[INFO] fetching crate abi_stable 0.8.4...
[INFO] checking abi_stable-0.8.4 against beta for pr-78714
[INFO] extracting crate abi_stable 0.8.4 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate abi_stable 0.8.4 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate abi_stable 0.8.4
[INFO] finished tweaking crates.io crate abi_stable 0.8.4
[INFO] tweaked toml for crates.io crate abi_stable 0.8.4 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] 1cfc4e028ec6642f6953f5b69bd5394112987bd8e168d530ca5d66b52bc4d1a3
[INFO] running `Command { std: "docker" "start" "-a" "1cfc4e028ec6642f6953f5b69bd5394112987bd8e168d530ca5d66b52bc4d1a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cfc4e028ec6642f6953f5b69bd5394112987bd8e168d530ca5d66b52bc4d1a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cfc4e028ec6642f6953f5b69bd5394112987bd8e168d530ca5d66b52bc4d1a3", kill_on_drop: false }`
[INFO] [stdout] 1cfc4e028ec6642f6953f5b69bd5394112987bd8e168d530ca5d66b52bc4d1a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d090aead63699466458648135ad910e2343132594db1785ebfa0a100142d6bfe
[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" "d090aead63699466458648135ad910e2343132594db1785ebfa0a100142d6bfe", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling typed-arena v1.5.0
[INFO] [stderr]     Checking generational-arena v0.2.8
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling core_extensions v0.1.18
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking abi_stable_shared v0.8.0
[INFO] [stderr]    Compiling as_derive_utils v0.8.3
[INFO] [stderr]     Checking csv v1.1.4
[INFO] [stderr]    Compiling abi_stable_derive v0.8.4
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking abi_stable v0.8.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/inline_storage.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |             std::mem::uninitialized()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 382 | / phantomdata_tuples!{
[INFO] [stdout] 383 | |     (T0,p0="0")
[INFO] [stdout] 384 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 385 | / phantomdata_tuples!{
[INFO] [stdout] 386 | |     (T0,p0="0")
[INFO] [stdout] 387 | |     (T1,p1="1")
[INFO] [stdout] 388 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 389 | / phantomdata_tuples!{
[INFO] [stdout] 390 | |     (T0,p0="0")
[INFO] [stdout] 391 | |     (T1,p1="1")
[INFO] [stdout] 392 | |     (T2,p2="2")
[INFO] [stdout] 393 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 394 | / phantomdata_tuples!{
[INFO] [stdout] 395 | |     (T0,p0="0")
[INFO] [stdout] 396 | |     (T1,p1="1")
[INFO] [stdout] 397 | |     (T2,p2="2")
[INFO] [stdout] 398 | |     (T3,p3="3")
[INFO] [stdout] 399 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 400 | / phantomdata_tuples!{
[INFO] [stdout] 401 | |     (T0,p0="0")
[INFO] [stdout] 402 | |     (T1,p1="1")
[INFO] [stdout] 403 | |     (T2,p2="2")
[INFO] [stdout] 404 | |     (T3,p3="3")
[INFO] [stdout] 405 | |     (T4,p4="4")
[INFO] [stdout] 406 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 407 | / phantomdata_tuples!{
[INFO] [stdout] 408 | |     (T0,p0="0")
[INFO] [stdout] 409 | |     (T1,p1="1")
[INFO] [stdout] 410 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 413 | |     (T5,p5="5")
[INFO] [stdout] 414 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 415 | / phantomdata_tuples!{
[INFO] [stdout] 416 | |     (T0,p0="0")
[INFO] [stdout] 417 | |     (T1,p1="1")
[INFO] [stdout] 418 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 422 | |     (T6,p6="6")
[INFO] [stdout] 423 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 424 | / phantomdata_tuples!{
[INFO] [stdout] 425 | |     (T0,p0="0")
[INFO] [stdout] 426 | |     (T1,p1="1")
[INFO] [stdout] 427 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 432 | |     (T7,p7="7")
[INFO] [stdout] 433 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 434 | / phantomdata_tuples!{
[INFO] [stdout] 435 | |     (T0,p0="0")
[INFO] [stdout] 436 | |     (T1,p1="1")
[INFO] [stdout] 437 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 443 | |     (T8,p8="8")
[INFO] [stdout] 444 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 445 | / phantomdata_tuples!{
[INFO] [stdout] 446 | |     (T0,p0="0")
[INFO] [stdout] 447 | |     (T1,p1="1")
[INFO] [stdout] 448 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 455 | |     (T9,p9="9")
