[INFO] cloning repository https://github.com/MattsPoche/Matrix-transformation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MattsPoche/Matrix-transformation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattsPoche%2FMatrix-transformation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattsPoche%2FMatrix-transformation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3643ab1e3986ac405588e77203f451f9bf186b11
[INFO] testing MattsPoche/Matrix-transformation against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattsPoche%2FMatrix-transformation" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MattsPoche/Matrix-transformation on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MattsPoche/Matrix-transformation
[INFO] finished tweaking git repo https://github.com/MattsPoche/Matrix-transformation
[INFO] tweaked toml for git repo https://github.com/MattsPoche/Matrix-transformation written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/MattsPoche/Matrix-transformation already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86fe605600ce609f30ab01d667396e48904c073628a5e1e5b77a0ed4bf3219a0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "86fe605600ce609f30ab01d667396e48904c073628a5e1e5b77a0ed4bf3219a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86fe605600ce609f30ab01d667396e48904c073628a5e1e5b77a0ed4bf3219a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86fe605600ce609f30ab01d667396e48904c073628a5e1e5b77a0ed4bf3219a0", kill_on_drop: false }`
[INFO] [stdout] 86fe605600ce609f30ab01d667396e48904c073628a5e1e5b77a0ed4bf3219a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e18a8f8f51898216e1f87d93d12ff92fbcfb739e79e086e9712ece9a5c21cc46
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e18a8f8f51898216e1f87d93d12ff92fbcfb739e79e086e9712ece9a5c21cc46", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix_transformation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `y_ubound`
[INFO] [stdout]  --> src/main.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let (x_ubound, y_ubound) = get_bounds(v);
[INFO] [stdout]   |                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_ubound`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `matricize`
[INFO] [stdout]   --> src/main.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn matricize(v: &Vec<(usize, usize)>) -> Vec<Vec<u16>> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_matrix`
[INFO] [stdout]   --> src/main.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn print_matrix(m: &Vec<Vec<u16>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "e18a8f8f51898216e1f87d93d12ff92fbcfb739e79e086e9712ece9a5c21cc46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e18a8f8f51898216e1f87d93d12ff92fbcfb739e79e086e9712ece9a5c21cc46", kill_on_drop: false }`
[INFO] [stdout] e18a8f8f51898216e1f87d93d12ff92fbcfb739e79e086e9712ece9a5c21cc46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1a7e4a13cfc11181db5c201c60896dae218e25366dbd6beec32a90b42e77f55d
[INFO] running `Command { std: "docker" "start" "-a" "1a7e4a13cfc11181db5c201c60896dae218e25366dbd6beec32a90b42e77f55d", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix_transformation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `y_ubound`
[INFO] [stdout]  --> src/main.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let (x_ubound, y_ubound) = get_bounds(v);
[INFO] [stdout]   |                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_ubound`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "1a7e4a13cfc11181db5c201c60896dae218e25366dbd6beec32a90b42e77f55d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a7e4a13cfc11181db5c201c60896dae218e25366dbd6beec32a90b42e77f55d", kill_on_drop: false }`
[INFO] [stdout] 1a7e4a13cfc11181db5c201c60896dae218e25366dbd6beec32a90b42e77f55d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 33632c2f94437d75784e289d9feadd37e41aee92ccc66a8ade23e3222acc2544
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "33632c2f94437d75784e289d9feadd37e41aee92ccc66a8ade23e3222acc2544", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `y_ubound`
[INFO] [stderr]  --> src/main.rs:3:20
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let (x_ubound, y_ubound) = get_bounds(v);
[INFO] [stderr]   |                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_ubound`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/matrix_transformation-d42481cc1aef8d1d
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_ubounds ... ok
[INFO] [stdout] test test_matricize ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "33632c2f94437d75784e289d9feadd37e41aee92ccc66a8ade23e3222acc2544", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33632c2f94437d75784e289d9feadd37e41aee92ccc66a8ade23e3222acc2544", kill_on_drop: false }`
[INFO] [stdout] 33632c2f94437d75784e289d9feadd37e41aee92ccc66a8ade23e3222acc2544