[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 beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] cab9013bedd451d7e19b71634f05644c703cf951b8e7f8065c514abc5670a8e6
[INFO] running `"docker" "start" "-a" "cab9013bedd451d7e19b71634f05644c703cf951b8e7f8065c514abc5670a8e6"`
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling png v0.14.0
[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/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.png2sixel.9n41lawj-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7" "/opt/crater/target/debug/deps/png2sixel-b018c1aa8c6ba7b7.17fi809haltwy9by.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lsixel" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libimage-a93efddc7b4dae21.rlib" "/opt/crater/target/debug/deps/libpng-7a9d1deb556e09f6.rlib" "/opt/crater/target/debug/deps/libdeflate-425afa8725be4b62.rlib" "/opt/crater/target/debug/deps/libinflate-73f2a2165924ce25.rlib" "/opt/crater/target/debug/deps/libadler32-71d1acce3b38b1ac.rlib" "/opt/crater/target/debug/deps/libbitflags-e31ad08aaa94ea6a.rlib" "/opt/crater/target/debug/deps/libnum_rational-8679cff0eff39300.rlib" "/opt/crater/target/debug/deps/libnum_iter-9773bcf1e2992ab2.rlib" "/opt/crater/target/debug/deps/libnum_integer-09198f7f07b77d29.rlib" "/opt/crater/target/debug/deps/libnum_traits-b0613bcbd790bfdc.rlib" "/opt/crater/target/debug/deps/liblzw-0ccf98a99dabc5af.rlib" "/opt/crater/target/debug/deps/libbyteorder-301089d538415037.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-a80a1e8e09cafef8.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e0e6351da805c468.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-e04f54bafc95e331.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-67901d3322495bd5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-bd390b1abaceaec1.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-312dd37fdc7bedfc.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-8ed0e51d58d644a3.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-8a423c320a6c707f.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d6a95598e2238263.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d231614b153016eb.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-3821619027f463e4.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-1cfd794d18771a44.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-dcf33cf10c2452ef.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-c258fea34bf64bce.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" "cab9013bedd451d7e19b71634f05644c703cf951b8e7f8065c514abc5670a8e6"`
[INFO] running `"docker" "rm" "-f" "cab9013bedd451d7e19b71634f05644c703cf951b8e7f8065c514abc5670a8e6"`
[INFO] [stdout] cab9013bedd451d7e19b71634f05644c703cf951b8e7f8065c514abc5670a8e6