[INFO] updating cached repository https://github.com/UniversityRadioYork/silentjack-rs
[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] 24ce895e6ba830da2db021858cf2d92c7b2de097
[INFO] testing UniversityRadioYork/silentjack-rs against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUniversityRadioYork%2Fsilentjack-rs" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/UniversityRadioYork/silentjack-rs on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/UniversityRadioYork/silentjack-rs
[INFO] finished tweaking git repo https://github.com/UniversityRadioYork/silentjack-rs
[INFO] tweaked toml for git repo https://github.com/UniversityRadioYork/silentjack-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/UniversityRadioYork/silentjack-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stdout] febfe2ec19af9bf773de3535c2638170998c9e7e2f24912e525880dc52b350dd
[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" "febfe2ec19af9bf773de3535c2638170998c9e7e2f24912e525880dc52b350dd"`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling jack-sys v0.2.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling jack v0.6.2
[INFO] [stderr]    Compiling silentjack-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `db2lin`
[INFO] [stderr]   --> src/main.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn db2lin(db: f32) -> f32 {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[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/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.silentjack_rs.f4779nve-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725" "/opt/rustwide/target/debug/deps/silentjack_rs-69411b72f3e85725.4yzcu1t738u5zai0.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libjack-3090a438218353c2.rlib" "/opt/rustwide/target/debug/deps/libjack_sys-f00ef714cbfc4d4a.rlib" "/opt/rustwide/target/debug/deps/liblibloading-71690e27db57d600.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-81e71b56f2a8a8f3.rlib" "/opt/rustwide/target/debug/deps/libclap-92a249967a714e0f.rlib" "/opt/rustwide/target/debug/deps/libvec_map-0124ff4ac8afcced.rlib" "/opt/rustwide/target/debug/deps/libtextwrap-4bd7a20ff86ce273.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-06d7a0793e9ca709.rlib" "/opt/rustwide/target/debug/deps/libstrsim-b32b1c93e6d2d890.rlib" "/opt/rustwide/target/debug/deps/libbitflags-c5180c3dc5cc8193.rlib" "/opt/rustwide/target/debug/deps/libatty-59b9aa941820d4f5.rlib" "/opt/rustwide/target/debug/deps/liblibc-c2725012b0cfd464.rlib" "/opt/rustwide/target/debug/deps/libansi_term-0d3bacace01cab89.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-62f93208e14fa8f0.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-b2c4dbe979cef5e2.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-8b9b66cb3e9f891d.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-5998b08bf29f56ac.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-efd1670396ccb585.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6435b9209e888961.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-866e5dfb603b34d2.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-75eac3089695b3b4.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-35744537b4825584.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-f7ee5081d96fb2cd.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-5b28479cb639d76c.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-f827473dd3b319fa.rlib" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-53f9c299c549c6a9.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/41997647ba6a77908f6ef64401414feb00bccf16/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-44132fbb3fcc18d3.rlib" "-Wl,-Bdynamic" "-ljack" "-ldl" "-lutil" "-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 `silentjack-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "febfe2ec19af9bf773de3535c2638170998c9e7e2f24912e525880dc52b350dd"`
[INFO] running `"docker" "rm" "-f" "febfe2ec19af9bf773de3535c2638170998c9e7e2f24912e525880dc52b350dd"`
[INFO] [stdout] febfe2ec19af9bf773de3535c2638170998c9e7e2f24912e525880dc52b350dd