[INFO] cloning repository https://github.com/Abso1ut3Zer0/nexus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Abso1ut3Zer0/nexus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbso1ut3Zer0%2Fnexus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbso1ut3Zer0%2Fnexus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ad2f4f3d56f8d4716419776d1540146bbdfc287
[INFO] checking Abso1ut3Zer0/nexus against master#035b01b794602d5861daa43ac792f372f8981ed7 for 152214-denied-retry-0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbso1ut3Zer0%2Fnexus" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Abso1ut3Zer0/nexus
[INFO] finished tweaking git repo https://github.com/Abso1ut3Zer0/nexus
[INFO] tweaked toml for git repo https://github.com/Abso1ut3Zer0/nexus written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Abso1ut3Zer0/nexus on toolchain 035b01b794602d5861daa43ac792f372f8981ed7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "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" "+035b01b794602d5861daa43ac792f372f8981ed7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 166 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.8.2)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69dd07710d07507e52d4f9c92bb07ef8f99107f230d6e962dcc9bf0fbaee2345
[INFO] running `Command { std: "docker" "start" "-a" "69dd07710d07507e52d4f9c92bb07ef8f99107f230d6e962dcc9bf0fbaee2345", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69dd07710d07507e52d4f9c92bb07ef8f99107f230d6e962dcc9bf0fbaee2345", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69dd07710d07507e52d4f9c92bb07ef8f99107f230d6e962dcc9bf0fbaee2345", kill_on_drop: false }`
[INFO] [stdout] 69dd07710d07507e52d4f9c92bb07ef8f99107f230d6e962dcc9bf0fbaee2345
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1eb592ab82750125ac292c87b37493a1f7dcd1765616aeb25228fbeeed8161f9
[INFO] running `Command { std: "docker" "start" "-a" "1eb592ab82750125ac292c87b37493a1f7dcd1765616aeb25228fbeeed8161f9", kill_on_drop: false }`
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[INFO] [stderr]    Compiling quote v1.0.44
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
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[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling target-triple v1.0.0
[INFO] [stderr]     Checking pin-project-lite v0.2.16
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[INFO] [stderr]     Checking bit-set v0.8.0
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[INFO] [stderr]    Compiling rayon-core v1.13.0
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[INFO] [stderr]     Checking either v1.15.0
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[INFO] [stderr]     Checking nexus-collections v0.8.2 (/opt/rustwide/workdir/nexus-collections)
[INFO] [stderr]     Checking nexus-ascii v1.4.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking nexus-channel v1.1.0 (/opt/rustwide/workdir/nexus-channel)
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[INFO] [stderr]     Checking seqlock v0.2.0
[INFO] [stderr]     Checking nexus-logbuf v1.0.1 (/opt/rustwide/workdir/nexus-logbuf)
[INFO] [stderr]     Checking nexus-slot v0.1.2 (/opt/rustwide/workdir/nexus-slot)
[INFO] [stderr]     Checking toml_parser v1.0.6+spec-1.1.0
[INFO] [stderr]     Checking nexus-pool v1.0.0 (/opt/rustwide/workdir/nexus-pool)
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking nexus-id v1.1.1 (/opt/rustwide/workdir/nexus-id)
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking tempfile v3.25.0
[INFO] [stderr]     Checking hdrhistogram v7.5.4
[INFO] [stderr]     Checking clap v4.5.57
[INFO] [stderr]     Checking rusty-fork v0.3.1
[INFO] [stderr]     Checking toml_datetime v0.7.5+spec-1.1.0
[INFO] [stderr]     Checking serde_spanned v1.0.4
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking toml v0.9.11+spec-1.1.0
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]    Compiling zerocopy-derive v0.8.39
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serial_test_derive v3.3.1
[INFO] [stderr]    Compiling nexus-bits-derive v0.3.0
[INFO] [stderr]     Checking nexus-bits-derive v0.3.0 (/opt/rustwide/workdir/nexus-bits-derive)
[INFO] [stderr]     Checking serial_test v3.3.1
[INFO] [stderr]     Checking nexus-bits v0.3.0 (/opt/rustwide/workdir/nexus-bits)
[INFO] [stderr]     Checking trybuild v1.0.115
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking half v2.7.1
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]     Checking proptest v1.10.0
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_rbtree.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |             black_box(map.try_insert(k, 0));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 222 |             let _ = black_box(map.try_insert(k, 0));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_rbtree.rs:240:32
[INFO] [stdout]     |
[INFO] [stdout] 240 |             seq!(I in 0..100 { black_box(map.try_insert(batch[I], 0)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 240 |             seq!(I in 0..100 { let _ = black_box(map.try_insert(batch[I], 0)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_rbtree.rs:248:32