[INFO] [stdout] 456 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 457 | / phantomdata_tuples!{
[INFO] [stdout] 458 | |     (T0,p0="0")
[INFO] [stdout] 459 | |     (T1,p1="1")
[INFO] [stdout] 460 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 468 | |     (T10,p10="10")
[INFO] [stdout] 469 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 470 | / phantomdata_tuples!{
[INFO] [stdout] 471 | |     (T0,p0="0")
[INFO] [stdout] 472 | |     (T1,p1="1")
[INFO] [stdout] 473 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 482 | |     (T11,p11="11")
[INFO] [stdout] 483 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 484 | / phantomdata_tuples!{
[INFO] [stdout] 485 | |     (T0,p0="0")
[INFO] [stdout] 486 | |     (T1,p1="1")
[INFO] [stdout] 487 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 497 | |     (T12,p12="12")
[INFO] [stdout] 498 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 499 | / phantomdata_tuples!{
[INFO] [stdout] 500 | |     (T0,p0="0")
[INFO] [stdout] 501 | |     (T1,p1="1")
[INFO] [stdout] 502 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 513 | |     (T13,p13="13")
[INFO] [stdout] 514 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 515 | / phantomdata_tuples!{
[INFO] [stdout] 516 | |     (T0,p0="0")
[INFO] [stdout] 517 | |     (T1,p1="1")
[INFO] [stdout] 518 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 530 | |     (T14,p14="14")
[INFO] [stdout] 531 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 532 | / phantomdata_tuples!{
[INFO] [stdout] 533 | |     (T0,p0="0")
[INFO] [stdout] 534 | |     (T1,p1="1")
[INFO] [stdout] 535 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 548 | |     (T15,p15="15")
[INFO] [stdout] 549 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/inline_storage.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |             std::mem::uninitialized()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/erased_types/dyn_trait.rs:838:13
[INFO] [stdout]     |
[INFO] [stdout] 838 |             ManuallyDrop::new(unerasability);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 | #![deny(unused_must_use)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `crossbeam_channel::errors::RRecvError`, which is not FFI-safe
[INFO] [stdout]    --> src/external_types/crossbeam_channel/extern_fns.rs:108:50
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub(super) extern "C" fn recv(this:&Self) -> RResult<T,RRecvError>{
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]     = help: consider adding a member to this struct
[INFO] [stdout]     = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]    --> src/external_types/crossbeam_channel/errors.rs:66:1
[INFO] [stdout]     |
[INFO] [stdout] 66  | pub struct RRecvError;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/external_types/parking_lot/once.rs:510:12
[INFO] [stdout]     |
[INFO] [stdout] 510 |     runner:RunClosure,
[INFO] [stdout]     |            ^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/external_types/parking_lot/once.rs:521:12
[INFO] [stdout]     |
[INFO] [stdout] 521 |     runner:RunClosure,
[INFO] [stdout]     |            ^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]   --> src/library/c_abi_testing/functions.rs:51:43
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub(crate) extern "C" fn take_pair_a(pair:Tuple2<u16,()>)->u32{
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]   --> src/library/c_abi_testing/functions.rs:54:43
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub(crate) extern "C" fn take_pair_b(pair:Tuple2<(),u16>)->u32{
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]   --> src/library/c_abi_testing/functions.rs:65:47
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub(crate) extern "C" fn take_triple_a(triple:Tuple3<(),u16,u16>)->u64{
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]   --> src/library/c_abi_testing/functions.rs:69:47
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub(crate) extern "C" fn take_triple_b(triple:Tuple3<u16,(),u16>)->u64{
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]   --> src/library/c_abi_testing/functions.rs:73:47
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub(crate) extern "C" fn take_triple_c(triple:Tuple3<u16,u16,()>)->u64{
