[INFO] updating cached repository dstepanov/snake-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dstepanov/snake-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dstepanov/snake-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/dstepanov/snake-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/dstepanov/snake-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dstepanov/snake-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dstepanov/snake-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dstepanov/snake-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c6260fec57e46fdf253478d3f203de3cd3cb809b
[INFO] sha for GitHub repo dstepanov/snake-rs: c6260fec57e46fdf253478d3f203de3cd3cb809b
[INFO] validating manifest of dstepanov/snake-rs 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 dstepanov/snake-rs 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 dstepanov/snake-rs
[INFO] finished frobbing dstepanov/snake-rs
[INFO] frobbed toml for dstepanov/snake-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/dstepanov/snake-rs/Cargo.toml
[INFO] started frobbing dstepanov/snake-rs
[INFO] finished frobbing dstepanov/snake-rs
[INFO] frobbed toml for dstepanov/snake-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dstepanov/snake-rs/Cargo.toml
[INFO] crate dstepanov/snake-rs 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 dstepanov/snake-rs 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/dstepanov/snake-rs:/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] 2de948b1baa11b03725a45fec71a3fcc8fd6bced9ad8d8bb5cf094e7d94fba16
[INFO] running `"docker" "start" "-a" "2de948b1baa11b03725a45fec71a3fcc8fd6bced9ad8d8bb5cf094e7d94fba16"`
[INFO] [stderr]    Compiling sdl2-sys v0.27.2
[INFO] [stderr]    Compiling sdl2 v0.27.3
[INFO] [stderr]    Compiling snake-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:122:13
[INFO] [stderr]     |
[INFO] [stderr] 122 |         let mut next = &mut match self.direction {
[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] 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/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.snake_rs.2pbm5p8x-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6" "/opt/crater/target/debug/deps/snake_rs-6d737f5980e42fe6.5gurrkdvonnx1fxe.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/libsdl2-2a76ae44148d6401.rlib" "/opt/crater/target/debug/deps/librand-83bd262f8e645a2c.rlib" "/opt/crater/target/debug/deps/libsdl2_sys-a002b890301fd209.rlib" "/opt/crater/target/debug/deps/libbitflags-df219a1ec24cdf3b.rlib" "/opt/crater/target/debug/deps/liblazy_static-d7718b504e03d468.rlib" "/opt/crater/target/debug/deps/liblibc-22f85dd78ee629d7.rlib" "/opt/crater/target/debug/deps/libnum-10f90ea37a106ae2.rlib" "/opt/crater/target/debug/deps/libnum_iter-0f89e24b063e10a9.rlib" "/opt/crater/target/debug/deps/libnum_integer-04eeb9b5654fb2cc.rlib" "/opt/crater/target/debug/deps/libnum_traits-5f46d2a51c998e26.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" "-lSDL2_ttf" "-lSDL2" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lSDL2_ttf
[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 `snake-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2de948b1baa11b03725a45fec71a3fcc8fd6bced9ad8d8bb5cf094e7d94fba16"`
[INFO] running `"docker" "rm" "-f" "2de948b1baa11b03725a45fec71a3fcc8fd6bced9ad8d8bb5cf094e7d94fba16"`
[INFO] [stdout] 2de948b1baa11b03725a45fec71a3fcc8fd6bced9ad8d8bb5cf094e7d94fba16