[INFO] [stdout]     |
[INFO] [stdout] 248 |             seq!(I in 0..100 { black_box(map.try_insert(batch[I], 0)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 248 |             seq!(I in 0..100 { let _ = black_box(map.try_insert(batch[I], 0)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_rbtree.rs:304:32
[INFO] [stdout]     |
[INFO] [stdout] 304 |             seq!(I in 0..100 { black_box(map.try_insert(lookup[I], 999)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 304 |             seq!(I in 0..100 { let _ = black_box(map.try_insert(lookup[I], 999)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_rbtree.rs:308:32
[INFO] [stdout]     |
[INFO] [stdout] 308 |             seq!(I in 0..100 { black_box(map.try_insert(lookup[I], 999)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 308 |             seq!(I in 0..100 { let _ = black_box(map.try_insert(lookup[I], 999)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_rbtree.rs:354:32
[INFO] [stdout]     |
[INFO] [stdout] 354 |             seq!(I in 0..100 { black_box(map.entry(batch[I]).or_try_insert(0)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 354 |             seq!(I in 0..100 { let _ = black_box(map.entry(batch[I]).or_try_insert(0)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_rbtree.rs:362:32
[INFO] [stdout]     |
[INFO] [stdout] 362 |             seq!(I in 0..100 { black_box(map.entry(batch[I]).or_try_insert(0)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 362 |             seq!(I in 0..100 { let _ = black_box(map.entry(batch[I]).or_try_insert(0)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_btree.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |             black_box(map.try_insert(k, 0));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 222 |             let _ = black_box(map.try_insert(k, 0));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_btree.rs:240:32
[INFO] [stdout]     |
[INFO] [stdout] 240 |             seq!(I in 0..100 { black_box(map.try_insert(batch[I], 0)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 240 |             seq!(I in 0..100 { let _ = black_box(map.try_insert(batch[I], 0)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_btree.rs:248:32
[INFO] [stdout]     |
[INFO] [stdout] 248 |             seq!(I in 0..100 { black_box(map.try_insert(batch[I], 0)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 248 |             seq!(I in 0..100 { let _ = black_box(map.try_insert(batch[I], 0)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_btree.rs:304:32
[INFO] [stdout]     |
[INFO] [stdout] 304 |             seq!(I in 0..100 { black_box(map.try_insert(lookup[I], 999)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 304 |             seq!(I in 0..100 { let _ = black_box(map.try_insert(lookup[I], 999)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_btree.rs:308:32
[INFO] [stdout]     |
[INFO] [stdout] 308 |             seq!(I in 0..100 { black_box(map.try_insert(lookup[I], 999)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 308 |             seq!(I in 0..100 { let _ = black_box(map.try_insert(lookup[I], 999)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_btree.rs:354:32
[INFO] [stdout]     |
[INFO] [stdout] 354 |             seq!(I in 0..100 { black_box(map.entry(batch[I]).or_try_insert(0)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 354 |             seq!(I in 0..100 { let _ = black_box(map.entry(batch[I]).or_try_insert(0)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> nexus-collections/examples/perf_btree.rs:362:32
[INFO] [stdout]     |
[INFO] [stdout] 362 |             seq!(I in 0..100 { black_box(map.entry(batch[I]).or_try_insert(0)); });
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 362 |             seq!(I in 0..100 { let _ = black_box(map.entry(batch[I]).or_try_insert(0)); });
[INFO] [stdout]     |                                +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> nexus-slab/tests/miri_tests.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct DropTracker(u64);
[INFO] [stdout]    |            ----------- ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `occupied` is assigned to, but never used
[INFO] [stdout]   --> nexus-slab/examples/perf_stress_test.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut occupied = 0usize;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_occupied` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `occupied` is never read
[INFO] [stdout]    --> nexus-slab/examples/perf_stress_test.rs:127:21
[INFO] [stdout]     |
[INFO] [stdout] 127 |                     occupied += 1;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `occupied` is never read
[INFO] [stdout]    --> nexus-slab/examples/perf_stress_test.rs:122:21
[INFO] [stdout]     |
[INFO] [stdout] 122 |                     occupied -= 1;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `occupied` is never read
[INFO] [stdout]    --> nexus-slab/examples/perf_stress_test.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |             occupied += 1;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> nexus-slab/tests/rc_tests.rs:29:24
