[INFO] fetching crate gpio-rust 0.1.4...
[INFO] checking gpio-rust-0.1.4 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate gpio-rust 0.1.4 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate gpio-rust 0.1.4 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-13/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate gpio-rust 0.1.4
[INFO] finished tweaking crates.io crate gpio-rust 0.1.4
[INFO] tweaked toml for crates.io crate gpio-rust 0.1.4 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded inline-python-macros v0.5.3
[INFO] [stderr]   Downloaded inline-python v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "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] 6edbfef76ac994c18c009e5b21352c2e9a50b276dff368c2f1a52b2e318e277f
[INFO] running `Command { std: "docker" "start" "-a" "6edbfef76ac994c18c009e5b21352c2e9a50b276dff368c2f1a52b2e318e277f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6edbfef76ac994c18c009e5b21352c2e9a50b276dff368c2f1a52b2e318e277f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6edbfef76ac994c18c009e5b21352c2e9a50b276dff368c2f1a52b2e318e277f", kill_on_drop: false }`
[INFO] [stdout] 6edbfef76ac994c18c009e5b21352c2e9a50b276dff368c2f1a52b2e318e277f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f123023193f8350cce763d7f99cfb21764b2c6672ad4f34571466ec986e2ac21
[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" "f123023193f8350cce763d7f99cfb21764b2c6672ad4f34571466ec986e2ac21", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling pyo3 v0.11.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling inline-python-macros v0.5.3
[INFO] [stderr]     Checking inline-python v0.6.0
[INFO] [stderr]     Checking gpio-rust v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/lib.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |             Err(msg) => {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         gpio::turn_on(18);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         gpio::turn_off(18);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.87s
[INFO] running `Command { std: "docker" "inspect" "f123023193f8350cce763d7f99cfb21764b2c6672ad4f34571466ec986e2ac21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f123023193f8350cce763d7f99cfb21764b2c6672ad4f34571466ec986e2ac21", kill_on_drop: false }`
[INFO] [stdout] f123023193f8350cce763d7f99cfb21764b2c6672ad4f34571466ec986e2ac21