[INFO] fetching crate compio-io 0.1.0-beta.1...
[INFO] testing compio-io-0.1.0-beta.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate compio-io 0.1.0-beta.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate compio-io 0.1.0-beta.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate compio-io 0.1.0-beta.1
[INFO] finished tweaking crates.io crate compio-io 0.1.0-beta.1
[INFO] tweaked toml for crates.io crate compio-io 0.1.0-beta.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded compio-buf v0.2.0-beta.1
[INFO] [stderr]   Downloaded aligned-array v1.0.1
[INFO] [stderr]   Downloaded os_pipe v1.1.5
[INFO] [stderr]   Downloaded compio-runtime v0.2.0-beta.3
[INFO] [stderr]   Downloaded compio-log v0.1.0-beta.1
[INFO] [stderr]   Downloaded compio-driver v0.2.0-beta.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83520ffa7cfcbbf39f77b05ad05d618a7fbb8e780193724099b2dcbdeaa6504c
[INFO] running `Command { std: "docker" "start" "-a" "83520ffa7cfcbbf39f77b05ad05d618a7fbb8e780193724099b2dcbdeaa6504c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83520ffa7cfcbbf39f77b05ad05d618a7fbb8e780193724099b2dcbdeaa6504c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83520ffa7cfcbbf39f77b05ad05d618a7fbb8e780193724099b2dcbdeaa6504c", kill_on_drop: false }`
[INFO] [stdout] 83520ffa7cfcbbf39f77b05ad05d618a7fbb8e780193724099b2dcbdeaa6504c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efed893bfffab4de51d6337d22dab84beae418c683c6404f03c75bbf42c39bca
[INFO] running `Command { std: "docker" "start" "-a" "efed893bfffab4de51d6337d22dab84beae418c683c6404f03c75bbf42c39bca", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling compio-buf v0.2.0-beta.1
[INFO] [stderr]    Compiling compio-io v0.1.0-beta.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]   --> src/buffer.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl Buffer {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 99 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "efed893bfffab4de51d6337d22dab84beae418c683c6404f03c75bbf42c39bca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efed893bfffab4de51d6337d22dab84beae418c683c6404f03c75bbf42c39bca", kill_on_drop: false }`
[INFO] [stdout] efed893bfffab4de51d6337d22dab84beae418c683c6404f03c75bbf42c39bca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3cf7544655ae4ab412eb75d0b617ecb161d6353eed077fc0b7a358cc96c7ae8
[INFO] running `Command { std: "docker" "start" "-a" "e3cf7544655ae4ab412eb75d0b617ecb161d6353eed077fc0b7a358cc96c7ae8", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.18
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling smallvec v1.11.2
[INFO] [stderr]    Compiling async-task v4.7.0
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling socket2 v0.5.5
[INFO] [stderr]    Compiling os_pipe v1.1.5
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]   --> src/buffer.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl Buffer {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 99 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling compio-log v0.1.0-beta.1
[INFO] [stderr]    Compiling crossbeam-queue v0.3.10
[INFO] [stderr]    Compiling crossbeam-channel v0.5.10
[INFO] [stderr]    Compiling compio-driver v0.2.0-beta.3
[INFO] [stdout] error: You must choose at least one of these features: ["io-uring", "polling"]
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/compio-driver-0.2.0-beta.3/src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | compile_error!("You must choose at least one of these features: [\"io-uring\", \"polling\"]");
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `polling`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/compio-driver-0.2.0-beta.3/src/poll/mod.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use polling::{Event, Events, Poller};
[INFO] [stdout]    |     ^^^^^^^ use of undeclared crate or module `polling`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `polling`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/compio-driver-0.2.0-beta.3/src/poll/op.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use polling::Event;
[INFO] [stdout]    |     ^^^^^^^ use of undeclared crate or module `polling`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compio-driver` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e3cf7544655ae4ab412eb75d0b617ecb161d6353eed077fc0b7a358cc96c7ae8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3cf7544655ae4ab412eb75d0b617ecb161d6353eed077fc0b7a358cc96c7ae8", kill_on_drop: false }`
[INFO] [stdout] e3cf7544655ae4ab412eb75d0b617ecb161d6353eed077fc0b7a358cc96c7ae8
