[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#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fustulation%2Fffi-trait-poc" "/workspace/builds/worker-84/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-84/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ustulation/ffi-trait-poc on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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-84/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" "+b70888601af92f6cdc0364abab3446e418b91d36" "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-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 125d27231aee3a66d6c1f72ee3c33ce881e3f1d1dff34bfe8fcda8f58a99c43c
[INFO] running `Command { std: "docker" "start" "-a" "125d27231aee3a66d6c1f72ee3c33ce881e3f1d1dff34bfe8fcda8f58a99c43c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "125d27231aee3a66d6c1f72ee3c33ce881e3f1d1dff34bfe8fcda8f58a99c43c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "125d27231aee3a66d6c1f72ee3c33ce881e3f1d1dff34bfe8fcda8f58a99c43c", kill_on_drop: false }`
[INFO] [stdout] 125d27231aee3a66d6c1f72ee3c33ce881e3f1d1dff34bfe8fcda8f58a99c43c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bbc46f1e61e62f8f41b759225676adfab5228aba961fc8dfe157c76e3f61609
[INFO] running `Command { std: "docker" "start" "-a" "0bbc46f1e61e62f8f41b759225676adfab5228aba961fc8dfe157c76e3f61609", 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]    |              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[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]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "0bbc46f1e61e62f8f41b759225676adfab5228aba961fc8dfe157c76e3f61609", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bbc46f1e61e62f8f41b759225676adfab5228aba961fc8dfe157c76e3f61609", kill_on_drop: false }`
[INFO] [stdout] 0bbc46f1e61e62f8f41b759225676adfab5228aba961fc8dfe157c76e3f61609
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34bcee231bae03175196f314fb08cfd95dfe338c56a960c02fc2501fb343822c
[INFO] running `Command { std: "docker" "start" "-a" "34bcee231bae03175196f314fb08cfd95dfe338c56a960c02fc2501fb343822c", 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]    |              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[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]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "34bcee231bae03175196f314fb08cfd95dfe338c56a960c02fc2501fb343822c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34bcee231bae03175196f314fb08cfd95dfe338c56a960c02fc2501fb343822c", kill_on_drop: false }`
[INFO] [stdout] 34bcee231bae03175196f314fb08cfd95dfe338c56a960c02fc2501fb343822c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 47e9b6cea636c418e281b03d00ecc9fc45adc641123b03cf04a8a5a0c2c892c8
[INFO] running `Command { std: "docker" "start" "-a" "47e9b6cea636c418e281b03d00ecc9fc45adc641123b03cf04a8a5a0c2c892c8", kill_on_drop: false }`
[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]    |              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[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]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[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 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ffi_trait_poc-e7a20a43b7b6b50e)
[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" "47e9b6cea636c418e281b03d00ecc9fc45adc641123b03cf04a8a5a0c2c892c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47e9b6cea636c418e281b03d00ecc9fc45adc641123b03cf04a8a5a0c2c892c8", kill_on_drop: false }`
[INFO] [stdout] 47e9b6cea636c418e281b03d00ecc9fc45adc641123b03cf04a8a5a0c2c892c8