[INFO] fetching crate mfio 0.1.0...
[INFO] testing mfio-0.1.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mfio 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate mfio 0.1.0
[INFO] finished tweaking crates.io crate mfio 0.1.0
[INFO] tweaked toml for crates.io crate mfio 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mfio 0.1.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mfio 0.1.0 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" "+beta-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f64e14a3f0c24fd6073af3960b935f78ba245538ae94dfb423f0985a57c9daa4
[INFO] running `Command { std: "docker" "start" "-a" "f64e14a3f0c24fd6073af3960b935f78ba245538ae94dfb423f0985a57c9daa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f64e14a3f0c24fd6073af3960b935f78ba245538ae94dfb423f0985a57c9daa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f64e14a3f0c24fd6073af3960b935f78ba245538ae94dfb423f0985a57c9daa4", kill_on_drop: false }`
[INFO] [stdout] f64e14a3f0c24fd6073af3960b935f78ba245538ae94dfb423f0985a57c9daa4
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2dee6c88087d86d8558e47d31244547bad29d38a91967c63efe31c4f1cc94ed
[INFO] running `Command { std: "docker" "start" "-a" "e2dee6c88087d86d8558e47d31244547bad29d38a91967c63efe31c4f1cc94ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling semver v1.0.20
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling winnow v0.5.25
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]    Compiling futures-channel v0.3.29
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling indexmap v2.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.29
[INFO] [stderr]    Compiling cglue v0.2.14
[INFO] [stderr]    Compiling smallvec v1.11.2
[INFO] [stderr]    Compiling futures-io v0.3.29
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling tarc v0.1.4
[INFO] [stderr]    Compiling no-std-compat v0.4.1
[INFO] [stderr]    Compiling bytes v1.5.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling http v0.2.11
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling toml_edit v0.20.7
[INFO] [stderr]    Compiling rangemap v1.4.0
[INFO] [stderr]    Compiling bytemuck v1.14.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling proc-macro-crate v2.0.0
[INFO] [stderr]    Compiling futures v0.3.29
[INFO] [stderr]    Compiling pin-project v1.1.3
[INFO] [stderr]    Compiling cglue-gen v0.2.9
[INFO] [stderr]    Compiling mfio-derive v0.1.0
[INFO] [stderr]    Compiling cglue-macro v0.2.3
[INFO] [stderr]    Compiling mfio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/lib.rs:217:11
[INFO] [stdout]     |
[INFO] [stdout] 217 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/lib.rs:230:7
[INFO] [stdout]     |
[INFO] [stdout] 230 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]  --> src/futures_compat.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/futures_compat.rs:117:11
[INFO] [stdout]     |
[INFO] [stdout] 117 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]   --> src/futures_compat.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |     #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/futures_compat.rs:104:23
[INFO] [stdout]     |
[INFO] [stdout] 104 |             #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/io/packet/mod.rs:438:7
[INFO] [stdout]     |
[INFO] [stdout] 438 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/io/packet/mod.rs:456:7
[INFO] [stdout]     |
[INFO] [stdout] 456 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/io/packet/mod.rs:474:7
[INFO] [stdout]     |
[INFO] [stdout] 474 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_assign` is never used
[INFO] [stdout]  --> src/util.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) trait UsizeMath {
[INFO] [stdout]   |                  --------- method in this trait
[INFO] [stdout] 4 |     fn add_assign(&mut self, val: usize);
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_pos` is never used
[INFO] [stdout]   --> src/util.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) trait PosShift<Io>: CopyPos + UsizeMath {
[INFO] [stdout]    |                  -------- method in this trait
[INFO] [stdout] 43 |     fn add_pos(&mut self, out: usize, io: &Io);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/backend/mod.rs:86:20
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn acquire(&self, wake_flags: Option<Arc<AtomicU8>>) -> BackendHandle<B> {
[INFO] [stdout]    |                    ^^^^^ the lifetime is elided here            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn acquire(&self, wake_flags: Option<Arc<AtomicU8>>) -> BackendHandle<'_, B> {
[INFO] [stdout]    |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 108 |         mut handle: BackendHandle<B2>,
[INFO] [stdout] 109 |     ) -> BackendHandle<B> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 109 |     ) -> BackendHandle<'_, B> {
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:403:23
[INFO] [stdout]     |
[INFO] [stdout] 403 |     fn polling_handle(&self) -> Option<PollingHandle>;
[INFO] [stdout]     |                       ^^^^^            ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 403 |     fn polling_handle(&self) -> Option<PollingHandle<'_>>;
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:412:20
[INFO] [stdout]     |
[INFO] [stdout] 412 |     fn get_backend(&self) -> BackendHandle<Self::Backend>;
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 412 |     fn get_backend(&self) -> BackendHandle<'_, Self::Backend>;
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:422:9
[INFO] [stdout]     |
[INFO] [stdout] 422 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 423 |         future: F,
[INFO] [stdout] 424 |     ) -> (WithBackend<Self::Backend, F>, Option<PollingHandle>) {
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^         ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |           |
[INFO] [stdout]     |           the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 424 |     ) -> (WithBackend<'_, Self::Backend, F>, Option<PollingHandle<'_>>) {
[INFO] [stdout]     |                       +++                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/futures_compat.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn compat(&self) -> Compat<Self> {
[INFO] [stdout]     |               ^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |               |
[INFO] [stdout]     |               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn compat(&self) -> Compat<'_, Self> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/io/mod.rs:244:45
[INFO] [stdout]     |
[INFO] [stdout] 240 |         &'a self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 244 |     ) -> IoToFut<'a, Self, Perms, Param, T, PacketStream<O, Perms>> {
[INFO] [stdout]     |                  --                         ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  the same lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 244 |     ) -> IoToFut<'a, Self, Perms, Param, T, PacketStream<'a, O, Perms>> {
[INFO] [stdout]     |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/io/packet/output.rs:322:13
[INFO] [stdout]     |
