[INFO] cloning repository https://github.com/FractalFir/spyalloc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FractalFir/spyalloc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFractalFir%2Fspyalloc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFractalFir%2Fspyalloc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32084473455701798847dc2923a8224da674f3df
[INFO] checking FractalFir/spyalloc against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFractalFir%2Fspyalloc" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/FractalFir/spyalloc
[INFO] finished tweaking git repo https://github.com/FractalFir/spyalloc
[INFO] tweaked toml for git repo https://github.com/FractalFir/spyalloc written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/FractalFir/spyalloc on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/FractalFir/spyalloc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7df9498fe3101f5667f11d1e2ae91ba7f19c8a5f2f31ac50696b7d381beebfd1
[INFO] running `Command { std: "docker" "start" "-a" "7df9498fe3101f5667f11d1e2ae91ba7f19c8a5f2f31ac50696b7d381beebfd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7df9498fe3101f5667f11d1e2ae91ba7f19c8a5f2f31ac50696b7d381beebfd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7df9498fe3101f5667f11d1e2ae91ba7f19c8a5f2f31ac50696b7d381beebfd1", kill_on_drop: false }`
[INFO] [stdout] 7df9498fe3101f5667f11d1e2ae91ba7f19c8a5f2f31ac50696b7d381beebfd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3447db74c2b6e89d4e0f7bd633c13b2aac52553e176e96cc85984528ccfa6d33
[INFO] running `Command { std: "docker" "start" "-a" "3447db74c2b6e89d4e0f7bd633c13b2aac52553e176e96cc85984528ccfa6d33", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking miniz_oxide v0.8.5
[INFO] [stderr]     Checking spin v0.10.0
[INFO] [stderr]     Checking object v0.36.7
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]     Checking spyalloc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `backtrace::Symbol`
[INFO] [stdout]  --> src/alloc.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use backtrace::Symbol;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/alloc.rs:301:45
[INFO] [stdout]     |
[INFO] [stdout] 301 |             const SMALL_ENCODING_TOP: u32 = (1 << 12 - 1);
[INFO] [stdout]     |                                             ^           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 301 -             const SMALL_ENCODING_TOP: u32 = (1 << 12 - 1);
[INFO] [stdout] 301 +             const SMALL_ENCODING_TOP: u32 = 1 << 12 - 1 ;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `lazy_get` has been stable since 1.94.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:13:27
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(allocator_api, lazy_get)]
[INFO] [stdout]    |                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `backtrace::Symbol`
[INFO] [stdout]  --> src/alloc.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use backtrace::Symbol;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/alloc.rs:301:45
[INFO] [stdout]     |
[INFO] [stdout] 301 |             const SMALL_ENCODING_TOP: u32 = (1 << 12 - 1);
[INFO] [stdout]     |                                             ^           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 301 -             const SMALL_ENCODING_TOP: u32 = (1 << 12 - 1);
[INFO] [stdout] 301 +             const SMALL_ENCODING_TOP: u32 = 1 << 12 - 1 ;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `lazy_get` has been stable since 1.94.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:13:27
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(allocator_api, lazy_get)]
[INFO] [stdout]    |                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/bytecode.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         use std::io::Read;
[INFO] [stdout]   |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/alloc.rs:292:17
[INFO] [stdout]     |
[INFO] [stdout] 292 |             let mut poped = reminder.min(16);
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0133]: call to unsafe function `std::alloc::Allocator::deallocate` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/alloc.rs:341:9
[INFO] [stdout]     |
[INFO] [stdout] 341 |         self.deallocate(ptr, layout)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout] note: an unsafe function restricts its caller, but its body is safe by default
[INFO] [stdout]    --> src/alloc.rs:337:5
[INFO] [stdout]     |
[INFO] [stdout] 337 |     unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout]     = note: `#[warn(unsafe_op_in_unsafe_fn)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0133]: call to unsafe function `std::alloc::GlobalAlloc::alloc` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/alloc.rs:350:21
[INFO] [stdout]     |
[INFO] [stdout] 350 |             None => self.alloc(Layout::from_size_align(new_size, layout.align()).unwrap()),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout] note: an unsafe function restricts its caller, but its body is safe by default
[INFO] [stdout]    --> src/alloc.rs:348:5
[INFO] [stdout]     |
[INFO] [stdout] 348 |     unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0133]: call to unsafe function `std::alloc::Allocator::grow` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/alloc.rs:353:21
[INFO] [stdout]     |
[INFO] [stdout] 353 | /                     self.grow(
[INFO] [stdout] 354 | |                         ptr,
[INFO] [stdout] 355 | |                         layout,
[INFO] [stdout] 356 | |                         Layout::from_size_align(new_size, layout.align()).unwrap(),
[INFO] [stdout] 357 | |                     )
[INFO] [stdout]     | |_____________________^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0133]: call to unsafe function `std::alloc::Allocator::shrink` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/alloc.rs:361:21
[INFO] [stdout]     |
[INFO] [stdout] 361 | /                     self.shrink(
[INFO] [stdout] 362 | |                         ptr,
[INFO] [stdout] 363 | |                         layout,
[INFO] [stdout] 364 | |                         Layout::from_size_align(new_size, layout.align()).unwrap(),
[INFO] [stdout] 365 | |                     )
[INFO] [stdout]     | |_____________________^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/alloc.rs:376:19
[INFO] [stdout]     |
[INFO] [stdout] 376 |         let ptr = unsafe { self.backer.allocate(layout) }?;
[INFO] [stdout]     |                   ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/alloc.rs:409:19
[INFO] [stdout]     |
[INFO] [stdout] 409 |         let ptr = unsafe { self.backer.allocate_zeroed(layout) }?;
