[INFO] updating cached repository magicgoose/serious_business
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/magicgoose/serious_business
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/magicgoose/serious_business" "work/ex/beta-1.38-1/sources/1.37.0/gh/magicgoose/serious_business"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/magicgoose/serious_business'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/magicgoose/serious_business" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/magicgoose/serious_business"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/magicgoose/serious_business'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7571bdbd3e45f6079b73f8f927ea92f5538005dd
[INFO] sha for GitHub repo magicgoose/serious_business: 7571bdbd3e45f6079b73f8f927ea92f5538005dd
[INFO] validating manifest of magicgoose/serious_business on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of magicgoose/serious_business on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing magicgoose/serious_business
[INFO] finished frobbing magicgoose/serious_business
[INFO] frobbed toml for magicgoose/serious_business written to work/ex/beta-1.38-1/sources/1.37.0/gh/magicgoose/serious_business/Cargo.toml
[INFO] started frobbing magicgoose/serious_business
[INFO] finished frobbing magicgoose/serious_business
[INFO] frobbed toml for magicgoose/serious_business written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/magicgoose/serious_business/Cargo.toml
[INFO] crate magicgoose/serious_business already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing magicgoose/serious_business against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/magicgoose/serious_business:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 8bf11db7b6ff93b056e66ffa017f97efd2fa0d6d120d135ea34fd75a5d90eebe
[INFO] running `"docker" "start" "-a" "8bf11db7b6ff93b056e66ffa017f97efd2fa0d6d120d135ea34fd75a5d90eebe"`
[INFO] [stderr]    Compiling c_ffi_external v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fmt::Display`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::fmt::Display;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::thread;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/main.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     unsafe { soundio_outstream_destroy(out_stream) };
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arg1`
[INFO] [stderr]   --> src/main.rs:18:28
[INFO] [stderr]    |
[INFO] [stderr] 18 | extern "C" fn underflow_cb(arg1: *mut SoundIoOutStream) {
[INFO] [stderr]    |                            ^^^^ help: consider prefixing with an underscore: `_arg1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `frame_count_min`
[INFO] [stderr]   --> src/main.rs:24:25
[INFO] [stderr]    |
[INFO] [stderr] 24 |                         frame_count_min: c_int,
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_frame_count_min`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bytes_per_sample`
[INFO] [stderr]    --> src/ffi/enums.rs:272:5
[INFO] [stderr]     |
[INFO] [stderr] 272 |     pub fn bytes_per_sample(self) -> i32 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `seconds_offset` should have an upper case name
[INFO] [stderr]   --> src/main.rs:27:16
[INFO] [stderr]    |
[INFO] [stderr] 27 |     static mut seconds_offset: f32 = 0_f32;
[INFO] [stderr]    |                ^^^^^^^^^^^^^^ help: convert the identifier to upper case: `SECONDS_OFFSET`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` 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/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.c_ffi_external.4usfjx7w-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e" "/opt/crater/target/debug/deps/c_ffi_external-e73689749437184e.1r9b01ime3mui9cq.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lsoundio" "-Wl,--start-group" "-Wl,-Bstatic" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1d6d86bd078a28e9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e9721e46a424e2a9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-c07193698f282147.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6da45690f3863086.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-690797036dd27680.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3896ccbfd8eda2b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7cccc3739e3d7623.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5e9ba178a513cd29.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-5ca9f83bf63d1f4b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-bba1c7ef9e950882.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-e23c9de62012deb5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9b59dffdcd513d5d.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-17392340ab2e4a97.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ac21508a81e3f7f3.rlib" "-Wl,-Bdynamic" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lsoundio
[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 `c_ffi_external`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8bf11db7b6ff93b056e66ffa017f97efd2fa0d6d120d135ea34fd75a5d90eebe"`
[INFO] running `"docker" "rm" "-f" "8bf11db7b6ff93b056e66ffa017f97efd2fa0d6d120d135ea34fd75a5d90eebe"`
[INFO] [stdout] 8bf11db7b6ff93b056e66ffa017f97efd2fa0d6d120d135ea34fd75a5d90eebe