[INFO] cloning repository https://github.com/tarka/spawn-free
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tarka/spawn-free" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarka%2Fspawn-free", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarka%2Fspawn-free'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11186ed5d4ae94cae665caf9c2295291ea0cfa8c
[INFO] checking tarka/spawn-free against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarka%2Fspawn-free" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/tarka/spawn-free
[INFO] finished tweaking git repo https://github.com/tarka/spawn-free
[INFO] tweaked toml for git repo https://github.com/tarka/spawn-free written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tarka/spawn-free on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tarka/spawn-free 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded env_logger v0.11.8
[INFO] [stderr]   Downloaded unicode-ident v1.0.23
[INFO] [stderr]   Downloaded test-log-macros v0.2.19
[INFO] [stderr]   Downloaded test-log v0.2.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5da412f81137dc916c9800037e8da9e3e2014e8b4ca611cf486527aa01ddfe03
[INFO] running `Command { std: "docker" "start" "-a" "5da412f81137dc916c9800037e8da9e3e2014e8b4ca611cf486527aa01ddfe03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5da412f81137dc916c9800037e8da9e3e2014e8b4ca611cf486527aa01ddfe03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5da412f81137dc916c9800037e8da9e3e2014e8b4ca611cf486527aa01ddfe03", kill_on_drop: false }`
[INFO] [stdout] 5da412f81137dc916c9800037e8da9e3e2014e8b4ca611cf486527aa01ddfe03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d96d07cf1d59733155f61912b48991185983441fc3168378919b252949fb1db7
[INFO] running `Command { std: "docker" "start" "-a" "d96d07cf1d59733155f61912b48991185983441fc3168378919b252949fb1db7", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.23
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling rustix v1.1.3
[INFO] [stderr]     Checking env_filter v0.1.4
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]     Checking linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling io-uring v0.7.11
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking anstream v0.6.21
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]     Checking tracing-core v0.1.36
[INFO] [stderr]     Checking slab v0.4.12
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]     Checking futures-lite v2.6.1
[INFO] [stderr]     Checking env_logger v0.11.8
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling test-log-macros v0.2.19
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]     Checking polling v3.11.0
[INFO] [stderr]     Checking test-log v0.2.19
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking spawn-free v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(local_waker)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/rt.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 |     collections::{HashMap, VecDeque},
[INFO] [stdout]   |                            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/time.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{any::Any, cell::{Cell, RefCell}, pin::Pin, rc::Rc, task::{Context, Poll}, time::Duration};
[INFO] [stdout]   |                            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spawn-free` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(local_waker)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/rt.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 |     collections::{HashMap, VecDeque},
[INFO] [stdout]   |                            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]  --> src/time.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{any::Any, cell::{Cell, RefCell}, pin::Pin, rc::Rc, task::{Context, Poll}, time::Duration};
[INFO] [stdout]   |                            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spawn-free` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d96d07cf1d59733155f61912b48991185983441fc3168378919b252949fb1db7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d96d07cf1d59733155f61912b48991185983441fc3168378919b252949fb1db7", kill_on_drop: false }`
[INFO] [stdout] d96d07cf1d59733155f61912b48991185983441fc3168378919b252949fb1db7
