[INFO] updating cached repository sbeckeriv/greedy-color
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sbeckeriv/greedy-color
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sbeckeriv/greedy-color" "work/ex/beta-1.38-1/sources/1.37.0/gh/sbeckeriv/greedy-color"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sbeckeriv/greedy-color'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sbeckeriv/greedy-color" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sbeckeriv/greedy-color"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sbeckeriv/greedy-color'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fb88ba8f338e4944da2a6998635fca5f393715db
[INFO] sha for GitHub repo sbeckeriv/greedy-color: fb88ba8f338e4944da2a6998635fca5f393715db
[INFO] validating manifest of sbeckeriv/greedy-color 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 sbeckeriv/greedy-color 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 sbeckeriv/greedy-color
[INFO] finished frobbing sbeckeriv/greedy-color
[INFO] frobbed toml for sbeckeriv/greedy-color written to work/ex/beta-1.38-1/sources/1.37.0/gh/sbeckeriv/greedy-color/Cargo.toml
[INFO] started frobbing sbeckeriv/greedy-color
[INFO] finished frobbing sbeckeriv/greedy-color
[INFO] frobbed toml for sbeckeriv/greedy-color written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sbeckeriv/greedy-color/Cargo.toml
[INFO] crate sbeckeriv/greedy-color 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 sbeckeriv/greedy-color against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sbeckeriv/greedy-color:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] abb0d2a7a15856494ad89af8e0e757d637dbc67e7cf25f45ddfd23125c28c5e1
[INFO] running `"docker" "start" "-a" "abb0d2a7a15856494ad89af8e0e757d637dbc67e7cf25f45ddfd23125c28c5e1"`
[INFO] [stderr]    Compiling ruby-sys v0.2.17
[INFO] [stderr]    Compiling ruru v0.9.1
[INFO] [stderr]    Compiling hash_color v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `AnyObject`, `Boolean`, `VM`
[INFO] [stderr]  --> src/lib.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | use ruru::{AnyObject, Boolean, Class, Fixnum, Hash, VM, Array};
[INFO] [stderr]   |            ^^^^^^^^^  ^^^^^^^                       ^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ruru::types::Argc`
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use ruru::types::Argc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/lib.rs:6:33
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::{HashSet, HashMap};
[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/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/hash_color.hash_color.23q78bcq-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/libhash_color.so" "-Wl,--version-script=/tmp/rustcR9bhht/list" "/opt/crater/target/debug/deps/hash_color.qpymobf1fudzsyu.rcgu.o" "/opt/crater/target/debug/deps/hash_color.51cen3o0m154ss5w.rcgu.o" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/usr/lib" "-L" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "-Wl,--whole-archive" "/tmp/rustcR9bhht/libruru-be668bd4e9df3bb4.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/libruby_sys-a989d2bb7aa0bbeb.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/liblibc-a01af4c004fe8646.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/liblazy_static-287e3c5731c128ca.rlib" "-Wl,--no-whole-archive" "-Wl,--start-group" "-Wl,--whole-archive" "/tmp/rustcR9bhht/libstd-4a76ff35a356aedf.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/libpanic_unwind-e11c7b3b3225afe2.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/libbacktrace-13217ede3d276f16.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/libbacktrace_sys-621a9ee22da6caa1.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/librustc_demangle-546c844e8071bbeb.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/libhashbrown-be9569e4d599746f.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/librustc_std_workspace_alloc-47d8845cef2a3bc5.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/libunwind-017511bce73a530c.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/libcfg_if-be7979c57a08057b.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/liblibc-d6459c4f0817c67c.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/liballoc-580035dd98451925.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/librustc_std_workspace_core-aee5c24fff305dea.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcR9bhht/libcore-8a55a4098920125a.rlib" "-Wl,--no-whole-archive" "-Wl,--end-group" "/tmp/rustcR9bhht/libcompiler_builtins-9fc4b5be2ba5cc19.rlib" "-Wl,-Bdynamic" "-lruby-2.3" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil" "-shared"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lruby-2.3
[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 `hash_color`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "abb0d2a7a15856494ad89af8e0e757d637dbc67e7cf25f45ddfd23125c28c5e1"`
[INFO] running `"docker" "rm" "-f" "abb0d2a7a15856494ad89af8e0e757d637dbc67e7cf25f45ddfd23125c28c5e1"`
[INFO] [stdout] abb0d2a7a15856494ad89af8e0e757d637dbc67e7cf25f45ddfd23125c28c5e1