[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] checking coeuvre/rust-2048 against try#169954edd744527414c631e9af1bbdc537b0cdf2 for pr-75192
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoeuvre%2Frust-2048" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/coeuvre/rust-2048 on toolchain 169954edd744527414c631e9af1bbdc537b0cdf2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "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-0/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" "+169954edd744527414c631e9af1bbdc537b0cdf2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/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[INFO] the lockfile is outdated, regenerating it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" "+169954edd744527414c631e9af1bbdc537b0cdf2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e61e52e86399dd1c9bddf7ea10f8685aee1c58eacc7207b6d2da9e726d13a28
[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" "3e61e52e86399dd1c9bddf7ea10f8685aee1c58eacc7207b6d2da9e726d13a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e61e52e86399dd1c9bddf7ea10f8685aee1c58eacc7207b6d2da9e726d13a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e61e52e86399dd1c9bddf7ea10f8685aee1c58eacc7207b6d2da9e726d13a28", kill_on_drop: false }`
[INFO] [stdout] 3e61e52e86399dd1c9bddf7ea10f8685aee1c58eacc7207b6d2da9e726d13a28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1628d28b8a4bc8c636ce247a1083405e0cae0601bb1114c971cc3c934e9a290c
[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" "1628d28b8a4bc8c636ce247a1083405e0cae0601bb1114c971cc3c934e9a290c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling sdl2-sys v0.27.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.1.0
[INFO] [stderr]    Compiling wayland-scanner v0.7.8
[INFO] [stderr]     Checking gfx_core v0.5.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]    Compiling glutin v0.7.4
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking pistoncore-input v0.15.0
[INFO] [stderr]     Checking piston2d-graphics v0.19.0
[INFO] [stderr]     Checking memmap v0.4.0
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling wayland-client v0.7.8
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]     Checking sdl2 v0.27.3
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]     Checking pistoncore-window v0.24.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.27.0
[INFO] [stderr]     Checking image v0.12.4
[INFO] [stderr]     Checking piston v0.27.0
[INFO] [stderr]     Checking gfx v0.13.0
[INFO] [stderr]     Checking gfx_device_gl v0.12.0
[INFO] [stderr]     Checking pistoncore-sdl2_window v0.38.0
[INFO] [stderr]     Checking piston-gfx_texture v0.20.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.37.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.35.0
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.7.8
[INFO] [stderr]     Checking wayland-kbd v0.6.3
[INFO] [stderr]     Checking wayland-window v0.4.4
[INFO] [stderr]     Checking winit v0.5.11
[INFO] [stderr]     Checking pistoncore-glutin_window v0.33.0
[INFO] [stderr]     Checking piston_window v0.61.0
[INFO] [stderr]     Checking 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: 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] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.40s
[INFO] running `Command { std: "docker" "inspect" "1628d28b8a4bc8c636ce247a1083405e0cae0601bb1114c971cc3c934e9a290c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1628d28b8a4bc8c636ce247a1083405e0cae0601bb1114c971cc3c934e9a290c", kill_on_drop: false }`
[INFO] [stdout] 1628d28b8a4bc8c636ce247a1083405e0cae0601bb1114c971cc3c934e9a290c