[INFO] updating cached repository coeuvre/rust-2048
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/coeuvre/rust-2048
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/coeuvre/rust-2048" "work/ex/beta-1.38-1/sources/1.37.0/gh/coeuvre/rust-2048"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/coeuvre/rust-2048'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/coeuvre/rust-2048" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/coeuvre/rust-2048"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/coeuvre/rust-2048'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9318fefff673888ce11098a37f7c95dd7dbbbfda
[INFO] sha for GitHub repo coeuvre/rust-2048: 9318fefff673888ce11098a37f7c95dd7dbbbfda
[INFO] validating manifest of coeuvre/rust-2048 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 coeuvre/rust-2048 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 coeuvre/rust-2048
[INFO] finished frobbing coeuvre/rust-2048
[INFO] frobbed toml for coeuvre/rust-2048 written to work/ex/beta-1.38-1/sources/1.37.0/gh/coeuvre/rust-2048/Cargo.toml
[INFO] started frobbing coeuvre/rust-2048
[INFO] finished frobbing coeuvre/rust-2048
[INFO] frobbed toml for coeuvre/rust-2048 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/coeuvre/rust-2048/Cargo.toml
[INFO] crate coeuvre/rust-2048 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] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/coeuvre/rust-2048/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[INFO] the lockfile is outdated, regenerating it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" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 coeuvre/rust-2048 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/coeuvre/rust-2048:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] c1eb4048b1abc3dbaba9d8fba04d291dda824fd66af230b88f2f0bbb25fbcf0c
[INFO] running `"docker" "start" "-a" "c1eb4048b1abc3dbaba9d8fba04d291dda824fd66af230b88f2f0bbb25fbcf0c"`
[INFO] [stderr]    Compiling sdl2-sys v0.27.3
[INFO] [stderr]    Compiling piston-texture v0.5.0
[INFO] [stderr]    Compiling piston-shaders_graphics2d v0.1.0
[INFO] [stderr]    Compiling draw_state v0.6.0
[INFO] [stderr]    Compiling wayland-scanner v0.7.8
[INFO] [stderr]    Compiling pistoncore-input v0.15.0
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling memmap v0.4.0
[INFO] [stderr]    Compiling glutin v0.7.4
[INFO] [stderr]    Compiling png v0.6.2
[INFO] [stderr]    Compiling gfx_core v0.5.1
[INFO] [stderr]    Compiling piston2d-graphics v0.19.0
[INFO] [stderr]    Compiling sdl2 v0.27.3
[INFO] [stderr]    Compiling wayland-client v0.7.8
[INFO] [stderr]    Compiling wayland-sys v0.7.8
[INFO] [stderr]    Compiling pistoncore-window v0.24.0
[INFO] [stderr]    Compiling image v0.12.4
[INFO] [stderr]    Compiling pistoncore-event_loop v0.27.0
[INFO] [stderr]    Compiling piston v0.27.0
[INFO] [stderr]    Compiling wayland-kbd v0.6.3
[INFO] [stderr]    Compiling wayland-window v0.4.4
[INFO] [stderr]    Compiling pistoncore-sdl2_window v0.38.0
[INFO] [stderr]    Compiling winit v0.5.11
[INFO] [stderr]    Compiling piston2d-opengl_graphics v0.37.0
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.33.0
[INFO] [stderr]    Compiling gfx v0.13.0
[INFO] [stderr]    Compiling gfx_device_gl v0.12.0
[INFO] [stderr]    Compiling piston-gfx_texture v0.20.0
[INFO] [stderr]    Compiling piston2d-gfx_graphics v0.35.0
[INFO] [stderr]    Compiling piston_window v0.61.0
[INFO] [stderr]    Compiling rust-2048 v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Key` is imported redundantly
[INFO] [stderr]    --> src/app.rs:108:7
[INFO] [stderr]     |
[INFO] [stderr] 3   | use piston_window::*;
[INFO] [stderr]     |     ---------------- the item `Key` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 108 |         use piston_window::Key;        
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Encodable`
[INFO] [stderr]  --> src/settings.rs:6:30
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rustc_serialize::{ json, Encodable, Decodable };
[INFO] [stderr]   |                              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 22s
[INFO] running `"docker" "inspect" "c1eb4048b1abc3dbaba9d8fba04d291dda824fd66af230b88f2f0bbb25fbcf0c"`
[INFO] running `"docker" "rm" "-f" "c1eb4048b1abc3dbaba9d8fba04d291dda824fd66af230b88f2f0bbb25fbcf0c"`
[INFO] [stdout] c1eb4048b1abc3dbaba9d8fba04d291dda824fd66af230b88f2f0bbb25fbcf0c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/coeuvre/rust-2048:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f7dae23fa10193421378a4cbaeb581a7f7046581288cc5f772d4771060da64a4
[INFO] running `"docker" "start" "-a" "f7dae23fa10193421378a4cbaeb581a7f7046581288cc5f772d4771060da64a4"`
[INFO] [stderr]    Compiling rust-2048 v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Key` is imported redundantly
[INFO] [stderr]    --> src/app.rs:108:7
[INFO] [stderr]     |
[INFO] [stderr] 3   | use piston_window::*;
[INFO] [stderr]     |     ---------------- the item `Key` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 108 |         use piston_window::Key;        
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Encodable`
[INFO] [stderr]  --> src/settings.rs:6:30
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rustc_serialize::{ json, Encodable, Decodable };
[INFO] [stderr]   |                              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `"docker" "inspect" "f7dae23fa10193421378a4cbaeb581a7f7046581288cc5f772d4771060da64a4"`
[INFO] running `"docker" "rm" "-f" "f7dae23fa10193421378a4cbaeb581a7f7046581288cc5f772d4771060da64a4"`
[INFO] [stdout] f7dae23fa10193421378a4cbaeb581a7f7046581288cc5f772d4771060da64a4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/coeuvre/rust-2048:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 90748b1283c376da8b87c469950462c4a4213b6c509500cd0f62a4c0d4da1163
[INFO] running `"docker" "start" "-a" "90748b1283c376da8b87c469950462c4a4213b6c509500cd0f62a4c0d4da1163"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_2048-a76503327c0cb964
[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" "90748b1283c376da8b87c469950462c4a4213b6c509500cd0f62a4c0d4da1163"`
[INFO] running `"docker" "rm" "-f" "90748b1283c376da8b87c469950462c4a4213b6c509500cd0f62a4c0d4da1163"`
[INFO] [stdout] 90748b1283c376da8b87c469950462c4a4213b6c509500cd0f62a4c0d4da1163