[INFO] cloning repository https://github.com/nokute78/rust-ffi-study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nokute78/rust-ffi-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnokute78%2Frust-ffi-study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnokute78%2Frust-ffi-study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49847e26ab151b28eb39f73acf9151b48e2b2753
[INFO] checking nokute78/rust-ffi-study against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnokute78%2Frust-ffi-study" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nokute78/rust-ffi-study on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nokute78/rust-ffi-study
[INFO] finished tweaking git repo https://github.com/nokute78/rust-ffi-study
[INFO] tweaked toml for git repo https://github.com/nokute78/rust-ffi-study written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/nokute78/rust-ffi-study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffaef5952e2cc9f642c742a5cae9955df757af34e3e0909bd67b97ccf7e0ec7d
[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" "ffaef5952e2cc9f642c742a5cae9955df757af34e3e0909bd67b97ccf7e0ec7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffaef5952e2cc9f642c742a5cae9955df757af34e3e0909bd67b97ccf7e0ec7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffaef5952e2cc9f642c742a5cae9955df757af34e3e0909bd67b97ccf7e0ec7d", kill_on_drop: false }`
[INFO] [stdout] ffaef5952e2cc9f642c742a5cae9955df757af34e3e0909bd67b97ccf7e0ec7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1c4a2bf8e3cef3d1c9ca0321c1a30bd1b7c7418631798645a6b16e9d67f0c15
[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" "b1c4a2bf8e3cef3d1c9ca0321c1a30bd1b7c7418631798645a6b16e9d67f0c15", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cc v1.0.42
[INFO] [stderr]    Compiling rust-ffi-study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ptr::copy`
[INFO] [stdout]   --> src/string.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::ptr::copy;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::libc`
[INFO] [stdout]   --> src/float.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     use super::libc;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr::copy`
[INFO] [stdout]   --> src/string.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::ptr::copy;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EVEN`
[INFO] [stdout]   --> src/integer.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     EVEN = 10,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ODD`
[INFO] [stdout]   --> src/integer.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     ODD,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EVEN`
[INFO] [stdout]   --> src/integer.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     EVEN = 10,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ODD`
[INFO] [stdout]   --> src/integer.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     ODD,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.96s
[INFO] running `Command { std: "docker" "inspect" "b1c4a2bf8e3cef3d1c9ca0321c1a30bd1b7c7418631798645a6b16e9d67f0c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1c4a2bf8e3cef3d1c9ca0321c1a30bd1b7c7418631798645a6b16e9d67f0c15", kill_on_drop: false }`
[INFO] [stdout] b1c4a2bf8e3cef3d1c9ca0321c1a30bd1b7c7418631798645a6b16e9d67f0c15