[INFO] updating cached repository https://github.com/asarode/piston-grok
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/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] 61592bceed93bc120e2ce695d466a94c2efb6c87
[INFO] checking asarode/piston-grok against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasarode%2Fpiston-grok" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asarode/piston-grok on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/asarode/piston-grok
[INFO] finished tweaking git repo https://github.com/asarode/piston-grok
[INFO] tweaked toml for git repo https://github.com/asarode/piston-grok written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/asarode/piston-grok already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/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" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ab49125bc6bcd1845e87d50e309014cffa710a9d680032e3cbd98fd5a62e0e7c
[INFO] running `"docker" "start" "-a" "ab49125bc6bcd1845e87d50e309014cffa710a9d680032e3cbd98fd5a62e0e7c"`
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.43.1
[INFO] [stderr]     Checking piston-grok v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/circles.rs:97:26
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn update(&mut self, args: &UpdateArgs) {
[INFO] [stderr]    |                          ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/circles.rs:97:26
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn update(&mut self, args: &UpdateArgs) {
[INFO] [stderr]    |                          ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `App`
[INFO] [stderr]   --> src/spinning_box.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct App {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `render`
[INFO] [stderr]   --> src/spinning_box.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn render(&mut self, args: &RenderArgs) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GREEN`
[INFO] [stderr]   --> src/spinning_box.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         const GREEN: [f32; 4] = [0.0, 1.0, 0.0, 1.0];
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `RED`
[INFO] [stderr]   --> src/spinning_box.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         const RED: [f32; 4] = [1.0, 0.0, 0.0, 1.0];
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `update`
[INFO] [stderr]   --> src/spinning_box.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn update(&mut self, args: &UpdateArgs) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `start`
[INFO] [stderr]   --> src/spinning_box.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub fn start() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `App`
[INFO] [stderr]   --> src/spinning_box.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct App {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `render`
[INFO] [stderr]   --> src/spinning_box.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn render(&mut self, args: &RenderArgs) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GREEN`
[INFO] [stderr]   --> src/spinning_box.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         const GREEN: [f32; 4] = [0.0, 1.0, 0.0, 1.0];
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `RED`
[INFO] [stderr]   --> src/spinning_box.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         const RED: [f32; 4] = [1.0, 0.0, 0.0, 1.0];
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `update`
[INFO] [stderr]   --> src/spinning_box.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn update(&mut self, args: &UpdateArgs) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `start`
[INFO] [stderr]   --> src/spinning_box.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub fn start() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.31s
[INFO] running `"docker" "inspect" "ab49125bc6bcd1845e87d50e309014cffa710a9d680032e3cbd98fd5a62e0e7c"`
[INFO] running `"docker" "rm" "-f" "ab49125bc6bcd1845e87d50e309014cffa710a9d680032e3cbd98fd5a62e0e7c"`
[INFO] [stdout] ab49125bc6bcd1845e87d50e309014cffa710a9d680032e3cbd98fd5a62e0e7c