[INFO] fetching crate pi_tree 0.1.0...
[INFO] building pi_tree-0.1.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate pi_tree 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate pi_tree 0.1.0
[INFO] finished tweaking crates.io crate pi_tree 0.1.0
[INFO] tweaked toml for crates.io crate pi_tree 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pi_tree 0.1.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding pi_slotmap v0.1.17 (available: v0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pi_null v0.1.12
[INFO] [stderr]   Downloaded pi_key_alloter v0.5.2
[INFO] [stderr]   Downloaded pi_share v0.4.16
[INFO] [stderr]   Downloaded pi_slotmap v0.1.17
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e31cb3f478d69e09e2ee503472810486ba3f172a4afb4f7e4407b6d795968f4b
[INFO] running `Command { std: "docker" "start" "-a" "e31cb3f478d69e09e2ee503472810486ba3f172a4afb4f7e4407b6d795968f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e31cb3f478d69e09e2ee503472810486ba3f172a4afb4f7e4407b6d795968f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e31cb3f478d69e09e2ee503472810486ba3f172a4afb4f7e4407b6d795968f4b", kill_on_drop: false }`
[INFO] [stdout] e31cb3f478d69e09e2ee503472810486ba3f172a4afb4f7e4407b6d795968f4b
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2cb60029673d5e32b0989e917d938871b8b63023024af6f845f82fbbb075fe5
[INFO] running `Command { std: "docker" "start" "-a" "e2cb60029673d5e32b0989e917d938871b8b63023024af6f845f82fbbb075fe5", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling pi_share v0.4.16
[INFO] [stderr]    Compiling pi_null v0.1.12
[INFO] [stderr]    Compiling pi_slotmap v0.1.17
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling pi_key_alloter v0.5.2
[INFO] [stderr]    Compiling pi_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:183:21
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn iter_mut(&mut self, node_children_head: Option<K>) -> ChildrenMutIterator<K, T> {
[INFO] [stdout]     |                     ^^^^^^^^^ the lifetime is elided here        ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn iter_mut(&mut self, node_children_head: Option<K>) -> ChildrenMutIterator<'_, K, T> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:190:17
[INFO] [stdout]     |
[INFO] [stdout] 190 |     pub fn iter(&self, node_children_head: Option<K>) -> ChildrenIterator<K, T> {
[INFO] [stdout]     |                 ^^^^^ the lifetime is elided here        ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 190 |     pub fn iter(&self, node_children_head: Option<K>) -> ChildrenIterator<'_, K, T> {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:197:27
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub fn recursive_iter(&self, node_children_head: Option<K>) -> RecursiveIterator<K, T> {
[INFO] [stdout]     |                           ^^^^^ the lifetime is elided here        ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub fn recursive_iter(&self, node_children_head: Option<K>) -> RecursiveIterator<'_, K, T> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.79s
[INFO] running `Command { std: "docker" "inspect" "e2cb60029673d5e32b0989e917d938871b8b63023024af6f845f82fbbb075fe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2cb60029673d5e32b0989e917d938871b8b63023024af6f845f82fbbb075fe5", kill_on_drop: false }`
[INFO] [stdout] e2cb60029673d5e32b0989e917d938871b8b63023024af6f845f82fbbb075fe5
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b2508b88522b63b14dd6c6c8e74d38984923e88fa2a9952f9a393a31fd33bb2
[INFO] running `Command { std: "docker" "start" "-a" "4b2508b88522b63b14dd6c6c8e74d38984923e88fa2a9952f9a393a31fd33bb2", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:183:21
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn iter_mut(&mut self, node_children_head: Option<K>) -> ChildrenMutIterator<K, T> {
[INFO] [stdout]     |                     ^^^^^^^^^ the lifetime is elided here        ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn iter_mut(&mut self, node_children_head: Option<K>) -> ChildrenMutIterator<'_, K, T> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:190:17
[INFO] [stdout]     |
[INFO] [stdout] 190 |     pub fn iter(&self, node_children_head: Option<K>) -> ChildrenIterator<K, T> {
[INFO] [stdout]     |                 ^^^^^ the lifetime is elided here        ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 190 |     pub fn iter(&self, node_children_head: Option<K>) -> ChildrenIterator<'_, K, T> {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pi_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:197:27
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub fn recursive_iter(&self, node_children_head: Option<K>) -> RecursiveIterator<K, T> {
[INFO] [stdout]     |                           ^^^^^ the lifetime is elided here        ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub fn recursive_iter(&self, node_children_head: Option<K>) -> RecursiveIterator<'_, K, T> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:183:21
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn iter_mut(&mut self, node_children_head: Option<K>) -> ChildrenMutIterator<K, T> {
[INFO] [stdout]     |                     ^^^^^^^^^ the lifetime is elided here        ^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 183 |     pub fn iter_mut(&mut self, node_children_head: Option<K>) -> ChildrenMutIterator<'_, K, T> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:190:17
[INFO] [stdout]     |
[INFO] [stdout] 190 |     pub fn iter(&self, node_children_head: Option<K>) -> ChildrenIterator<K, T> {
[INFO] [stdout]     |                 ^^^^^ the lifetime is elided here        ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 190 |     pub fn iter(&self, node_children_head: Option<K>) -> ChildrenIterator<'_, K, T> {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:197:27
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub fn recursive_iter(&self, node_children_head: Option<K>) -> RecursiveIterator<K, T> {
[INFO] [stdout]     |                           ^^^^^ the lifetime is elided here        ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub fn recursive_iter(&self, node_children_head: Option<K>) -> RecursiveIterator<'_, K, T> {
[INFO] [stdout]     |                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "4b2508b88522b63b14dd6c6c8e74d38984923e88fa2a9952f9a393a31fd33bb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b2508b88522b63b14dd6c6c8e74d38984923e88fa2a9952f9a393a31fd33bb2", kill_on_drop: false }`
[INFO] [stdout] 4b2508b88522b63b14dd6c6c8e74d38984923e88fa2a9952f9a393a31fd33bb2
