Describe Future invariants more precisely

[Diggsey]

Fixes #125050

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[rust-log-analyzer]

The job x86_64-gnu-tools failed! Check out the build log: (web) (plain)

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tests/pass-dep/tokio/file-io.rs ... FAILED
tests/pass-dep/libc/mmap.rs ... ok

FAILED TEST: tests/pass-dep/tokio/file-io.rs
command: MIRI_ENV_VAR_TEST="0" MIRI_TEMP="/tmp/miri-uitest-uQvNU3" RUST_BACKTRACE="1" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/miri" "--error-format=json" "--sysroot=/checkout/obj/build/x86_64-unknown-linux-gnu/miri-sysroot" "-Dwarnings" "-Dunused" "-Ainternal_features" "-Zui-testing" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/tests/pass-dep/tokio" "tests/pass-dep/tokio/file-io.rs" "-Zmiri-disable-isolation" "--extern" "cfg_if=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libcfg_if-55a32e410325a882.rlib" "--extern" "cfg_if=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libcfg_if-55a32e410325a882.rmeta" "--extern" "getrandom_01=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-77190f9b44a3c009.rlib" "--extern" "getrandom_01=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-77190f9b44a3c009.rmeta" "--extern" "getrandom_02=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-56888fca95a09bf8.rlib" "--extern" "getrandom_02=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-56888fca95a09bf8.rmeta" "--extern" "getrandom_03=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-a8fc577bb44b6d80.rlib" "--extern" "getrandom_03=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-a8fc577bb44b6d80.rmeta" "--extern" "libc=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/liblibc-dd98cac8117d550a.rlib" "--extern" "libc=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/liblibc-dd98cac8117d550a.rmeta" "--extern" "num_cpus=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libnum_cpus-7ab8becb6da559b7.rlib" "--extern" "num_cpus=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libnum_cpus-7ab8becb6da559b7.rmeta" "--extern" "page_size=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libpage_size-c34469ad90c5eb76.rlib" "--extern" "page_size=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libpage_size-c34469ad90c5eb76.rmeta" "--extern" "tempfile=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libtempfile-d40c54a83e8abae9.rlib" "--extern" "tempfile=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libtempfile-d40c54a83e8abae9.rmeta" "--extern" "tokio=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libtokio-539f2d149eae570a.rlib" "--extern" "tokio=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libtokio-539f2d149eae570a.rmeta" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/debug/deps" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps" "--edition" "2021"

error: test got exit status: 101, but expected 0
 = note: the compiler panicked

error: no output was expected
---
   4: test_create_and_write::{closure#0}
             at tests/pass-dep/tokio/file-io.rs:24:5
   5: main::{closure#0}
             at tests/pass-dep/tokio/file-io.rs:14:29
   6: tokio::runtime::park::CachedParkThread::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>::{closure#0}
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/park.rs:284:60
   7: tokio::task::coop::with_budget::<std::task::Poll<()>, {closure@tokio::runtime::park::CachedParkThread::block_on<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>::{closure#0}}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/task/coop/mod.rs:167:5
   8: tokio::task::coop::budget::<std::task::Poll<()>, {closure@tokio::runtime::park::CachedParkThread::block_on<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>::{closure#0}}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/task/coop/mod.rs:133:5
   9: tokio::runtime::park::CachedParkThread::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/park.rs:284:31
  10: tokio::runtime::context::blocking::BlockingRegionGuard::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/context/blocking.rs:66:9
  11: tokio::runtime::scheduler::multi_thread::MultiThread::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>::{closure#0}
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/scheduler/multi_thread/mod.rs:87:13
  12: tokio::runtime::context::runtime::enter_runtime::<{closure@tokio::runtime::scheduler::multi_thread::MultiThread::block_on<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>::{closure#0}}, ()>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/context/runtime.rs:65:16
  13: tokio::runtime::scheduler::multi_thread::MultiThread::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/scheduler/multi_thread/mod.rs:86:9
  14: tokio::runtime::Runtime::block_on_inner::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/runtime.rs:370:45
  15: tokio::runtime::Runtime::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/runtime.rs:342:13
  16: main
             at tests/pass-dep/tokio/file-io.rs:15:5
  17: <fn() as std::ops::FnOnce<()>>::call_once - shim(fn())
             at /checkout/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
---
   4: test_create_and_write::{closure#0}
             at tests/pass-dep/tokio/file-io.rs:24:5
   5: main::{closure#0}
             at tests/pass-dep/tokio/file-io.rs:14:29
   6: tokio::runtime::park::CachedParkThread::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>::{closure#0}
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/park.rs:284:60
   7: tokio::task::coop::with_budget::<std::task::Poll<()>, {closure@tokio::runtime::park::CachedParkThread::block_on<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>::{closure#0}}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/task/coop/mod.rs:167:5
   8: tokio::task::coop::budget::<std::task::Poll<()>, {closure@tokio::runtime::park::CachedParkThread::block_on<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>::{closure#0}}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/task/coop/mod.rs:133:5
   9: tokio::runtime::park::CachedParkThread::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/park.rs:284:31
  10: tokio::runtime::context::blocking::BlockingRegionGuard::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/context/blocking.rs:66:9
  11: tokio::runtime::scheduler::multi_thread::MultiThread::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>::{closure#0}
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/scheduler/multi_thread/mod.rs:87:13
  12: tokio::runtime::context::runtime::enter_runtime::<{closure@tokio::runtime::scheduler::multi_thread::MultiThread::block_on<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>::{closure#0}}, ()>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/context/runtime.rs:65:16
  13: tokio::runtime::scheduler::multi_thread::MultiThread::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/scheduler/multi_thread/mod.rs:86:9
  14: tokio::runtime::Runtime::block_on_inner::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/runtime.rs:370:45
  15: tokio::runtime::Runtime::block_on::<{async block@tests/pass-dep/tokio/file-io.rs:12:1: 12:15}>
             at /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.44.2/src/runtime/runtime.rs:342:13
  16: main
             at tests/pass-dep/tokio/file-io.rs:15:5
  17: <fn() as std::ops::FnOnce<()>>::call_once - shim(fn())
             at /checkout/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
---

Location:
   /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ui_test-0.29.2/src/lib.rs:369

Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.
error: test failed, to rerun pass `--test ui`

Caused by:
  process didn't exit successfully: `/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/release/deps/ui-f58affc77002becb` (exit status: 1)
Command has failed. Rerun with -v to see more details.
Build completed unsuccessfully in 0:05:11
  local time: Sun Jun  1 17:18:07 UTC 2025
  network time: Sun, 01 Jun 2025 17:18:07 GMT
##[error]Process completed with exit code 1.
Post job cleanup.