[INFO] updating cached repository mgsloan/treadcam
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mgsloan/treadcam
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mgsloan/treadcam" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/mgsloan/treadcam"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/mgsloan/treadcam'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mgsloan/treadcam" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mgsloan/treadcam"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mgsloan/treadcam'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a7394173dbc9e81874d897e2e382f0ea38784b20
[INFO] sha for GitHub repo mgsloan/treadcam: a7394173dbc9e81874d897e2e382f0ea38784b20
[INFO] validating manifest of mgsloan/treadcam on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mgsloan/treadcam on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mgsloan/treadcam
[INFO] finished frobbing mgsloan/treadcam
[INFO] frobbed toml for mgsloan/treadcam written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/mgsloan/treadcam/Cargo.toml
[INFO] started frobbing mgsloan/treadcam
[INFO] finished frobbing mgsloan/treadcam
[INFO] frobbed toml for mgsloan/treadcam written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mgsloan/treadcam/Cargo.toml
[INFO] crate mgsloan/treadcam has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mgsloan/treadcam against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/mgsloan/treadcam:/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=forbid" "-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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] b6b68d575a846fd4eef23d60ed3ffd23d56308784ecd9cec6ffff062792811c1
[INFO] running `"docker" "start" "-a" "b6b68d575a846fd4eef23d60ed3ffd23d56308784ecd9cec6ffff062792811c1"`
[INFO] [stderr]    Compiling goertzel v0.2.0
[INFO] [stderr]    Compiling rscam v0.5.4
[INFO] [stderr]    Compiling serde_json v1.0.20
[INFO] [stderr]    Compiling rustfft v2.0.0
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling image v0.17.0
[INFO] [stderr]    Compiling treadcam v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `rustfft::FFTplanner`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use rustfft::FFTplanner;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rustfft::num_complex::Complex`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use rustfft::num_complex::Complex;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:161:13
[INFO] [stderr]     |
[INFO] [stderr] 161 |         for x in 0..(img.width() - 1) {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let mut input_bytes = fs::read("data/walking/out.json").unwrap();
[INFO] [stderr]    |         ----^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `old_main`
[INFO] [stderr]   --> src/main.rs:81:1
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn old_main() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:178:5
[INFO] [stderr]     |
[INFO] [stderr] 178 |     out_img.save("out.jpg");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:181:5
[INFO] [stderr]     |
[INFO] [stderr] 181 |     file.write_all(serde_json::to_string(&data).unwrap().as_bytes());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[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/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.treadcam.e9l35lm1-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33" "/opt/crater/target/debug/deps/treadcam-c827a6553eb07e33.2bgxa8njnqrtnaln.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libgoertzel-ed59ef2d91178f84.rlib" "/opt/crater/target/debug/deps/librustfft-1be6caf6a6fb250f.rlib" "/opt/crater/target/debug/deps/libnum_complex-97a8709f284ee73f.rlib" "/opt/crater/target/debug/deps/librustc_serialize-2bcc2756e320603b.rlib" "/opt/crater/target/debug/deps/libserde_json-3bfade17e54d81ac.rlib" "/opt/crater/target/debug/deps/libitoa-6fba16effd7ff05b.rlib" "/opt/crater/target/debug/deps/libdtoa-f677d767b998c51e.rlib" "/opt/crater/target/debug/deps/libserde-901f852684aebf17.rlib" "/opt/crater/target/debug/deps/libimage-6236daa1598641d7.rlib" "/opt/crater/target/debug/deps/libscoped_threadpool-452a5576de96ac21.rlib" "/opt/crater/target/debug/deps/libgif-0590d3cf8441d013.rlib" "/opt/crater/target/debug/deps/libcolor_quant-3b40de8d240ee697.rlib" "/opt/crater/target/debug/deps/liblzw-348442c780815d9f.rlib" "/opt/crater/target/debug/deps/libjpeg_decoder-da2814c20578924d.rlib" "/opt/crater/target/debug/deps/librayon-340d3b14da75acba.rlib" "/opt/crater/target/debug/deps/libeither-cd18cdcf54d16af5.rlib" "/opt/crater/target/debug/deps/librayon_core-b7e63229aab82137.rlib" "/opt/crater/target/debug/deps/librand-a803f91d59639818.rlib" "/opt/crater/target/debug/deps/libnum_cpus-0a8d5925ae94e299.rlib" "/opt/crater/target/debug/deps/libcrossbeam_deque-49d073d19b4e0f1d.rlib" "/opt/crater/target/debug/deps/libcrossbeam_epoch-544a952a0b3299fb.rlib" "/opt/crater/target/debug/deps/libscopeguard-7b82b968241bfbe0.rlib" "/opt/crater/target/debug/deps/libmemoffset-3966dac0eac8251e.rlib" "/opt/crater/target/debug/deps/liblazy_static-5d25bd349cd1190a.rlib" "/opt/crater/target/debug/deps/libcrossbeam_utils-f81cf2a3d7eda6b1.rlib" "/opt/crater/target/debug/deps/libcfg_if-7157eea9e39683dd.rlib" "/opt/crater/target/debug/deps/libarrayvec-f8a25a7094a265c8.rlib" "/opt/crater/target/debug/deps/libnodrop-9441902c2f1a01c3.rlib" "/opt/crater/target/debug/deps/libpng-a10a25de766452c5.rlib" "/opt/crater/target/debug/deps/libdeflate-7fd391b978983047.rlib" "/opt/crater/target/debug/deps/libinflate-2440a94f9d2f3ec8.rlib" "/opt/crater/target/debug/deps/libadler32-b8dea71f5fe1c216.rlib" "/opt/crater/target/debug/deps/libbitflags-d762847213d957f1.rlib" "/opt/crater/target/debug/deps/libenum_primitive-3e2bd0fa506dbddb.rlib" "/opt/crater/target/debug/deps/libnum_traits-606d6ef853233ff7.rlib" "/opt/crater/target/debug/deps/libnum_rational-ef34f3256f3fbbf1.rlib" "/opt/crater/target/debug/deps/libnum_iter-d902738207d4b6f1.rlib" "/opt/crater/target/debug/deps/libnum_integer-f027f3717a5c870d.rlib" "/opt/crater/target/debug/deps/libnum_traits-2e53cc577996e2d3.rlib" "/opt/crater/target/debug/deps/libbyteorder-b0e5f8c7c524ab2e.rlib" "/opt/crater/target/debug/deps/librscam-29038b5b6d7b793c.rlib" "/opt/crater/target/debug/deps/liblibc-9a5832aeda4f9a8d.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-b9cdeeb7d71e069b.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-2c784314f5b61a49.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-3b6efc0e4ddb88fa.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-f958c03192217b33.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-6a937665f3cd6c5f.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-e29e11dee090b90f.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-83c4e27232163c87.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-39348c626a7cd664.rlib" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-a98540404781e6a7.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/7fea0229842e79db1159ea58ad9a653b288efee9-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-f0f63061644276a5.rlib" "-Wl,-Bdynamic" "-lv4l2" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lv4l2
[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 `treadcam`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b6b68d575a846fd4eef23d60ed3ffd23d56308784ecd9cec6ffff062792811c1"`
[INFO] running `"docker" "rm" "-f" "b6b68d575a846fd4eef23d60ed3ffd23d56308784ecd9cec6ffff062792811c1"`
[INFO] [stdout] b6b68d575a846fd4eef23d60ed3ffd23d56308784ecd9cec6ffff062792811c1