[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 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fustulation%2Fffi-trait-poc" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ustulation/ffi-trait-poc on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-6/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" "+1.60.0" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c03f90a4adcc3c69e0acef2576609194c5dfaaf6dd695d69dcade36a797f2ba2
[INFO] running `Command { std: "docker" "start" "-a" "c03f90a4adcc3c69e0acef2576609194c5dfaaf6dd695d69dcade36a797f2ba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c03f90a4adcc3c69e0acef2576609194c5dfaaf6dd695d69dcade36a797f2ba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c03f90a4adcc3c69e0acef2576609194c5dfaaf6dd695d69dcade36a797f2ba2", kill_on_drop: false }`
[INFO] [stdout] c03f90a4adcc3c69e0acef2576609194c5dfaaf6dd695d69dcade36a797f2ba2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4c486899b697ff2db4ecc6df1e3b30b12f320c8afeb23b0603052298be4e344
[INFO] running `Command { std: "docker" "start" "-a" "d4c486899b697ff2db4ecc6df1e3b30b12f320c8afeb23b0603052298be4e344", 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 20.90s
[INFO] running `Command { std: "docker" "inspect" "d4c486899b697ff2db4ecc6df1e3b30b12f320c8afeb23b0603052298be4e344", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4c486899b697ff2db4ecc6df1e3b30b12f320c8afeb23b0603052298be4e344", kill_on_drop: false }`
[INFO] [stdout] d4c486899b697ff2db4ecc6df1e3b30b12f320c8afeb23b0603052298be4e344
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4a5df71b127c0f5c8eae3fccd68f4016f8620ab98578ebb8259eb0c03f54698
[INFO] running `Command { std: "docker" "start" "-a" "a4a5df71b127c0f5c8eae3fccd68f4016f8620ab98578ebb8259eb0c03f54698", 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 0.54s
[INFO] running `Command { std: "docker" "inspect" "a4a5df71b127c0f5c8eae3fccd68f4016f8620ab98578ebb8259eb0c03f54698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4a5df71b127c0f5c8eae3fccd68f4016f8620ab98578ebb8259eb0c03f54698", kill_on_drop: false }`
[INFO] [stdout] a4a5df71b127c0f5c8eae3fccd68f4016f8620ab98578ebb8259eb0c03f54698
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 68bf1e2a0e17ae2a3028ca4432cedf8ab1cca9b3896afa855f0ea77507bd81ff
[INFO] running `Command { std: "docker" "start" "-a" "68bf1e2a0e17ae2a3028ca4432cedf8ab1cca9b3896afa855f0ea77507bd81ff", 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 0.69s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ffi_trait_poc-f22cac1deca0c72c)
[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" "68bf1e2a0e17ae2a3028ca4432cedf8ab1cca9b3896afa855f0ea77507bd81ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68bf1e2a0e17ae2a3028ca4432cedf8ab1cca9b3896afa855f0ea77507bd81ff", kill_on_drop: false }`
[INFO] [stdout] 68bf1e2a0e17ae2a3028ca4432cedf8ab1cca9b3896afa855f0ea77507bd81ff