[INFO] fetching crate rpi-gpio 0.1.1...
[INFO] building rpi-gpio-0.1.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate rpi-gpio 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rpi-gpio 0.1.1
[INFO] finished tweaking crates.io crate rpi-gpio 0.1.1
[INFO] tweaked toml for crates.io crate rpi-gpio 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rpi-gpio 0.1.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages to latest compatible versions
[INFO] [stderr]       Adding nix v0.13.1 (available: v0.30.1)
[INFO] [stderr]       Adding structopt v0.2.18 (available: v0.3.26)
[INFO] [stderr]       Adding yansi v0.5.1 (available: v1.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.13.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cae869defb6e88ec06f7be749ef7c899f4d18ff01147b1c6286fbd61e26edc60
[INFO] running `Command { std: "docker" "start" "-a" "cae869defb6e88ec06f7be749ef7c899f4d18ff01147b1c6286fbd61e26edc60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cae869defb6e88ec06f7be749ef7c899f4d18ff01147b1c6286fbd61e26edc60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cae869defb6e88ec06f7be749ef7c899f4d18ff01147b1c6286fbd61e26edc60", kill_on_drop: false }`
[INFO] [stdout] cae869defb6e88ec06f7be749ef7c899f4d18ff01147b1c6286fbd61e26edc60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfd7ab559f3b4cc3ce6c3237b95648abb1c1b501d900f6fb9a25dac3ea90d3b3
[INFO] running `Command { std: "docker" "start" "-a" "dfd7ab559f3b4cc3ce6c3237b95648abb1c1b501d900f6fb9a25dac3ea90d3b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling rpi-gpio v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:59:3
[INFO] [stdout]    |
[INFO] [stdout] 59 |         drop(nix::unistd::close(fd));
[INFO] [stdout]    |         ^^^^^----------------------^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `Result<(), nix::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 59 -         drop(nix::unistd::close(fd));
[INFO] [stdout] 59 +         let _ = nix::unistd::close(fd);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 |             drop(mman::munmap(self.control_block, CONTROL_BLOCK_SIZE))
[INFO] [stdout]    |             ^^^^^----------------------------------------------------^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `Result<(), nix::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod lib;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:59:3
[INFO] [stdout]    |
[INFO] [stdout] 59 |         drop(nix::unistd::close(fd));
[INFO] [stdout]    |         ^^^^^----------------------^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `Result<(), nix::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 59 -         drop(nix::unistd::close(fd));
[INFO] [stdout] 59 +         let _ = nix::unistd::close(fd);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 |             drop(mman::munmap(self.control_block, CONTROL_BLOCK_SIZE))
[INFO] [stdout]    |             ^^^^^----------------------------------------------------^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `Result<(), nix::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.14s
[INFO] running `Command { std: "docker" "inspect" "dfd7ab559f3b4cc3ce6c3237b95648abb1c1b501d900f6fb9a25dac3ea90d3b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfd7ab559f3b4cc3ce6c3237b95648abb1c1b501d900f6fb9a25dac3ea90d3b3", kill_on_drop: false }`
[INFO] [stdout] dfd7ab559f3b4cc3ce6c3237b95648abb1c1b501d900f6fb9a25dac3ea90d3b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f98ee465ed2d8f0090f4269a7b93b933755f82634ffcdff65487b3bf9faf060f
[INFO] running `Command { std: "docker" "start" "-a" "f98ee465ed2d8f0090f4269a7b93b933755f82634ffcdff65487b3bf9faf060f", kill_on_drop: false }`
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:59:3
[INFO] [stdout]    |
[INFO] [stdout] 59 |         drop(nix::unistd::close(fd));
[INFO] [stdout]    |         ^^^^^----------------------^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `Result<(), nix::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 59 -         drop(nix::unistd::close(fd));
[INFO] [stdout] 59 +         let _ = nix::unistd::close(fd);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rpi-gpio v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 |             drop(mman::munmap(self.control_block, CONTROL_BLOCK_SIZE))
[INFO] [stdout]    |             ^^^^^----------------------------------------------------^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `Result<(), nix::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod lib;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:59:3
[INFO] [stdout]    |
[INFO] [stdout] 59 |         drop(nix::unistd::close(fd));
[INFO] [stdout]    |         ^^^^^----------------------^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `Result<(), nix::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 59 -         drop(nix::unistd::close(fd));
[INFO] [stdout] 59 +         let _ = nix::unistd::close(fd);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 |             drop(mman::munmap(self.control_block, CONTROL_BLOCK_SIZE))
[INFO] [stdout]    |             ^^^^^----------------------------------------------------^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `Result<(), nix::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:59:3
[INFO] [stdout]    |
[INFO] [stdout] 59 |         drop(nix::unistd::close(fd));
[INFO] [stdout]    |         ^^^^^----------------------^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `Result<(), nix::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 59 -         drop(nix::unistd::close(fd));
[INFO] [stdout] 59 +         let _ = nix::unistd::close(fd);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/lib.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 |             drop(mman::munmap(self.control_block, CONTROL_BLOCK_SIZE))
[INFO] [stdout]    |             ^^^^^----------------------------------------------------^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `Result<(), nix::Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "f98ee465ed2d8f0090f4269a7b93b933755f82634ffcdff65487b3bf9faf060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f98ee465ed2d8f0090f4269a7b93b933755f82634ffcdff65487b3bf9faf060f", kill_on_drop: false }`
[INFO] [stdout] f98ee465ed2d8f0090f4269a7b93b933755f82634ffcdff65487b3bf9faf060f
