[INFO] crate ledcat 0.1.5 is already in cache
[INFO] extracting crate ledcat 0.1.5 into work/ex/beta-1.37-6/sources/1.36.0/reg/ledcat/0.1.5
[INFO] extracting crate ledcat 0.1.5 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ledcat/0.1.5
[INFO] validating manifest of ledcat-0.1.5 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ledcat-0.1.5 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ledcat-0.1.5
[INFO] finished frobbing ledcat-0.1.5
[INFO] frobbed toml for ledcat-0.1.5 written to work/ex/beta-1.37-6/sources/1.36.0/reg/ledcat/0.1.5/Cargo.toml
[INFO] started frobbing ledcat-0.1.5
[INFO] finished frobbing ledcat-0.1.5
[INFO] frobbed toml for ledcat-0.1.5 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ledcat/0.1.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ledcat-0.1.5 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ledcat/0.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 73d5e6a9f90cc92840d380c77c8b5da65c9ddd611e5b36a91732fd1cc3abda7d
[INFO] running `"docker" "start" "-a" "73d5e6a9f90cc92840d380c77c8b5da65c9ddd611e5b36a91732fd1cc3abda7d"`
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]    Compiling ledcat v0.1.5 (/opt/crater/workdir)
[INFO] [stderr]    Compiling gpio v0.3.0
[INFO] [stderr]    Compiling derive-error v0.0.4
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/device/apa102.rs:27:40
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn write_frame(&self, writer: &mut io::Write, pixels: &[Pixel]) -> io::Result<()> {
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/device/fluxled/mod.rs:244:20
[INFO] [stderr]     |
[INFO] [stderr] 244 |     type Err = Box<error::Error + Send + Sync>;
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/device/fluxled/mod.rs:253:43
[INFO] [stderr]     |
[INFO] [stderr] 253 |             .or_else(|_| -> Result<_, Box<error::Error + Send + Sync>> {
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/device/generic.rs:13:40
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn write_frame(&self, writer: &mut io::Write, pixels: &[Pixel]) -> io::Result<()> {
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/device/hexws2811.rs:13:40
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn write_frame(&self, writer: &mut io::Write, pixels: &[Pixel]) -> io::Result<()> {
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/device/lpd8806.rs:25:40
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn write_frame(&self, writer: &mut io::Write, pixels: &[Pixel]) -> io::Result<()> {
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/device/sk9822.rs:27:40
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn write_frame(&self, writer: &mut io::Write, pixels: &[Pixel]) -> io::Result<()> {
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/device/ws2812.rs:25:40
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn write_frame(&self, writer: &mut io::Write, pixels: &[Pixel]) -> io::Result<()> {
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/device/mod.rs:43:21
[INFO] [stderr]    |
[INFO] [stderr] 43 | impl Output for Box<Output> {
[INFO] [stderr]    |                     ^^^^^^ help: use `dyn`: `dyn Output`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/device/mod.rs:60:32
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn write_frame(&self, &mut io::Write, &[Pixel]) -> io::Result<()>;
[INFO] [stderr]    |                                ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/device/mod.rs:82:37
[INFO] [stderr]    |
[INFO] [stderr] 82 |     fn write_frame(&self, out: &mut io::Write, frame: &[Pixel]) -> io::Result<()> {
[INFO] [stderr]    |                                     ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/device/mod.rs:111:16
[INFO] [stderr]     |
[INFO] [stderr] 111 |     Device(Box<Device>),
[INFO] [stderr]     |                ^^^^^^ help: use `dyn`: `dyn Device`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/device/mod.rs:113:16
[INFO] [stderr]     |
[INFO] [stderr] 113 |     Output(Box<Output>),
[INFO] [stderr]     |                ^^^^^^ help: use `dyn`: `dyn Output`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/driver/artnet/unicast.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |     target: Box<Target>,
[INFO] [stderr]    |                 ^^^^^^ help: use `dyn`: `dyn Target`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/driver/artnet/unicast.rs:23:27
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn to(target: Box<Target>, frame_size: usize) -> io::Result<Unicast> {
[INFO] [stderr]    |                           ^^^^^^ help: use `dyn`: `dyn Target`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/driver/artnet/mod.rs:59:28
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let artnet_target: Box<Target> = if args.is_present("broadcast") {
[INFO] [stderr]    |                            ^^^^^^ help: use `dyn`: `dyn Target`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/driver/spidev.rs:28:38
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn open(path: &path::Path, dev: &Device) -> Result<fs::File, driver::Error> {
[INFO] [stderr]    |                                      ^^^^^^ help: use `dyn`: `dyn Device`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/input/geometry.rs:45:32
[INFO] [stderr]    |
[INFO] [stderr] 45 | impl Transposition for Vec<Box<Transposition>> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^ help: use `dyn`: `dyn Transposition`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/input/select.rs:25:21
