[INFO] fetching crate futures-util 0.3.31...
[INFO] testing futures-util-0.3.31 against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940
[INFO] extracting crate futures-util 0.3.31 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate futures-util 0.3.31 on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-util 0.3.31
[INFO] finished tweaking crates.io crate futures-util 0.3.31
[INFO] tweaked toml for crates.io crate futures-util 0.3.31 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 70 packages to latest compatible versions
[INFO] [stderr]       Adding futures v0.1.31 (available: v0.3.31)
[INFO] [stderr]       Adding tokio v0.1.22 (available: v1.44.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bc682ee0863d3271784e0d79ff04963488688fbb979ab96c07714498209470a
[INFO] running `Command { std: "docker" "start" "-a" "4bc682ee0863d3271784e0d79ff04963488688fbb979ab96c07714498209470a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bc682ee0863d3271784e0d79ff04963488688fbb979ab96c07714498209470a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bc682ee0863d3271784e0d79ff04963488688fbb979ab96c07714498209470a", kill_on_drop: false }`
[INFO] [stdout] 4bc682ee0863d3271784e0d79ff04963488688fbb979ab96c07714498209470a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e35080becc957597deb52da8c6b474b3c1a94576e6f6563f79ee3274b66f6c43
[INFO] running `Command { std: "docker" "start" "-a" "e35080becc957597deb52da8c6b474b3c1a94576e6f6563f79ee3274b66f6c43", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling futures-util v0.3.31 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.26s
[INFO] running `Command { std: "docker" "inspect" "e35080becc957597deb52da8c6b474b3c1a94576e6f6563f79ee3274b66f6c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e35080becc957597deb52da8c6b474b3c1a94576e6f6563f79ee3274b66f6c43", kill_on_drop: false }`
[INFO] [stdout] e35080becc957597deb52da8c6b474b3c1a94576e6f6563f79ee3274b66f6c43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bc52f4f2163003752596afbe37e2ca0d916878f11db7fb2b75ac0e740250efc
[INFO] running `Command { std: "docker" "start" "-a" "5bc52f4f2163003752596afbe37e2ca0d916878f11db7fb2b75ac0e740250efc", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling log v0.4.26
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling futures-util v0.3.31 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 17.28s
[INFO] running `Command { std: "docker" "inspect" "5bc52f4f2163003752596afbe37e2ca0d916878f11db7fb2b75ac0e740250efc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bc52f4f2163003752596afbe37e2ca0d916878f11db7fb2b75ac0e740250efc", kill_on_drop: false }`
[INFO] [stdout] 5bc52f4f2163003752596afbe37e2ca0d916878f11db7fb2b75ac0e740250efc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 43674b78e342664e230ff1448efc8f7d856b5af96569dee753c6648aeaf3e83e
[INFO] running `Command { std: "docker" "start" "-a" "43674b78e342664e230ff1448efc8f7d856b5af96569dee753c6648aeaf3e83e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/futures_util-ba9315f4a2858f7f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test lock::mutex::tests::test_mutex_guard_debug_not_recurse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests futures_util
[INFO] [stderr] 
[INFO] [stderr] thread 'rustc' panicked at src/librustdoc/doctest.rs:853:46:
[INFO] [stderr] rustdoc needs a tempdir: Custom { kind: StorageFull, error: PathError { path: "/tmp/rustdoctestbpB78t", err: Os { code: 28, kind: StorageFull, message: "No space left on device" } } }
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x770d89226573 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hd8ebefbbcb1fe23a
[INFO] [stderr]    1:     0x770d89a059d8 - core::fmt::write::hef9d041e1d5d9592
[INFO] [stderr]    2:     0x770d8aacff91 - std::io::Write::write_fmt::hd7148372e3f24f7f
[INFO] [stderr]    3:     0x770d892263d2 - std::sys::backtrace::BacktraceLock::print::h263d323f217ce3a7
[INFO] [stderr]    4:     0x770d89228cf8 - std::panicking::default_hook::{{closure}}::h25050253f7dc0d3e
[INFO] [stderr]    5:     0x770d89228817 - std::panicking::default_hook::hf3291a4c87ea2887
[INFO] [stderr]    6:     0x770d8829319f - std[425a339ed90c4c63]::panicking::update_hook::<alloc[69a7e24b20818ec4]::boxed::Box<rustc_driver_impl[971c9bcd8bc81a97]::install_ice_hook::{closure#1}>>::{closure#0}
[INFO] [stderr]    7:     0x770d89229563 - std::panicking::rust_panic_with_hook::h3550dbeaa1041124
[INFO] [stderr]    8:     0x770d8922925a - std::panicking::begin_panic_handler::{{closure}}::hde0dd646a9e2b5b7
[INFO] [stderr]    9:     0x770d89226a39 - std::sys::backtrace::__rust_end_short_backtrace::haeb22ba48b4d728e
[INFO] [stderr]   10:     0x770d89228f1d - rust_begin_unwind
[INFO] [stderr]   11:     0x770d85c71890 - core::panicking::panic_fmt::hca923aa694825dc3
