[INFO] updating cached repository museun/png2sixel
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/museun/png2sixel
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/museun/png2sixel" "work/ex/beta-1.37-6/sources/1.36.0/gh/museun/png2sixel"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/museun/png2sixel'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/museun/png2sixel" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/museun/png2sixel"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/museun/png2sixel'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b201a62d3b8f2f2e6a0869381d7b2587425ba116
[INFO] sha for GitHub repo museun/png2sixel: b201a62d3b8f2f2e6a0869381d7b2587425ba116
[INFO] validating manifest of museun/png2sixel 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 museun/png2sixel 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 museun/png2sixel
[INFO] finished frobbing museun/png2sixel
[INFO] frobbed toml for museun/png2sixel written to work/ex/beta-1.37-6/sources/1.36.0/gh/museun/png2sixel/Cargo.toml
[INFO] started frobbing museun/png2sixel
[INFO] finished frobbing museun/png2sixel
[INFO] frobbed toml for museun/png2sixel written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/museun/png2sixel/Cargo.toml
[INFO] crate museun/png2sixel 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] testing museun/png2sixel 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-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/museun/png2sixel:/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] aa05efbe7fb2a3f7c13d24686fafe160b64a225e8f34c1d3f7636b2b122e070f
[INFO] running `"docker" "start" "-a" "aa05efbe7fb2a3f7c13d24686fafe160b64a225e8f34c1d3f7636b2b122e070f"`
[INFO] [stderr]    Compiling image v0.21.1
[INFO] [stderr]    Compiling png2sixel v0.1.0 (/opt/crater/workdir)
[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/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.png2sixel.c3y0re0j-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc" "/opt/crater/target/debug/deps/png2sixel-3be5b0e5d20645bc.32vba035f36c3aw8.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" "-lsixel" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libimage-8b833acba4fec660.rlib" "/opt/crater/target/debug/deps/libpng-7f7f9c522326d500.rlib" "/opt/crater/target/debug/deps/libdeflate-2ddad7786cae1082.rlib" "/opt/crater/target/debug/deps/libinflate-f270147f503dc3cc.rlib" "/opt/crater/target/debug/deps/libadler32-46acf8b49c11de91.rlib" "/opt/crater/target/debug/deps/libbitflags-6f632fff558bf385.rlib" "/opt/crater/target/debug/deps/libnum_rational-1d373c7b5856c3b8.rlib" "/opt/crater/target/debug/deps/libnum_iter-2622bafef4ecde9b.rlib" "/opt/crater/target/debug/deps/libnum_integer-1de4c870aea09f38.rlib" "/opt/crater/target/debug/deps/libnum_traits-cd98387e0f6e90f9.rlib" "/opt/crater/target/debug/deps/liblzw-f7952389a69c619d.rlib" "/opt/crater/target/debug/deps/libbyteorder-a25b209c708b793b.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" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lsixel
[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 `png2sixel`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "aa05efbe7fb2a3f7c13d24686fafe160b64a225e8f34c1d3f7636b2b122e070f"`
[INFO] running `"docker" "rm" "-f" "aa05efbe7fb2a3f7c13d24686fafe160b64a225e8f34c1d3f7636b2b122e070f"`
[INFO] [stdout] aa05efbe7fb2a3f7c13d24686fafe160b64a225e8f34c1d3f7636b2b122e070f