[INFO] cloning repository https://github.com/coeuvre/rust-2048
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/coeuvre/rust-2048" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoeuvre%2Frust-2048", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoeuvre%2Frust-2048'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9318fefff673888ce11098a37f7c95dd7dbbbfda
[INFO] testing coeuvre/rust-2048 against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoeuvre%2Frust-2048" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/coeuvre/rust-2048 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/coeuvre/rust-2048
[INFO] finished tweaking git repo https://github.com/coeuvre/rust-2048
[INFO] tweaked toml for git repo https://github.com/coeuvre/rust-2048 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/coeuvre/rust-2048 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-12/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac1a0df42ab00b027b965d1c38f060d6100c70432f097f132c2e21c03f1e8778
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ac1a0df42ab00b027b965d1c38f060d6100c70432f097f132c2e21c03f1e8778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac1a0df42ab00b027b965d1c38f060d6100c70432f097f132c2e21c03f1e8778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac1a0df42ab00b027b965d1c38f060d6100c70432f097f132c2e21c03f1e8778", kill_on_drop: false }`
[INFO] [stdout] ac1a0df42ab00b027b965d1c38f060d6100c70432f097f132c2e21c03f1e8778
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a593a1704aadc462929aa127d32af888799b63e9cf050b6983f5da847649811
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4a593a1704aadc462929aa127d32af888799b63e9cf050b6983f5da847649811", kill_on_drop: false }`
[INFO] [stderr]    Compiling piston-float v0.2.0
[INFO] [stderr]    Compiling khronos_api v1.0.1
[INFO] [stderr]    Compiling shader_version v0.2.2
[INFO] [stderr]    Compiling bitflags v0.6.0
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling inflate v0.1.1
[INFO] [stderr]    Compiling piston-texture v0.5.0
[INFO] [stderr]    Compiling sdl2-sys v0.27.3
[INFO] [stderr]    Compiling read_color v0.1.0
[INFO] [stderr]    Compiling piston-shaders_graphics2d v0.2.1
[INFO] [stderr]    Compiling piston-shaders_graphics2d v0.1.0
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling xml-rs v0.3.6
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling piston-viewport v0.2.0
[INFO] [stderr]    Compiling vecmath v0.2.0
[INFO] [stderr]    Compiling draw_state v0.6.0
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling tempfile v2.2.0
[INFO] [stderr]    Compiling gl_generator v0.5.5
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling gif v0.9.2
[INFO] [stderr]    Compiling pistoncore-input v0.15.0
[INFO] [stderr]    Compiling memmap v0.4.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling stb_truetype v0.2.8
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling piston2d-graphics v0.19.0
[INFO] [stderr]    Compiling rusttype v0.2.4
[INFO] [stderr]    Compiling gfx_core v0.5.1
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling gl_generator v0.6.1
[INFO] [stderr]    Compiling png v0.6.2
[INFO] [stderr]    Compiling sdl2 v0.27.3
[INFO] [stderr]    Compiling wayland-scanner v0.7.8
[INFO] [stderr]    Compiling pistoncore-window v0.24.0
[INFO] [stderr]    Compiling pistoncore-event_loop v0.27.0
[INFO] [stderr]    Compiling gfx_gl v0.3.1
[INFO] [stderr]    Compiling glutin v0.7.4
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling wayland-client v0.7.8
[INFO] [stderr]    Compiling piston v0.27.0
[INFO] [stderr]    Compiling gl v0.6.5
[INFO] [stderr]    Compiling gfx v0.13.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling image v0.12.4
[INFO] [stderr]    Compiling gfx_device_gl v0.12.0
[INFO] [stderr]    Compiling pistoncore-sdl2_window v0.38.0
[INFO] [stderr]    Compiling piston-gfx_texture v0.20.0
[INFO] [stderr]    Compiling piston2d-opengl_graphics v0.37.0
[INFO] [stderr]    Compiling piston2d-gfx_graphics v0.35.0
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]    Compiling dlib v0.3.1
[INFO] [stderr]    Compiling wayland-sys v0.7.8
[INFO] [stderr]    Compiling wayland-window v0.4.4
[INFO] [stderr]    Compiling wayland-kbd v0.6.3
[INFO] [stderr]    Compiling winit v0.5.11
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.33.0
[INFO] [stderr]    Compiling piston_window v0.61.0
[INFO] [stderr]    Compiling rust-2048 v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Key` is imported redundantly
[INFO] [stdout]    --> src/app.rs:108:7
[INFO] [stdout]     |
[INFO] [stdout] 3   | use piston_window::*;
[INFO] [stdout]     |     ---------------- the item `Key` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 108 |         use piston_window::Key;        
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Encodable`
[INFO] [stdout]  --> src/settings.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rustc_serialize::{ json, Encodable, Decodable };
[INFO] [stdout]   |                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 16s
[INFO] running `Command { std: "docker" "inspect" "4a593a1704aadc462929aa127d32af888799b63e9cf050b6983f5da847649811", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a593a1704aadc462929aa127d32af888799b63e9cf050b6983f5da847649811", kill_on_drop: false }`
[INFO] [stdout] 4a593a1704aadc462929aa127d32af888799b63e9cf050b6983f5da847649811
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a58f28107adfd77a2d257e1f0673beb8a71d1acff38d6a099cdbbf6a20662cf5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a58f28107adfd77a2d257e1f0673beb8a71d1acff38d6a099cdbbf6a20662cf5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-2048 v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Key` is imported redundantly
[INFO] [stdout]    --> src/app.rs:108:7
[INFO] [stdout]     |
[INFO] [stdout] 3   | use piston_window::*;
[INFO] [stdout]     |     ---------------- the item `Key` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 108 |         use piston_window::Key;        
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Encodable`
[INFO] [stdout]  --> src/settings.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rustc_serialize::{ json, Encodable, Decodable };
[INFO] [stdout]   |                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "a58f28107adfd77a2d257e1f0673beb8a71d1acff38d6a099cdbbf6a20662cf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a58f28107adfd77a2d257e1f0673beb8a71d1acff38d6a099cdbbf6a20662cf5", kill_on_drop: false }`
[INFO] [stdout] a58f28107adfd77a2d257e1f0673beb8a71d1acff38d6a099cdbbf6a20662cf5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 708d802d4bb041d6e6fdedf080ff045b32250da93468884f41930027a4fead42
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "708d802d4bb041d6e6fdedf080ff045b32250da93468884f41930027a4fead42", kill_on_drop: false }`
[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] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_2048-a50bfde92eafc37f
[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 `Command { std: "docker" "inspect" "708d802d4bb041d6e6fdedf080ff045b32250da93468884f41930027a4fead42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "708d802d4bb041d6e6fdedf080ff045b32250da93468884f41930027a4fead42", kill_on_drop: false }`
[INFO] [stdout] 708d802d4bb041d6e6fdedf080ff045b32250da93468884f41930027a4fead42