[INFO] fetching crate toy_arena 0.2.0...
[INFO] testing toy_arena-0.2.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate toy_arena 0.2.0 into /workspace/builds/worker-37/source
[INFO] validating manifest of crates.io crate toy_arena 0.2.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate toy_arena 0.2.0
[INFO] finished tweaking crates.io crate toy_arena 0.2.0
[INFO] tweaked toml for crates.io crate toy_arena 0.2.0 written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 443e5b9994a08ac0db683f977f8e44bfa58e3f09fae6ec433aaa8ec1cb9cfee0
[INFO] running `Command { std: "docker" "start" "-a" "443e5b9994a08ac0db683f977f8e44bfa58e3f09fae6ec433aaa8ec1cb9cfee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "443e5b9994a08ac0db683f977f8e44bfa58e3f09fae6ec433aaa8ec1cb9cfee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "443e5b9994a08ac0db683f977f8e44bfa58e3f09fae6ec433aaa8ec1cb9cfee0", kill_on_drop: false }`
[INFO] [stdout] 443e5b9994a08ac0db683f977f8e44bfa58e3f09fae6ec433aaa8ec1cb9cfee0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50a61237cfba4374cb34dfbb636c5a60fa1c790c53e835df67d523e69e5d7082
[INFO] running `Command { std: "docker" "start" "-a" "50a61237cfba4374cb34dfbb636c5a60fa1c790c53e835df67d523e69e5d7082", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling toy_arena v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         unsafe { &*self.inner.as_ref().tree.get() }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         unsafe { &mut *self.inner.as_ref().tree.get() }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:87:20
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let tree = unsafe { self.bind.tree() };
[INFO] [stdout]    |                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:92:20
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let tree = unsafe { self.bind.tree_mut() };
[INFO] [stdout]    |                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_parent`
[INFO] [stdout]   --> src/tree/link.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn set_parent(&mut self, parent: Option<Slot>) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.61s
[INFO] running `Command { std: "docker" "inspect" "50a61237cfba4374cb34dfbb636c5a60fa1c790c53e835df67d523e69e5d7082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50a61237cfba4374cb34dfbb636c5a60fa1c790c53e835df67d523e69e5d7082", kill_on_drop: false }`
[INFO] [stdout] 50a61237cfba4374cb34dfbb636c5a60fa1c790c53e835df67d523e69e5d7082
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 490e5ea2be5670f26a735c5e59613f3dc73bddbf9dec98800eddc0742d0672ca
[INFO] running `Command { std: "docker" "start" "-a" "490e5ea2be5670f26a735c5e59613f3dc73bddbf9dec98800eddc0742d0672ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling toy_arena v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         unsafe { &*self.inner.as_ref().tree.get() }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         unsafe { &mut *self.inner.as_ref().tree.get() }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:87:20
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let tree = unsafe { self.bind.tree() };
[INFO] [stdout]    |                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:92:20
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let tree = unsafe { self.bind.tree_mut() };
[INFO] [stdout]    |                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_parent`
[INFO] [stdout]   --> src/tree/link.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn set_parent(&mut self, parent: Option<Slot>) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         unsafe { &*self.inner.as_ref().tree.get() }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         unsafe { &mut *self.inner.as_ref().tree.get() }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:87:20
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let tree = unsafe { self.bind.tree() };
[INFO] [stdout]    |                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/tree/iter_mut.rs:92:20
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let tree = unsafe { self.bind.tree_mut() };
[INFO] [stdout]    |                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_parent`
[INFO] [stdout]   --> src/tree/link.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn set_parent(&mut self, parent: Option<Slot>) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `Command { std: "docker" "inspect" "490e5ea2be5670f26a735c5e59613f3dc73bddbf9dec98800eddc0742d0672ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "490e5ea2be5670f26a735c5e59613f3dc73bddbf9dec98800eddc0742d0672ca", kill_on_drop: false }`
[INFO] [stdout] 490e5ea2be5670f26a735c5e59613f3dc73bddbf9dec98800eddc0742d0672ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2fd78c6d15fd2cce2fc98425cae03b4294a38101359066aa34dc74d89a07b5f1
[INFO] running `Command { std: "docker" "start" "-a" "2fd78c6d15fd2cce2fc98425cae03b4294a38101359066aa34dc74d89a07b5f1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/tree/iter_mut.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         unsafe { &*self.inner.as_ref().tree.get() }
[INFO] [stderr]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/tree/iter_mut.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         unsafe { &mut *self.inner.as_ref().tree.get() }
[INFO] [stderr]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/tree/iter_mut.rs:87:20
[INFO] [stderr]    |
[INFO] [stderr] 87 |         let tree = unsafe { self.bind.tree() };
[INFO] [stderr]    |                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/tree/iter_mut.rs:92:20
[INFO] [stderr]    |
[INFO] [stderr] 92 |         let tree = unsafe { self.bind.tree_mut() };
[INFO] [stderr]    |                    ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_parent`
[INFO] [stderr]   --> src/tree/link.rs:49:12
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn set_parent(&mut self, parent: Option<Slot>) {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `toy_arena` (lib) generated 5 warnings
[INFO] [stderr] warning: `toy_arena` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/toy_arena-546714e7b80e1cca)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test test::drain ... ok
[INFO] [stdout] test test::entry_bind ... ok
[INFO] [stdout] test tree::test::tree_macro_test ... ok
[INFO] [stdout] test test::insert_remove_invalidate_replace ... ok
[INFO] [stdout] test tree::test::manual_traverse ... ok
[INFO] [stdout] test tree::test::automatic_traverse ... ok
[INFO] [stdout] test test::retain ... ok
[INFO] [stdout] test test::gen_macro ... ok
[INFO] [stderr]    Doc-tests toy_arena
[INFO] [stdout] test tree::test::tree_remove ... ok
[INFO] [stdout] test test::entry_binds ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - Index (line 124) ... ok
[INFO] [stdout] test src/lib.rs - arena (line 713) ... ok
[INFO] [stdout] test src/_example.rs - _example (line 40) ... ok
[INFO] [stdout] test src/_example.rs - _example (line 7) ... ok
[INFO] [stdout] test src/tree.rs - tree::tree (line 326) ... ok
[INFO] [stdout] test src/_example.rs - _example (line 62) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2fd78c6d15fd2cce2fc98425cae03b4294a38101359066aa34dc74d89a07b5f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fd78c6d15fd2cce2fc98425cae03b4294a38101359066aa34dc74d89a07b5f1", kill_on_drop: false }`
[INFO] [stdout] 2fd78c6d15fd2cce2fc98425cae03b4294a38101359066aa34dc74d89a07b5f1