[INFO] cloning repository https://github.com/1ort/rust-bst
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/1ort/rust-bst" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1ort%2Frust-bst", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1ort%2Frust-bst'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bfc1b52795d063541cf5193de29689f2b2130cde
[INFO] checking 1ort/rust-bst against master#32cd9114712a24010b0583624dc52ac302194128 for pr-143717
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1ort%2Frust-bst" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/1ort/rust-bst
[INFO] finished tweaking git repo https://github.com/1ort/rust-bst
[INFO] tweaked toml for git repo https://github.com/1ort/rust-bst written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/1ort/rust-bst on toolchain 32cd9114712a24010b0583624dc52ac302194128
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+32cd9114712a24010b0583624dc52ac302194128" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/1ort/rust-bst 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" "+32cd9114712a24010b0583624dc52ac302194128" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+32cd9114712a24010b0583624dc52ac302194128" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78d4a5bb55f6d60eced189f8a1727941b31b15ce0c900a72648ee7ffd1382bee
[INFO] running `Command { std: "docker" "start" "-a" "78d4a5bb55f6d60eced189f8a1727941b31b15ce0c900a72648ee7ffd1382bee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78d4a5bb55f6d60eced189f8a1727941b31b15ce0c900a72648ee7ffd1382bee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78d4a5bb55f6d60eced189f8a1727941b31b15ce0c900a72648ee7ffd1382bee", kill_on_drop: false }`
[INFO] [stdout] 78d4a5bb55f6d60eced189f8a1727941b31b15ce0c900a72648ee7ffd1382bee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+32cd9114712a24010b0583624dc52ac302194128" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47c74efd56b608b97a16a1926403b8d8aa7a67b6b1219dfb868f8d442875f0c7
[INFO] running `Command { std: "docker" "start" "-a" "47c74efd56b608b97a16a1926403b8d8aa7a67b6b1219dfb868f8d442875f0c7", kill_on_drop: false }`
[INFO] [stderr]     Checking bst v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lib.rs:84:30
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn inorder_traversal(&self) -> InorderTraversalIterator<T> {
[INFO] [stdout]    |                              ^^^^^     --------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn inorder_traversal(&self) -> InorderTraversalIterator<'_, T> {
[INFO] [stdout]    |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lib.rs:91:36
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn reverse_order_traversal(&self) -> ReverseOrderTraversalIterator<T> {
[INFO] [stdout]    |                                    ^^^^^     -------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn reverse_order_traversal(&self) -> ReverseOrderTraversalIterator<'_, T> {
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lib.rs:84:30
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn inorder_traversal(&self) -> InorderTraversalIterator<T> {
[INFO] [stdout]    |                              ^^^^^     --------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn inorder_traversal(&self) -> InorderTraversalIterator<'_, T> {
[INFO] [stdout]    |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lib.rs:91:36
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn reverse_order_traversal(&self) -> ReverseOrderTraversalIterator<T> {
[INFO] [stdout]    |                                    ^^^^^     -------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn reverse_order_traversal(&self) -> ReverseOrderTraversalIterator<'_, T> {
[INFO] [stdout]    |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "47c74efd56b608b97a16a1926403b8d8aa7a67b6b1219dfb868f8d442875f0c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47c74efd56b608b97a16a1926403b8d8aa7a67b6b1219dfb868f8d442875f0c7", kill_on_drop: false }`
[INFO] [stdout] 47c74efd56b608b97a16a1926403b8d8aa7a67b6b1219dfb868f8d442875f0c7
