[INFO] cloning repository https://github.com/svanellewee/rust-sdl-hackery
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/svanellewee/rust-sdl-hackery" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsvanellewee%2Frust-sdl-hackery", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsvanellewee%2Frust-sdl-hackery'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc8d754d7ab62c228e6acb29e758678a0714e091
[INFO] testing svanellewee/rust-sdl-hackery against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsvanellewee%2Frust-sdl-hackery" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/svanellewee/rust-sdl-hackery on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/svanellewee/rust-sdl-hackery
[INFO] finished tweaking git repo https://github.com/svanellewee/rust-sdl-hackery
[INFO] tweaked toml for git repo https://github.com/svanellewee/rust-sdl-hackery written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/svanellewee/rust-sdl-hackery already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d99c385de157843901ff0a43df54176b07e659bb8b3481799760ae5671a4bf3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6d99c385de157843901ff0a43df54176b07e659bb8b3481799760ae5671a4bf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d99c385de157843901ff0a43df54176b07e659bb8b3481799760ae5671a4bf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d99c385de157843901ff0a43df54176b07e659bb8b3481799760ae5671a4bf3", kill_on_drop: false }`
[INFO] [stdout] 6d99c385de157843901ff0a43df54176b07e659bb8b3481799760ae5671a4bf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e174a4f7c24991d34fe1b8b223bc631e0d7eb3cba1d5965b44c8a4f6344ffe07
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e174a4f7c24991d34fe1b8b223bc631e0d7eb3cba1d5965b44c8a4f6344ffe07", kill_on_drop: false }`
[INFO] [stderr]    Compiling sdl2-sys v0.31.0
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling sdl2 v0.31.0
[INFO] [stderr]    Compiling sdl2-tut v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut canvas = window
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         canvas.fill_rect(dest_rect_0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.sdl2_tut.5cphcrud-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4" "/opt/rustwide/target/debug/deps/sdl2_tut-80bebd89e774d0b4.3tjprh2347c0ocr1.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libsdl2-eba6bad7bf7d4f8e.rlib" "/opt/rustwide/target/debug/deps/librand-98265ce82b4ffe96.rlib" "/opt/rustwide/target/debug/deps/librand-8c6ddfa7cdcea76d.rlib" "/opt/rustwide/target/debug/deps/libsdl2_sys-7f4d371ad1d12ec8.rlib" "/opt/rustwide/target/debug/deps/libbitflags-2660c594cf04f3b5.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-9850e1ed257f46c2.rlib" "/opt/rustwide/target/debug/deps/liblibc-9add9ca391b1258b.rlib" "/opt/rustwide/target/debug/deps/libnum-c54e569a34a1dd17.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-c6603a50c365fb78.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-85263e5223827363.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-94f26091a682b472.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-e12de7683a34c500.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-446a53c2e468675f.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-86fef9fb252a2d33.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-3bed9bfd30304751.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0e38eeb474a7b386.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-a846ed547b824740.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-c9540f0a4fb9265d.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7d2ca66c92c356eb.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-147e2c808f949493.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-bd2a4369506670e9.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74bfdd0ce7d0ed48.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6777f47f1c491841.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-b104f1790174f2be.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-db37898996f45c13.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-25b7435131fc4938.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9d4b6f3c097e876e.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-3f953ad652ab829a.rlib" "-Wl,-Bdynamic" "-lSDL2_image" "-lSDL2" "-lutil" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lSDL2_image
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sdl2-tut`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "e174a4f7c24991d34fe1b8b223bc631e0d7eb3cba1d5965b44c8a4f6344ffe07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e174a4f7c24991d34fe1b8b223bc631e0d7eb3cba1d5965b44c8a4f6344ffe07", kill_on_drop: false }`
[INFO] [stdout] e174a4f7c24991d34fe1b8b223bc631e0d7eb3cba1d5965b44c8a4f6344ffe07