[INFO] fetching crate busylight 0.1.0...
[INFO] checking busylight-0.1.0 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate busylight 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate busylight 0.1.0 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-10/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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "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] 9b4e284c09cea560c1d205183ae193b9f858165629f58bdebc59727ae0c9cc02
[INFO] running `Command { std: "docker" "start" "-a" "9b4e284c09cea560c1d205183ae193b9f858165629f58bdebc59727ae0c9cc02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b4e284c09cea560c1d205183ae193b9f858165629f58bdebc59727ae0c9cc02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b4e284c09cea560c1d205183ae193b9f858165629f58bdebc59727ae0c9cc02", kill_on_drop: false }`
[INFO] [stdout] 9b4e284c09cea560c1d205183ae193b9f858165629f58bdebc59727ae0c9cc02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f62b98f143ab5ac8734c5b78ff9c8a732e808aab4e74fdebb56aa2cd9755fb53
[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" "f62b98f143ab5ac8734c5b78ff9c8a732e808aab4e74fdebb56aa2cd9755fb53", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling memchr v2.2.1
[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]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking aho-corasick v0.7.6
[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: field is never read: `keep_alive_guard`
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     keep_alive_guard: Guard,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `keep_alive_guard`
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     keep_alive_guard: Guard,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.84s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f62b98f143ab5ac8734c5b78ff9c8a732e808aab4e74fdebb56aa2cd9755fb53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f62b98f143ab5ac8734c5b78ff9c8a732e808aab4e74fdebb56aa2cd9755fb53", kill_on_drop: false }`
[INFO] [stdout] f62b98f143ab5ac8734c5b78ff9c8a732e808aab4e74fdebb56aa2cd9755fb53