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:100:43
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub(crate) extern "C" fn take_2_pairs_a(a:Tuple2<(),u16>,b:Tuple2<(),u16>)->u64{
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:100:60
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub(crate) extern "C" fn take_2_pairs_a(a:Tuple2<(),u16>,b:Tuple2<(),u16>)->u64{
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:104:43
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub(crate) extern "C" fn take_2_pairs_b(a:Tuple2<u16,()>,b:Tuple2<u16,()>)->u64{
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:104:60
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub(crate) extern "C" fn take_2_pairs_b(a:Tuple2<u16,()>,b:Tuple2<u16,()>)->u64{
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `types::MyUnit`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:124:7
[INFO] [stdout]     |
[INFO] [stdout] 124 |     _:MyUnit,
[INFO] [stdout]     |       ^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a member to this struct
[INFO] [stdout]     = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]    --> src/library/c_abi_testing/types.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout] 4   | pub(crate) struct MyUnit;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `types::MyUnit`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:126:7
[INFO] [stdout]     |
[INFO] [stdout] 126 |     _:MyUnit,
[INFO] [stdout]     |       ^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a member to this struct
[INFO] [stdout]     = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]    --> src/library/c_abi_testing/types.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout] 4   | pub(crate) struct MyUnit;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `types::MyUnit`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:128:7
[INFO] [stdout]     |
[INFO] [stdout] 128 |     _:MyUnit,
[INFO] [stdout]     |       ^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a member to this struct
[INFO] [stdout]     = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]    --> src/library/c_abi_testing/types.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout] 4   | pub(crate) struct MyUnit;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `marker_type::NotCopyNotClone`, which is not FFI-safe
[INFO] [stdout]   --> src/std_types/map/extern_fns.rs:58:48
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub(super)extern "C" fn get_elem(&self,key:MapQuery<'_,K>)->Option<&V>{
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a member to this struct
[INFO] [stdout]    = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]   --> src/marker_type.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct NotCopyNotClone;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `marker_type::NotCopyNotClone`, which is not FFI-safe
[INFO] [stdout]   --> src/std_types/map/extern_fns.rs:64:56
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub(super)extern "C" fn get_mut_elem(&mut self,key:MapQuery<'_,K>)->Option<&mut V>{
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a member to this struct
[INFO] [stdout]    = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]   --> src/marker_type.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct NotCopyNotClone;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `marker_type::NotCopyNotClone`, which is not FFI-safe
[INFO] [stdout]   --> src/std_types/map/extern_fns.rs:70:56
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub(super)extern "C" fn remove_entry(&mut self,key:MapQuery<'_,K>)->ROption<Tuple2<K,V>>{
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a member to this struct
[INFO] [stdout]    = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]   --> src/marker_type.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct NotCopyNotClone;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_types/move_ptr.rs:214:9
[INFO] [stdout]     |
[INFO] [stdout] 214 |         ManuallyDrop::new(this);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/abi_stability/extra_checks.rs:656:1
[INFO] [stdout]     |
[INFO] [stdout] 656 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/abi_stability/extra_checks.rs:713:1
[INFO] [stdout]     |