[INFO] [stderr]    |
[INFO] [stderr] 25 |     inputs: Vec<Box<ReadFd + Send>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadFd + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/input/select.rs:39:39
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let files: io::Result<Vec<Box<ReadFd + Send>>> = filenames.into_iter().map(|filename| {
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadFd + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/input/select.rs:63:22
[INFO] [stderr]    |
[INFO] [stderr] 63 |             Ok(Box::<ReadFd + Send>::from(Box::new(file)))
[INFO] [stderr]    |                      ^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadFd + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/input/select.rs:68:33
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn from(inputs: Vec<Box<ReadFd + Send>>, switch_after: usize, when_eof: WhenEOF, clear_timeout: Option<time::Duration>) -> Reader {
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadFd + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:164:21
[INFO] [stderr]     |
[INFO] [stderr] 164 |     let output: Box<Output> = {
[INFO] [stderr]     |                     ^^^^^^ help: use `dyn`: `dyn Output`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:190:33
[INFO] [stderr]     |
[INFO] [stderr] 190 |                 let output: Box<io::Write + Send> = match driver_name.as_str() {
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Write + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:374:33
[INFO] [stderr]     |
[INFO] [stderr] 374 |     let transpositions: Vec<Box<Transposition>> = try!(operations.into_iter()
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^ help: use `dyn`: `dyn Transposition`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:375:35
[INFO] [stderr]     |
[INFO] [stderr] 375 |         .map(|name| -> Result<Box<Transposition>, String> {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn Transposition`
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.ledcat.48810c1s-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135" "/opt/crater/target/debug/deps/ledcat-025b8a5772380135.p4ccxcem6om4kc0.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/workdir/components/rpi-rgb-led-matrix/lib" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "-Wl,--whole-archive" "-lrgbmatrix" "-Wl,--no-whole-archive" "-Wl,-Bdynamic" "-lstdc++" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libregex-6683e124b2894695.rlib" "/opt/crater/target/debug/deps/libutf8_ranges-32fecc95d998aacd.rlib" "/opt/crater/target/debug/deps/libregex_syntax-df3af46a51d0ff63.rlib" "/opt/crater/target/debug/deps/libucd_util-3795c9684c4c7e7c.rlib" "/opt/crater/target/debug/deps/libthread_local-1060038c0757fbc7.rlib" "/opt/crater/target/debug/deps/liblazy_static-6a4e8ea56a445919.rlib" "/opt/crater/target/debug/deps/libaho_corasick-31ecba28bf310ad3.rlib" "/opt/crater/target/debug/deps/libmemchr-e9dad3b9b8c90a38.rlib" "/opt/crater/target/debug/deps/libnix-c477e30dc117f3e1.rlib" "/opt/crater/target/debug/deps/libvoid-7cea1bca190341e8.rlib" "/opt/crater/target/debug/deps/libbytes-7003aa2c6f61a99c.rlib" "/opt/crater/target/debug/deps/libiovec-fff840893baf65a3.rlib" "/opt/crater/target/debug/deps/libnet2-dc52c3a8ee685ffb.rlib" "/opt/crater/target/debug/deps/libcfg_if-17244d8fcea476bd.rlib" "/opt/crater/target/debug/deps/libgpio-402f00f5ac9f05b2.rlib" "/opt/crater/target/debug/deps/libclap-ea77014fab70104b.rlib" "/opt/crater/target/debug/deps/libvec_map-d15ddac8fbd5a1a7.rlib" "/opt/crater/target/debug/deps/libtextwrap-a7f85f046874f4da.rlib" "/opt/crater/target/debug/deps/libunicode_width-5c65625ac38072b6.rlib" "/opt/crater/target/debug/deps/libstrsim-b714068d90a275c7.rlib" "/opt/crater/target/debug/deps/libbitflags-1f73faaef27177be.rlib" "/opt/crater/target/debug/deps/libatty-03bfb70b48d44ab1.rlib" "/opt/crater/target/debug/deps/liblibc-15b143653abd1ffe.rlib" "/opt/crater/target/debug/deps/libansi_term-a8ee7a34610f25b5.rlib" "/opt/crater/target/debug/deps/libbyteorder-066131f17ea0c99b.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-a80a1e8e09cafef8.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e0e6351da805c468.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-e04f54bafc95e331.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-67901d3322495bd5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-bd390b1abaceaec1.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-312dd37fdc7bedfc.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-8ed0e51d58d644a3.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-8a423c320a6c707f.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d6a95598e2238263.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d231614b153016eb.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-3821619027f463e4.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-1cfd794d18771a44.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-dcf33cf10c2452ef.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-c258fea34bf64bce.rlib" "-Wl,-Bdynamic" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lrgbmatrix
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `ledcat`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "73d5e6a9f90cc92840d380c77c8b5da65c9ddd611e5b36a91732fd1cc3abda7d"`
[INFO] running `"docker" "rm" "-f" "73d5e6a9f90cc92840d380c77c8b5da65c9ddd611e5b36a91732fd1cc3abda7d"`
[INFO] [stdout] 73d5e6a9f90cc92840d380c77c8b5da65c9ddd611e5b36a91732fd1cc3abda7d