxxxxxxxx/matrix-calculator-app against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftestxxxxxxxxx%2Fmatrix-calculator-app" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/testxxxxxxxxx/matrix-calculator-app
[INFO] finished tweaking git repo https://github.com/testxxxxxxxxx/matrix-calculator-app
[INFO] tweaked toml for git repo https://github.com/testxxxxxxxxx/matrix-calculator-app written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/testxxxxxxxxx/matrix-calculator-app on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/testxxxxxxxxx/matrix-calculator-app 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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fade1aef73564d175b8cce09477d3074e9f50d96c4fd033ecf33f77b3e43da2a
[INFO] running `Command { std: "docker" "start" "-a" "fade1aef73564d175b8cce09477d3074e9f50d96c4fd033ecf33f77b3e43da2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fade1aef73564d175b8cce09477d3074e9f50d96c4fd033ecf33f77b3e43da2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fade1aef73564d175b8cce09477d3074e9f50d96c4fd033ecf33f77b3e43da2a", kill_on_drop: false }`
[INFO] [stdout] fade1aef73564d175b8cce09477d3074e9f50d96c4fd033ecf33f77b3e43da2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a859266480bd0afb834eaba273371210c17804a9c263450160b6e55f97aef8ab
[INFO] running `Command { std: "docker" "start" "-a" "a859266480bd0afb834eaba273371210c17804a9c263450160b6e55f97aef8ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix_calculator_project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matrix_operations.rs:278:13
[INFO] [stdout]     |
[INFO] [stdout] 278 |         let mut result: u32;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut matrix_a: Matrix = Matrix{ rows: 5, col: 5, matrix: Vec::new() };
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut value: u32;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix_a`
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut matrix_a: Matrix = Matrix{ rows: 5, col: 5, matrix: Vec::new() };
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `fill_unit` are never used
[INFO] [stdout]   --> src/matrix.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait MatrixMethods {
[INFO] [stdout]    |           ------------- associated items in this trait
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     fn new(rows: u32, col: u32) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn fill_unit(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MatrixOperations` is never constructed
[INFO] [stdout]  --> src/matrix_operations.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct MatrixOperations {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MatrixOperationsMethods` is never used
[INFO] [stdout]   --> src/matrix_operations.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait MatrixOperationsMethods {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "a859266480bd0afb834eaba273371210c17804a9c263450160b6e55f97aef8ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a859266480bd0afb834eaba273371210c17804a9c263450160b6e55f97aef8ab", kill_on_drop: false }`
[INFO] [stdout] a859266480bd0afb834eaba273371210c17804a9c263450160b6e55f97aef8ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1859404eef6b4737228be1f96aa6aa0cd8e45885211a6c2b742d10230908a865
[INFO] running `Command { std: "docker" "start" "-a" "1859404eef6b4737228be1f96aa6aa0cd8e45885211a6c2b742d10230908a865", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix_calculator_project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matrix_operations.rs:278:13
[INFO] [stdout]     |
[INFO] [stdout] 278 |         let mut result: u32;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut matrix_a: Matrix = Matrix{ rows: 5, col: 5, matrix: Vec::new() };
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut value: u32;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matrix_a`
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut matrix_a: Matrix = Matrix{ rows: 5, col: 5, matrix: Vec::new() };
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `fill_unit` are never used
[INFO] [stdout]   --> src/matrix.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait MatrixMethods {
[INFO] [stdout]    |           ------------- associated items in this trait
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     fn new(rows: u32, col: u32) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn fill_unit(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MatrixOperations` is never constructed
[INFO] [stdout]  --> src/matrix_operations.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct MatrixOperations {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MatrixOperationsMethods` is never used
[INFO] [stdout]   --> src/matrix_operations.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | trait MatrixOperationsMethods {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "1859404eef6b4737228be1f96aa6aa0cd8e45885211a6c2b742d10230908a865", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1859404eef6b4737228be1f96aa6aa0cd8e45885211a6c2b742d10230908a865", kill_on_drop: false }`
[INFO] [stdout] 1859404eef6b4737228be1f96aa6aa0cd8e45885211a6c2b742d10230908a865
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 60d34832096dc5402b17086f19ae3783873cb358405e287f8133e0fda8e61844
[INFO] running `Command { std: "docker" "start" "-a" "60d34832096dc5402b17086f19ae3783873cb358405e287f8133e0fda8e61844", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/matrix_operations.rs:278:13
[INFO] [stderr]     |
[INFO] [stderr] 278 |         let mut result: u32;
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut matrix_a: Matrix = Matrix{ rows: 5, col: 5, matrix: Vec::new() };
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut value: u32;
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matrix_a`
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut matrix_a: Matrix = Matrix{ rows: 5, col: 5, matrix: Vec::new() };
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matrix_a`
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `fill_unit` are never used
[INFO] [stderr]   --> src/matrix.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub trait MatrixMethods {
[INFO] [stderr]    |           ------------- associated items in this trait
[INFO] [stderr] 12 |
[INFO] [stderr] 13 |     fn new(rows: u32, col: u32) -> Self;
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 17 |     fn fill_unit(&mut self);
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MatrixOperations` is never constructed
[INFO] [stderr]  --> src/matrix_operations.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct MatrixOperations {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `MatrixOperationsMethods` is never used
[INFO] [stderr]   --> src/matrix_operations.rs:10:7
[INFO] [stderr]    |
[INFO] [stderr] 10 | trait MatrixOperationsMethods {
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `matrix_calculator_project` (bin "matrix_calculator_project" test) generated 7 warnings (run `cargo fix --bin "matrix_calculator_project" -p matrix_calculator_project --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/matrix_calculator_project-b60d9c8a1e18d7f4)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "60d34832096dc5402b17086f19ae3783873cb358405e287f8133e0fda8e61844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60d34832096dc5402b17086f19ae3783873cb358405e287f8133e0fda8e61844", kill_on_drop: false }`
[INFO] [stdout] 60d34832096dc5402b17086f19ae3783873cb358405e287f8133e0fda8e61844
