[INFO] fetching crate busylight 0.1.0...
[INFO] checking busylight-0.1.0 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] extracting crate busylight 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate busylight 0.1.0 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate busylight 0.1.0
[INFO] finished tweaking crates.io crate busylight 0.1.0
[INFO] tweaked toml for crates.io crate busylight 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate busylight 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pkg-config v0.3.15
[INFO] [stderr]   Downloaded autocfg v0.1.5
[INFO] [stderr]   Downloaded chrono v0.2.25
[INFO] [stderr]   Downloaded chrono v0.4.7
[INFO] [stderr]   Downloaded hidapi v1.0.1
[INFO] [stderr]   Downloaded cc v1.0.40
[INFO] [stderr]   Downloaded regex v1.2.1
[INFO] [stderr]   Downloaded winapi v0.3.7
[INFO] [stderr]   Downloaded regex-syntax v0.6.11
[INFO] [stderr]   Downloaded timer v0.2.0
[INFO] [stderr]   Downloaded color_processing v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "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] 3be89d3617bd273d5c48aec54ebac1ca4f097c992d00d92f7dc045bcb392cf3b
[INFO] running `Command { std: "docker" "start" "-a" "3be89d3617bd273d5c48aec54ebac1ca4f097c992d00d92f7dc045bcb392cf3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3be89d3617bd273d5c48aec54ebac1ca4f097c992d00d92f7dc045bcb392cf3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3be89d3617bd273d5c48aec54ebac1ca4f097c992d00d92f7dc045bcb392cf3b", kill_on_drop: false }`
[INFO] [stdout] 3be89d3617bd273d5c48aec54ebac1ca4f097c992d00d92f7dc045bcb392cf3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76ebe23c7e743b4a1d35c2a0a805f54010c6532f7517f0a1b6188441185015a3
[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" "76ebe23c7e743b4a1d35c2a0a805f54010c6532f7517f0a1b6188441185015a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]    Compiling cc v1.0.40
[INFO] [stderr]     Checking regex-syntax v0.6.11
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling hidapi v1.0.1
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking regex v1.2.1
[INFO] [stderr]     Checking timer v0.2.0
[INFO] [stderr]     Checking color_processing v0.3.1
[INFO] [stderr]     Checking busylight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Positions`
[INFO] [stdout]  --> examples/ring.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use busylight::{BusyLight, Tones, Positions};
[INFO] [stdout]   |                                   ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.42s
[INFO] running `Command { std: "docker" "inspect" "76ebe23c7e743b4a1d35c2a0a805f54010c6532f7517f0a1b6188441185015a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76ebe23c7e743b4a1d35c2a0a805f54010c6532f7517f0a1b6188441185015a3", kill_on_drop: false }`
[INFO] [stdout] 76ebe23c7e743b4a1d35c2a0a805f54010c6532f7517f0a1b6188441185015a3