[INFO] updating cached repository SilverSoldier/Maze-Rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SilverSoldier/Maze-Rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SilverSoldier/Maze-Rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/SilverSoldier/Maze-Rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/SilverSoldier/Maze-Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SilverSoldier/Maze-Rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SilverSoldier/Maze-Rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SilverSoldier/Maze-Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cb23a3967059ec701b9ecb4335e1299f5b5b102b
[INFO] sha for GitHub repo SilverSoldier/Maze-Rust: cb23a3967059ec701b9ecb4335e1299f5b5b102b
[INFO] validating manifest of SilverSoldier/Maze-Rust 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 SilverSoldier/Maze-Rust 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 SilverSoldier/Maze-Rust
[INFO] finished frobbing SilverSoldier/Maze-Rust
[INFO] frobbed toml for SilverSoldier/Maze-Rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/SilverSoldier/Maze-Rust/Cargo.toml
[INFO] started frobbing SilverSoldier/Maze-Rust
[INFO] finished frobbing SilverSoldier/Maze-Rust
[INFO] frobbed toml for SilverSoldier/Maze-Rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SilverSoldier/Maze-Rust/Cargo.toml
[INFO] crate SilverSoldier/Maze-Rust 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing SilverSoldier/Maze-Rust 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/SilverSoldier/Maze-Rust:/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] bee5dc068b4475f97d7e2a4039706ba6e337557b494bac5bd389fba5a0a8adb8
[INFO] running `"docker" "start" "-a" "bee5dc068b4475f97d7e2a4039706ba6e337557b494bac5bd389fba5a0a8adb8"`
[INFO] [stderr]    Compiling gcc v0.3.44
[INFO] [stderr]    Compiling tcod-sys v4.0.1
[INFO] [stderr] error: failed to run custom build command for `tcod-sys v4.0.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/tcod-sys-66f408ed2c672ca8/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/adler32.o" "-c" "libtcod/src/zlib/adler32.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/crc32.o" "-c" "libtcod/src/zlib/crc32.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/deflate.o" "-c" "libtcod/src/zlib/deflate.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/infback.o" "-c" "libtcod/src/zlib/infback.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/inffast.o" "-c" "libtcod/src/zlib/inffast.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/inflate.o" "-c" "libtcod/src/zlib/inflate.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/inftrees.o" "-c" "libtcod/src/zlib/inftrees.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/trees.o" "-c" "libtcod/src/zlib/trees.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/zutil.o" "-c" "libtcod/src/zlib/zutil.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/compress.o" "-c" "libtcod/src/zlib/compress.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/uncompr.o" "-c" "libtcod/src/zlib/uncompr.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/gzclose.o" "-c" "libtcod/src/zlib/gzclose.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/gzlib.o" "-c" "libtcod/src/zlib/gzlib.c"
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzlib.c: In function 'gz_open':
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzlib.c:14:17: warning: implicit declaration of function 'lseek' [-Wimplicit-function-declaration]
[INFO] [stderr] cargo:warning= #  define LSEEK lseek
[INFO] [stderr] cargo:warning=                 ^
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzlib.c:250:24: note: in expansion of macro 'LSEEK'
[INFO] [stderr] cargo:warning=         state->start = LSEEK(state->fd, 0, SEEK_CUR);
[INFO] [stderr] cargo:warning=                        ^~~~~
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/gzread.o" "-c" "libtcod/src/zlib/gzread.c"
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzread.c: In function 'gz_load':
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzread.c:30:15: warning: implicit declaration of function 'read' [-Wimplicit-function-declaration]
[INFO] [stderr] cargo:warning=         ret = read(state->fd, buf + *have, len - *have);
[INFO] [stderr] cargo:warning=               ^~~~
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzread.c: In function 'gzclose_r':
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzread.c:586:11: warning: implicit declaration of function 'close' [-Wimplicit-function-declaration]
[INFO] [stderr] cargo:warning=     ret = close(state->fd);
[INFO] [stderr] cargo:warning=           ^~~~~
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = None
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] PROFILE = Some("debug")
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/gzwrite.o" "-c" "libtcod/src/zlib/gzwrite.c"
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzwrite.c: In function 'gz_comp':
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzwrite.c:84:15: warning: implicit declaration of function 'write' [-Wimplicit-function-declaration]
[INFO] [stderr] cargo:warning=         got = write(state->fd, strm->next_in, strm->avail_in);
[INFO] [stderr] cargo:warning=               ^~~~~
