[INFO] updating cached repository davideGiovannini/rust_realtime_raytracer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/davideGiovannini/rust_realtime_raytracer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/davideGiovannini/rust_realtime_raytracer" "work/ex/beta-1.37-6/sources/1.36.0/gh/davideGiovannini/rust_realtime_raytracer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/davideGiovannini/rust_realtime_raytracer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/davideGiovannini/rust_realtime_raytracer" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/davideGiovannini/rust_realtime_raytracer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/davideGiovannini/rust_realtime_raytracer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b53a925b6d28d3c1f13709d890ed47da7a7f084b
[INFO] sha for GitHub repo davideGiovannini/rust_realtime_raytracer: b53a925b6d28d3c1f13709d890ed47da7a7f084b
[INFO] validating manifest of davideGiovannini/rust_realtime_raytracer 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 davideGiovannini/rust_realtime_raytracer 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 davideGiovannini/rust_realtime_raytracer
[INFO] finished frobbing davideGiovannini/rust_realtime_raytracer
[INFO] frobbed toml for davideGiovannini/rust_realtime_raytracer written to work/ex/beta-1.37-6/sources/1.36.0/gh/davideGiovannini/rust_realtime_raytracer/Cargo.toml
[INFO] started frobbing davideGiovannini/rust_realtime_raytracer
[INFO] finished frobbing davideGiovannini/rust_realtime_raytracer
[INFO] frobbed toml for davideGiovannini/rust_realtime_raytracer written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/davideGiovannini/rust_realtime_raytracer/Cargo.toml
[INFO] crate davideGiovannini/rust_realtime_raytracer 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/davideGiovannini/rust_realtime_raytracer/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing davideGiovannini/rust_realtime_raytracer 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-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/davideGiovannini/rust_realtime_raytracer:/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] d40a7e13f0b80ff4ce60ad17ec793c367b5edfd966df0f3fa9b1671628ac03f1
[INFO] running `"docker" "start" "-a" "d40a7e13f0b80ff4ce60ad17ec793c367b5edfd966df0f3fa9b1671628ac03f1"`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling sdl2-sys v0.19.0
[INFO] [stderr]    Compiling bitflags v0.6.0
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling sdl2 v0.19.0
[INFO] [stderr]    Compiling cgmath v0.9.1
[INFO] [stderr]    Compiling sdl2_ttf v0.19.0
[INFO] [stderr]    Compiling raytracer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `new_from2points`
[INFO] [stderr]   --> src/data_structures/geom.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new_from2points(min_point: Vector, max_point: Vector) -> BoundingBox {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]    --> src/data_structures/geom.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     pub fn set(&mut self, origin: Vector, direction: Vector) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `change_direction`
[INFO] [stderr]    --> src/data_structures/geom.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 |     pub fn change_direction(&mut self, direction: Vector) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `right`
[INFO] [stderr]   --> src/data_structures/camera.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn right(&self) -> Vector {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `direction`
[INFO] [stderr]   --> src/data_structures/camera.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn direction(&self) -> Vector {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.raytracer.672pwodu-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4" "/opt/crater/target/debug/deps/raytracer-eac63f80d9cbcff4.3wzdqlmn1k1d2lr4.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/libscoped_threadpool-c0f647d193d2913b.rlib" "/opt/crater/target/debug/deps/libcgmath-396a7d260433284a.rlib" "/opt/crater/target/debug/deps/libsdl2_ttf-04ae56f282afa362.rlib" "/opt/crater/target/debug/deps/libbitflags-81abcf8e9860211f.rlib" "/opt/crater/target/debug/deps/libsdl2-5e1757f76b96a240.rlib" "/opt/crater/target/debug/deps/librand-3e5b4a02e2baffd2.rlib" "/opt/crater/target/debug/deps/libsdl2_sys-b7d5e9ddddbb6343.rlib" "/opt/crater/target/debug/deps/libbitflags-168187570a9b4d63.rlib" "/opt/crater/target/debug/deps/liblazy_static-341b6e5d210c3d40.rlib" "/opt/crater/target/debug/deps/libnum-c7d6512b673d23f5.rlib" "/opt/crater/target/debug/deps/libnum_rational-7b503b247670e39d.rlib" "/opt/crater/target/debug/deps/libnum_bigint-de8038f75b1889b1.rlib" "/opt/crater/target/debug/deps/librand-cd71948378c41df3.rlib" "/opt/crater/target/debug/deps/liblibc-7251f30ad3cb00df.rlib" "/opt/crater/target/debug/deps/libnum_complex-0234143e0b9830e8.rlib" "/opt/crater/target/debug/deps/librustc_serialize-14dc2f0ed41872b7.rlib" "/opt/crater/target/debug/deps/libnum_iter-1f3bd20f4f6e1ee2.rlib" "/opt/crater/target/debug/deps/libnum_integer-0f78de8fac2b0a35.rlib" "/opt/crater/target/debug/deps/libnum_traits-c08f21e00d561aaa.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" "-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 `raytracer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d40a7e13f0b80ff4ce60ad17ec793c367b5edfd966df0f3fa9b1671628ac03f1"`
[INFO] running `"docker" "rm" "-f" "d40a7e13f0b80ff4ce60ad17ec793c367b5edfd966df0f3fa9b1671628ac03f1"`
[INFO] [stdout] d40a7e13f0b80ff4ce60ad17ec793c367b5edfd966df0f3fa9b1671628ac03f1