[INFO] cloning repository https://github.com/ucsb-coast-lab/rpi_pwm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ucsb-coast-lab/rpi_pwm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fucsb-coast-lab%2Frpi_pwm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fucsb-coast-lab%2Frpi_pwm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1a2279d6b8fbd507c090ff24030d82b7fcc6c4c
[INFO] checking ucsb-coast-lab/rpi_pwm against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fucsb-coast-lab%2Frpi_pwm" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ucsb-coast-lab/rpi_pwm on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/ucsb-coast-lab/rpi_pwm
[INFO] finished tweaking git repo https://github.com/ucsb-coast-lab/rpi_pwm
[INFO] tweaked toml for git repo https://github.com/ucsb-coast-lab/rpi_pwm written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages
[INFO] [stderr]       Adding rppal v0.11.3 (latest: v0.17.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b79970869a83f01b4274ecfe27472bed9037fd1d34af601ea701e736b32a83a9
[INFO] running `Command { std: "docker" "start" "-a" "b79970869a83f01b4274ecfe27472bed9037fd1d34af601ea701e736b32a83a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b79970869a83f01b4274ecfe27472bed9037fd1d34af601ea701e736b32a83a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b79970869a83f01b4274ecfe27472bed9037fd1d34af601ea701e736b32a83a9", kill_on_drop: false }`
[INFO] [stdout] b79970869a83f01b4274ecfe27472bed9037fd1d34af601ea701e736b32a83a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06b9e9d1b6ca6f48c6d61fcbaa83795de3c3ceaadeb1fa68de71f811c4d4c24b
[INFO] running `Command { std: "docker" "start" "-a" "06b9e9d1b6ca6f48c6d61fcbaa83795de3c3ceaadeb1fa68de71f811c4d4c24b", kill_on_drop: false }`
[INFO] [stderr]     Checking rppal v0.11.3
[INFO] [stderr]     Checking simple-signal v1.1.1
[INFO] [stderr]     Checking rpi_pwm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `simple_signal` is imported redundantly
[INFO] [stdout]   --> src/main.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | use simple_signal::{self, Signal};
[INFO] [stdout]    |                     ^^^^ the item `simple_signal` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `simple_signal` is imported redundantly
[INFO] [stdout]   --> src/main.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | use simple_signal::{self, Signal};
[INFO] [stdout]    |                     ^^^^ the item `simple_signal` is already defined by prelude
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "06b9e9d1b6ca6f48c6d61fcbaa83795de3c3ceaadeb1fa68de71f811c4d4c24b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06b9e9d1b6ca6f48c6d61fcbaa83795de3c3ceaadeb1fa68de71f811c4d4c24b", kill_on_drop: false }`
[INFO] [stdout] 06b9e9d1b6ca6f48c6d61fcbaa83795de3c3ceaadeb1fa68de71f811c4d4c24b