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzwrite.c: In function 'gzclose_w':
[INFO] [stderr] cargo:warning=libtcod/src/zlib/gzwrite.c:561:9: warning: implicit declaration of function 'close' [-Wimplicit-function-declaration]
[INFO] [stderr] cargo:warning=     if (close(state->fd) == -1)
[INFO] [stderr] cargo:warning=         ^~~~~
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] AR_x86_64-unknown-linux-gnu = None
[INFO] [stderr] AR_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_AR = None
[INFO] [stderr] AR = None
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] running: "ar" "crs" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libz.a" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/adler32.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/crc32.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/deflate.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/infback.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/inffast.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/inflate.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/inftrees.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/trees.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/zutil.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/compress.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/uncompr.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/gzclose.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/gzlib.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/gzread.o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/zlib/gzwrite.o"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] cargo:rustc-link-lib=static=z
[INFO] [stderr] cargo:rustc-link-search=native=/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/bresenham_c.o" "-c" "libtcod/src/bresenham_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/bsp_c.o" "-c" "libtcod/src/bsp_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/color_c.o" "-c" "libtcod/src/color_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/console_c.o" "-c" "libtcod/src/console_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/fov_c.o" "-c" "libtcod/src/fov_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/fov_circular_raycasting.o" "-c" "libtcod/src/fov_circular_raycasting.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/fov_diamond_raycasting.o" "-c" "libtcod/src/fov_diamond_raycasting.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/fov_recursive_shadowcasting.o" "-c" "libtcod/src/fov_recursive_shadowcasting.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/fov_permissive2.o" "-c" "libtcod/src/fov_permissive2.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/fov_restrictive.o" "-c" "libtcod/src/fov_restrictive.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/heightmap_c.o" "-c" "libtcod/src/heightmap_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/image_c.o" "-c" "libtcod/src/image_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/lex_c.o" "-c" "libtcod/src/lex_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/list_c.o" "-c" "libtcod/src/list_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/mersenne_c.o" "-c" "libtcod/src/mersenne_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/noise_c.o" "-c" "libtcod/src/noise_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/parser_c.o" "-c" "libtcod/src/parser_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/path_c.o" "-c" "libtcod/src/path_c.c"
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/sys_c.o" "-c" "libtcod/src/sys_c.c"
[INFO] [stderr] cargo:warning=libtcod/src/sys_c.c: In function 'TCOD_sys_get_directory_content':
[INFO] [stderr] cargo:warning=libtcod/src/sys_c.c:159:25: warning: passing argument 2 of 'TCOD_list_push' makes pointer from integer without a cast [-Wint-conversion]
[INFO] [stderr] cargo:warning=     TCOD_list_push(list,strdup(dirent->d_name));
[INFO] [stderr] cargo:warning=                         ^~~~~~
[INFO] [stderr] cargo:warning=In file included from libtcod/include/libtcod.h:178:0,
[INFO] [stderr] cargo:warning=                 from libtcod/src/sys_c.c:41:
[INFO] [stderr] cargo:warning=libtcod/include/list.h:37:18: note: expected 'const void *' but argument is of type 'int'
[INFO] [stderr] cargo:warning= TCODLIB_API void TCOD_list_push(TCOD_list_t l, const void * elt);
[INFO] [stderr] cargo:warning=                  ^~~~~~~~~~~~~~
[INFO] [stderr] cargo:warning=libtcod/src/sys_c.c: In function 'TCOD_sys_clipboard_get':
[INFO] [stderr] cargo:warning=libtcod/src/sys_c.c:645:12: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
[INFO] [stderr] cargo:warning=  char *ret=strdup(xbuf);
[INFO] [stderr] cargo:warning=            ^~~~~~
[INFO] [stderr] ExitStatus(ExitStatus(0))
[INFO] [stderr] running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-m64" "-I" "libtcod/include" "-I" "libtcod/src/zlib" "-fno-strict-aliasing" "-ansi" "-o" "/opt/crater/target/debug/build/tcod-sys-6b8da534d5172c98/out/libtcod/src/sys_opengl_c.o" "-c" "libtcod/src/sys_opengl_c.c"
[INFO] [stderr] cargo:warning=libtcod/src/sys_opengl_c.c:35:21: fatal error: SDL/SDL.h: No such file or directory
[INFO] [stderr] cargo:warning= #include <SDL/SDL.h>
[INFO] [stderr] cargo:warning=                     ^
[INFO] [stderr] cargo:warning=compilation terminated.