[INFO] [stdout] 322 |     fn lock(&self) -> LockGuard<T, Perms> {
[INFO] [stdout]     |             ^^^^^     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |         |
[INFO] [stdout]     |             |         the same lifetime is hidden here
[INFO] [stdout]     |             |         the same lifetime is hidden here
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 322 |     fn lock(&self) -> LockGuard<'_, T, Perms> {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traits.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn read<T: Pod>(&self, pos: Pos) -> IoReadFut<Self, Pos, T> {
[INFO] [stdout]    |                     ^^^^^               ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn read<T: Pod>(&self, pos: Pos) -> IoReadFut<'_, Self, Pos, T> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 32.12s
[INFO] running `Command { std: "docker" "inspect" "e2dee6c88087d86d8558e47d31244547bad29d38a91967c63efe31c4f1cc94ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2dee6c88087d86d8558e47d31244547bad29d38a91967c63efe31c4f1cc94ed", kill_on_drop: false }`
[INFO] [stdout] e2dee6c88087d86d8558e47d31244547bad29d38a91967c63efe31c4f1cc94ed
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39d6a1a8c2923f487d0f81c3508737c349e1f8a481857d7192ebb6d099270e43
[INFO] running `Command { std: "docker" "start" "-a" "39d6a1a8c2923f487d0f81c3508737c349e1f8a481857d7192ebb6d099270e43", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling futures-io v0.3.29
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling rustix v0.38.26
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling linux-raw-sys v0.4.12
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling waker-fn v1.1.1
[INFO] [stderr]    Compiling fastrand v2.0.1
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling async-task v4.5.0
[INFO] [stderr]    Compiling futures-lite v2.1.0
[INFO] [stderr]    Compiling futures-lite v1.13.0
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling futures-channel v0.3.29
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]    Compiling concurrent-queue v2.4.0
[INFO] [stderr]    Compiling piper v0.2.1
[INFO] [stderr]    Compiling event-listener v4.0.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling event-listener-strategy v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling async-lock v3.2.0
[INFO] [stderr]    Compiling async-channel v2.1.1
[INFO] [stderr]    Compiling socket2 v0.4.10
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]    Compiling blocking v1.5.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]    Compiling cglue-gen v0.2.9
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling event-listener v3.1.0
[INFO] [stderr]    Compiling clap_lex v0.6.0
[INFO] [stderr]    Compiling ciborium-io v0.2.1
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling anstyle v1.0.4
[INFO] [stderr]    Compiling plotters-backend v0.3.5
[INFO] [stderr]    Compiling clap_builder v4.4.11
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]    Compiling plotters-svg v0.3.5
[INFO] [stderr]    Compiling ciborium-ll v0.2.1
[INFO] [stderr]    Compiling futures-executor v0.3.29
[INFO] [stderr]    Compiling futures v0.3.29
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling async-net v1.8.0
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]    Compiling async-executor v1.8.0
[INFO] [stderr]    Compiling async-channel v1.9.0
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling bytemuck_derive v1.5.0
[INFO] [stderr]    Compiling polling v3.3.1
[INFO] [stderr]    Compiling cglue-macro v0.2.3
[INFO] [stderr]    Compiling async-io v2.2.1
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling async-signal v0.2.5
[INFO] [stderr]    Compiling cglue v0.2.14
[INFO] [stderr]    Compiling async-process v1.8.1
[INFO] [stderr]    Compiling walkdir v2.4.0
[INFO] [stderr]    Compiling bytemuck v1.14.0
[INFO] [stderr]    Compiling smol v1.3.0
[INFO] [stderr]    Compiling tokio v1.34.0
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling is-terminal v0.4.9
[INFO] [stderr]    Compiling clap v4.4.11
[INFO] [stderr]    Compiling rayon v1.8.0
[INFO] [stderr]    Compiling plotters v0.3.5
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling ciborium v0.2.1
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling pollster v0.2.5
[INFO] [stderr]    Compiling mfio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/lib.rs:217:11
[INFO] [stdout]     |
[INFO] [stdout] 217 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/lib.rs:230:7
[INFO] [stdout]     |
[INFO] [stdout] 230 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]  --> src/futures_compat.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/futures_compat.rs:117:11
[INFO] [stdout]     |
[INFO] [stdout] 117 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]   --> src/futures_compat.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |     #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/futures_compat.rs:104:23
[INFO] [stdout]     |
[INFO] [stdout] 104 |             #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/io/packet/mod.rs:438:7
[INFO] [stdout]     |
[INFO] [stdout] 438 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/io/packet/mod.rs:456:7
[INFO] [stdout]     |
[INFO] [stdout] 456 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/io/packet/mod.rs:474:7
[INFO] [stdout]     |
[INFO] [stdout] 474 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stdout] warning: method `add_assign` is never used
[INFO] [stdout]  --> src/util.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) trait UsizeMath {
[INFO] [stdout]   |                  --------- method in this trait
[INFO] [stdout] 4 |     fn add_assign(&mut self, val: usize);
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_pos` is never used
[INFO] [stdout]   --> src/util.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) trait PosShift<Io>: CopyPos + UsizeMath {
[INFO] [stdout]    |                  -------- method in this trait
[INFO] [stdout] 43 |     fn add_pos(&mut self, out: usize, io: &Io);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/backend/mod.rs:86:20
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn acquire(&self, wake_flags: Option<Arc<AtomicU8>>) -> BackendHandle<B> {
[INFO] [stdout]    |                    ^^^^^ the lifetime is elided here            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn acquire(&self, wake_flags: Option<Arc<AtomicU8>>) -> BackendHandle<'_, B> {
[INFO] [stdout]    |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 108 |         mut handle: BackendHandle<B2>,
[INFO] [stdout] 109 |     ) -> BackendHandle<B> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 109 |     ) -> BackendHandle<'_, B> {
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:403:23
[INFO] [stdout]     |
[INFO] [stdout] 403 |     fn polling_handle(&self) -> Option<PollingHandle>;
[INFO] [stdout]     |                       ^^^^^            ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 403 |     fn polling_handle(&self) -> Option<PollingHandle<'_>>;
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:412:20
[INFO] [stdout]     |
