[INFO] cloning repository https://github.com/dabch/rust-rpi-led
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dabch/rust-rpi-led" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdabch%2Frust-rpi-led", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdabch%2Frust-rpi-led'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9eac6fdff231c2f1819db0a78850cd47ab1777b8
[INFO] testing dabch/rust-rpi-led against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdabch%2Frust-rpi-led" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dabch/rust-rpi-led on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dabch/rust-rpi-led
[INFO] finished tweaking git repo https://github.com/dabch/rust-rpi-led
[INFO] tweaked toml for git repo https://github.com/dabch/rust-rpi-led written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90fe66cd84a905dcadab1d17208da7bbc64ebeaa71bf1aebf75f85995b5d386f
[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" "90fe66cd84a905dcadab1d17208da7bbc64ebeaa71bf1aebf75f85995b5d386f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90fe66cd84a905dcadab1d17208da7bbc64ebeaa71bf1aebf75f85995b5d386f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90fe66cd84a905dcadab1d17208da7bbc64ebeaa71bf1aebf75f85995b5d386f", kill_on_drop: false }`
[INFO] [stdout] 90fe66cd84a905dcadab1d17208da7bbc64ebeaa71bf1aebf75f85995b5d386f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6530924c99f61a72a717a300ef4926ab78d524d8d472ea14438d31888885d204
[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" "6530924c99f61a72a717a300ef4926ab78d524d8d472ea14438d31888885d204", kill_on_drop: false }`
[INFO] [stderr]    Compiling weezl v0.1.5
[INFO] [stderr]    Compiling bytemuck v1.7.2
[INFO] [stderr]    Compiling rust_rpi_led_matrix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling gif v0.11.2
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling tiff v0.6.1
[INFO] [stderr]    Compiling image v0.23.14
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.03s
[INFO] running `Command { std: "docker" "inspect" "6530924c99f61a72a717a300ef4926ab78d524d8d472ea14438d31888885d204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6530924c99f61a72a717a300ef4926ab78d524d8d472ea14438d31888885d204", kill_on_drop: false }`
[INFO] [stdout] 6530924c99f61a72a717a300ef4926ab78d524d8d472ea14438d31888885d204
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8155d9544907db7def9e16b0ec3be37db6ca0ae19c625b0a867094402542c94
[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" "d8155d9544907db7def9e16b0ec3be37db6ca0ae19c625b0a867094402542c94", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_rpi_led_matrix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:252:19
[INFO] [stdout]     |
[INFO] [stdout] 252 |         unsafe { &(*(::std::ptr::null::<__fsid_t>())).__val as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deref_nullptr)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:336:19
[INFO] [stdout]     |
[INFO] [stdout] 336 |         unsafe { &(*(::std::ptr::null::<__mbstate_t__bindgen_ty_1>())).__wch as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:347:14
[INFO] [stdout]     |
[INFO] [stdout] 347 |             &(*(::std::ptr::null::<__mbstate_t__bindgen_ty_1>())).__wchb as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:371:19
[INFO] [stdout]     |
[INFO] [stdout] 371 |         unsafe { &(*(::std::ptr::null::<__mbstate_t>())).__count as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:381:19
[INFO] [stdout]     |
[INFO] [stdout] 381 |         unsafe { &(*(::std::ptr::null::<__mbstate_t>())).__value as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:410:19
[INFO] [stdout]     |
[INFO] [stdout] 410 |         unsafe { &(*(::std::ptr::null::<_G_fpos_t>())).__pos as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:420:19
[INFO] [stdout]     |
[INFO] [stdout] 420 |         unsafe { &(*(::std::ptr::null::<_G_fpos_t>())).__state as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:450:19
[INFO] [stdout]     |
[INFO] [stdout] 450 |         unsafe { &(*(::std::ptr::null::<_G_fpos64_t>())).__pos as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:460:19
[INFO] [stdout]     |
[INFO] [stdout] 460 |         unsafe { &(*(::std::ptr::null::<_G_fpos64_t>())).__state as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:535:19
[INFO] [stdout]     |
[INFO] [stdout] 535 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._flags as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:545:19
[INFO] [stdout]     |
[INFO] [stdout] 545 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_read_ptr as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:555:19
[INFO] [stdout]     |
[INFO] [stdout] 555 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_read_end as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:565:19
[INFO] [stdout]     |
[INFO] [stdout] 565 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_read_base as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:575:19
[INFO] [stdout]     |
[INFO] [stdout] 575 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_write_base as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:585:19
[INFO] [stdout]     |
[INFO] [stdout] 585 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_write_ptr as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:595:19
[INFO] [stdout]     |
[INFO] [stdout] 595 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_write_end as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:605:19
[INFO] [stdout]     |
[INFO] [stdout] 605 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_buf_base as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:615:19
[INFO] [stdout]     |
