[INFO] updating cached repository https://github.com/memchk/LedDesk
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 96637a3e3f2ce4813f8ba9b58a95fd4d34ea9336
[INFO] checking memchk/LedDesk against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmemchk%2FLedDesk" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/memchk/LedDesk on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/memchk/LedDesk
[INFO] finished tweaking git repo https://github.com/memchk/LedDesk
[INFO] tweaked toml for git repo https://github.com/memchk/LedDesk written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/memchk/LedDesk already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e41ba54e12aec1b87c860febf9f94e8f563dfa334c611f004b2b1175f0aaa1fb
[INFO] running `"docker" "start" "-a" "e41ba54e12aec1b87c860febf9f94e8f563dfa334c611f004b2b1175f0aaa1fb"`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling cpal v0.10.0 (https://github.com/RustAudio/cpal#90be5244)
[INFO] [stderr]     Checking strength_reduce v0.2.1
[INFO] [stderr]     Checking transpose v0.1.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling alsa-sys v0.1.1 (https://github.com/RustAudio/cpal#90be5244)
[INFO] [stderr]     Checking nix v0.12.0
[INFO] [stderr]     Checking libudev-sys v0.1.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]     Checking rustfft v3.0.0
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking crossbeam v0.7.1
[INFO] [stderr]     Checking thiserror v1.0.5
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking serialport v3.2.0
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]     Checking fft_desk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.59s
[INFO] running `"docker" "inspect" "e41ba54e12aec1b87c860febf9f94e8f563dfa334c611f004b2b1175f0aaa1fb"`
[INFO] running `"docker" "rm" "-f" "e41ba54e12aec1b87c860febf9f94e8f563dfa334c611f004b2b1175f0aaa1fb"`
[INFO] [stdout] e41ba54e12aec1b87c860febf9f94e8f563dfa334c611f004b2b1175f0aaa1fb