[INFO] [stdout] 412 |     fn get_backend(&self) -> BackendHandle<Self::Backend>;
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 412 |     fn get_backend(&self) -> BackendHandle<'_, Self::Backend>;
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:422:9
[INFO] [stdout]     |
[INFO] [stdout] 422 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 423 |         future: F,
[INFO] [stdout] 424 |     ) -> (WithBackend<Self::Backend, F>, Option<PollingHandle>) {
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^         ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |           |
[INFO] [stdout]     |           the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 424 |     ) -> (WithBackend<'_, Self::Backend, F>, Option<PollingHandle<'_>>) {
[INFO] [stdout]     |                       +++                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/futures_compat.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn compat(&self) -> Compat<Self> {
[INFO] [stdout]     |               ^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |               |
[INFO] [stdout]     |               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn compat(&self) -> Compat<'_, Self> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/io/mod.rs:244:45
[INFO] [stdout]     |
[INFO] [stdout] 240 |         &'a self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 244 |     ) -> IoToFut<'a, Self, Perms, Param, T, PacketStream<O, Perms>> {
[INFO] [stdout]     |                  --                         ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  the same lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 244 |     ) -> IoToFut<'a, Self, Perms, Param, T, PacketStream<'a, O, Perms>> {
[INFO] [stdout]     |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/io/packet/output.rs:322:13
[INFO] [stdout]     |
[INFO] [stdout] 322 |     fn lock(&self) -> LockGuard<T, Perms> {
[INFO] [stdout]     |             ^^^^^     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |         |
[INFO] [stdout]     |             |         the same lifetime is hidden here
[INFO] [stdout]     |             |         the same lifetime is hidden here
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 322 |     fn lock(&self) -> LockGuard<'_, T, Perms> {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traits.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn read<T: Pod>(&self, pos: Pos) -> IoReadFut<Self, Pos, T> {
[INFO] [stdout]    |                     ^^^^^               ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn read<T: Pod>(&self, pos: Pos) -> IoReadFut<'_, Self, Pos, T> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/lib.rs:217:11
[INFO] [stdout]     |
[INFO] [stdout] 217 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/lib.rs:230:7
[INFO] [stdout]     |
[INFO] [stdout] 230 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]  --> src/futures_compat.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using a Cargo feature instead
[INFO] [stdout]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]            [lints.rust]
[INFO] [stdout]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/futures_compat.rs:117:11
[INFO] [stdout]     |
[INFO] [stdout] 117 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]   --> src/futures_compat.rs:28:15
[INFO] [stdout]    |
[INFO] [stdout] 28 |     #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/futures_compat.rs:104:23
[INFO] [stdout]     |
[INFO] [stdout] 104 |             #[cfg(not(mfio_assume_linear_types))]
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/io/packet/mod.rs:438:7
[INFO] [stdout]     |
[INFO] [stdout] 438 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/io/packet/mod.rs:456:7
[INFO] [stdout]     |
[INFO] [stdout] 456 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stdout]    --> src/io/packet/mod.rs:474:7
[INFO] [stdout]     |
[INFO] [stdout] 474 | #[cfg(mfio_assume_linear_types)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> examples/../src/sample.rs:279:23
[INFO] [stdout]     |
[INFO] [stdout] 279 |     fn polling_handle(&self) -> Option<PollingHandle> {
[INFO] [stdout]     |                       ^^^^^            ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 279 |     fn polling_handle(&self) -> Option<PollingHandle<'_>> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> examples/../src/sample.rs:283:20
[INFO] [stdout]     |
[INFO] [stdout] 283 |     fn get_backend(&self) -> BackendHandle<Self::Backend> {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 283 |     fn get_backend(&self) -> BackendHandle<'_, Self::Backend> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_assign` is never used
[INFO] [stdout]  --> src/util.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) trait UsizeMath {
[INFO] [stdout]   |                  --------- method in this trait
[INFO] [stdout] 4 |     fn add_assign(&mut self, val: usize);
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_pos` is never used
[INFO] [stdout]   --> src/util.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub(crate) trait PosShift<Io>: CopyPos + UsizeMath {
[INFO] [stdout]    |                  -------- method in this trait
[INFO] [stdout] 43 |     fn add_pos(&mut self, out: usize, io: &Io);
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/lib.rs:400:16
[INFO] [stdout]     |
[INFO] [stdout] 400 |         struct TestStruct {
[INFO] [stdout]     |                ^^^^^^^^^^ field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]    --> src/lib.rs:398:9
[INFO] [stdout]     |
[INFO] [stdout] 398 |         #[repr(C)]
[INFO] [stdout]     |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/backend/mod.rs:86:20
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn acquire(&self, wake_flags: Option<Arc<AtomicU8>>) -> BackendHandle<B> {
[INFO] [stdout]    |                    ^^^^^ the lifetime is elided here            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn acquire(&self, wake_flags: Option<Arc<AtomicU8>>) -> BackendHandle<'_, B> {
[INFO] [stdout]    |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 108 |         mut handle: BackendHandle<B2>,
[INFO] [stdout] 109 |     ) -> BackendHandle<B> {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 109 |     ) -> BackendHandle<'_, B> {
[INFO] [stdout]     |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:403:23
[INFO] [stdout]     |
[INFO] [stdout] 403 |     fn polling_handle(&self) -> Option<PollingHandle>;
[INFO] [stdout]     |                       ^^^^^            ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 403 |     fn polling_handle(&self) -> Option<PollingHandle<'_>>;
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:412:20
[INFO] [stdout]     |
[INFO] [stdout] 412 |     fn get_backend(&self) -> BackendHandle<Self::Backend>;
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 412 |     fn get_backend(&self) -> BackendHandle<'_, Self::Backend>;
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/backend/mod.rs:422:9
[INFO] [stdout]     |
[INFO] [stdout] 422 |         &self,
[INFO] [stdout]     |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 423 |         future: F,