[INFO] [stdout]     |                   ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `zeroed`
[INFO] [stdout]    --> src/bytecode.rs:170:17
[INFO] [stdout]     |
[INFO] [stdout] 170 |                 zeroed,
[INFO] [stdout]     |                 ^^^^^^ help: try ignoring the field: `zeroed: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/bytecode.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |         use std::io::Read;
[INFO] [stdout]   |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `BacktraceElem` is never constructed
[INFO] [stdout]   --> src/bytecode.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct BacktraceElem<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `line`, `col`, and `symbol` are never read
[INFO] [stdout]   --> src/bytecode.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct BacktraceElem<'a> {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 26 |     name: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 27 |     line: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 28 |     col: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 29 |     symbol: &'a str,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_packed` is never used
[INFO] [stdout]   --> src/bytecode.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl Alignment {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn new_packed(packed: u8) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/alloc.rs:292:17
[INFO] [stdout]     |
[INFO] [stdout] 292 |             let mut poped = reminder.min(16);
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] [stdout] warning[E0133]: call to unsafe function `std::alloc::Allocator::deallocate` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/alloc.rs:341:9
[INFO] [stdout]     |
[INFO] [stdout] 341 |         self.deallocate(ptr, layout)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout] note: an unsafe function restricts its caller, but its body is safe by default
[INFO] [stdout]    --> src/alloc.rs:337:5
[INFO] [stdout]     |
[INFO] [stdout] 337 |     unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout]     = note: `#[warn(unsafe_op_in_unsafe_fn)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0133]: call to unsafe function `std::alloc::GlobalAlloc::alloc` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/alloc.rs:350:21
[INFO] [stdout]     |
[INFO] [stdout] 350 |             None => self.alloc(Layout::from_size_align(new_size, layout.align()).unwrap()),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout] note: an unsafe function restricts its caller, but its body is safe by default
[INFO] [stdout]    --> src/alloc.rs:348:5
[INFO] [stdout]     |
[INFO] [stdout] 348 |     unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0133]: call to unsafe function `std::alloc::Allocator::grow` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/alloc.rs:353:21
[INFO] [stdout]     |
[INFO] [stdout] 353 | /                     self.grow(
[INFO] [stdout] 354 | |                         ptr,
[INFO] [stdout] 355 | |                         layout,
[INFO] [stdout] 356 | |                         Layout::from_size_align(new_size, layout.align()).unwrap(),
[INFO] [stdout] 357 | |                     )
[INFO] [stdout]     | |_____________________^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0133]: call to unsafe function `std::alloc::Allocator::shrink` is unsafe and requires unsafe block
[INFO] [stdout]    --> src/alloc.rs:361:21
[INFO] [stdout]     |
[INFO] [stdout] 361 | /                     self.shrink(
[INFO] [stdout] 362 | |                         ptr,
[INFO] [stdout] 363 | |                         layout,
[INFO] [stdout] 364 | |                         Layout::from_size_align(new_size, layout.align()).unwrap(),
[INFO] [stdout] 365 | |                     )
[INFO] [stdout]     | |_____________________^ call to unsafe function
[INFO] [stdout]     |
[INFO] [stdout]     = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/unsafe-op-in-unsafe-fn.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/alloc.rs:376:19
[INFO] [stdout]     |
[INFO] [stdout] 376 |         let ptr = unsafe { self.backer.allocate(layout) }?;
[INFO] [stdout]     |                   ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/alloc.rs:409:19
[INFO] [stdout]     |
[INFO] [stdout] 409 |         let ptr = unsafe { self.backer.allocate_zeroed(layout) }?;
[INFO] [stdout]     |                   ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `zeroed`
[INFO] [stdout]    --> src/bytecode.rs:170:17
[INFO] [stdout]     |
[INFO] [stdout] 170 |                 zeroed,
[INFO] [stdout]     |                 ^^^^^^ help: try ignoring the field: `zeroed: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spyalloc` (lib) due to 1 previous error; 14 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/lib.rs:103:51
[INFO] [stdout]     |
[INFO] [stdout] 103 |     crate::bytecode::parse_res(&mut buff, |event, state| {
[INFO] [stdout]     |                                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/lib.rs:123:61
[INFO] [stdout]     |
[INFO] [stdout] 123 |     let res = crate::bytecode::parse_res(&mut buff, |event, state| {
[INFO] [stdout]     |                                                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `BacktraceElem` is never constructed
[INFO] [stdout]   --> src/bytecode.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct BacktraceElem<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `line`, `col`, and `symbol` are never read
[INFO] [stdout]   --> src/bytecode.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct BacktraceElem<'a> {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 26 |     name: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 27 |     line: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 28 |     col: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 29 |     symbol: &'a str,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_packed` is never used
[INFO] [stdout]   --> src/bytecode.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl Alignment {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn new_packed(packed: u8) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spyalloc` (lib test) due to 1 previous error; 16 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3447db74c2b6e89d4e0f7bd633c13b2aac52553e176e96cc85984528ccfa6d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3447db74c2b6e89d4e0f7bd633c13b2aac52553e176e96cc85984528ccfa6d33", kill_on_drop: false }`
[INFO] [stdout] 3447db74c2b6e89d4e0f7bd633c13b2aac52553e176e96cc85984528ccfa6d33
