[INFO] updating cached repository e-matteson/pipit-keyboard
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/e-matteson/pipit-keyboard
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/e-matteson/pipit-keyboard" "work/ex/beta-1.37-6/sources/1.36.0/gh/e-matteson/pipit-keyboard"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/e-matteson/pipit-keyboard'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/e-matteson/pipit-keyboard" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/e-matteson/pipit-keyboard"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/e-matteson/pipit-keyboard'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c7c6c5e38ad2dbc26fa4ef02e99785d7a41116a4
[INFO] sha for GitHub repo e-matteson/pipit-keyboard: c7c6c5e38ad2dbc26fa4ef02e99785d7a41116a4
[INFO] validating manifest of e-matteson/pipit-keyboard on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of e-matteson/pipit-keyboard on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing e-matteson/pipit-keyboard
[INFO] finished frobbing e-matteson/pipit-keyboard
[INFO] frobbed toml for e-matteson/pipit-keyboard written to work/ex/beta-1.37-6/sources/1.36.0/gh/e-matteson/pipit-keyboard/Cargo.toml
[INFO] started frobbing e-matteson/pipit-keyboard
[INFO] finished frobbing e-matteson/pipit-keyboard
[INFO] frobbed toml for e-matteson/pipit-keyboard written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/e-matteson/pipit-keyboard/Cargo.toml
[INFO] crate e-matteson/pipit-keyboard already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing e-matteson/pipit-keyboard against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/e-matteson/pipit-keyboard:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 62e867e95df751e21270e7c202b5afbb2154e04e4d7e0a1c0a7a316e317659e8
[INFO] running `"docker" "start" "-a" "62e867e95df751e21270e7c202b5afbb2154e04e4d7e0a1c0a7a316e317659e8"`
[INFO] [stderr]    Compiling serde v1.0.69
[INFO] [stderr]    Compiling reexport-proc-macro v1.0.5
[INFO] [stderr]    Compiling array-macro v1.0.2
[INFO] [stderr]    Compiling natord v1.0.9
[INFO] [stderr]    Compiling ncurses v5.93.0
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling enumset v0.3.11
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling enum-map-derive v0.2.10
[INFO] [stderr]    Compiling serde_derive v1.0.69
[INFO] [stderr]    Compiling enum-map v0.2.36
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling serde_yaml v0.7.5
[INFO] [stderr]    Compiling cursive v0.8.2
[INFO] [stderr]    Compiling pipit-keyboard v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/types/all_data.rs:161:29
[INFO] [stderr]     |
[INFO] [stderr] 161 |                 if let Some(mut chord) = self.get_chord_in_mode(name, mode) {
[INFO] [stderr]     |                             ----^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/cheatsheet/mod.rs:77:17
[INFO] [stderr]    |
[INFO] [stderr] 77 |             let mut pos = col_positions
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[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/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.main.eernxomz-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/main-fc220b5998f868ea" "/opt/crater/target/debug/deps/main-fc220b5998f868ea.e9ctxgk4jfl6t4o.