[INFO] [stdout] 424 |     ) -> (WithBackend<Self::Backend, F>, Option<PollingHandle>) {
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^         ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |           |
[INFO] [stdout]     |           the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 424 |     ) -> (WithBackend<'_, Self::Backend, F>, Option<PollingHandle<'_>>) {
[INFO] [stdout]     |                       +++                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/futures_compat.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn compat(&self) -> Compat<Self> {
[INFO] [stdout]     |               ^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |               |
[INFO] [stdout]     |               the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn compat(&self) -> Compat<'_, Self> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/io/mod.rs:244:45
[INFO] [stdout]     |
[INFO] [stdout] 240 |         &'a self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 244 |     ) -> IoToFut<'a, Self, Perms, Param, T, PacketStream<O, Perms>> {
[INFO] [stdout]     |                  --                         ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  the same lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 244 |     ) -> IoToFut<'a, Self, Perms, Param, T, PacketStream<'a, O, Perms>> {
[INFO] [stdout]     |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/io/packet/output.rs:322:13
[INFO] [stdout]     |
[INFO] [stdout] 322 |     fn lock(&self) -> LockGuard<T, Perms> {
[INFO] [stdout]     |             ^^^^^     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |         |
[INFO] [stdout]     |             |         the same lifetime is hidden here
[INFO] [stdout]     |             |         the same lifetime is hidden here
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 322 |     fn lock(&self) -> LockGuard<'_, T, Perms> {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traits.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn read<T: Pod>(&self, pos: Pos) -> IoReadFut<Self, Pos, T> {
[INFO] [stdout]    |                     ^^^^^               ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn read<T: Pod>(&self, pos: Pos) -> IoReadFut<'_, Self, Pos, T> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sample.rs:279:23
[INFO] [stdout]     |
[INFO] [stdout] 279 |     fn polling_handle(&self) -> Option<PollingHandle> {
[INFO] [stdout]     |                       ^^^^^            ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 279 |     fn polling_handle(&self) -> Option<PollingHandle<'_>> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sample.rs:283:20
[INFO] [stdout]     |
[INFO] [stdout] 283 |     fn get_backend(&self) -> BackendHandle<Self::Backend> {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 283 |     fn get_backend(&self) -> BackendHandle<'_, Self::Backend> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "39d6a1a8c2923f487d0f81c3508737c349e1f8a481857d7192ebb6d099270e43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39d6a1a8c2923f487d0f81c3508737c349e1f8a481857d7192ebb6d099270e43", kill_on_drop: false }`
[INFO] [stdout] 39d6a1a8c2923f487d0f81c3508737c349e1f8a481857d7192ebb6d099270e43
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 13dad31d1d91d3bec25de96443671467ac40eccba6f4d1c94a8c15ae3ffb9c0c
[INFO] running `Command { std: "docker" "start" "-a" "13dad31d1d91d3bec25de96443671467ac40eccba6f4d1c94a8c15ae3ffb9c0c", kill_on_drop: false }`
[INFO] [stderr] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stderr]    --> src/lib.rs:217:11
[INFO] [stderr]     |
[INFO] [stderr] 217 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stderr]    --> src/lib.rs:230:7
[INFO] [stderr]     |
[INFO] [stderr] 230 | #[cfg(mfio_assume_linear_types)]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stderr]  --> src/futures_compat.rs:9:11
[INFO] [stderr]   |
[INFO] [stderr] 9 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: consider using a Cargo feature instead
[INFO] [stderr]   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]            [lints.rust]
[INFO] [stderr]            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stderr]   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stderr]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stderr]    --> src/futures_compat.rs:117:11
[INFO] [stderr]     |
[INFO] [stderr] 117 | #[cfg(not(mfio_assume_linear_types))]
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stderr]   --> src/futures_compat.rs:28:15
[INFO] [stderr]    |
[INFO] [stderr] 28 |     #[cfg(not(mfio_assume_linear_types))]
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a Cargo feature instead
[INFO] [stderr]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]             [lints.rust]
[INFO] [stderr]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stderr]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stderr]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stderr]    --> src/futures_compat.rs:104:23
[INFO] [stderr]     |
[INFO] [stderr] 104 |             #[cfg(not(mfio_assume_linear_types))]
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stderr]    --> src/io/packet/mod.rs:438:7
[INFO] [stderr]     |
[INFO] [stderr] 438 | #[cfg(mfio_assume_linear_types)]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stderr]    --> src/io/packet/mod.rs:456:7
[INFO] [stderr]     |
[INFO] [stderr] 456 | #[cfg(mfio_assume_linear_types)]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `mfio_assume_linear_types`
[INFO] [stderr]    --> src/io/packet/mod.rs:474:7
[INFO] [stderr]     |
[INFO] [stderr] 474 | #[cfg(mfio_assume_linear_types)]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(mfio_assume_linear_types)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(mfio_assume_linear_types)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: method `add_assign` is never used
[INFO] [stderr]  --> src/util.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub(crate) trait UsizeMath {
[INFO] [stderr]   |                  --------- method in this trait
[INFO] [stderr] 4 |     fn add_assign(&mut self, val: usize);
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `add_pos` is never used
[INFO] [stderr]   --> src/util.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub(crate) trait PosShift<Io>: CopyPos + UsizeMath {
[INFO] [stderr]    |                  -------- method in this trait
[INFO] [stderr] 43 |     fn add_pos(&mut self, out: usize, io: &Io);
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/backend/mod.rs:86:20
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn acquire(&self, wake_flags: Option<Arc<AtomicU8>>) -> BackendHandle<B> {
[INFO] [stderr]    |                    ^^^^^ the lifetime is elided here            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn acquire(&self, wake_flags: Option<Arc<AtomicU8>>) -> BackendHandle<'_, B> {
[INFO] [stderr]    |                                                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/backend/mod.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |         &self,
