[INFO] cloning repository https://github.com/jdavidagudelo/cffi-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jdavidagudelo/cffi-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdavidagudelo%2Fcffi-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdavidagudelo%2Fcffi-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11ca6c043394866b569d68aed4af0185789cadc0
[INFO] checking jdavidagudelo/cffi-rust/11ca6c043394866b569d68aed4af0185789cadc0 against master#8387315ab3c26a57a1f53a90f188f0bc88514bca for pr-124605
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdavidagudelo%2Fcffi-rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jdavidagudelo/cffi-rust on toolchain 8387315ab3c26a57a1f53a90f188f0bc88514bca
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8387315ab3c26a57a1f53a90f188f0bc88514bca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jdavidagudelo/cffi-rust
[INFO] finished tweaking git repo https://github.com/jdavidagudelo/cffi-rust
[INFO] tweaked toml for git repo https://github.com/jdavidagudelo/cffi-rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jdavidagudelo/cffi-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8387315ab3c26a57a1f53a90f188f0bc88514bca" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+8387315ab3c26a57a1f53a90f188f0bc88514bca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5868ca84228e704ec4b0982a806a2b03cef5bb05aab255761b3ac835a47e7bf9
[INFO] running `Command { std: "docker" "start" "-a" "5868ca84228e704ec4b0982a806a2b03cef5bb05aab255761b3ac835a47e7bf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5868ca84228e704ec4b0982a806a2b03cef5bb05aab255761b3ac835a47e7bf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5868ca84228e704ec4b0982a806a2b03cef5bb05aab255761b3ac835a47e7bf9", kill_on_drop: false }`
[INFO] [stdout] 5868ca84228e704ec4b0982a806a2b03cef5bb05aab255761b3ac835a47e7bf9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+8387315ab3c26a57a1f53a90f188f0bc88514bca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20ee1552e6cd5f1eccea3d344eb98f59ca853034b194acc4c1b4c9630453b03a
[INFO] running `Command { std: "docker" "start" "-a" "20ee1552e6cd5f1eccea3d344eb98f59ca853034b194acc4c1b4c9630453b03a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]     Checking cffi_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `c_uint`
[INFO] [stdout]  --> src/lib.rs:2:47
[INFO] [stdout]   |
[INFO] [stdout] 2 | use libc::{c_char, uint32_t, uint8_t, size_t, c_uint};
[INFO] [stdout]   |                                               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `c_uint`
[INFO] [stdout]  --> src/lib.rs:2:47
[INFO] [stdout]   |
[INFO] [stdout] 2 | use libc::{c_char, uint32_t, uint8_t, size_t, c_uint};
[INFO] [stdout]   |                                               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/lib.rs:45:14
[INFO] [stdout]    |
[INFO] [stdout] 45 |     unsafe { Box::from_raw(ptr); }
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 45 |     unsafe { let _ = Box::from_raw(ptr); }
[INFO] [stdout]    |              +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `CString::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |         CString::from_raw(s)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(from_raw(ptr))` if you intend to drop the `CString`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let _ = CString::from_raw(s);
[INFO] [stdout]     |         +++++++                     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/lib.rs:45:14
[INFO] [stdout]    |
[INFO] [stdout] 45 |     unsafe { Box::from_raw(ptr); }
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 45 |     unsafe { let _ = Box::from_raw(ptr); }
[INFO] [stdout]    |              +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:193:14
[INFO] [stdout]     |
[INFO] [stdout] 193 |     unsafe { Box::from_raw(ptr); }
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 193 |     unsafe { let _ = Box::from_raw(ptr); }
[INFO] [stdout]     |              +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `CString::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |         CString::from_raw(s)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(from_raw(ptr))` if you intend to drop the `CString`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 153 |         let _ = CString::from_raw(s);
[INFO] [stdout]     |         +++++++                     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:193:14
[INFO] [stdout]     |
[INFO] [stdout] 193 |     unsafe { Box::from_raw(ptr); }
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 193 |     unsafe { let _ = Box::from_raw(ptr); }
[INFO] [stdout]     |              +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "20ee1552e6cd5f1eccea3d344eb98f59ca853034b194acc4c1b4c9630453b03a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20ee1552e6cd5f1eccea3d344eb98f59ca853034b194acc4c1b4c9630453b03a", kill_on_drop: false }`
[INFO] [stdout] 20ee1552e6cd5f1eccea3d344eb98f59ca853034b194acc4c1b4c9630453b03a