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libclap-3a1eecb730edf4c9.rlib" "/opt/crater/target/debug/deps/libvec_map-543e31245cb37b03.rlib" "/opt/crater/target/debug/deps/libtextwrap-451ef45577a7a752.rlib" "/opt/crater/target/debug/deps/libstrsim-e16dede6f67e1ca9.rlib" "/opt/crater/target/debug/deps/libbitflags-4f5a5af30acbcb25.rlib" "/opt/crater/target/debug/deps/libatty-54ac8cac86f15421.rlib" "/opt/crater/target/debug/deps/libansi_term-d78a4dc68e723c1a.rlib" "/opt/crater/target/debug/deps/liblazy_static-0098df0396dd5034.rlib" "/opt/crater/target/debug/deps/libtime-bfe991e50ec4a974.rlib" "/opt/crater/target/debug/deps/libsvg-6a022112f946470e.rlib" "/opt/crater/target/debug/deps/libserde_yaml-553b7c452e3f6ecd.rlib" "/opt/crater/target/debug/deps/libyaml_rust-dcdabf090e875205.rlib" "/opt/crater/target/debug/deps/liblinked_hash_map-3c3f2fc4eada21f7.rlib" "/opt/crater/target/debug/deps/libdtoa-afccdcd5ba5ab8a4.rlib" "/opt/crater/target/debug/deps/libnatord-a46601f49a55a80a.rlib" "/opt/crater/target/debug/deps/libitertools-4f34dfdd81acd621.rlib" "/opt/crater/target/debug/deps/libeither-0f95895ac60a72cc.rlib" "/opt/crater/target/debug/deps/libcursive-b9471d8b917ad8be.rlib" "/opt/crater/target/debug/deps/libncurses-63eb52f9ccfb52fe.rlib" "/opt/crater/target/debug/deps/libxi_unicode-e14070b0844185bb.rlib" "/opt/crater/target/debug/deps/libunicode_width-26f3734d51bc29d0.rlib" "/opt/crater/target/debug/deps/libunicode_segmentation-03ea62a2c8eaba7d.rlib" "/opt/crater/target/debug/deps/libtoml-add66631383dc7b5.rlib" "/opt/crater/target/debug/deps/libserde-95b69002e7dc2e76.rlib" "/opt/crater/target/debug/deps/libowning_ref-f1c4e1505999456e.rlib" "/opt/crater/target/debug/deps/libstable_deref_trait-dc0045efd1c5429e.rlib" "/opt/crater/target/debug/deps/libnum-42da0c02d0e206ab.rlib" "/opt/crater/target/debug/deps/libnum_rational-c2d23c6195f75b91.rlib" "/opt/crater/target/debug/deps/libnum_bigint-b793bc891d845f27.rlib" "/opt/crater/target/debug/deps/librand-256e5b3bc08b0b28.rlib" "/opt/crater/target/debug/deps/liblibc-2bc51604af9dbea7.rlib" "/opt/crater/target/debug/deps/libnum_complex-d5426a7f56169568.rlib" "/opt/crater/target/debug/deps/librustc_serialize-04f5d71c016b4cf1.rlib" "/opt/crater/target/debug/deps/libnum_iter-96022ea85631db4f.rlib" "/opt/crater/target/debug/deps/libnum_integer-8b7831b596aa40bb.rlib" "/opt/crater/target/debug/deps/libmaplit-5278593ddc744190.rlib" "/opt/crater/target/debug/deps/liblog-3495fbd1439e5ac8.rlib" "/opt/crater/target/debug/deps/libcfg_if-4922c1ea6aa62895.rlib" "/opt/crater/target/debug/deps/libenumset-9ced518021bd1144.rlib" "/opt/crater/target/debug/deps/libnum_traits-538bf8318a736e8f.rlib" "/opt/crater/target/debug/deps/libenum_map-a62324a8241ec836.rlib" "/opt/crater/target/debug/deps/libreexport_proc_macro-74f6f534cc597a4d.rlib" "/opt/crater/target/debug/deps/libarray_macro-16af6f63679249bb.rlib" "/opt/crater/target/debug/deps/libbyteorder-93baff524b6b07af.rlib" "/opt/crater/target/debug/deps/libbit_vec-af6eee8f269d8370.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9895e8982b0a79e7.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-57306b8ed3378a0e.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-54463ae5adae3649.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-d99667b199a9875a.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-51f4300e102199f5.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-b3ccf1f7737a6a91.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-157c37a3ceb78853.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-505bcee45aafb736.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-c29abd529ba4452b.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-895383a3232f6572.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5594cb4f559bc761.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-38e90baf978bc428.rlib" "-Wl,-Bdynamic" "-lncursesw" "-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 `pipit-keyboard`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "62e867e95df751e21270e7c202b5afbb2154e04e4d7e0a1c0a7a316e317659e8"`
[INFO] running `"docker" "rm" "-f" "62e867e95df751e21270e7c202b5afbb2154e04e4d7e0a1c0a7a316e317659e8"`
[INFO] [stdout] 62e867e95df751e21270e7c202b5afbb2154e04e4d7e0a1c0a7a316e317659e8