[INFO] [stderr]     |         ^^^^^ the lifetime is elided here
[INFO] [stderr] 108 |         mut handle: BackendHandle<B2>,
[INFO] [stderr] 109 |     ) -> BackendHandle<B> {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 109 |     ) -> BackendHandle<'_, B> {
[INFO] [stderr]     |                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/backend/mod.rs:403:23
[INFO] [stderr]     |
[INFO] [stderr] 403 |     fn polling_handle(&self) -> Option<PollingHandle>;
[INFO] [stderr]     |                       ^^^^^            ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 403 |     fn polling_handle(&self) -> Option<PollingHandle<'_>>;
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/backend/mod.rs:412:20
[INFO] [stderr]     |
[INFO] [stderr] 412 |     fn get_backend(&self) -> BackendHandle<Self::Backend>;
[INFO] [stderr]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 412 |     fn get_backend(&self) -> BackendHandle<'_, Self::Backend>;
[INFO] [stderr]     |                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/backend/mod.rs:422:9
[INFO] [stderr]     |
[INFO] [stderr] 422 |         &self,
[INFO] [stderr]     |         ^^^^^ the lifetime is elided here
[INFO] [stderr] 423 |         future: F,
[INFO] [stderr] 424 |     ) -> (WithBackend<Self::Backend, F>, Option<PollingHandle>) {
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^         ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |           |
[INFO] [stderr]     |           the same lifetime is hidden here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 424 |     ) -> (WithBackend<'_, Self::Backend, F>, Option<PollingHandle<'_>>) {
[INFO] [stderr]     |                       +++                                        ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/futures_compat.rs:101:15
[INFO] [stderr]     |
[INFO] [stderr] 101 |     fn compat(&self) -> Compat<Self> {
[INFO] [stderr]     |               ^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |               |
[INFO] [stderr]     |               the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 101 |     fn compat(&self) -> Compat<'_, Self> {
[INFO] [stderr]     |                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stderr]    --> src/io/mod.rs:244:45
[INFO] [stderr]     |
[INFO] [stderr] 240 |         &'a self,
[INFO] [stderr]     |          -- the lifetime is named here
[INFO] [stderr] ...
[INFO] [stderr] 244 |     ) -> IoToFut<'a, Self, Perms, Param, T, PacketStream<O, Perms>> {
[INFO] [stderr]     |                  --                         ^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  the same lifetime is named here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 244 |     ) -> IoToFut<'a, Self, Perms, Param, T, PacketStream<'a, O, Perms>> {
[INFO] [stderr]     |                                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/io/packet/output.rs:322:13
[INFO] [stderr]     |
[INFO] [stderr] 322 |     fn lock(&self) -> LockGuard<T, Perms> {
[INFO] [stderr]     |             ^^^^^     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |             |         |
[INFO] [stderr]     |             |         the same lifetime is hidden here
[INFO] [stderr]     |             |         the same lifetime is hidden here
[INFO] [stderr]     |             the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 322 |     fn lock(&self) -> LockGuard<'_, T, Perms> {
[INFO] [stderr]     |                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/traits.rs:58:21
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn read<T: Pod>(&self, pos: Pos) -> IoReadFut<Self, Pos, T> {
[INFO] [stderr]    |                     ^^^^^               ^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn read<T: Pod>(&self, pos: Pos) -> IoReadFut<'_, Self, Pos, T> {
[INFO] [stderr]    |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: `mfio` (lib) generated 20 warnings (run `cargo fix --lib -p mfio` to apply 9 suggestions)
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> examples/../src/sample.rs:279:23
[INFO] [stderr]     |
[INFO] [stderr] 279 |     fn polling_handle(&self) -> Option<PollingHandle> {
[INFO] [stderr]     |                       ^^^^^            ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 279 |     fn polling_handle(&self) -> Option<PollingHandle<'_>> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> examples/../src/sample.rs:283:20
[INFO] [stderr]     |
[INFO] [stderr] 283 |     fn get_backend(&self) -> BackendHandle<Self::Backend> {
[INFO] [stderr]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 283 |     fn get_backend(&self) -> BackendHandle<'_, Self::Backend> {
[INFO] [stderr]     |                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/lib.rs:400:16
[INFO] [stderr]     |
[INFO] [stderr] 400 |         struct TestStruct {
[INFO] [stderr]     |                ^^^^^^^^^^ field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing this field
[INFO] [stderr] 
[INFO] [stderr] warning: function `check` is never used
[INFO] [stderr]    --> src/lib.rs:398:9
[INFO] [stderr]     |
[INFO] [stderr] 398 |         #[repr(C)]
[INFO] [stderr]     |         ^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/sample.rs:279:23
[INFO] [stderr]     |
[INFO] [stderr] 279 |     fn polling_handle(&self) -> Option<PollingHandle> {
[INFO] [stderr]     |                       ^^^^^            ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 279 |     fn polling_handle(&self) -> Option<PollingHandle<'_>> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/sample.rs:283:20
[INFO] [stderr]     |
[INFO] [stderr] 283 |     fn get_backend(&self) -> BackendHandle<Self::Backend> {
[INFO] [stderr]     |                    ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 283 |     fn get_backend(&self) -> BackendHandle<'_, Self::Backend> {
[INFO] [stderr]     |                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: `mfio` (example "sample") generated 2 warnings (run `cargo fix --example "sample" -p mfio` to apply 2 suggestions)
[INFO] [stderr] warning: `mfio` (lib test) generated 24 warnings (20 duplicates) (run `cargo fix --lib -p mfio --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mfio-44d9a4d72fc7cffa)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test tests::drop_bare_stream ... ok
[INFO] [stdout] test tests::drop_bound_stream ... ok
[INFO] [stdout] test tests::oobe ... ok
[INFO] [stdout] test tests::single_elem_write ... ok
[INFO] [stdout] test tests::single_elem_write_and_read ... ok
[INFO] [stdout] test tests::simple_struct_write_and_read ... ok
[INFO] [stdout] test tests::single_elem_read ... ok
[INFO] [stdout] test tests::split_oobe_func ... ok
[INFO] [stdout] test tests::split_oobe ... ok
[INFO] [stdout] test tests::split_oobe_stream ... ok
[INFO] [stdout] test tests::two_elems ... ok
[INFO] [stdout] test tests::two_read_scopes ... ok
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::fully_drop_bound_stream' (19) panicked at src/io/packet/mod.rs:677:9:
[INFO] [stdout] assertion `left == right` failed: The packet has in-flight segments.
