[INFO] cloning repository https://github.com/phip1611/max-7219-led-matrix-util
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/phip1611/max-7219-led-matrix-util" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphip1611%2Fmax-7219-led-matrix-util", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphip1611%2Fmax-7219-led-matrix-util'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40b2bf2ef84904b51482434ec244617dc8fd4581
[INFO] testing phip1611/max-7219-led-matrix-util against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphip1611%2Fmax-7219-led-matrix-util" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/phip1611/max-7219-led-matrix-util 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/phip1611/max-7219-led-matrix-util
[INFO] finished tweaking git repo https://github.com/phip1611/max-7219-led-matrix-util
[INFO] tweaked toml for git repo https://github.com/phip1611/max-7219-led-matrix-util written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/phip1611/max-7219-led-matrix-util 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 79fe461e7df142d7c034e2b92bb1bdf583240007b190ebf34e7331c511dad17c
[INFO] running `Command { std: "docker" "start" "-a" "79fe461e7df142d7c034e2b92bb1bdf583240007b190ebf34e7331c511dad17c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79fe461e7df142d7c034e2b92bb1bdf583240007b190ebf34e7331c511dad17c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79fe461e7df142d7c034e2b92bb1bdf583240007b190ebf34e7331c511dad17c", kill_on_drop: false }`
[INFO] [stdout] 79fe461e7df142d7c034e2b92bb1bdf583240007b190ebf34e7331c511dad17c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8f7bb1bef0e166ca742142aab5f222acfd330ea94b426abd4f32fdf987e1bc61
[INFO] running `Command { std: "docker" "start" "-a" "8f7bb1bef0e166ca742142aab5f222acfd330ea94b426abd4f32fdf987e1bc61", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling nb v0.1.2
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stderr]    Compiling max7219 v0.2.2
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling gpio-cdev v0.3.0
[INFO] [stderr]    Compiling max-7219-led-matrix-util v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `remove_letter_spacing`
[INFO] [stdout]   --> src/lib.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn remove_letter_spacing(_moving_bits: &mut Vec<SingleDisplayData>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.05s
[INFO] running `Command { std: "docker" "inspect" "8f7bb1bef0e166ca742142aab5f222acfd330ea94b426abd4f32fdf987e1bc61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f7bb1bef0e166ca742142aab5f222acfd330ea94b426abd4f32fdf987e1bc61", kill_on_drop: false }`
[INFO] [stdout] 8f7bb1bef0e166ca742142aab5f222acfd330ea94b426abd4f32fdf987e1bc61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 1bb0387c0b3ec863b9c2f0bde19aa6012e1ff5617b88adcf4ee5c3f115850373
[INFO] running `Command { std: "docker" "start" "-a" "1bb0387c0b3ec863b9c2f0bde19aa6012e1ff5617b88adcf4ee5c3f115850373", kill_on_drop: false }`
[INFO] [stderr]    Compiling max-7219-led-matrix-util v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `remove_letter_spacing`
[INFO] [stdout]   --> src/lib.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn remove_letter_spacing(_moving_bits: &mut Vec<SingleDisplayData>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_letter_spacing`
[INFO] [stdout]   --> src/lib.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn remove_letter_spacing(_moving_bits: &mut Vec<SingleDisplayData>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 1.19s
[INFO] running `Command { std: "docker" "inspect" "1bb0387c0b3ec863b9c2f0bde19aa6012e1ff5617b88adcf4ee5c3f115850373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bb0387c0b3ec863b9c2f0bde19aa6012e1ff5617b88adcf4ee5c3f115850373", kill_on_drop: false }`
[INFO] [stdout] 1bb0387c0b3ec863b9c2f0bde19aa6012e1ff5617b88adcf4ee5c3f115850373
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 82e3d61ef6f84fc90a9ec1c42753667fda33d4acd833bbd2a1d436441855356e
[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" "82e3d61ef6f84fc90a9ec1c42753667fda33d4acd833bbd2a1d436441855356e", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `remove_letter_spacing`
[INFO] [stderr]   --> src/lib.rs:96:4
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn remove_letter_spacing(_moving_bits: &mut Vec<SingleDisplayData>) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `remove_letter_spacing`
[INFO] [stderr]   --> src/lib.rs:96:4
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn remove_letter_spacing(_moving_bits: &mut Vec<SingleDisplayData>) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/max_7219_led_matrix_util-db96d8ac871b9dfb
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/demo-b61f29251904d493
[INFO] [stdout] test tests::test_move_all_bits_one_col_left ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests max-7219-led-matrix-util
[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
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "82e3d61ef6f84fc90a9ec1c42753667fda33d4acd833bbd2a1d436441855356e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82e3d61ef6f84fc90a9ec1c42753667fda33d4acd833bbd2a1d436441855356e", kill_on_drop: false }`
[INFO] [stdout] 82e3d61ef6f84fc90a9ec1c42753667fda33d4acd833bbd2a1d436441855356e