[INFO] updating cached repository asarode/piston-grok
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/asarode/piston-grok
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/asarode/piston-grok" "work/ex/beta-1.38-1/sources/1.37.0/gh/asarode/piston-grok"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/asarode/piston-grok'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/asarode/piston-grok" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/asarode/piston-grok"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/asarode/piston-grok'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 61592bceed93bc120e2ce695d466a94c2efb6c87
[INFO] sha for GitHub repo asarode/piston-grok: 61592bceed93bc120e2ce695d466a94c2efb6c87
[INFO] validating manifest of asarode/piston-grok on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of asarode/piston-grok on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing asarode/piston-grok
[INFO] finished frobbing asarode/piston-grok
[INFO] frobbed toml for asarode/piston-grok written to work/ex/beta-1.38-1/sources/1.37.0/gh/asarode/piston-grok/Cargo.toml
[INFO] started frobbing asarode/piston-grok
[INFO] finished frobbing asarode/piston-grok
[INFO] frobbed toml for asarode/piston-grok written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/asarode/piston-grok/Cargo.toml
[INFO] crate asarode/piston-grok already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing asarode/piston-grok against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/asarode/piston-grok:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] de5a8ec1334811274c6403b046bd43a58132e13f3ad1a39c62bf0f4f7e008423
[INFO] running `"docker" "start" "-a" "de5a8ec1334811274c6403b046bd43a58132e13f3ad1a39c62bf0f4f7e008423"`
[INFO] [stderr]    Compiling num_cpus v1.5.1
[INFO] [stderr]    Compiling shared_library v0.1.5
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling x11-dl v2.14.0
[INFO] [stderr]    Compiling png v0.7.0
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling tempfile v2.1.5
[INFO] [stderr]    Compiling gl v0.6.2
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling memmap v0.4.0
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]    Compiling rayon v0.8.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.13
[INFO] [stderr]    Compiling image v0.13.0
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]    Compiling piston2d-opengl_graphics v0.43.1
[INFO] [stderr]    Compiling dlib v0.3.1
[INFO] [stderr]    Compiling wayland-sys v0.8.7
[INFO] [stderr]    Compiling wayland-client v0.8.7
[INFO] [stderr]    Compiling wayland-window v0.5.0
[INFO] [stderr]    Compiling wayland-kbd v0.8.0
[INFO] [stderr]    Compiling winit v0.6.4
[INFO] [stderr]    Compiling glutin v0.8.1
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.37.0
[INFO] [stderr]    Compiling piston-grok v0.1.0 (/opt/crater/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: 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 50.35s
[INFO] running `"docker" "inspect" "de5a8ec1334811274c6403b046bd43a58132e13f3ad1a39c62bf0f4f7e008423"`
[INFO] running `"docker" "rm" "-f" "de5a8ec1334811274c6403b046bd43a58132e13f3ad1a39c62bf0f4f7e008423"`
[INFO] [stdout] de5a8ec1334811274c6403b046bd43a58132e13f3ad1a39c62bf0f4f7e008423
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/asarode/piston-grok:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] dcd02cf1790aef641bfe26814d1d475535be14bbbf3db1daf0615ef43f3c049e
[INFO] running `"docker" "start" "-a" "dcd02cf1790aef641bfe26814d1d475535be14bbbf3db1daf0615ef43f3c049e"`
[INFO] [stderr]    Compiling piston-grok v0.1.0 (/opt/crater/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: 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 2.42s
[INFO] running `"docker" "inspect" "dcd02cf1790aef641bfe26814d1d475535be14bbbf3db1daf0615ef43f3c049e"`
[INFO] running `"docker" "rm" "-f" "dcd02cf1790aef641bfe26814d1d475535be14bbbf3db1daf0615ef43f3c049e"`
[INFO] [stdout] dcd02cf1790aef641bfe26814d1d475535be14bbbf3db1daf0615ef43f3c049e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/asarode/piston-grok:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] b266f1e03357e9663c4ed2801996b2cb7fa0c0e6d284afd76bbe4eb82c67b07d
[INFO] running `"docker" "start" "-a" "b266f1e03357e9663c4ed2801996b2cb7fa0c0e6d284afd76bbe4eb82c67b07d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/piston_grok-b45ab72b8b11a992
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b266f1e03357e9663c4ed2801996b2cb7fa0c0e6d284afd76bbe4eb82c67b07d"`
[INFO] running `"docker" "rm" "-f" "b266f1e03357e9663c4ed2801996b2cb7fa0c0e6d284afd76bbe4eb82c67b07d"`
[INFO] [stdout] b266f1e03357e9663c4ed2801996b2cb7fa0c0e6d284afd76bbe4eb82c67b07d