[INFO] updating cached repository ahdinosaur/metronome
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ahdinosaur/metronome
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ahdinosaur/metronome" "work/ex/beta-1.38-1/sources/1.37.0/gh/ahdinosaur/metronome"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ahdinosaur/metronome'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ahdinosaur/metronome" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ahdinosaur/metronome"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ahdinosaur/metronome'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 62baf61cb4dc0873e24a0d1abc854e622ff13743
[INFO] sha for GitHub repo ahdinosaur/metronome: 62baf61cb4dc0873e24a0d1abc854e622ff13743
[INFO] validating manifest of ahdinosaur/metronome 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 ahdinosaur/metronome 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 ahdinosaur/metronome
[INFO] finished frobbing ahdinosaur/metronome
[INFO] frobbed toml for ahdinosaur/metronome written to work/ex/beta-1.38-1/sources/1.37.0/gh/ahdinosaur/metronome/Cargo.toml
[INFO] started frobbing ahdinosaur/metronome
[INFO] finished frobbing ahdinosaur/metronome
[INFO] frobbed toml for ahdinosaur/metronome written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ahdinosaur/metronome/Cargo.toml
[INFO] crate ahdinosaur/metronome 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 ahdinosaur/metronome 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-3/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/ahdinosaur/metronome:/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] ef4745cc9c969c214c3453bd943e06956d69cc5e96976c778d64b5fefe1db3eb
[INFO] running `"docker" "start" "-a" "ef4745cc9c969c214c3453bd943e06956d69cc5e96976c778d64b5fefe1db3eb"`
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling ncurses v5.91.0
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling metronome v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/interface.rs:79:13
[INFO] [stderr]    |
[INFO] [stderr] 79 |             ncurses::endwin();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/interface.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |         for i in 0..ticks_since_beat.to_integer() {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/interface.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |         for i in 0..beats_since_bar.to_integer() {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/interface.rs:139:13
[INFO] [stderr]     |
[INFO] [stderr] 139 |         for i in 0..bars_since_loop.to_integer() {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_first_tick`
[INFO] [stderr]    --> src/clock.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn is_first_tick (&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_first_beat`
[INFO] [stderr]    --> src/clock.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn is_first_beat (&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_first_bar`
[INFO] [stderr]    --> src/clock.rs:145:5
[INFO] [stderr]     |
[INFO] [stderr] 145 |     pub fn is_first_bar (&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.metronome.26ftzzfp-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505" "/opt/crater/target/debug/deps/metronome-5dd6779e6f3b5505.4756i3gqg9x3nvll.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/usr/lib/x86_64-linux-gnu" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libnum-d3cb860d80362d2f.rlib" "/opt/crater/target/debug/deps/libnum_rational-abd632ffe636ca99.rlib" "/opt/crater/target/debug/deps/libnum_bigint-c1423d07681e53d3.rlib" "/opt/crater/target/debug/deps/librand-2981ef7bae904deb.rlib" "/opt/crater/target/debug/deps/libnum_complex-cfb6abb62956e0e9.rlib" "/opt/crater/target/debug/deps/librustc_serialize-fc0a027b4489f806.rlib" "/opt/crater/target/debug/deps/libnum_iter-d7a3cfbb0f97114c.rlib" "/opt/crater/target/debug/deps/libnum_integer-b5cdd5f0bcb9a025.rlib" "/opt/crater/target/debug/deps/libnum_traits-21fe451f10806df6.rlib" "/opt/crater/target/debug/deps/libncurses-bd632db5d4e5dea2.rlib" "/opt/crater/target/debug/deps/liblibc-9d78a2d2719851af.rlib" "-Wl,--start-group" "/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" "-lncursesw" "-lncurses" "-ltinfo" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lncursesw
[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 `metronome`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ef4745cc9c969c214c3453bd943e06956d69cc5e96976c778d64b5fefe1db3eb"`
[INFO] running `"docker" "rm" "-f" "ef4745cc9c969c214c3453bd943e06956d69cc5e96976c778d64b5fefe1db3eb"`
[INFO] [stdout] ef4745cc9c969c214c3453bd943e06956d69cc5e96976c778d64b5fefe1db3eb