[INFO] [stderr] ExitStatus(ExitStatus(256))
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] command did not execute successfully, got: exit code: 1
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'explicit panic', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.44/src/lib.rs:1140:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x56242f77066b - backtrace::backtrace::libunwind::trace::hfe5db90796807973
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x56242f77066b - backtrace::backtrace::trace_unsynchronized::h34b865a835594335
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x56242f77066b - std::sys_common::backtrace::_print::h527254ae44989167
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x56242f77066b - std::sys_common::backtrace::print::he85dd5ddddf46503
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x56242f77066b - std::panicking::default_hook::{{closure}}::h847a2eb38b396f14
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x56242f770347 - std::panicking::default_hook::h2ca0f9a30a0e206b
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x56242f770d90 - std::panicking::rust_panic_with_hook::hffcefc09751839d1
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x56242f743e38 - std::panicking::begin_panic::hbca91486e13650d1
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x56242f725968 - gcc::fail::h2756607236e6ab11
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.44/src/lib.rs:1140
[INFO] [stderr]    9:     0x56242f7251da - gcc::run::hf48da709f86d6743
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.44/src/lib.rs:1133
[INFO] [stderr]   10:     0x56242f71b58d - gcc::Config::compile_object::h9601e97c20d00211
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.44/src/lib.rs:482
[INFO] [stderr]   11:     0x56242f71ae4a - gcc::Config::compile_objects::h2f0fc898094eb23b
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.44/src/lib.rs:448
[INFO] [stderr]   12:     0x56242f719d6c - gcc::Config::compile::h40241d91fbf6a867
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/gcc-0.3.44/src/lib.rs:398
[INFO] [stderr]   13:     0x56242f6e7d14 - build_script_build::build_libtcod_objects::h3188b291b309679c
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tcod-sys-4.0.1/build.rs:16
[INFO] [stderr]   14:     0x56242f6e88d6 - build_script_build::main::h5a9dc2c2ea2a2f1a
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tcod-sys-4.0.1/build.rs:111
[INFO] [stderr]   15:     0x56242f6edda0 - std::rt::lang_start::{{closure}}::hcb85d995761635a7
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/rt.rs:64
[INFO] [stderr]   16:     0x56242f7707e3 - std::rt::lang_start_internal::{{closure}}::h447d8812e3ee306d
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   17:     0x56242f7707e3 - std::panicking::try::do_call::h4a61cb372364c745
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   18:     0x56242f778afa - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   19:     0x56242f77129d - std::panicking::try::hdf71f938885bca42
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   20:     0x56242f77129d - std::panic::catch_unwind::h7e85dbf162b1611a
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   21:     0x56242f77129d - std::rt::lang_start_internal::h1e06cc26b9fc25ea
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   22:     0x56242f6edd79 - std::rt::lang_start::h48a2d020d64c048d
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/rt.rs:64
[INFO] [stderr]   23:     0x56242f6ec05a - main
[INFO] [stderr]   24:     0x7f6a56f322e1 - __libc_start_main
[INFO] [stderr]   25:     0x56242f6e7aaa - _start
[INFO] [stderr]   26:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "bee5dc068b4475f97d7e2a4039706ba6e337557b494bac5bd389fba5a0a8adb8"`
[INFO] running `"docker" "rm" "-f" "bee5dc068b4475f97d7e2a4039706ba6e337557b494bac5bd389fba5a0a8adb8"`
[INFO] [stdout] bee5dc068b4475f97d7e2a4039706ba6e337557b494bac5bd389fba5a0a8adb8