[INFO] fetching crate scc 0.4.5...
[INFO] checking scc-0.4.5 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate scc 0.4.5 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate scc 0.4.5 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scc 0.4.5
[INFO] finished tweaking crates.io crate scc 0.4.5
[INFO] tweaked toml for crates.io crate scc 0.4.5 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d04f2ee6f04d69bfd4e254f453e253a0ac32201341c9f591e68a768599f478b5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d04f2ee6f04d69bfd4e254f453e253a0ac32201341c9f591e68a768599f478b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d04f2ee6f04d69bfd4e254f453e253a0ac32201341c9f591e68a768599f478b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d04f2ee6f04d69bfd4e254f453e253a0ac32201341c9f591e68a768599f478b5", kill_on_drop: false }`
[INFO] [stdout] d04f2ee6f04d69bfd4e254f453e253a0ac32201341c9f591e68a768599f478b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b8cceca21ca73f385f6224c6dbbbf232edd5ab50a7a28371d7a865c9184177fc
[INFO] running `Command { std: "docker" "start" "-a" "b8cceca21ca73f385f6224c6dbbbf232edd5ab50a7a28371d7a865c9184177fc", kill_on_drop: false }`
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking scc v0.4.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/hashindex/cell.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Acquire`, `Release`
[INFO] [stdout]  --> src/hashindex/cell.rs:5:35
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::atomic::Ordering::{Acquire, Relaxed, Release};
[INFO] [stdout]   |                                   ^^^^^^^           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/hashindex/cell.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Acquire`, `Release`
[INFO] [stdout]  --> src/hashindex/cell.rs:5:35
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::atomic::Ordering::{Acquire, Relaxed, Release};
[INFO] [stdout]   |                                   ^^^^^^^           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hashindex/cell.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut current = self.wait_queue.load(Relaxed, guard);
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hashindex/cell.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut current = self.wait_queue.load(Relaxed, guard);
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cell_array`
[INFO] [stdout]  --> src/hashindex/array.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     cell_array: Vec<Cell<K, V>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LOCK_TAG`
[INFO] [stdout]   --> src/hashindex/cell.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const LOCK_TAG: usize = 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `WAITING_TAG`
[INFO] [stdout]   --> src/hashindex/cell.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const WAITING_TAG: u32 = 1 << 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wait_queue`
[INFO] [stdout]   --> src/hashindex/cell.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     wait_queue: Atomic<WaitQueueEntry>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]   --> src/hashindex/cell.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     data: Atomic<[MaybeUninit<(K, V)>; ARRAY_SIZE]>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lock`
[INFO] [stdout]   --> src/hashindex/cell.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn lock(&self, guard: &Guard) -> bool {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DataArray`
[INFO] [stdout]   --> src/hashindex/cell.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct DataArray<K: Clone + Eq, V: Clone> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hashindex/cell.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn new(link: Atomic<DataArray<K, V>>) -> DataArray<K, V> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mutex`
[INFO] [stdout]   --> src/hashindex/cell.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     mutex: Mutex<bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `condvar`
[INFO] [stdout]   --> src/hashindex/cell.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     condvar: Condvar,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]   --> src/hashindex/cell.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     next: *mut WaitQueueEntry,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hashindex/cell.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn new(wait_queue: *mut WaitQueueEntry) -> WaitQueueEntry {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `wait`
[INFO] [stdout]   --> src/hashindex/cell.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn wait(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `signal`
[INFO] [stdout]   --> src/hashindex/cell.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn signal(&self) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cell_array`
[INFO] [stdout]  --> src/hashindex/array.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     cell_array: Vec<Cell<K, V>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LOCK_TAG`
[INFO] [stdout]   --> src/hashindex/cell.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const LOCK_TAG: usize = 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `WAITING_TAG`
[INFO] [stdout]   --> src/hashindex/cell.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const WAITING_TAG: u32 = 1 << 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wait_queue`
[INFO] [stdout]   --> src/hashindex/cell.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     wait_queue: Atomic<WaitQueueEntry>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]   --> src/hashindex/cell.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     data: Atomic<[MaybeUninit<(K, V)>; ARRAY_SIZE]>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `lock`
[INFO] [stdout]   --> src/hashindex/cell.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn lock(&self, guard: &Guard) -> bool {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DataArray`
[INFO] [stdout]   --> src/hashindex/cell.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct DataArray<K: Clone + Eq, V: Clone> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hashindex/cell.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn new(link: Atomic<DataArray<K, V>>) -> DataArray<K, V> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mutex`
[INFO] [stdout]   --> src/hashindex/cell.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     mutex: Mutex<bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `condvar`
[INFO] [stdout]   --> src/hashindex/cell.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     condvar: Condvar,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]   --> src/hashindex/cell.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     next: *mut WaitQueueEntry,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hashindex/cell.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn new(wait_queue: *mut WaitQueueEntry) -> WaitQueueEntry {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `wait`
[INFO] [stdout]   --> src/hashindex/cell.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn wait(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `signal`
[INFO] [stdout]   --> src/hashindex/cell.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn signal(&self) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.86s
[INFO] running `Command { std: "docker" "inspect" "b8cceca21ca73f385f6224c6dbbbf232edd5ab50a7a28371d7a865c9184177fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8cceca21ca73f385f6224c6dbbbf232edd5ab50a7a28371d7a865c9184177fc", kill_on_drop: false }`
[INFO] [stdout] b8cceca21ca73f385f6224c6dbbbf232edd5ab50a7a28371d7a865c9184177fc