[INFO] fetching crate piston-button_tracker 0.14.0...
[INFO] checking piston-button_tracker-0.14.0 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate piston-button_tracker 0.14.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate piston-button_tracker 0.14.0 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate piston-button_tracker 0.14.0
[INFO] finished tweaking crates.io crate piston-button_tracker 0.14.0
[INFO] tweaked toml for crates.io crate piston-button_tracker 0.14.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6a94fd2c9bf63b5658be22b9a201b1ee1fa821921ff3d0885e5c88b7ec4a8b55
[INFO] running `Command { std: "docker" "start" "-a" "6a94fd2c9bf63b5658be22b9a201b1ee1fa821921ff3d0885e5c88b7ec4a8b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a94fd2c9bf63b5658be22b9a201b1ee1fa821921ff3d0885e5c88b7ec4a8b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a94fd2c9bf63b5658be22b9a201b1ee1fa821921ff3d0885e5c88b7ec4a8b55", kill_on_drop: false }`
[INFO] [stdout] 6a94fd2c9bf63b5658be22b9a201b1ee1fa821921ff3d0885e5c88b7ec4a8b55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 141ee6891f9d273e3b82b23f21a288f3b53188011bb1079cad30ce0a675797a7
[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" "141ee6891f9d273e3b82b23f21a288f3b53188011bb1079cad30ce0a675797a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking piston-float v1.0.0
[INFO] [stderr]     Checking piston-viewport v1.0.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking pistoncore-input v1.0.0
[INFO] [stderr]     Checking piston-button_tracker v0.14.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.29s
[INFO] running `Command { std: "docker" "inspect" "141ee6891f9d273e3b82b23f21a288f3b53188011bb1079cad30ce0a675797a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "141ee6891f9d273e3b82b23f21a288f3b53188011bb1079cad30ce0a675797a7", kill_on_drop: false }`
[INFO] [stdout] 141ee6891f9d273e3b82b23f21a288f3b53188011bb1079cad30ce0a675797a7