[INFO] updating cached repository https://github.com/Spunge/forex
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7a4951edad7d506422b66ce80c032422d38e6c27
[INFO] testing Spunge/forex against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpunge%2Fforex" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Spunge/forex on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Spunge/forex
[INFO] finished tweaking git repo https://github.com/Spunge/forex
[INFO] tweaked toml for git repo https://github.com/Spunge/forex written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Spunge/forex already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stdout] b755952717660c25ef206073eec4e83cb9837ff21dc3399b8da179dce744bd50
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "b755952717660c25ef206073eec4e83cb9837ff21dc3399b8da179dce744bd50"`
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]    Compiling jack-sys v0.2.0 (https://github.com/spunge/rust-jack.git#c645e0b1)
[INFO] [stderr]    Compiling jack v0.6.0-rc1 (https://github.com/spunge/rust-jack.git#c645e0b1)
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling gilrs-core v0.2.5
[INFO] [stderr]    Compiling gilrs v0.7.4
[INFO] [stderr]    Compiling forex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:170:13
[INFO] [stderr]     |
[INFO] [stderr] 170 |             writer.write(&jack::RawMidi { time: frame, bytes: &bytes });
[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] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.forex.c2feurnm-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522" "/opt/rustwide/target/debug/deps/forex-360ff21b86f9a522.41csze2klwxv4v2y.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/lib/x86_64-linux-gnu" "-L" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libgilrs-0ec27b129a7ef1d3.rlib" "/opt/rustwide/target/debug/deps/libgilrs_core-bd4cca6686248d25.rlib" "/opt/rustwide/target/debug/deps/liblog-dd0cc9f7ce37032a.rlib" "/opt/rustwide/target/debug/deps/libuuid-0465e7b0dac43163.rlib" "/opt/rustwide/target/debug/deps/libvec_map-0124ff4ac8afcced.rlib" "/opt/rustwide/target/debug/deps/libnix-fd836c576bece3cb.rlib" "/opt/rustwide/target/debug/deps/libvoid-97cb09eed3196251.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-7bfa6ddb9b2ff1d3.rlib" "/opt/rustwide/target/debug/deps/liblibudev_sys-ba791a0c69771a7f.rlib" "/opt/rustwide/target/debug/deps/libfnv-5eb3a865ee06cdd3.rlib" "/opt/rustwide/target/debug/deps/libjack-9c7bac88d5a38e1e.rlib" "/opt/rustwide/target/debug/deps/libjack_sys-13fde66fef494a9b.rlib" "/opt/rustwide/target/debug/deps/liblibloading-71690e27db57d600.rlib" "/opt/rustwide/target/debug/deps/liblibc-be52b26c0aa2bfbb.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-81e71b56f2a8a8f3.rlib" "/opt/rustwide/target/debug/deps/libbitflags-c5180c3dc5cc8193.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1dac1a412c98f50d.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-b7841fd014bf83a1.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-338c0763450dca22.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-5f2e5d11836e0967.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-81a9070bd3553adf.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-e297830377b95af4.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-b38b87f2dd197fa0.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-601015f2e15e7e26.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-439f3a589bd88586.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-57ab7e6ac23ce11f.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-3aec7f88778e912a.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-b6806800b307d4b9.rlib" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-e49d7651b12f7563.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/28742a1146f10a4f09369baad027a464acb7a766/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-e8266574e26adcc3.rlib" "-Wl,-Bdynamic" "-ludev" "-ljack" "-ldl" "-lutil" "-ldl" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -ljack
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `forex`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b755952717660c25ef206073eec4e83cb9837ff21dc3399b8da179dce744bd50"`
[INFO] running `"docker" "rm" "-f" "b755952717660c25ef206073eec4e83cb9837ff21dc3399b8da179dce744bd50"`
[INFO] [stdout] b755952717660c25ef206073eec4e83cb9837ff21dc3399b8da179dce744bd50