[INFO] [stdout] 615 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_buf_end as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:625:19
[INFO] [stdout]     |
[INFO] [stdout] 625 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_save_base as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:635:19
[INFO] [stdout]     |
[INFO] [stdout] 635 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_backup_base as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:645:19
[INFO] [stdout]     |
[INFO] [stdout] 645 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._IO_save_end as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:655:19
[INFO] [stdout]     |
[INFO] [stdout] 655 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._markers as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:665:19
[INFO] [stdout]     |
[INFO] [stdout] 665 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._chain as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:675:19
[INFO] [stdout]     |
[INFO] [stdout] 675 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._fileno as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:685:19
[INFO] [stdout]     |
[INFO] [stdout] 685 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._flags2 as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:695:19
[INFO] [stdout]     |
[INFO] [stdout] 695 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._old_offset as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:705:19
[INFO] [stdout]     |
[INFO] [stdout] 705 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._cur_column as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:715:19
[INFO] [stdout]     |
[INFO] [stdout] 715 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._vtable_offset as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:725:19
[INFO] [stdout]     |
[INFO] [stdout] 725 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._shortbuf as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:735:19
[INFO] [stdout]     |
[INFO] [stdout] 735 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._lock as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:745:19
[INFO] [stdout]     |
[INFO] [stdout] 745 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._offset as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:755:19
[INFO] [stdout]     |
[INFO] [stdout] 755 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._codecvt as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:765:19
[INFO] [stdout]     |
[INFO] [stdout] 765 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._wide_data as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:775:19
[INFO] [stdout]     |
[INFO] [stdout] 775 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._freeres_list as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:785:19
[INFO] [stdout]     |
[INFO] [stdout] 785 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._freeres_buf as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:795:19
[INFO] [stdout]     |
[INFO] [stdout] 795 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>())).__pad5 as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:805:19
[INFO] [stdout]     |
[INFO] [stdout] 805 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._mode as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/led_matrix_c.rs:815:19
[INFO] [stdout]     |
[INFO] [stdout] 815 |         unsafe { &(*(::std::ptr::null::<_IO_FILE>()))._unused2 as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1329:14
[INFO] [stdout]      |
[INFO] [stdout] 1329 |             &(*(::std::ptr::null::<LedMatrixOptions>())).hardware_mapping as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1340:19
[INFO] [stdout]      |
[INFO] [stdout] 1340 |         unsafe { &(*(::std::ptr::null::<LedMatrixOptions>())).rows as *const _ as usize },
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1350:19
[INFO] [stdout]      |
[INFO] [stdout] 1350 |         unsafe { &(*(::std::ptr::null::<LedMatrixOptions>())).cols as *const _ as usize },
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1361:14
[INFO] [stdout]      |
[INFO] [stdout] 1361 |             &(*(::std::ptr::null::<LedMatrixOptions>())).chain_length as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1372:19
[INFO] [stdout]      |
[INFO] [stdout] 1372 |         unsafe { &(*(::std::ptr::null::<LedMatrixOptions>())).parallel as *const _ as usize },
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1382:19
[INFO] [stdout]      |
[INFO] [stdout] 1382 |         unsafe { &(*(::std::ptr::null::<LedMatrixOptions>())).pwm_bits as *const _ as usize },
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1393:14
[INFO] [stdout]      |
[INFO] [stdout] 1393 |             &(*(::std::ptr::null::<LedMatrixOptions>())).pwm_lsb_nanoseconds as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1405:14
[INFO] [stdout]      |
[INFO] [stdout] 1405 |             &(*(::std::ptr::null::<LedMatrixOptions>())).pwm_dither_bits as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1416:19
[INFO] [stdout]      |
[INFO] [stdout] 1416 |         unsafe { &(*(::std::ptr::null::<LedMatrixOptions>())).brightness as *const _ as usize },
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1426:19
[INFO] [stdout]      |
[INFO] [stdout] 1426 |         unsafe { &(*(::std::ptr::null::<LedMatrixOptions>())).scan_mode as *const _ as usize },
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1437:14
[INFO] [stdout]      |
[INFO] [stdout] 1437 |             &(*(::std::ptr::null::<LedMatrixOptions>())).row_address_type as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1449:14
[INFO] [stdout]      |
