[INFO] fetching crate nolock 0.4.0...
[INFO] checking nolock-0.4.0 against try#42d1facfffa1a5357d6d62815f7be91f8ad69ed8 for pr-95474
[INFO] extracting crate nolock 0.4.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate nolock 0.4.0 on toolchain 42d1facfffa1a5357d6d62815f7be91f8ad69ed8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+42d1facfffa1a5357d6d62815f7be91f8ad69ed8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nolock 0.4.0
[INFO] finished tweaking crates.io crate nolock 0.4.0
[INFO] tweaked toml for crates.io crate nolock 0.4.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate nolock 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+42d1facfffa1a5357d6d62815f7be91f8ad69ed8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "inspect" "1a139c261630eb8f1eee4debc4262ad84d0385ea4cec5bf1aead92583a3334e2", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+42d1facfffa1a5357d6d62815f7be91f8ad69ed8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9360a94a2668b34392c1917151a2d96426fd9ea5cda3a0c5f297e866add2c2f
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[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> benches/hash_trie.rs:49:30
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn hash_trie_inserts(ctx: &mut Criterion) {}
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> benches/hash_trie.rs:50:28
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn std_map_inserts(ctx: &mut Criterion) {}
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `sync::Arc`, `thread`, `time::Duration`
[INFO] [stdout]  --> tests/hash_trie.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{sync::Arc, thread, time::Duration};
[INFO] [stdout]   |           ^^^^^^^^^  ^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> tests/hazard_ptr.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     unsafe {
[INFO] [stdout]    |     ------ because it's nested under this `unsafe` block
[INFO] [stdout] 19 |         global.retire(initial_ptr, |ptr| {
[INFO] [stdout] 20 |             let ref_cell = unsafe { &*ptr };
[INFO] [stdout]    |                            ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::RngCore`
[INFO] [stdout]  --> tests/hash_trie.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand::RngCore;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `spsc_unbounded_queue_inserts`
[INFO] [stdout]  --> benches/spsc.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     pub fn spsc_unbounded_queue_inserts(ctx: &mut Criterion) {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bounded_enqueue_dequeue`
[INFO] [stdout]   --> benches/spsc.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn bounded_enqueue_dequeue(ctx: &mut Criterion) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> benches/hash_trie.rs:49:30
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn hash_trie_inserts(ctx: &mut Criterion) {}
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> benches/hash_trie.rs:50:28
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn std_map_inserts(ctx: &mut Criterion) {}
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unbounded_enqueue_dequeue`
[INFO] [stdout]   --> benches/spsc.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn unbounded_enqueue_dequeue() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bounded_enqueue_dequeue`
[INFO] [stdout]   --> benches/spsc.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn bounded_enqueue_dequeue() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.27s
[INFO] running `Command { std: "docker" "inspect" "f9360a94a2668b34392c1917151a2d96426fd9ea5cda3a0c5f297e866add2c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9360a94a2668b34392c1917151a2d96426fd9ea5cda3a0c5f297e866add2c2f", kill_on_drop: false }`
[INFO] [stdout] f9360a94a2668b34392c1917151a2d96426fd9ea5cda3a0c5f297e866add2c2f