[INFO] fetching crate rpi-gpio 0.1.1...
[INFO] building rpi-gpio-0.1.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate rpi-gpio 0.1.1 into /workspace/builds/worker-3-tc2/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-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rpi-gpio 0.1.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3331c89efe680d06b85fd9cf60ee8f739da55bdf4398bb1e664c4227abdb22a
[INFO] running `Command { std: "docker" "start" "-a" "f3331c89efe680d06b85fd9cf60ee8f739da55bdf4398bb1e664c4227abdb22a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3331c89efe680d06b85fd9cf60ee8f739da55bdf4398bb1e664c4227abdb22a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3331c89efe680d06b85fd9cf60ee8f739da55bdf4398bb1e664c4227abdb22a", kill_on_drop: false }`
[INFO] [stdout] f3331c89efe680d06b85fd9cf60ee8f739da55bdf4398bb1e664c4227abdb22a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 399d1b8989354b7b2d39b7ef686bb27019eddc2ada83294b21924013b2ac60cd
[INFO] running `Command { std: "docker" "start" "-a" "399d1b8989354b7b2d39b7ef686bb27019eddc2ada83294b21924013b2ac60cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling clap v2.34.0
[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 8.98s
[INFO] running `Command { std: "docker" "inspect" "399d1b8989354b7b2d39b7ef686bb27019eddc2ada83294b21924013b2ac60cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "399d1b8989354b7b2d39b7ef686bb27019eddc2ada83294b21924013b2ac60cd", kill_on_drop: false }`
[INFO] [stdout] 399d1b8989354b7b2d39b7ef686bb27019eddc2ada83294b21924013b2ac60cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 258ccf261d3624ea71f3849e72c4f08a5137e7851993eb23b835b3767bb36d62
[INFO] running `Command { std: "docker" "start" "-a" "258ccf261d3624ea71f3849e72c4f08a5137e7851993eb23b835b3767bb36d62", kill_on_drop: false }`
[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] [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 0.65s
[INFO] running `Command { std: "docker" "inspect" "258ccf261d3624ea71f3849e72c4f08a5137e7851993eb23b835b3767bb36d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "258ccf261d3624ea71f3849e72c4f08a5137e7851993eb23b835b3767bb36d62", kill_on_drop: false }`
[INFO] [stdout] 258ccf261d3624ea71f3849e72c4f08a5137e7851993eb23b835b3767bb36d62