[INFO] updating cached repository https://github.com/mlang/jackdots
[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] 302a6e1a72263de1f09cbcf2fa2b1f53244bb742
[INFO] testing mlang/jackdots against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlang%2Fjackdots" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mlang/jackdots on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mlang/jackdots
[INFO] finished tweaking git repo https://github.com/mlang/jackdots
[INFO] tweaked toml for git repo https://github.com/mlang/jackdots written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mlang/jackdots already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 497366d4c29d9e764ab4cb3c6ab9a6b70ce5feb3913e6187472334116d72352a
[INFO] running `"docker" "start" "-a" "497366d4c29d9e764ab4cb3c6ab9a6b70ce5feb3913e6187472334116d72352a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]    Compiling ringbuf v0.2.1
[INFO] [stderr]    Compiling jack-sys v0.2.0
[INFO] [stderr]    Compiling jack v0.6.2
[INFO] [stderr]    Compiling jackdots v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `cells`
[INFO] [stderr]   --> src/main.rs:90:16
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn new(cells: usize) -> Self {
[INFO] [stderr]    |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_cells`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Spectrum`
[INFO] [stderr]  --> src/main.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 |     PeakMeter, Spectrum
[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:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |             client.connect_ports(&port, &in_1);
[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:125:13
[INFO] [stderr]     |
[INFO] [stderr] 125 |             io::stdout().flush();
[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/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.jackdots.3iz75d8u-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191" "/opt/rustwide/target/debug/deps/jackdots-08463954b5e7d191.48vn47gfj1bv84sj.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libjack-1ab93685ecf2efd2.rlib" "/opt/rustwide/target/debug/deps/libjack_sys-e50a55e9f27765c4.rlib" "/opt/rustwide/target/debug/deps/liblibloading-d7b2594d71eca070.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-807f2c476a0e6b86.rlib" "/opt/rustwide/target/debug/deps/libclap-e13f1c3a328aca66.rlib" "/opt/rustwide/target/debug/deps/libvec_map-0a3b3bea3eacf388.rlib" "/opt/rustwide/target/debug/deps/libtextwrap-5357795f41cdee73.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-58fb194c691b26f1.rlib" "/opt/rustwide/target/debug/deps/libstrsim-973ca7e6efba7d91.rlib" "/opt/rustwide/target/debug/deps/libbitflags-0bb1eb8c2caf8528.rlib" "/opt/rustwide/target/debug/deps/libatty-ef2d771232311b9e.rlib" "/opt/rustwide/target/debug/deps/liblibc-b9b48b62b9633cf5.rlib" "/opt/rustwide/target/debug/deps/libansi_term-bf3fbdd21e4a8c77.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-205127404fcba336.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-a657948fb7763780.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-4af901391177f653.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-9bdd51edf637d1e0.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-df9a9630b2ea2e1e.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-fddbfe63d5cc9339.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-dc1fcc6e43806791.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-e2f4bff19e00107e.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-a152d13c1d7ed405.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d92b841792fc008d.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a64c249515c023f5.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-57654524b3e40c00.rlib" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-72180f1527a726a2.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.44.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-990cc8f4a91a3ab4.rlib" "-Wl,-Bdynamic" "-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; 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `jackdots`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "497366d4c29d9e764ab4cb3c6ab9a6b70ce5feb3913e6187472334116d72352a"`
[INFO] running `"docker" "rm" "-f" "497366d4c29d9e764ab4cb3c6ab9a6b70ce5feb3913e6187472334116d72352a"`
[INFO] [stdout] 497366d4c29d9e764ab4cb3c6ab9a6b70ce5feb3913e6187472334116d72352a