[INFO] cloning repository https://github.com/ArnaudValensi/vec-tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArnaudValensi/vec-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArnaudValensi%2Fvec-tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArnaudValensi%2Fvec-tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6eda4f151026b31a29c5b76f7765b6577a41e665
[INFO] checking ArnaudValensi/vec-tree against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArnaudValensi%2Fvec-tree" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ArnaudValensi/vec-tree
[INFO] finished tweaking git repo https://github.com/ArnaudValensi/vec-tree
[INFO] tweaked toml for git repo https://github.com/ArnaudValensi/vec-tree written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ArnaudValensi/vec-tree on toolchain 36b21637e93b038453924d3c66821089e71d8baa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ArnaudValensi/vec-tree 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" "+36b21637e93b038453924d3c66821089e71d8baa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cfg-if v0.1.5
[INFO] [stderr]   Downloaded generational-arena v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1ed15fc0bd75c631085fba26639d20dcaec03349720efa71848abc3f420c303
[INFO] running `Command { std: "docker" "start" "-a" "d1ed15fc0bd75c631085fba26639d20dcaec03349720efa71848abc3f420c303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1ed15fc0bd75c631085fba26639d20dcaec03349720efa71848abc3f420c303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1ed15fc0bd75c631085fba26639d20dcaec03349720efa71848abc3f420c303", kill_on_drop: false }`
[INFO] [stdout] d1ed15fc0bd75c631085fba26639d20dcaec03349720efa71848abc3f420c303
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f2f3473dbecc7a0cf3033f4454c4a019cac3fe887edd0b1df84d66838bc0e49
[INFO] running `Command { std: "docker" "start" "-a" "9f2f3473dbecc7a0cf3033f4454c4a019cac3fe887edd0b1df84d66838bc0e49", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking generational-arena v0.2.0
[INFO] [stderr]     Checking vec-tree v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:681:21
[INFO] [stdout]     |
[INFO] [stdout] 681 |     pub fn children(&self, node_id: Index) -> ChildrenIter<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] 681 |     pub fn children(&self, node_id: Index) -> ChildrenIter<'_, 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:691:31
[INFO] [stdout]     |
[INFO] [stdout] 691 |     pub fn preceding_siblings(&self, node_id: Index) -> PrecedingSiblingsIter<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] 691 |     pub fn preceding_siblings(&self, node_id: Index) -> PrecedingSiblingsIter<'_, 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:701:31
[INFO] [stdout]     |
[INFO] [stdout] 701 |     pub fn following_siblings(&self, node_id: Index) -> FollowingSiblingsIter<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] 701 |     pub fn following_siblings(&self, node_id: Index) -> FollowingSiblingsIter<'_, 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:711:22
[INFO] [stdout]     |
[INFO] [stdout] 711 |     pub fn ancestors(&self, node_id: Index) -> AncestorsIter<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] 711 |     pub fn ancestors(&self, node_id: Index) -> AncestorsIter<'_, 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:719:17
[INFO] [stdout]     |
[INFO] [stdout] 719 |     fn traverse(&self, node_id: Index) -> TraverseIter<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] 719 |     fn traverse(&self, node_id: Index) -> TraverseIter<'_, 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:729:28
[INFO] [stdout]     |
[INFO] [stdout] 729 |     fn traverse_with_depth(&self, node_id: Index) -> TraverseWithDepthIter<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] 729 |     fn traverse_with_depth(&self, node_id: Index) -> TraverseWithDepthIter<'_, 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:741:24
[INFO] [stdout]     |
[INFO] [stdout] 741 |     pub fn descendants(&self, node_id: Index) -> DescendantsIter<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] 741 |     pub fn descendants(&self, node_id: Index) -> DescendantsIter<'_, 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:750:35
[INFO] [stdout]     |
[INFO] [stdout] 750 |     pub fn descendants_with_depth(&self, node_id: Index) -> DescendantsWithDepthIter<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] 750 |     pub fn descendants_with_depth(&self, node_id: Index) -> DescendantsWithDepthIter<'_, 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:681:21
[INFO] [stdout]     |
[INFO] [stdout] 681 |     pub fn children(&self, node_id: Index) -> ChildrenIter<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] 681 |     pub fn children(&self, node_id: Index) -> ChildrenIter<'_, 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:691:31
[INFO] [stdout]     |
[INFO] [stdout] 691 |     pub fn preceding_siblings(&self, node_id: Index) -> PrecedingSiblingsIter<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] 691 |     pub fn preceding_siblings(&self, node_id: Index) -> PrecedingSiblingsIter<'_, 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:701:31
[INFO] [stdout]     |
[INFO] [stdout] 701 |     pub fn following_siblings(&self, node_id: Index) -> FollowingSiblingsIter<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] 701 |     pub fn following_siblings(&self, node_id: Index) -> FollowingSiblingsIter<'_, 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:711:22
[INFO] [stdout]     |
[INFO] [stdout] 711 |     pub fn ancestors(&self, node_id: Index) -> AncestorsIter<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] 711 |     pub fn ancestors(&self, node_id: Index) -> AncestorsIter<'_, 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:719:17
[INFO] [stdout]     |
[INFO] [stdout] 719 |     fn traverse(&self, node_id: Index) -> TraverseIter<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] 719 |     fn traverse(&self, node_id: Index) -> TraverseIter<'_, 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:729:28
[INFO] [stdout]     |
[INFO] [stdout] 729 |     fn traverse_with_depth(&self, node_id: Index) -> TraverseWithDepthIter<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] 729 |     fn traverse_with_depth(&self, node_id: Index) -> TraverseWithDepthIter<'_, 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:741:24
[INFO] [stdout]     |
[INFO] [stdout] 741 |     pub fn descendants(&self, node_id: Index) -> DescendantsIter<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] 741 |     pub fn descendants(&self, node_id: Index) -> DescendantsIter<'_, 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:750:35
[INFO] [stdout]     |
[INFO] [stdout] 750 |     pub fn descendants_with_depth(&self, node_id: Index) -> DescendantsWithDepthIter<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] 750 |     pub fn descendants_with_depth(&self, node_id: Index) -> DescendantsWithDepthIter<'_, T> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "9f2f3473dbecc7a0cf3033f4454c4a019cac3fe887edd0b1df84d66838bc0e49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f2f3473dbecc7a0cf3033f4454c4a019cac3fe887edd0b1df84d66838bc0e49", kill_on_drop: false }`
[INFO] [stdout] 9f2f3473dbecc7a0cf3033f4454c4a019cac3fe887edd0b1df84d66838bc0e49