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct DropTracker(u64);
[INFO] [stdout]    |            ----------- ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `DropTracker` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `data` are never read
[INFO] [stdout]   --> nexus-slab/examples/perf_stress_test.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub struct TestValue {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 67 |     id: u64,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 68 |     data: [u64; 7], // 64 bytes total - realistic order/message size
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestValue` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]    --> nexus-slab/examples/perf_stress_test.rs:484:5
[INFO] [stdout]     |
[INFO] [stdout] 483 | pub struct Small {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 484 |     data: [u8; 32],
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Small` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]    --> nexus-slab/examples/perf_stress_test.rs:489:5
[INFO] [stdout]     |
[INFO] [stdout] 488 | pub struct Medium {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 489 |     data: [u8; 128],
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Medium` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]    --> nexus-slab/examples/perf_stress_test.rs:494:5
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub struct Large {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 494 |     data: [u8; 512],
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Large` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]    --> nexus-slab/examples/perf_stress_test.rs:499:5
[INFO] [stdout]     |
[INFO] [stdout] 498 | pub struct XLarge {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 499 |     data: [u8; 2048],
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `XLarge` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_full_histogram` is never used
[INFO] [stdout]    --> nexus-slab/examples/perf_stress_test.rs:828:4
[INFO] [stdout]     |
[INFO] [stdout] 828 | fn print_full_histogram(name: &str, samples: &mut [u64]) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> nexus-slab/tests/macro_tests.rs:133:24
[INFO] [stdout]     |
[INFO] [stdout] 133 |     pub struct Tracker(pub u64);
[INFO] [stdout]     |                ------- ^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> nexus-slab/tests/macro_tests.rs:157:24
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub struct Tracker(pub u64);
[INFO] [stdout]     |                ------- ^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> nexus-slab/tests/macro_tests.rs:392:24
[INFO] [stdout]     |
[INFO] [stdout] 392 |     pub struct Tracker(pub u64);
[INFO] [stdout]     |                ------- ^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> nexus-slab/examples/perf_vs_box.rs:176:17
[INFO] [stdout]     |
[INFO] [stdout] 176 |             let start = rdtsc_start();
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> nexus-slab/examples/perf_vs_box.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |             let end = rdtsc_end();
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `price`, `quantity`, and `flags` are never read
[INFO] [stdout]   --> nexus-slab/examples/perf_vs_box.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub struct TestValue {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 59 |     id: u64,
[INFO] [stdout] 60 |     price: u64,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 61 |     quantity: u64,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 62 |     flags: u64,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TestValue` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]    --> nexus-slab/examples/perf_vs_box.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 178 |                    drop(black_box(std::mem::replace(
[INFO] [stdout]     |   _________________^    -
[INFO] [stdout]     |  |______________________|
[INFO] [stdout] 179 | ||                     &mut boxes.get(idx).map(|_| ()),
[INFO] [stdout] 180 | ||                     None,
[INFO] [stdout] 181 | ||                 )));
[INFO] [stdout]     | ||__________________-^
[INFO] [stdout]     | |___________________|
[INFO] [stdout]     |                     argument has type `Option<()>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 178 ~                 let _ = black_box(std::mem::replace(
[INFO] [stdout] 179 |                     &mut boxes.get(idx).map(|_| ()),
[INFO] [stdout] 180 |                     None,
[INFO] [stdout] 181 ~                 ));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 04s
[INFO] running `Command { std: "docker" "inspect" "1eb592ab82750125ac292c87b37493a1f7dcd1765616aeb25228fbeeed8161f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eb592ab82750125ac292c87b37493a1f7dcd1765616aeb25228fbeeed8161f9", kill_on_drop: false }`
[INFO] [stdout] 1eb592ab82750125ac292c87b37493a1f7dcd1765616aeb25228fbeeed8161f9