[INFO] [stdout] 713 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/doc_examples.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[sabi_trait]
[INFO] [stdout]    | ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `abi_stable`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 382 | / phantomdata_tuples!{
[INFO] [stdout] 383 | |     (T0,p0="0")
[INFO] [stdout] 384 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 385 | / phantomdata_tuples!{
[INFO] [stdout] 386 | |     (T0,p0="0")
[INFO] [stdout] 387 | |     (T1,p1="1")
[INFO] [stdout] 388 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 389 | / phantomdata_tuples!{
[INFO] [stdout] 390 | |     (T0,p0="0")
[INFO] [stdout] 391 | |     (T1,p1="1")
[INFO] [stdout] 392 | |     (T2,p2="2")
[INFO] [stdout] 393 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 394 | / phantomdata_tuples!{
[INFO] [stdout] 395 | |     (T0,p0="0")
[INFO] [stdout] 396 | |     (T1,p1="1")
[INFO] [stdout] 397 | |     (T2,p2="2")
[INFO] [stdout] 398 | |     (T3,p3="3")
[INFO] [stdout] 399 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 400 | / phantomdata_tuples!{
[INFO] [stdout] 401 | |     (T0,p0="0")
[INFO] [stdout] 402 | |     (T1,p1="1")
[INFO] [stdout] 403 | |     (T2,p2="2")
[INFO] [stdout] 404 | |     (T3,p3="3")
[INFO] [stdout] 405 | |     (T4,p4="4")
[INFO] [stdout] 406 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 407 | / phantomdata_tuples!{
[INFO] [stdout] 408 | |     (T0,p0="0")
[INFO] [stdout] 409 | |     (T1,p1="1")
[INFO] [stdout] 410 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 413 | |     (T5,p5="5")
[INFO] [stdout] 414 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 415 | / phantomdata_tuples!{
[INFO] [stdout] 416 | |     (T0,p0="0")
[INFO] [stdout] 417 | |     (T1,p1="1")
[INFO] [stdout] 418 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 422 | |     (T6,p6="6")
[INFO] [stdout] 423 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 424 | / phantomdata_tuples!{
[INFO] [stdout] 425 | |     (T0,p0="0")
[INFO] [stdout] 426 | |     (T1,p1="1")
[INFO] [stdout] 427 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 432 | |     (T7,p7="7")
[INFO] [stdout] 433 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 434 | / phantomdata_tuples!{
[INFO] [stdout] 435 | |     (T0,p0="0")
[INFO] [stdout] 436 | |     (T1,p1="1")
[INFO] [stdout] 437 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 443 | |     (T8,p8="8")
[INFO] [stdout] 444 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 445 | / phantomdata_tuples!{
[INFO] [stdout] 446 | |     (T0,p0="0")
[INFO] [stdout] 447 | |     (T1,p1="1")
[INFO] [stdout] 448 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 455 | |     (T9,p9="9")
[INFO] [stdout] 456 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 457 | / phantomdata_tuples!{
[INFO] [stdout] 458 | |     (T0,p0="0")
[INFO] [stdout] 459 | |     (T1,p1="1")
[INFO] [stdout] 460 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 468 | |     (T10,p10="10")
[INFO] [stdout] 469 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 470 | / phantomdata_tuples!{
[INFO] [stdout] 471 | |     (T0,p0="0")
[INFO] [stdout] 472 | |     (T1,p1="1")
[INFO] [stdout] 473 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 482 | |     (T11,p11="11")
[INFO] [stdout] 483 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 484 | / phantomdata_tuples!{
[INFO] [stdout] 485 | |     (T0,p0="0")
[INFO] [stdout] 486 | |     (T1,p1="1")
[INFO] [stdout] 487 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 497 | |     (T12,p12="12")
[INFO] [stdout] 498 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 499 | / phantomdata_tuples!{
[INFO] [stdout] 500 | |     (T0,p0="0")
[INFO] [stdout] 501 | |     (T1,p1="1")
[INFO] [stdout] 502 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 513 | |     (T13,p13="13")
[INFO] [stdout] 514 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 515 | / phantomdata_tuples!{
[INFO] [stdout] 516 | |     (T0,p0="0")
[INFO] [stdout] 517 | |     (T1,p1="1")
[INFO] [stdout] 518 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 530 | |     (T14,p14="14")
[INFO] [stdout] 531 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]    --> src/abi_stability/stable_abi_trait.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                           i+=1;
[INFO] [stdout]     |                           ^
[INFO] [stdout] ...
