[INFO] cloning repository https://github.com/malcx95/ascii-christmas-tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/malcx95/ascii-christmas-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalcx95%2Fascii-christmas-tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalcx95%2Fascii-christmas-tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f0ea6bbdca595b691b66c88a3fcdefdce8d2557
[INFO] testing malcx95/ascii-christmas-tree against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmalcx95%2Fascii-christmas-tree" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/malcx95/ascii-christmas-tree on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/malcx95/ascii-christmas-tree
[INFO] finished tweaking git repo https://github.com/malcx95/ascii-christmas-tree
[INFO] tweaked toml for git repo https://github.com/malcx95/ascii-christmas-tree written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/malcx95/ascii-christmas-tree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8f20936250ec6e9be4f517e5f131556914cf29c5234025188066553b662b156
[INFO] running `Command { std: "docker" "start" "-a" "b8f20936250ec6e9be4f517e5f131556914cf29c5234025188066553b662b156", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8f20936250ec6e9be4f517e5f131556914cf29c5234025188066553b662b156", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8f20936250ec6e9be4f517e5f131556914cf29c5234025188066553b662b156", kill_on_drop: false }`
[INFO] [stdout] b8f20936250ec6e9be4f517e5f131556914cf29c5234025188066553b662b156
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c06a66ac9796e0a175c1b5570d4aa79d83f45518e3a3f167a117e1b2e62084a
[INFO] running `Command { std: "docker" "start" "-a" "0c06a66ac9796e0a175c1b5570d4aa79d83f45518e3a3f167a117e1b2e62084a", kill_on_drop: false }`
[INFO] [stderr]    Compiling phf_shared v0.7.20
[INFO] [stderr]    Compiling serde v0.8.20
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling khronos_api v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.8
[INFO] [stderr]    Compiling gcc v0.3.40
[INFO] [stderr]    Compiling crossbeam v0.2.10
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling smallvec v0.1.8
[INFO] [stderr]    Compiling xml-rs v0.3.5
[INFO] [stderr]    Compiling tempfile v2.1.4
[INFO] [stderr]    Compiling num-rational v0.1.35
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling shared_library v0.1.5
[INFO] [stderr]    Compiling phf_generator v0.7.20
[INFO] [stderr]    Compiling phf v0.7.20
[INFO] [stderr]    Compiling memmap v0.2.3
[INFO] [stderr]    Compiling phf_codegen v0.7.20
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling nalgebra v0.10.1
[INFO] [stderr]    Compiling x11-dl v2.11.0
[INFO] [stderr]    Compiling target_build_utils v0.1.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling wayland-scanner v0.5.11
[INFO] [stderr]    Compiling gl_generator v0.5.2
[INFO] [stderr]    Compiling wayland-client v0.5.12
[INFO] [stderr]    Compiling glutin v0.6.2
[INFO] [stderr]    Compiling glium v0.15.0
[INFO] [stderr]    Compiling serde_json v0.8.4
[INFO] [stderr]    Compiling libloading v0.3.1
[INFO] [stderr]    Compiling dlib v0.3.1
[INFO] [stderr]    Compiling wayland-sys v0.5.11
[INFO] [stderr]    Compiling wayland-kbd v0.3.6
[INFO] [stderr]    Compiling wayland-window v0.2.3
[INFO] [stderr]    Compiling caca_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/main.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn init_caca() -> Result<(*mut libcaca_ffi::caca_display_t), String> {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     try!(file.read_to_string(&mut contents));
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let mut file = try!(File::open(path));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.caca_tree.a3d3ba96-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41.26475vyvwrk384qu.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lcaca" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libnalgebra-f7d37058c96fcde1.rlib" "/opt/rustwide/target/debug/deps/libnum-45ccb36fc9d51785.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-228a2219b2430505.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-3bd4f37483401c64.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-797480a7e78f7b25.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-8b95d22092a8439a.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-e291f3bcdd58d36f.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-64aad82bdd4bbfbe.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-0e10216c64e454b4.rlib" "/opt/rustwide/target/debug/deps/libglium-2b4dd2883241a8e6.rlib" "/opt/rustwide/target/debug/deps/libglutin-2862d93189adced6.rlib" "/opt/rustwide/target/debug/deps/libwayland_window-d05411f4bab42c15.rlib" "/opt/rustwide/target/debug/deps/libtempfile-56a82695d78e87d9.rlib" "/opt/rustwide/target/debug/deps/librand-38cb5ee1e530f28b.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-dee9f612019fe116.rlib" "/opt/rustwide/target/debug/deps/libwayland_kbd-7cedcbbb15816acb.rlib" "/opt/rustwide/target/debug/deps/libmemmap-eac64524f01fd1e9.rlib" "/opt/rustwide/target/debug/deps/libosmesa_sys-7033c0dab3cd1fdc.rlib" "/opt/rustwide/target/debug/deps/libwayland_client-f740249717ea402d.rlib" "/opt/rustwide/target/debug/deps/libwayland_sys-0e5121f1ab22ceb3.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-ea1dd145109d7244.rlib" "/opt/rustwide/target/debug/deps/libdlib-745cbfcc9d90b43d.rlib" "/opt/rustwide/target/debug/deps/liblibloading-687cd550eb6eed14.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam-c627f0ff48c21f11.rlib" "/opt/rustwide/target/debug/deps/libbitflags-b22133e6ab819f70.rlib" "/opt/rustwide/target/debug/deps/libx11_dl-92a15dce179d8c16.rlib" "/opt/rustwide/target/debug/deps/libshared_library-20d5fbd2d438339e.rlib" "/opt/rustwide/target/debug/deps/libsmallvec-9f03f23545b118d8.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-791cf215d17cac06.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-1070facfe5c9eae7.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-05b07151452f007a.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-33d6be977058b36c.rlib" "/opt/rustwide/target/debug/deps/libdbghelp-a84ca1bc5e51cf01.rlib" "/opt/rustwide/target/debug/deps/libwinapi-91b2b0ae1989e851.rlib" "/opt/rustwide/target/debug/deps/libkernel32-22de4dded38eac93.rlib" "/opt/rustwide/target/debug/deps/liblibc-bc65a03c243104c6.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-d35d41b8217d9572.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-008055cc7d873802.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-06f01ac2578bda94.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-f9a3c3274a1835e0.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-d4cbb754ee9f4daa.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-95c14e1c1e3ebcc4.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-d489f0ca872880cc.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-75f07df0b18fea39.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-0c35b278736219a2.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-e530649c9a06e3c6.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-6b148909d375a785.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-cd15fa647f4775d1.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74be3a703f788ba2.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-8f2c5b445c28b2e3.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-8480e85e0be96197.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-ac23a75f6f42004e.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-557ba8776e04d182.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-4beb03d03503c439.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-dd7db1bec6909f24.rlib" "-Wl,-Bdynamic" "-ldl" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/caca_tree-5c08a235b9ecbf41" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lcaca
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `caca_tree` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0c06a66ac9796e0a175c1b5570d4aa79d83f45518e3a3f167a117e1b2e62084a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c06a66ac9796e0a175c1b5570d4aa79d83f45518e3a3f167a117e1b2e62084a", kill_on_drop: false }`
[INFO] [stdout] 0c06a66ac9796e0a175c1b5570d4aa79d83f45518e3a3f167a117e1b2e62084a