[INFO] [stdout]   left: 1
[INFO] [stdout]  right: 0
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5fa9a76f20d2 - std::backtrace_rs::backtrace::libunwind::trace::h16acf28769fcd909
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5fa9a76f20d2 - std::backtrace_rs::backtrace::trace_unsynchronized::hb5541aa5d4f92513
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5fa9a76f20d2 - std::sys::backtrace::_print_fmt::h8ac8268cb667a306
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5fa9a76f20d2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h47627beda0767f4c
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5fa9a770237f - core::fmt::rt::Argument::fmt::h686a01ad57c1c92a
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5fa9a770237f - core::fmt::write::h8a63064c67176fd8
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x5fa9a76bf583 - std::io::default_write_fmt::hd4797e693c0ec256
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5fa9a76bf583 - std::io::Write::write_fmt::h791e240ad2720c99
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5fa9a76cb752 - std::sys::backtrace::BacktraceLock::print::h4634d27c0afbaebb
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5fa9a76d040f - std::panicking::default_hook::{{closure}}::h23e0299d4738b766
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5fa9a76d02a1 - std::panicking::default_hook::hfeec6294e8751b62
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5fa9a762236e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3f5a16438cee2b4e
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2019:9
[INFO] [stdout]   12:     0x5fa9a762236e - test::test_main_with_exit_callback::{{closure}}::h9214498cef9aafc5
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5fa9a76d0a1f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hdb18da3e68df7464
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2019:9
[INFO] [stdout]   14:     0x5fa9a76d0a1f - std::panicking::panic_with_hook::hd57cd463d793ed79
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x5fa9a76d087a - std::panicking::panic_handler::{{closure}}::hddd6216c3fddee3b
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x5fa9a76cb889 - std::sys::backtrace::__rust_end_short_backtrace::h5e7a56f283378525
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5fa9a76b3d2d - __rustc[256c90bb7e548b45]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5fa9a770a110 - core::panicking::panic_fmt::hf19c198748ef6a95
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5fa9a7709f53 - core::panicking::assert_failed_inner::h709867d03648810d
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:439:23
[INFO] [stdout]   20:     0x5fa9a7709d07 - core::panicking::assert_failed::hde60253f6eeab206
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:399:5
[INFO] [stdout]   21:     0x5fa9a75cf6c6 - <mfio::io::packet::Packet<Perms> as core::ops::drop::Drop>::drop::h16cc9ff3f4ecbc34
[INFO] [stdout]                                at /opt/rustwide/workdir/src/io/packet/mod.rs:677:9
[INFO] [stdout]   22:     0x5fa9a75c594a - core::ptr::drop_in_place<mfio::io::packet::Packet<mfio::io::packet::Write>>::hf82257e9bf860887
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ptr/mod.rs:805:1
[INFO] [stdout]   23:     0x5fa9a75ce3a3 - mfio::io::packet::Packet<Perms>::new_buf::drop_pkt::ha902c2a5ecabbd88
[INFO] [stdout]                                at /opt/rustwide/workdir/src/io/packet/mod.rs:925:13
[INFO] [stdout]   24:     0x5fa9a76b36d9 - tarc::do_dyn_drop::hd416fc13174426f6
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tarc-0.1.4/src/lib.rs:73:9
[INFO] [stdout]   25:     0x5fa9a75fb39f - tarc::base_arc::<impl core::ops::drop::Drop for tarc::BaseArc<T>>::drop::hcbbc72ccd8baae55
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tarc-0.1.4/src/lib.rs:593:34
[INFO] [stdout]   26:     0x5fa9a75c637a - core::ptr::drop_in_place<tarc::BaseArc<mfio::io::packet::Packet<mfio::io::packet::Write>>>::h35e95b5acc74139b
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ptr/mod.rs:805:1
[INFO] [stdout]   27:     0x5fa9a75f824d - core::mem::drop::h2ec3bf7e1423aa07
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/mem/mod.rs:967:1
[INFO] [stdout]   28:     0x5fa9a75e596a - mfio::tests::fully_drop_bound_stream::hc1ad247f3aa91d12
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:492:9
[INFO] [stdout]   29:     0x5fa9a75e59c7 - mfio::tests::fully_drop_bound_stream::{{closure}}::hf9dbe7cf4258c4c2
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:480:33
[INFO] [stdout]   30:     0x5fa9a75c2286 - core::ops::function::FnOnce::call_once::he4e835263282af1a
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   31:     0x5fa9a76221bb - core::ops::function::FnOnce::call_once::h43f43c5185cf39c2
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32:     0x5fa9a76221bb - test::__rust_begin_short_backtrace::hc4fa634eb2764bdc
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:663:18
[INFO] [stdout]   33:     0x5fa9a76367d8 - test::run_test_in_process::{{closure}}::h9f4b799a5211b72a
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:686:74
[INFO] [stdout]   34:     0x5fa9a76367d8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::ha572bf7dc5230a8f
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   35:     0x5fa9a76367d8 - std::panicking::catch_unwind::do_call::hfd6ff51f25dd177b
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40
[INFO] [stdout]   36:     0x5fa9a76367d8 - std::panicking::catch_unwind::h8609b446221def5f
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19
