[INFO] fetching crate signal-future 0.1.1...
[INFO] testing signal-future-0.1.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate signal-future 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate signal-future 0.1.1
[INFO] finished tweaking crates.io crate signal-future 0.1.1
[INFO] tweaked toml for crates.io crate signal-future 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate signal-future 0.1.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84644e76a210f40ea0b631e73380c3c808e623bd97da9c4c73bbd6152332b07f
[INFO] running `Command { std: "docker" "start" "-a" "84644e76a210f40ea0b631e73380c3c808e623bd97da9c4c73bbd6152332b07f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84644e76a210f40ea0b631e73380c3c808e623bd97da9c4c73bbd6152332b07f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84644e76a210f40ea0b631e73380c3c808e623bd97da9c4c73bbd6152332b07f", kill_on_drop: false }`
[INFO] [stdout] 84644e76a210f40ea0b631e73380c3c808e623bd97da9c4c73bbd6152332b07f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6f939ef93bc11a2e5497aceddebf0d06cada16b075e43ecc3fb07347f91dcad
[INFO] running `Command { std: "docker" "start" "-a" "c6f939ef93bc11a2e5497aceddebf0d06cada16b075e43ecc3fb07347f91dcad", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling signal-future v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "c6f939ef93bc11a2e5497aceddebf0d06cada16b075e43ecc3fb07347f91dcad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6f939ef93bc11a2e5497aceddebf0d06cada16b075e43ecc3fb07347f91dcad", kill_on_drop: false }`
[INFO] [stdout] c6f939ef93bc11a2e5497aceddebf0d06cada16b075e43ecc3fb07347f91dcad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fc4793bb7197c2d259f30ee17e7b44162b54b02a0629d0231e5abbbafdf94ce
[INFO] running `Command { std: "docker" "start" "-a" "2fc4793bb7197c2d259f30ee17e7b44162b54b02a0629d0231e5abbbafdf94ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling signal-future v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "2fc4793bb7197c2d259f30ee17e7b44162b54b02a0629d0231e5abbbafdf94ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fc4793bb7197c2d259f30ee17e7b44162b54b02a0629d0231e5abbbafdf94ce", kill_on_drop: false }`
[INFO] [stdout] 2fc4793bb7197c2d259f30ee17e7b44162b54b02a0629d0231e5abbbafdf94ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9b95c8f3772adc27d878068094133ba36925771f63d840f7993f6f65911ae197
[INFO] running `Command { std: "docker" "start" "-a" "9b95c8f3772adc27d878068094133ba36925771f63d840f7993f6f65911ae197", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/signal_future-923cafa36e6d6204)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests signal_future
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - SignalFuture (line 33) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - SignalFuture (line 33) stdout ----
[INFO] [stdout] error[E0425]: cannot find type `File` in this scope
[INFO] [stdout]   --> src/lib.rs:34:28
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct DelayedWriter { fd: File, pending: Mutex<Vec<(u64, Vec<u8>, SignalFutureController)>> }
[INFO] [stdout]    |                            ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 33 + use std::fs::File;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Mutex` in this scope
[INFO] [stdout]   --> src/lib.rs:34:43
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct DelayedWriter { fd: File, pending: Mutex<Vec<(u64, Vec<u8>, SignalFutureController)>> }
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout]    |                                           ^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 33 + use std::sync::Mutex;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `SignalFutureController` in this scope
[INFO] [stdout]   --> src/lib.rs:34:68
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct DelayedWriter { fd: File, pending: Mutex<Vec<(u64, Vec<u8>, SignalFutureController)>> }
[INFO] [stdout]    |                                                                    ^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct DelayedWriter<SignalFutureController> { fd: File, pending: Mutex<Vec<(u64, Vec<u8>, SignalFutureController)>> }
[INFO] [stdout]    |                     ++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `sleep` in this scope
[INFO] [stdout]   --> src/lib.rs:43:7
[INFO] [stdout]    |
[INFO] [stdout] 43 |       sleep(Duration::from_millis(500));
[INFO] [stdout]    |       ^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 33 + use std::thread::sleep;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Duration` in this scope
[INFO] [stdout]   --> src/lib.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |       sleep(Duration::from_millis(500));
[INFO] [stdout]    |             ^^^^^^^^ use of undeclared type `Duration`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 33 + use std::time::Duration;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `SignalFuture` in this scope
[INFO] [stdout]   --> src/lib.rs:37:26
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let (fut, fut_ctl) = SignalFuture::new();
[INFO] [stdout]    |                          ^^^^^^^^^^^^ use of undeclared type `SignalFuture`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - SignalFuture (line 33)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.14s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9b95c8f3772adc27d878068094133ba36925771f63d840f7993f6f65911ae197", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b95c8f3772adc27d878068094133ba36925771f63d840f7993f6f65911ae197", kill_on_drop: false }`
[INFO] [stdout] 9b95c8f3772adc27d878068094133ba36925771f63d840f7993f6f65911ae197
