[INFO] cloning repository https://github.com/kwip-info/traversal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kwip-info/traversal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkwip-info%2Ftraversal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkwip-info%2Ftraversal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2c2589481c51247451dec222717a54e4fbe4e11
[INFO] checking kwip-info/traversal against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkwip-info%2Ftraversal" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kwip-info/traversal
[INFO] finished tweaking git repo https://github.com/kwip-info/traversal
[INFO] tweaked toml for git repo https://github.com/kwip-info/traversal written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kwip-info/traversal 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/kwip-info/traversal 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-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f4fe03987a72c9b07b18a53f835621d4381adf8d08cb18ae1a372f45d14957ae
[INFO] running `Command { std: "docker" "start" "f4fe03987a72c9b07b18a53f835621d4381adf8d08cb18ae1a372f45d14957ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4fe03987a72c9b07b18a53f835621d4381adf8d08cb18ae1a372f45d14957ae", 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" "f4fe03987a72c9b07b18a53f835621d4381adf8d08cb18ae1a372f45d14957ae" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4fe03987a72c9b07b18a53f835621d4381adf8d08cb18ae1a372f45d14957ae", 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" "f4fe03987a72c9b07b18a53f835621d4381adf8d08cb18ae1a372f45d14957ae" "/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 proc-macro2 v1.0.107
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling libc v0.2.189
[INFO] [stderr]     Checking traversal-core v0.2.0 (/opt/rustwide/workdir/crates/traversal-core)
[INFO] [stderr]    Compiling pyo3-build-config v0.29.2
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling pyo3-ffi v0.29.2
[INFO] [stderr]    Compiling pyo3 v0.29.2
[INFO] [stderr]    Compiling pyo3-macros-backend v0.29.2
[INFO] [stderr]    Compiling pyo3-macros v0.29.2
[INFO] [stderr]     Checking traversal-python v0.2.0 (/opt/rustwide/workdir/crates/traversal-python)
[INFO] [stdout] error: useless conversion to the same type: `PyErr`
[INFO] [stdout]   --> crates/traversal-python/src/lib.rs:46:63
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn select(&self, py: Python<'_>, targets: Vec<String>) -> PyResult<Vec<bool>> {
[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] [stdout] error: useless conversion to the same type: `PyErr`
[INFO] [stdout]   --> crates/traversal-python/src/lib.rs:50:79
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn start(&self, py: Python<'_>, targets: Vec<String>, capacity: usize) -> PyResult<PyRun> {
[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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `PyErr`
[INFO] [stdout]   --> crates/traversal-python/src/lib.rs:67:57
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn finish(&mut self, node: usize, outcome: &str) -> PyResult<()> {
[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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `PyErr`
[INFO] [stdout]   --> crates/traversal-python/src/lib.rs:46:63
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn select(&self, py: Python<'_>, targets: Vec<String>) -> PyResult<Vec<bool>> {
[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] [stdout] error: useless conversion to the same type: `PyErr`
[INFO] [stdout]   --> crates/traversal-python/src/lib.rs:50:79
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn start(&self, py: Python<'_>, targets: Vec<String>, capacity: usize) -> PyResult<PyRun> {
[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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `PyErr`
[INFO] [stdout]   --> crates/traversal-python/src/lib.rs:67:57
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn finish(&mut self, node: usize, outcome: &str) -> PyResult<()> {
[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] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `traversal-python` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `traversal-python` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "f4fe03987a72c9b07b18a53f835621d4381adf8d08cb18ae1a372f45d14957ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4fe03987a72c9b07b18a53f835621d4381adf8d08cb18ae1a372f45d14957ae", kill_on_drop: false }`
[INFO] [stdout] f4fe03987a72c9b07b18a53f835621d4381adf8d08cb18ae1a372f45d14957ae