[INFO] [stdout]   37:     0x5fa9a76367d8 - std::panic::catch_unwind::h362f73cc48531e26
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14
[INFO] [stdout]   38:     0x5fa9a76367d8 - test::run_test_in_process::hf52fd21d696aae67
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:686:27
[INFO] [stdout]   39:     0x5fa9a76367d8 - test::run_test::{{closure}}::h7e780b8354e6d007
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:607:43
[INFO] [stdout]   40:     0x5fa9a760f5a4 - test::run_test::{{closure}}::hdc2695f2276aad3e
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:637:41
[INFO] [stdout]   41:     0x5fa9a760f5a4 - std::sys::backtrace::__rust_begin_short_backtrace::h2555b2113ed90fc9
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   42:     0x5fa9a7612eda - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h99800d480987dfb6
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   43:     0x5fa9a7612eda - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hbbb69b5294b2221b
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   44:     0x5fa9a7612eda - std::panicking::catch_unwind::do_call::h495689350c27df20
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40
[INFO] [stdout]   45:     0x5fa9a7612eda - std::panicking::catch_unwind::hf22437c51d1b3740
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19
[INFO] [stdout]   46:     0x5fa9a7612eda - std::panic::catch_unwind::habda1a57de8231f8
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14
[INFO] [stdout]   47:     0x5fa9a7612eda - std::thread::Builder::spawn_unchecked_::{{closure}}::h5833d8dda8c7e80b
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   48:     0x5fa9a7612eda - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha2910283a5058402
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   49:     0x5fa9a76c6b7f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he4d85cb537521972
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2005:9
[INFO] [stdout]   50:     0x5fa9a76c6b7f - std::sys::thread::unix::Thread::new::thread_start::hbaf586a9e50a98cd
[INFO] [stdout]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   51:     0x7ef17df25aa4 - <unknown>
[INFO] [stdout]   52:     0x7ef17dfb2a64 - clone
[INFO] [stdout]   53:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] thread 'tests::fully_drop_bound_stream' (19) panicked at library/core/src/panicking.rs:230:5:
[INFO] [stderr] panic in a function that cannot unwind
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5fa9a76f20d2 - std::backtrace_rs::backtrace::libunwind::trace::h16acf28769fcd909
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    1:     0x5fa9a76f20d2 - std::backtrace_rs::backtrace::trace_unsynchronized::hb5541aa5d4f92513
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    2:     0x5fa9a76f20d2 - std::sys::backtrace::_print_fmt::h8ac8268cb667a306
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]    3:     0x5fa9a76f20d2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h47627beda0767f4c
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]    4:     0x5fa9a770237f - core::fmt::rt::Argument::fmt::h686a01ad57c1c92a
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]    5:     0x5fa9a770237f - core::fmt::write::h8a63064c67176fd8
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/mod.rs:1469:25
[INFO] [stderr]    6:     0x5fa9a76bf453 - std::io::default_write_fmt::hc257f38f86d39af6
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:639:11
[INFO] [stderr]    7:     0x5fa9a76bf453 - std::io::Write::write_fmt::h5e9b646cef91150b
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]    8:     0x5fa9a76cb752 - std::sys::backtrace::BacktraceLock::print::h4634d27c0afbaebb
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]    9:     0x5fa9a76d040f - std::panicking::default_hook::{{closure}}::h23e0299d4738b766
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:301:27
[INFO] [stderr]   10:     0x5fa9a76d0269 - std::panicking::default_hook::hfeec6294e8751b62
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:328:9
[INFO] [stderr]   11:     0x5fa9a762236e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3f5a16438cee2b4e
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2019:9
[INFO] [stderr]   12:     0x5fa9a762236e - test::test_main_with_exit_callback::{{closure}}::h9214498cef9aafc5
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:145:21
[INFO] [stderr]   13:     0x5fa9a76d0a1f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hdb18da3e68df7464
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2019:9
[INFO] [stderr]   14:     0x5fa9a76d0a1f - std::panicking::panic_with_hook::hd57cd463d793ed79
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:842:13
[INFO] [stderr]   15:     0x5fa9a76d0846 - std::panicking::panic_handler::{{closure}}::hddd6216c3fddee3b
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:700:13
[INFO] [stderr]   16:     0x5fa9a76cb889 - std::sys::backtrace::__rust_end_short_backtrace::h5e7a56f283378525
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]   17:     0x5fa9a76b3d2d - __rustc[256c90bb7e548b45]::rust_begin_unwind
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5
[INFO] [stderr]   18:     0x5fa9a7709e0d - core::panicking::panic_nounwind_fmt::runtime::hd5eea0fd564156db
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:122:22
[INFO] [stderr]   19:     0x5fa9a7709e0d - core::panicking::panic_nounwind_fmt::hd9aca48f58eaf762
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/intrinsics/mod.rs:2435:9
