[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 beta-2021-01-01 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-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MattsPoche/Matrix-transformation on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "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-7/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" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5546b510e580a56bb5b44856b5fdf82b0f12d7a409f9ee95856cd76bb9dfa8a
[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" "b5546b510e580a56bb5b44856b5fdf82b0f12d7a409f9ee95856cd76bb9dfa8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5546b510e580a56bb5b44856b5fdf82b0f12d7a409f9ee95856cd76bb9dfa8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5546b510e580a56bb5b44856b5fdf82b0f12d7a409f9ee95856cd76bb9dfa8a", kill_on_drop: false }`
[INFO] [stdout] b5546b510e580a56bb5b44856b5fdf82b0f12d7a409f9ee95856cd76bb9dfa8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d34dab971a6e32602d2e76c5531128300db214051539fc09d8ca5ae37b49453d
[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" "d34dab971a6e32602d2e76c5531128300db214051539fc09d8ca5ae37b49453d", 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 1.00s
[INFO] running `Command { std: "docker" "inspect" "d34dab971a6e32602d2e76c5531128300db214051539fc09d8ca5ae37b49453d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d34dab971a6e32602d2e76c5531128300db214051539fc09d8ca5ae37b49453d", kill_on_drop: false }`
[INFO] [stdout] d34dab971a6e32602d2e76c5531128300db214051539fc09d8ca5ae37b49453d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d322492eeda8df4ca02f4e1f7bed252f4af5d24e43728125c686d4b783ba0b85
[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" "d322492eeda8df4ca02f4e1f7bed252f4af5d24e43728125c686d4b783ba0b85", 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 1.00s
[INFO] running `Command { std: "docker" "inspect" "d322492eeda8df4ca02f4e1f7bed252f4af5d24e43728125c686d4b783ba0b85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d322492eeda8df4ca02f4e1f7bed252f4af5d24e43728125c686d4b783ba0b85", kill_on_drop: false }`
[INFO] [stdout] d322492eeda8df4ca02f4e1f7bed252f4af5d24e43728125c686d4b783ba0b85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 04fa2febd6427f6d3c3aa00562c954ea3e7f84c4153a89db82e6b1e1590acd67
[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" "04fa2febd6427f6d3c3aa00562c954ea3e7f84c4153a89db82e6b1e1590acd67", 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 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/matrix_transformation-51632b8ed0891ddc
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "04fa2febd6427f6d3c3aa00562c954ea3e7f84c4153a89db82e6b1e1590acd67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04fa2febd6427f6d3c3aa00562c954ea3e7f84c4153a89db82e6b1e1590acd67", kill_on_drop: false }`
[INFO] [stdout] 04fa2febd6427f6d3c3aa00562c954ea3e7f84c4153a89db82e6b1e1590acd67