[INFO] cloning repository https://github.com/dunnock/poll_oneoff_tests
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dunnock/poll_oneoff_tests" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdunnock%2Fpoll_oneoff_tests", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdunnock%2Fpoll_oneoff_tests'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 412f7b2fe903dade36b97c9863d3339939bd4bcb
[INFO] testing dunnock/poll_oneoff_tests against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdunnock%2Fpoll_oneoff_tests" "/workspace/builds/worker-32/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dunnock/poll_oneoff_tests on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-32/source/.cargo/config
[INFO] started tweaking git repo https://github.com/dunnock/poll_oneoff_tests
[INFO] finished tweaking git repo https://github.com/dunnock/poll_oneoff_tests
[INFO] tweaked toml for git repo https://github.com/dunnock/poll_oneoff_tests written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] crate git repo https://github.com/dunnock/poll_oneoff_tests already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76bd0404274f7349cd315f1d15636cab12252755b4cf98fdd1220e095b91e675
[INFO] running `Command { std: "docker" "start" "-a" "76bd0404274f7349cd315f1d15636cab12252755b4cf98fdd1220e095b91e675", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76bd0404274f7349cd315f1d15636cab12252755b4cf98fdd1220e095b91e675", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76bd0404274f7349cd315f1d15636cab12252755b4cf98fdd1220e095b91e675", kill_on_drop: false }`
[INFO] [stdout] 76bd0404274f7349cd315f1d15636cab12252755b4cf98fdd1220e095b91e675
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63f9b93bf6f1b6624bf2531ed2c6b2238e230ce3ef713c660856d3ed69ccc6c3
[INFO] running `Command { std: "docker" "start" "-a" "63f9b93bf6f1b6624bf2531ed2c6b2238e230ce3ef713c660856d3ed69ccc6c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasi v0.7.0
[INFO] [stderr]    Compiling poll_oneoff_tests v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `wasi` in `os`
[INFO] [stdout]  --> src/main.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::os::wasi::io::AsRawFd;
[INFO] [stdout]   |              ^^^^ could not find `wasi` in `os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(wasi_ext)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_raw_fd` found for struct `File` in the current scope
[INFO] [stdout]   --> src/main.rs:79:43
[INFO] [stdout]    |
[INFO] [stdout] 79 |     println!("File descriptor: {}", input.as_raw_fd());
[INFO] [stdout]    |                                           ^^^^^^^^^ method not found in `File`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 2  | use std::os::unix::io::AsRawFd;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_raw_fd` found for struct `File` in the current scope
[INFO] [stdout]   --> src/main.rs:82:19
[INFO] [stdout]    |
[INFO] [stdout] 82 |         fd: input.as_raw_fd()
[INFO] [stdout]    |                   ^^^^^^^^^ method not found in `File`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 2  | use std::os::unix::io::AsRawFd;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `poll_oneoff_tests` due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "63f9b93bf6f1b6624bf2531ed2c6b2238e230ce3ef713c660856d3ed69ccc6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63f9b93bf6f1b6624bf2531ed2c6b2238e230ce3ef713c660856d3ed69ccc6c3", kill_on_drop: false }`
[INFO] [stdout] 63f9b93bf6f1b6624bf2531ed2c6b2238e230ce3ef713c660856d3ed69ccc6c3