[INFO] fetching crate flex-alloc 0.0.5...
[INFO] checking flex-alloc-0.0.5 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate flex-alloc 0.0.5 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate flex-alloc 0.0.5
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate flex-alloc 0.0.5
[INFO] tweaked toml for crates.io crate flex-alloc 0.0.5 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flex-alloc 0.0.5 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 75 packages to latest compatible versions
[INFO] [stderr]       Adding allocator-api2 v0.2.21 (available: v0.4.0)
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.8.2)
[INFO] [stderr]       Adding rstest v0.23.0 (available: v0.26.1)
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 45c4cae21537e3a01bb4a44b7394547449d38ce68de7ff09a397d20f4981c893
[INFO] running `Command { std: "docker" "start" "-a" "45c4cae21537e3a01bb4a44b7394547449d38ce68de7ff09a397d20f4981c893", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45c4cae21537e3a01bb4a44b7394547449d38ce68de7ff09a397d20f4981c893", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45c4cae21537e3a01bb4a44b7394547449d38ce68de7ff09a397d20f4981c893", kill_on_drop: false }`
[INFO] [stdout] 45c4cae21537e3a01bb4a44b7394547449d38ce68de7ff09a397d20f4981c893
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 7fef7dc93fd7e2dded303ccf55be509a8d3263a4d1b512b923d0f72a064892a5
[INFO] running `Command { std: "docker" "start" "-a" "7fef7dc93fd7e2dded303ccf55be509a8d3263a4d1b512b923d0f72a064892a5", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.32
[INFO] [stderr]    Compiling winnow v1.0.3
[INFO] [stderr]     Checking half v2.7.1
[INFO] [stderr]    Compiling rstest_macros v0.23.0
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking clap v4.6.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking const-default v1.0.0
[INFO] [stderr]     Checking futures-channel v0.3.32
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]     Checking futures-timer v3.0.4
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking flex-alloc v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stdout] error: struct `VecData` is never constructed
[INFO] [stdout]   --> src/vec/buffer.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub struct VecData<T, I: Index = usize>(T, I);
[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: transmuting an integer to a pointer creates a pointer without provenance
[INFO] [stdout]    --> src/alloc.rs:289:40
[INFO] [stdout]     |
[INFO] [stdout] 289 |                 NonNull::new_unchecked(transmute(layout.align()))
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is dangerous because dereferencing the resulting pointer is undefined behavior
[INFO] [stdout]     = note: exposed provenance semantics can be used to create a pointer based on some previously exposed provenance
[INFO] [stdout]     = help: if you truly mean to create a pointer without provenance, use `std::ptr::without_provenance_mut`
[INFO] [stdout]     = help: for more information about transmute, see <https://doc.rust-lang.org/std/mem/fn.transmute.html#transmutation-between-pointers-and-integers>
[INFO] [stdout]     = help: for more information about exposed provenance, see <https://doc.rust-lang.org/std/ptr/index.html#exposed-provenance>
[INFO] [stdout]     = note: `#[warn(integer_to_ptr_transmutes)]` on by default
[INFO] [stdout] help: use `std::ptr::with_exposed_provenance_mut` instead to use a previously exposed provenance
[INFO] [stdout]     |
[INFO] [stdout] 289 -                 NonNull::new_unchecked(transmute(layout.align()))
[INFO] [stdout] 289 +                 NonNull::new_unchecked(std::ptr::with_exposed_provenance_mut::<u8>(layout.align()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flex-alloc` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7fef7dc93fd7e2dded303ccf55be509a8d3263a4d1b512b923d0f72a064892a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fef7dc93fd7e2dded303ccf55be509a8d3263a4d1b512b923d0f72a064892a5", kill_on_drop: false }`
[INFO] [stdout] 7fef7dc93fd7e2dded303ccf55be509a8d3263a4d1b512b923d0f72a064892a5
