[INFO] updating cached repository https://github.com/iptq/rust-wasm-canvas
[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] 8751c546fb296778b065c35411bc202dab0e7688
[INFO] checking iptq/rust-wasm-canvas against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiptq%2Frust-wasm-canvas" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iptq/rust-wasm-canvas on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/iptq/rust-wasm-canvas
[INFO] finished tweaking git repo https://github.com/iptq/rust-wasm-canvas
[INFO] tweaked toml for git repo https://github.com/iptq/rust-wasm-canvas written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/iptq/rust-wasm-canvas already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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=forbid" "-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" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 810b5bc5c389ab93323023fe98f92e0f8eab758f16706b781c12377381f6f012
[INFO] running `"docker" "start" "-a" "810b5bc5c389ab93323023fe98f92e0f8eab758f16706b781c12377381f6f012"`
[INFO] [stderr]    Compiling cc v1.0.29
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking ref_thread_local v0.0.0
[INFO] [stderr]    Compiling sdl2-sys v0.32.5
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking sdl2 v0.32.1
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking rust-wasm-canvas v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never used: `sdl_context`
[INFO] [stderr]  --> src/system.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     sdl_context: Sdl,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `timer_subsystem`
[INFO] [stderr]  --> src/system.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     timer_subsystem: TimerSubsystem,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `video_subsystem`
[INFO] [stderr]  --> src/system.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     video_subsystem: VideoSubsystem,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `global_system` should have an upper case name
[INFO] [stderr]   --> src/main.rs:17:20
[INFO] [stderr]    |
[INFO] [stderr] 17 |     static managed global_system: System = System::init().unwrap();
[INFO] [stderr]    |                    ^^^^^^^^^^^^^ help: convert the identifier to upper case: `GLOBAL_SYSTEM`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sdl_context`
[INFO] [stderr]  --> src/system.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     sdl_context: Sdl,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `timer_subsystem`
[INFO] [stderr]  --> src/system.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     timer_subsystem: TimerSubsystem,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `video_subsystem`
[INFO] [stderr]  --> src/system.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     video_subsystem: VideoSubsystem,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `global_system` should have an upper case name
[INFO] [stderr]   --> src/main.rs:17:20
[INFO] [stderr]    |
[INFO] [stderr] 17 |     static managed global_system: System = System::init().unwrap();
[INFO] [stderr]    |                    ^^^^^^^^^^^^^ help: convert the identifier to upper case: `GLOBAL_SYSTEM`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.43s
[INFO] running `"docker" "inspect" "810b5bc5c389ab93323023fe98f92e0f8eab758f16706b781c12377381f6f012"`
[INFO] running `"docker" "rm" "-f" "810b5bc5c389ab93323023fe98f92e0f8eab758f16706b781c12377381f6f012"`
[INFO] [stdout] 810b5bc5c389ab93323023fe98f92e0f8eab758f16706b781c12377381f6f012