[INFO] updating cached repository https://github.com/generalelectrix/piston-tutorial
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1edd802308e988309a8563a8970f0c3f2bd25d8c
[INFO] testing generalelectrix/piston-tutorial against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeneralelectrix%2Fpiston-tutorial" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/generalelectrix/piston-tutorial on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/generalelectrix/piston-tutorial
[INFO] finished tweaking git repo https://github.com/generalelectrix/piston-tutorial
[INFO] tweaked toml for git repo https://github.com/generalelectrix/piston-tutorial written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/generalelectrix/piston-tutorial already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/PistonDevelopers/sdl2_window`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 34081c6d4817b3e2124851b0597f903de0bf8b0458ef5162236bec886212e124
[INFO] running `"docker" "start" "-a" "34081c6d4817b3e2124851b0597f903de0bf8b0458ef5162236bec886212e124"`
[INFO] [stderr]    Compiling freetype-sys v0.4.0
[INFO] [stderr]    Compiling pistoncore-input v0.14.0
[INFO] [stderr]    Compiling piston2d-graphics v0.17.3
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]    Compiling glutin v0.6.2
[INFO] [stderr]    Compiling pistoncore-input v0.28.0
[INFO] [stderr]    Compiling wayland-kbd v0.3.6
[INFO] [stderr]    Compiling gl_generator v0.6.1
[INFO] [stderr]    Compiling freetype-rs v0.11.0
[INFO] [stderr]    Compiling pistoncore-window v0.22.1
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]    Compiling pistoncore-event_loop v0.25.1
[INFO] [stderr]    Compiling piston v0.25.1
[INFO] [stderr]    Compiling pistoncore-window v0.44.0
[INFO] [stderr]    Compiling gl v0.6.5
[INFO] [stderr]    Compiling pistoncore-sdl2_window v0.63.0 (https://github.com/PistonDevelopers/sdl2_window#db9d92f7)
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.29.0
[INFO] [stderr]    Compiling piston2d-opengl_graphics v0.32.0
[INFO] [stderr]    Compiling spinning-square v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/main.rs:52:33
[INFO] [stderr]    |
[INFO] [stderr] 52 |                     let start = ((seg as f64 * seg_width) + marquee);
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `sdl2_window::Sdl2Window: piston::window::BuildFromWindowSettings` is not satisfied
[INFO] [stderr]   --> src/main.rs:81:10
[INFO] [stderr]    |
[INFO] [stderr] 81 |         .build()
[INFO] [stderr]    |          ^^^^^ the trait `piston::window::BuildFromWindowSettings` is not implemented for `sdl2_window::Sdl2Window`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `events` found for type `sdl2_window::Sdl2Window` in the current scope
[INFO] [stderr]   --> src/main.rs:91:29
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut events = window.events();
[INFO] [stderr]    |                             ^^^^^^ method not found in `sdl2_window::Sdl2Window`
[INFO] [stderr]    |
[INFO] [stderr]    = note: the method `events` exists but the following trait bounds were not satisfied:
[INFO] [stderr]            `sdl2_window::Sdl2Window : piston::event_loop::Events`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `piston::event_loop`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use piston::event_loop::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `spinning-square`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "34081c6d4817b3e2124851b0597f903de0bf8b0458ef5162236bec886212e124"`
[INFO] running `"docker" "rm" "-f" "34081c6d4817b3e2124851b0597f903de0bf8b0458ef5162236bec886212e124"`
[INFO] [stdout] 34081c6d4817b3e2124851b0597f903de0bf8b0458ef5162236bec886212e124