[INFO] [stderr]   20:     0x5fa9a7709d52 - core::panicking::panic_nounwind::hae432c7c88b713db
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:230:5
[INFO] [stderr]   21:     0x5fa9a7709f67 - core::panicking::panic_cannot_unwind::ha421018e5db36e13
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:342:5
[INFO] [stderr]   22:     0x5fa9a75ce39a - mfio::io::packet::Packet<Perms>::new_buf::drop_pkt::ha902c2a5ecabbd88
[INFO] [stderr]                                at /opt/rustwide/workdir/src/io/packet/mod.rs:924:9
[INFO] [stderr]   23:     0x5fa9a76b36d9 - tarc::do_dyn_drop::hd416fc13174426f6
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tarc-0.1.4/src/lib.rs:73:9
[INFO] [stderr]   24:     0x5fa9a75fb39f - tarc::base_arc::<impl core::ops::drop::Drop for tarc::BaseArc<T>>::drop::hcbbc72ccd8baae55
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tarc-0.1.4/src/lib.rs:593:34
[INFO] [stderr]   25:     0x5fa9a75c637a - core::ptr::drop_in_place<tarc::BaseArc<mfio::io::packet::Packet<mfio::io::packet::Write>>>::h35e95b5acc74139b
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ptr/mod.rs:805:1
[INFO] [stderr]   26:     0x5fa9a75f824d - core::mem::drop::h2ec3bf7e1423aa07
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/mem/mod.rs:967:1
[INFO] [stderr]   27:     0x5fa9a75e596a - mfio::tests::fully_drop_bound_stream::hc1ad247f3aa91d12
[INFO] [stderr]                                at /opt/rustwide/workdir/src/lib.rs:492:9
[INFO] [stderr]   28:     0x5fa9a75e59c7 - mfio::tests::fully_drop_bound_stream::{{closure}}::hf9dbe7cf4258c4c2
[INFO] [stderr]                                at /opt/rustwide/workdir/src/lib.rs:480:33
[INFO] [stderr]   29:     0x5fa9a75c2286 - core::ops::function::FnOnce::call_once::he4e835263282af1a
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   30:     0x5fa9a76221bb - core::ops::function::FnOnce::call_once::h43f43c5185cf39c2
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   31:     0x5fa9a76221bb - test::__rust_begin_short_backtrace::hc4fa634eb2764bdc
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:663:18
[INFO] [stderr]   32:     0x5fa9a76367d8 - test::run_test_in_process::{{closure}}::h9f4b799a5211b72a
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:686:74
[INFO] [stderr]   33:     0x5fa9a76367d8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::ha572bf7dc5230a8f
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   34:     0x5fa9a76367d8 - std::panicking::catch_unwind::do_call::hfd6ff51f25dd177b
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40
[INFO] [stderr]   35:     0x5fa9a76367d8 - std::panicking::catch_unwind::h8609b446221def5f
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19
[INFO] [stderr]   36:     0x5fa9a76367d8 - std::panic::catch_unwind::h362f73cc48531e26
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14
[INFO] [stderr]   37:     0x5fa9a76367d8 - test::run_test_in_process::hf52fd21d696aae67
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:686:27
[INFO] [stderr]   38:     0x5fa9a76367d8 - test::run_test::{{closure}}::h7e780b8354e6d007
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:607:43
[INFO] [stderr]   39:     0x5fa9a760f5a4 - test::run_test::{{closure}}::hdc2695f2276aad3e
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:637:41
[INFO] [stderr]   40:     0x5fa9a760f5a4 - std::sys::backtrace::__rust_begin_short_backtrace::h2555b2113ed90fc9
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:158:18
[INFO] [stderr]   41:     0x5fa9a7612eda - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h99800d480987dfb6
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/thread/mod.rs:562:17
[INFO] [stderr]   42:     0x5fa9a7612eda - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hbbb69b5294b2221b
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stderr]   43:     0x5fa9a7612eda - std::panicking::catch_unwind::do_call::h495689350c27df20
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40
[INFO] [stderr]   44:     0x5fa9a7612eda - std::panicking::catch_unwind::hf22437c51d1b3740
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19
[INFO] [stderr]   45:     0x5fa9a7612eda - std::panic::catch_unwind::habda1a57de8231f8
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14
[INFO] [stderr]   46:     0x5fa9a7612eda - std::thread::Builder::spawn_unchecked_::{{closure}}::h5833d8dda8c7e80b
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/thread/mod.rs:560:30
[INFO] [stderr]   47:     0x5fa9a7612eda - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha2910283a5058402
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   48:     0x5fa9a76c6b7f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he4d85cb537521972
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2005:9
[INFO] [stderr]   49:     0x5fa9a76c6b7f - std::sys::thread::unix::Thread::new::thread_start::hbaf586a9e50a98cd
[INFO] [stderr]                                at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stderr]   50:     0x7ef17df25aa4 - <unknown>
[INFO] [stderr]   51:     0x7ef17dfb2a64 - clone
[INFO] [stderr]   52:                0x0 - <unknown>
[INFO] [stderr] thread caused non-unwinding panic. aborting.
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/mfio-44d9a4d72fc7cffa` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "13dad31d1d91d3bec25de96443671467ac40eccba6f4d1c94a8c15ae3ffb9c0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13dad31d1d91d3bec25de96443671467ac40eccba6f4d1c94a8c15ae3ffb9c0c", kill_on_drop: false }`
[INFO] [stdout] 13dad31d1d91d3bec25de96443671467ac40eccba6f4d1c94a8c15ae3ffb9c0c