[INFO] [stderr]   12:     0x770d85d70006 - core::result::unwrap_failed::h1fd41ecb05679f50
[INFO] [stderr]   13:     0x5e91e980b301 - <rustdoc[415f01a90db83650]::doctest::IndividualTestOptions>::new
[INFO] [stderr]   14:     0x5e91e980cd2b - rustdoc[415f01a90db83650]::doctest::generate_test_desc_and_fn
[INFO] [stderr]   15:     0x5e91e980c289 - <rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>::add_test
[INFO] [stderr]   16:     0x5e91e9669acd - rustc_interface[3d0ee6dc9872a103]::passes::create_and_enter_global_ctxt::<core[13c546bb58fbbb36]::result::Result<core[13c546bb58fbbb36]::option::Option<rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>, alloc[69a7e24b20818ec4]::string::String>, rustdoc[415f01a90db83650]::doctest::run::{closure#2}::{closure#0}>::{closure#2}::{closure#0}
[INFO] [stderr]   17:     0x5e91e965b16a - rustc_interface[3d0ee6dc9872a103]::interface::run_compiler::<core[13c546bb58fbbb36]::result::Result<core[13c546bb58fbbb36]::option::Option<rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>, alloc[69a7e24b20818ec4]::string::String>, rustdoc[415f01a90db83650]::doctest::run::{closure#2}>::{closure#1}
[INFO] [stderr]   18:     0x5e91e95e6abc - std[425a339ed90c4c63]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[3d0ee6dc9872a103]::util::run_in_thread_with_globals<rustc_interface[3d0ee6dc9872a103]::util::run_in_thread_pool_with_globals<rustc_interface[3d0ee6dc9872a103]::interface::run_compiler<core[13c546bb58fbbb36]::result::Result<core[13c546bb58fbbb36]::option::Option<rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>, alloc[69a7e24b20818ec4]::string::String>, rustdoc[415f01a90db83650]::doctest::run::{closure#2}>::{closure#1}, core[13c546bb58fbbb36]::result::Result<core[13c546bb58fbbb36]::option::Option<rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>, alloc[69a7e24b20818ec4]::string::String>>::{closure#0}, core[13c546bb58fbbb36]::result::Result<core[13c546bb58fbbb36]::option::Option<rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>, alloc[69a7e24b20818ec4]::string::String>>::{closure#0}::{closure#0}, core[13c546bb58fbbb36]::result::Result<core[13c546bb58fbbb36]::option::Option<rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>, alloc[69a7e24b20818ec4]::string::String>>
[INFO] [stderr]   19:     0x5e91e9676f48 - <<std[425a339ed90c4c63]::thread::Builder>::spawn_unchecked_<rustc_interface[3d0ee6dc9872a103]::util::run_in_thread_with_globals<rustc_interface[3d0ee6dc9872a103]::util::run_in_thread_pool_with_globals<rustc_interface[3d0ee6dc9872a103]::interface::run_compiler<core[13c546bb58fbbb36]::result::Result<core[13c546bb58fbbb36]::option::Option<rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>, alloc[69a7e24b20818ec4]::string::String>, rustdoc[415f01a90db83650]::doctest::run::{closure#2}>::{closure#1}, core[13c546bb58fbbb36]::result::Result<core[13c546bb58fbbb36]::option::Option<rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>, alloc[69a7e24b20818ec4]::string::String>>::{closure#0}, core[13c546bb58fbbb36]::result::Result<core[13c546bb58fbbb36]::option::Option<rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>, alloc[69a7e24b20818ec4]::string::String>>::{closure#0}::{closure#0}, core[13c546bb58fbbb36]::result::Result<core[13c546bb58fbbb36]::option::Option<rustdoc[415f01a90db83650]::doctest::CreateRunnableDocTests>, alloc[69a7e24b20818ec4]::string::String>>::{closure#1} as core[13c546bb58fbbb36]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   20:     0x770d8a8f8cab - std::sys::pal::unix::thread::Thread::new::thread_start::hfbde3a90511cd82d
[INFO] [stderr]   21:     0x770d8c0c0ac3 - <unknown>
[INFO] [stderr]   22:     0x770d8c151a04 - clone
[INFO] [stderr]   23:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] error: the compiler unexpectedly panicked. this is a bug.
[INFO] [stderr] 
[INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-rustdoc&template=ice.md
[INFO] [stderr] 
[INFO] [stderr] note: please make sure that you have updated to the latest nightly
[INFO] [stderr] 
[INFO] [stderr] warning: the ICE couldn't be written to `/opt/rustwide/workdir/rustc-ice-2025-03-14T20_01_24-10.txt`: Read-only file system (os error 30)
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.87.0-nightly (a7ce54db9 2025-03-11) running on x86_64-unknown-linux-gnu
[INFO] [stderr] 
[INFO] [stderr] note: compiler flags: --crate-type lib -C embed-bitcode=no
[INFO] [stderr] 
[INFO] [stderr] query stack during panic:
[INFO] [stderr] end of query stack
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "43674b78e342664e230ff1448efc8f7d856b5af96569dee753c6648aeaf3e83e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43674b78e342664e230ff1448efc8f7d856b5af96569dee753c6648aeaf3e83e", kill_on_drop: false }`
[INFO] [stdout] 43674b78e342664e230ff1448efc8f7d856b5af96569dee753c6648aeaf3e83e