[INFO] cloning repository https://github.com/MitchellBerend/test-rust-project
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MitchellBerend/test-rust-project" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMitchellBerend%2Ftest-rust-project", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMitchellBerend%2Ftest-rust-project'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f5b97d4aff416ef5b36d51d4a9bde689b6906f24
[INFO] checking MitchellBerend/test-rust-project against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMitchellBerend%2Ftest-rust-project" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MitchellBerend/test-rust-project
[INFO] finished tweaking git repo https://github.com/MitchellBerend/test-rust-project
[INFO] tweaked toml for git repo https://github.com/MitchellBerend/test-rust-project written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MitchellBerend/test-rust-project on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MitchellBerend/test-rust-project 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" "+52995a223f2919dd3e2e427231db90a257350ded" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] befb56d7ff5cf2b09d90fb4ee044011da67b162488eb41a060c406b05853684c
[INFO] running `Command { std: "docker" "start" "befb56d7ff5cf2b09d90fb4ee044011da67b162488eb41a060c406b05853684c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "befb56d7ff5cf2b09d90fb4ee044011da67b162488eb41a060c406b05853684c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "befb56d7ff5cf2b09d90fb4ee044011da67b162488eb41a060c406b05853684c" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "befb56d7ff5cf2b09d90fb4ee044011da67b162488eb41a060c406b05853684c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "befb56d7ff5cf2b09d90fb4ee044011da67b162488eb41a060c406b05853684c" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.13.5
[INFO] [stderr]    Compiling libc v0.2.184
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling pyo3-build-config v0.27.2
[INFO] [stderr]    Compiling pyo3-macros-backend v0.27.2
[INFO] [stderr]    Compiling pyo3-ffi v0.27.2
[INFO] [stderr]    Compiling pyo3 v0.27.2
[INFO] [stderr]    Compiling pyo3-macros v0.27.2
[INFO] [stderr]     Checking test-rust-project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `PyErr`
[INFO] [stdout]  --> src/lib.rs:8:39
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn add_numbers(a: i64, b: i64) -> PyResult<i64> {
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]   = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `test-rust-project` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `PyErr`
[INFO] [stdout]  --> src/lib.rs:8:39
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn add_numbers(a: i64, b: i64) -> PyResult<i64> {
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]   = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `test-rust-project` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "befb56d7ff5cf2b09d90fb4ee044011da67b162488eb41a060c406b05853684c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "befb56d7ff5cf2b09d90fb4ee044011da67b162488eb41a060c406b05853684c", kill_on_drop: false }`
[INFO] [stdout] befb56d7ff5cf2b09d90fb4ee044011da67b162488eb41a060c406b05853684c