[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] checking testxxxxxxxxx/matrix-calculator-app against master#368e2fd458a22d0cc133d0c254f2612ee999744f for pr-128351 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftestxxxxxxxxx%2Fmatrix-calculator-app" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/testxxxxxxxxx/matrix-calculator-app on toolchain 368e2fd458a22d0cc133d0c254f2612ee999744f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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-7-tc1/source/Cargo.toml [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" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "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 [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking testxxxxxxxxx/matrix-calculator-app against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftestxxxxxxxxx%2Fmatrix-calculator-app" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/testxxxxxxxxx/matrix-calculator-app on toolchain 09146510cdb33d15474a35fde290187a88b1cf35 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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-7-tc2/source/Cargo.toml [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" "+09146510cdb33d15474a35fde290187a88b1cf35" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 25ab01f3d6ee3acf61ecc7459fee56794d169777d4304a78a88f189a18897e29 [INFO] running `Command { std: "docker" "start" "-a" "25ab01f3d6ee3acf61ecc7459fee56794d169777d4304a78a88f189a18897e29", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "25ab01f3d6ee3acf61ecc7459fee56794d169777d4304a78a88f189a18897e29", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "25ab01f3d6ee3acf61ecc7459fee56794d169777d4304a78a88f189a18897e29", kill_on_drop: false }` [INFO] [stdout] 25ab01f3d6ee3acf61ecc7459fee56794d169777d4304a78a88f189a18897e29 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 99de612e5d51c6115550c152cec0517ae658acb527e4a31073db91b56cfd4bb2 [INFO] running `Command { std: "docker" "start" "-a" "99de612e5d51c6115550c152cec0517ae658acb527e4a31073db91b56cfd4bb2", kill_on_drop: false }` [INFO] [stderr] Checking 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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> src/main.rs:11:13 [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)]` on by default [INFO] [stdout] [INFO] [stdout] [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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `matrix_a` [INFO] [stdout] --> src/main.rs:17:13 [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: 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:11:13 [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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `matrix_a` [INFO] [stdout] --> src/main.rs:17:13 [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)]` 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: 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: 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] [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)]` 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] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s [INFO] running `Command { std: "docker" "inspect" "99de612e5d51c6115550c152cec0517ae658acb527e4a31073db91b56cfd4bb2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "99de612e5d51c6115550c152cec0517ae658acb527e4a31073db91b56cfd4bb2", kill_on_drop: false }` [INFO] [stdout] 99de612e5d51c6115550c152cec0517ae658acb527e4a31073db91b56cfd4bb2