[INFO] fetching crate toy_arena 0.2.0...
[INFO] testing toy_arena-0.2.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate toy_arena 0.2.0 into /workspace/builds/worker-55/source
[INFO] validating manifest of crates.io crate toy_arena 0.2.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-55/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b285119117c90a47fdd01afa0820e16b3e26865ca58793673a3f38df1e8c05e0
[INFO] running `Command { std: "docker" "start" "-a" "b285119117c90a47fdd01afa0820e16b3e26865ca58793673a3f38df1e8c05e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b285119117c90a47fdd01afa0820e16b3e26865ca58793673a3f38df1e8c05e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b285119117c90a47fdd01afa0820e16b3e26865ca58793673a3f38df1e8c05e0", kill_on_drop: false }`
[INFO] [stdout] b285119117c90a47fdd01afa0820e16b3e26865ca58793673a3f38df1e8c05e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f20bf8a93185485e3ca5473b401f9af1c642433cea719131685e92d40e4d392
[INFO] running `Command { std: "docker" "start" "-a" "9f20bf8a93185485e3ca5473b401f9af1c642433cea719131685e92d40e4d392", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.81
[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 10.71s
[INFO] running `Command { std: "docker" "inspect" "9f20bf8a93185485e3ca5473b401f9af1c642433cea719131685e92d40e4d392", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f20bf8a93185485e3ca5473b401f9af1c642433cea719131685e92d40e4d392", kill_on_drop: false }`
[INFO] [stdout] 9f20bf8a93185485e3ca5473b401f9af1c642433cea719131685e92d40e4d392
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3652973152a79cd2c6b487d2d5cca73b7b946c8ead51e6755d44bd68bc3f2e2b
[INFO] running `Command { std: "docker" "start" "-a" "3652973152a79cd2c6b487d2d5cca73b7b946c8ead51e6755d44bd68bc3f2e2b", 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 2.16s
[INFO] running `Command { std: "docker" "inspect" "3652973152a79cd2c6b487d2d5cca73b7b946c8ead51e6755d44bd68bc3f2e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3652973152a79cd2c6b487d2d5cca73b7b946c8ead51e6755d44bd68bc3f2e2b", kill_on_drop: false }`
[INFO] [stdout] 3652973152a79cd2c6b487d2d5cca73b7b946c8ead51e6755d44bd68bc3f2e2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4a2dce6dc1501f9b1ba890e4df4ebce94f6e4cd209a53f38da0e39480886f8a5
[INFO] running `Command { std: "docker" "start" "-a" "4a2dce6dc1501f9b1ba890e4df4ebce94f6e4cd209a53f38da0e39480886f8a5", kill_on_drop: false }`
[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 0.16s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/toy_arena-339af2118b2f01c5)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test test::drain ... ok
[INFO] [stdout] test test::entry_bind ... ok
[INFO] [stdout] test test::entry_binds ... ok
[INFO] [stdout] test test::insert_remove_invalidate_replace ... ok
[INFO] [stdout] test tree::test::tree_macro_test ... ok
[INFO] [stdout] test tree::test::manual_traverse ... ok
[INFO] [stdout] test test::retain ... ok
[INFO] [stderr]    Doc-tests toy_arena
[INFO] [stdout] test tree::test::automatic_traverse ... ok
[INFO] [stdout] test tree::test::tree_remove ... ok
[INFO] [stdout] test test::gen_macro ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/_example.rs - _example (line 62) ... ok
[INFO] [stdout] test src/lib.rs - Index (line 124) ... ok
[INFO] [stdout] test src/lib.rs - arena (line 713) ... ok
[INFO] [stdout] test src/tree.rs - tree::tree (line 326) ... ok
[INFO] [stdout] test src/_example.rs - _example (line 7) ... ok
[INFO] [stdout] test src/_example.rs - _example (line 40) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.73s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4a2dce6dc1501f9b1ba890e4df4ebce94f6e4cd209a53f38da0e39480886f8a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a2dce6dc1501f9b1ba890e4df4ebce94f6e4cd209a53f38da0e39480886f8a5", kill_on_drop: false }`
[INFO] [stdout] 4a2dce6dc1501f9b1ba890e4df4ebce94f6e4cd209a53f38da0e39480886f8a5