[INFO] [stdout] 1449 |             &(*(::std::ptr::null::<LedMatrixOptions>())).multiplexing as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1461:14
[INFO] [stdout]      |
[INFO] [stdout] 1461 |             &(*(::std::ptr::null::<LedMatrixOptions>())).led_rgb_sequence as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1473:14
[INFO] [stdout]      |
[INFO] [stdout] 1473 |             &(*(::std::ptr::null::<LedMatrixOptions>())).pixel_mapper_config as *const _ as usize
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1484:19
[INFO] [stdout]      |
[INFO] [stdout] 1484 |         unsafe { &(*(::std::ptr::null::<LedMatrixOptions>())).panel_type as *const _ as usize },
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]     --> src/led_matrix_c.rs:1771:19
[INFO] [stdout]      |
[INFO] [stdout] 1771 |         unsafe { &(*(::std::ptr::null::<__va_list>())).__ap as *const _ as usize },
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.rust_rpi_led_matrix.b2b5d067-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062.1gn4x5rwnkkla0i5.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lrgbmatrix" "-lstdc++" "-lrt" "-lpthread" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libtest-6e9019ff2cdb2237.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgetopts-e9cc0b5f091b140c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunicode_width-762dfa4479f14aad.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_std-2a5ac1cc0b21909c.rlib" "/opt/rustwide/target/debug/deps/libimage-2f3765717f022d44.rlib" "/opt/rustwide/target/debug/deps/libbytemuck-8d684ee5bf3bedb9.rlib" "/opt/rustwide/target/debug/deps/libpng-4408d90740b039d4.rlib" "/opt/rustwide/target/debug/deps/libminiz_oxide-8e0358dc8c471770.rlib" "/opt/rustwide/target/debug/deps/libcrc32fast-00d36f27f9923da1.rlib" "/opt/rustwide/target/debug/deps/libdeflate-a8291029133bcb6f.rlib" "/opt/rustwide/target/debug/deps/libadler32-ae9ad600a9b2e446.rlib" "/opt/rustwide/target/debug/deps/libbitflags-e09638bf9aca31b4.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-f751b40816cabaac.rlib" "/opt/rustwide/target/debug/deps/libscoped_threadpool-4c8c7e21127df339.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-f4ffccee31dd849d.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-45a83f1a341abc63.rlib" "/opt/rustwide/target/debug/deps/libgif-6c362bdc49ed488a.rlib" "/opt/rustwide/target/debug/deps/libcolor_quant-22c6d0fe4a52d605.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-f30fa083324a1476.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-a7dd8f4b743ea2a4.rlib" "/opt/rustwide/target/debug/deps/libtiff-169181d03ebfd8a6.rlib" "/opt/rustwide/target/debug/deps/libweezl-d57fdc77eb47b604.rlib" "/opt/rustwide/target/debug/deps/libminiz_oxide-c68c5f57fc86bee6.rlib" "/opt/rustwide/target/debug/deps/libadler-7d22ef6d37ef0175.rlib" "/opt/rustwide/target/debug/deps/libjpeg_decoder-e53f61e667189724.rlib" "/opt/rustwide/target/debug/deps/librayon-6e60e86c1ae888e0.rlib" "/opt/rustwide/target/debug/deps/librayon_core-b511b8173b20f493.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-c71919f527130ee7.rlib" "/opt/rustwide/target/debug/deps/liblibc-bd0a7f2f55865ae0.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_deque-f2b23af11cc4f04c.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_epoch-360f83b335670031.rlib" "/opt/rustwide/target/debug/deps/libmemoffset-3e61ca8e83be7f2b.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-77ffbe2fe379a2bf.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_channel-91f991540701651d.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-3e099b1fb8f128e1.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-e92083d5a39a8b50.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-0d27f345b2a6a3cd.rlib" "/opt/rustwide/target/debug/deps/libeither-867d2789c96c5e02.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-197d933f09d9a590.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-46a006cddfd334f0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-5b9870310e470b38.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-260022ba8f1ab4ee.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-71377435a799394f.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-658ee5924fde57cd.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-9e8627da6bd1b94a.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-19fdaac49f59be84.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-cb00e2691ea45905.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-50f6726defae5ae1.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-2afc16311deea26e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-bb5cb0fe086ee8cf.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-896053247b5dfd0b.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-735e1f2ac3cf23be.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-9dfb6622644c732c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-beea7d9617fe25c5.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-8ef7dd43fc671f88.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-a9a3b2ad67977f47.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-08-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/rust_rpi_led_matrix-2e556d672c872062" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lrgbmatrix
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_rpi_led_matrix` due to 2 previous errors; 54 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d8155d9544907db7def9e16b0ec3be37db6ca0ae19c625b0a867094402542c94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8155d9544907db7def9e16b0ec3be37db6ca0ae19c625b0a867094402542c94", kill_on_drop: false }`
[INFO] [stdout] d8155d9544907db7def9e16b0ec3be37db6ca0ae19c625b0a867094402542c94
