[INFO] cloning repository https://github.com/ustulation/ffi-trait-poc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ustulation/ffi-trait-poc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fustulation%2Fffi-trait-poc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fustulation%2Fffi-trait-poc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d131d9f948fbc7162c6938698dff20043949199
[INFO] testing ustulation/ffi-trait-poc against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fustulation%2Fffi-trait-poc" "/workspace/builds/worker-52/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-52/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ustulation/ffi-trait-poc on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ustulation/ffi-trait-poc
[INFO] finished tweaking git repo https://github.com/ustulation/ffi-trait-poc
[INFO] tweaked toml for git repo https://github.com/ustulation/ffi-trait-poc written to /workspace/builds/worker-52/source/Cargo.toml
[INFO] crate git repo https://github.com/ustulation/ffi-trait-poc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52a3dfbac41abf524ad44981f742858690db5e93e0238ce96f525148ee46d355
[INFO] running `Command { std: "docker" "start" "-a" "52a3dfbac41abf524ad44981f742858690db5e93e0238ce96f525148ee46d355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52a3dfbac41abf524ad44981f742858690db5e93e0238ce96f525148ee46d355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52a3dfbac41abf524ad44981f742858690db5e93e0238ce96f525148ee46d355", kill_on_drop: false }`
[INFO] [stdout] 52a3dfbac41abf524ad44981f742858690db5e93e0238ce96f525148ee46d355
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 622bb53c35092853be5bcdaaae1ed008435b7479469ec732a67b8298ec429826
[INFO] running `Command { std: "docker" "start" "-a" "622bb53c35092853be5bcdaaae1ed008435b7479469ec732a67b8298ec429826", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ffi-trait-poc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/main.rs:46:14
[INFO] [stdout]    |
[INFO] [stdout] 46 |     type C = (*mut c_char);
[INFO] [stdout]    |              ^           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 46 -     type C = (*mut c_char);
[INFO] [stdout] 46 +     type C = *mut c_char;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |         Ok((CString::new(self)?.into_raw()))
[INFO] [stdout]    |            ^                              ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 56 -         Ok((CString::new(self)?.into_raw()))
[INFO] [stdout] 56 +         Ok(CString::new(self)?.into_raw())
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "622bb53c35092853be5bcdaaae1ed008435b7479469ec732a67b8298ec429826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "622bb53c35092853be5bcdaaae1ed008435b7479469ec732a67b8298ec429826", kill_on_drop: false }`
[INFO] [stdout] 622bb53c35092853be5bcdaaae1ed008435b7479469ec732a67b8298ec429826
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 276dde8c9fe4618a7f9b8df97f3f43521223793cc8f5e726585f0a7d04744ce9
[INFO] running `Command { std: "docker" "start" "-a" "276dde8c9fe4618a7f9b8df97f3f43521223793cc8f5e726585f0a7d04744ce9", kill_on_drop: false }`
[INFO] [stderr]    Compiling ffi-trait-poc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/main.rs:46:14
[INFO] [stdout]    |
[INFO] [stdout] 46 |     type C = (*mut c_char);
[INFO] [stdout]    |              ^           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 46 -     type C = (*mut c_char);
[INFO] [stdout] 46 +     type C = *mut c_char;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |         Ok((CString::new(self)?.into_raw()))
[INFO] [stdout]    |            ^                              ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 56 -         Ok((CString::new(self)?.into_raw()))
[INFO] [stdout] 56 +         Ok(CString::new(self)?.into_raw())
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "276dde8c9fe4618a7f9b8df97f3f43521223793cc8f5e726585f0a7d04744ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "276dde8c9fe4618a7f9b8df97f3f43521223793cc8f5e726585f0a7d04744ce9", kill_on_drop: false }`
[INFO] [stdout] 276dde8c9fe4618a7f9b8df97f3f43521223793cc8f5e726585f0a7d04744ce9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 833c0f0c45434d9e7973593d750ed529b7bb46f1a6e31dcf3da083129080212d
[INFO] running `Command { std: "docker" "start" "-a" "833c0f0c45434d9e7973593d750ed529b7bb46f1a6e31dcf3da083129080212d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/main.rs:46:14
[INFO] [stderr]    |
[INFO] [stderr] 46 |     type C = (*mut c_char);
[INFO] [stderr]    |              ^           ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 46 -     type C = (*mut c_char);
[INFO] [stderr] 46 +     type C = *mut c_char;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/main.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 56 |         Ok((CString::new(self)?.into_raw()))
[INFO] [stderr]    |            ^                              ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 56 -         Ok((CString::new(self)?.into_raw()))
[INFO] [stderr] 56 +         Ok(CString::new(self)?.into_raw())
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `ffi-trait-poc` (bin "ffi-trait-poc" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ffi_trait_poc-f521bcbceaa60489)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "833c0f0c45434d9e7973593d750ed529b7bb46f1a6e31dcf3da083129080212d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "833c0f0c45434d9e7973593d750ed529b7bb46f1a6e31dcf3da083129080212d", kill_on_drop: false }`
[INFO] [stdout] 833c0f0c45434d9e7973593d750ed529b7bb46f1a6e31dcf3da083129080212d