[INFO] [stdout] 532 | / phantomdata_tuples!{
[INFO] [stdout] 533 | |     (T0,p0="0")
[INFO] [stdout] 534 | |     (T1,p1="1")
[INFO] [stdout] 535 | |     (T2,p2="2")
[INFO] [stdout] ...   |
[INFO] [stdout] 548 | |     (T15,p15="15")
[INFO] [stdout] 549 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/erased_types/dyn_trait.rs:838:13
[INFO] [stdout]     |
[INFO] [stdout] 838 |             ManuallyDrop::new(unerasability);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 | #![deny(unused_must_use)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `crossbeam_channel::errors::RRecvError`, which is not FFI-safe
[INFO] [stdout]    --> src/external_types/crossbeam_channel/extern_fns.rs:108:50
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub(super) extern "C" fn recv(this:&Self) -> RResult<T,RRecvError>{
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]     = help: consider adding a member to this struct
[INFO] [stdout]     = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]    --> src/external_types/crossbeam_channel/errors.rs:66:1
[INFO] [stdout]     |
[INFO] [stdout] 66  | pub struct RRecvError;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/external_types/parking_lot/once.rs:510:12
[INFO] [stdout]     |
[INFO] [stdout] 510 |     runner:RunClosure,
[INFO] [stdout]     |            ^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/external_types/parking_lot/once.rs:521:12
[INFO] [stdout]     |
[INFO] [stdout] 521 |     runner:RunClosure,
[INFO] [stdout]     |            ^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]   --> src/library/c_abi_testing/functions.rs:51:43
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub(crate) extern "C" fn take_pair_a(pair:Tuple2<u16,()>)->u32{
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]   --> src/library/c_abi_testing/functions.rs:54:43
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub(crate) extern "C" fn take_pair_b(pair:Tuple2<(),u16>)->u32{
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]   --> src/library/c_abi_testing/functions.rs:65:47
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub(crate) extern "C" fn take_triple_a(triple:Tuple3<(),u16,u16>)->u64{
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]   --> src/library/c_abi_testing/functions.rs:69:47
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub(crate) extern "C" fn take_triple_b(triple:Tuple3<u16,(),u16>)->u64{
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]   --> src/library/c_abi_testing/functions.rs:73:47
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub(crate) extern "C" fn take_triple_c(triple:Tuple3<u16,u16,()>)->u64{
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a struct instead
[INFO] [stdout]    = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:100:43
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub(crate) extern "C" fn take_2_pairs_a(a:Tuple2<(),u16>,b:Tuple2<(),u16>)->u64{
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:100:60
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub(crate) extern "C" fn take_2_pairs_a(a:Tuple2<(),u16>,b:Tuple2<(),u16>)->u64{
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:104:43
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub(crate) extern "C" fn take_2_pairs_b(a:Tuple2<u16,()>,b:Tuple2<u16,()>)->u64{
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `()`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:104:60
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub(crate) extern "C" fn take_2_pairs_b(a:Tuple2<u16,()>,b:Tuple2<u16,()>)->u64{
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a struct instead
[INFO] [stdout]     = note: tuples have unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `types::MyUnit`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:124:7
[INFO] [stdout]     |
[INFO] [stdout] 124 |     _:MyUnit,
[INFO] [stdout]     |       ^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a member to this struct
[INFO] [stdout]     = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]    --> src/library/c_abi_testing/types.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout] 4   | pub(crate) struct MyUnit;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `types::MyUnit`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:126:7
[INFO] [stdout]     |
[INFO] [stdout] 126 |     _:MyUnit,
[INFO] [stdout]     |       ^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a member to this struct
[INFO] [stdout]     = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]    --> src/library/c_abi_testing/types.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout] 4   | pub(crate) struct MyUnit;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `types::MyUnit`, which is not FFI-safe
[INFO] [stdout]    --> src/library/c_abi_testing/functions.rs:128:7
[INFO] [stdout]     |
[INFO] [stdout] 128 |     _:MyUnit,
[INFO] [stdout]     |       ^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider adding a member to this struct
[INFO] [stdout]     = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]    --> src/library/c_abi_testing/types.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout] 4   | pub(crate) struct MyUnit;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `marker_type::NotCopyNotClone`, which is not FFI-safe
[INFO] [stdout]   --> src/std_types/map/extern_fns.rs:58:48
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub(super)extern "C" fn get_elem(&self,key:MapQuery<'_,K>)->Option<&V>{
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a member to this struct
[INFO] [stdout]    = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]   --> src/marker_type.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct NotCopyNotClone;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `marker_type::NotCopyNotClone`, which is not FFI-safe
[INFO] [stdout]   --> src/std_types/map/extern_fns.rs:64:56
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub(super)extern "C" fn get_mut_elem(&mut self,key:MapQuery<'_,K>)->Option<&mut V>{
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a member to this struct
[INFO] [stdout]    = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]   --> src/marker_type.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct NotCopyNotClone;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `marker_type::NotCopyNotClone`, which is not FFI-safe
[INFO] [stdout]   --> src/std_types/map/extern_fns.rs:70:56
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub(super)extern "C" fn remove_entry(&mut self,key:MapQuery<'_,K>)->ROption<Tuple2<K,V>>{
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider adding a member to this struct
[INFO] [stdout]    = note: this struct has no fields
[INFO] [stdout] note: the type is defined here
[INFO] [stdout]   --> src/marker_type.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct NotCopyNotClone;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_types/move_ptr.rs:214:9
[INFO] [stdout]     |
[INFO] [stdout] 214 |         ManuallyDrop::new(this);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/abi_stability/extra_checks.rs:656:1
[INFO] [stdout]     |
[INFO] [stdout] 656 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/abi_stability/extra_checks.rs:713:1
[INFO] [stdout]     |
[INFO] [stdout] 713 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/abi_stability/layout_tests/sabi_trait.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/abi_stability/layout_tests/sabi_trait.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/abi_stability/layout_tests/sabi_trait.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/abi_stability/layout_tests/sabi_trait.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     #[sabi_trait]
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/abi_stability/layout_tests/sabi_trait.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 |     #[sabi_trait]
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/abi_stability/layout_tests/sabi_trait.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     #[sabi_trait]
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/abi_stability/layout_tests/sabi_trait.rs:131:5
[INFO] [stdout]     |
[INFO] [stdout] 131 |     #[sabi_trait]
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/abi_stability/layout_tests/sabi_trait.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 139 |     #[sabi_trait]
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/examples.rs:77:1
[INFO] [stdout]    |
[INFO] [stdout] 77 | #[sabi_trait]
[INFO] [stdout]    | ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_trait/examples.rs:193:1
[INFO] [stdout]     |
[INFO] [stdout] 193 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_trait/examples.rs:209:1
[INFO] [stdout]     |
[INFO] [stdout] 209 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_trait/examples.rs:267:1
[INFO] [stdout]     |
[INFO] [stdout] 267 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_trait/examples.rs:328:1
[INFO] [stdout]     |
[INFO] [stdout] 328 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_trait/examples.rs:371:1
[INFO] [stdout]     |
[INFO] [stdout] 371 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/doc_examples.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[sabi_trait]
[INFO] [stdout]    | ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/tests.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/tests.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/tests.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/tests.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/tests.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_trait/tests.rs:159:1
[INFO] [stdout]     |
[INFO] [stdout] 159 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_trait/tests.rs:213:1
[INFO] [stdout]     |
[INFO] [stdout] 213 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_trait/tests.rs:223:1
[INFO] [stdout]     |
[INFO] [stdout] 223 | #[sabi_trait]
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/test_supertraits.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/test_supertraits.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]   --> src/sabi_trait/test_supertraits.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     #[sabi_trait]
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_trait/test_supertraits.rs:159:5
[INFO] [stdout]     |
[INFO] [stdout] 159 |     #[sabi_trait]
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `std::mem::ManuallyDrop::<T>::new` that must be used
[INFO] [stdout]    --> src/sabi_trait/test_supertraits.rs:205:5
[INFO] [stdout]     |
[INFO] [stdout] 205 |     #[sabi_trait]
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the wrapper, you can use `mem::forget` instead
[INFO] [stdout]     = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stdout] error: aborting due to 32 previous errors; 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d090aead63699466458648135ad910e2343132594db1785ebfa0a100142d6bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d090aead63699466458648135ad910e2343132594db1785ebfa0a100142d6bfe", kill_on_drop: false }`
[INFO] [stdout] d090aead63699466458648135ad910e2343132594db1785ebfa0a100142d6bfe