[INFO] cloning repository https://github.com/FTP-rs/ftp-server-iold-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FTP-rs/ftp-server-iold-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFTP-rs%2Fftp-server-iold-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFTP-rs%2Fftp-server-iold-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 37558eaf69d09d65141d3cf8649eba78ccc95b51
[INFO] checking FTP-rs/ftp-server-iold-rs against master#5a45ab9738330fb317d49e3594c2db5248b1e971 for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFTP-rs%2Fftp-server-iold-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FTP-rs/ftp-server-iold-rs on toolchain 5a45ab9738330fb317d49e3594c2db5248b1e971
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FTP-rs/ftp-server-iold-rs
[INFO] finished tweaking git repo https://github.com/FTP-rs/ftp-server-iold-rs
[INFO] tweaked toml for git repo https://github.com/FTP-rs/ftp-server-iold-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/FTP-rs/ftp-server-iold-rs 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" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Updating git repository `https://github.com/antoyo/iold`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded winapi-i686-pc-windows-gnu v0.3.2
[INFO] [stderr]   Downloaded winapi-x86_64-pc-windows-gnu v0.3.2
[INFO] [stderr]   Downloaded winapi v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40d8b6a7153a2b6588df1df8da421cfbb511ab7de1426fbc41dc6864e770dc3c
[INFO] running `Command { std: "docker" "start" "-a" "40d8b6a7153a2b6588df1df8da421cfbb511ab7de1426fbc41dc6864e770dc3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40d8b6a7153a2b6588df1df8da421cfbb511ab7de1426fbc41dc6864e770dc3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40d8b6a7153a2b6588df1df8da421cfbb511ab7de1426fbc41dc6864e770dc3c", kill_on_drop: false }`
[INFO] [stdout] 40d8b6a7153a2b6588df1df8da421cfbb511ab7de1426fbc41dc6864e770dc3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec34ea0fb5f346d6721c8726bf01182e783abbed58364831782d041c60c8040f
[INFO] running `Command { std: "docker" "start" "-a" "ec34ea0fb5f346d6721c8726bf01182e783abbed58364831782d041c60c8040f", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]     Checking iold v0.1.0 (https://github.com/antoyo/iold#47f28d46)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | #![feature(generators, generator_trait)]
[INFO] [stdout]    |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: renamed to `coroutines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `std::ops::Generator`, `std::ops::GeneratorState`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:39:33
[INFO] [stdout]    |
[INFO] [stdout] 39 | use std::ops::{Deref, DerefMut, Generator, GeneratorState};
[INFO] [stdout]    |                                 ^^^^^^^^^  ^^^^^^^^^^^^^^ no `GeneratorState` in `ops`
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 no `Generator` in `ops`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Generator` in module `std::ops`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:122:30
[INFO] [stdout]     |
[INFO] [stdout] 122 |               impl ::std::ops::Generator<Yield = $crate::YieldValue, Return = $ret_typ> + 'a
[INFO] [stdout]     |                                ^^^^^^^^^ not found in `std::ops`
[INFO] [stdout] ...
[INFO] [stdout] 426 | /     async!(
[INFO] [stdout] 427 | |     pub fn accept_async(&self) -> io::Result<(TcpStream, SocketAddr)> {
[INFO] [stdout] 428 | |         handle_would_block!(self.accept(), |(stream, address)| {
[INFO] [stdout] 429 | |             stream.set_nonblocking(true)?;
[INFO] [stdout] ...   |
[INFO] [stdout] 433 | |     );
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `async` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: yield syntax is experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 226 |             handle_would_block!(self.write(buf))
[INFO] [stdout]     |             ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
[INFO] [stdout]     = help: add `#![feature(coroutines)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-01-30; consider upgrading it if it is out of date
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: yield syntax is experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                           yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 428 | /         handle_would_block!(self.accept(), |(stream, address)| {
[INFO] [stdout] 429 | |             stream.set_nonblocking(true)?;
[INFO] [stdout] 430 | |             (TcpStream { stream }, address)
[INFO] [stdout] 431 | |         })
[INFO] [stdout]     | |__________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
[INFO] [stdout]     = help: add `#![feature(coroutines)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-01-30; consider upgrading it if it is out of date
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: yield syntax is experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 478 |             handle_would_block!(self.write(buf))
[INFO] [stdout]     |             ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
[INFO] [stdout]     = help: add `#![feature(coroutines)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-01-30; consider upgrading it if it is out of date
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: yield syntax is experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 486 |             handle_would_block!(self.read(buf))
[INFO] [stdout]     |             ----------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
[INFO] [stdout]     = help: add `#![feature(coroutines)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-01-30; consider upgrading it if it is out of date
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: yield syntax is experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 226 |             handle_would_block!(self.write(buf))
[INFO] [stdout]     |             ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
[INFO] [stdout]     = help: add `#![feature(coroutines)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-01-30; consider upgrading it if it is out of date
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `yield` can only be used in `#[coroutine]` closures, or `gen` blocks
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 226 |             handle_would_block!(self.write(buf))
[INFO] [stdout]     |             ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `#[coroutine]` to make this closure a coroutine
[INFO] [stdout]     |
[INFO] [stdout] 225 |         #[coroutine] move || {
[INFO] [stdout]     |         ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: yield syntax is experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 478 |             handle_would_block!(self.write(buf))
[INFO] [stdout]     |             ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
[INFO] [stdout]     = help: add `#![feature(coroutines)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-01-30; consider upgrading it if it is out of date
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stdout] error: `yield` can only be used in `#[coroutine]` closures, or `gen` blocks
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 478 |             handle_would_block!(self.write(buf))
[INFO] [stdout]     |             ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `#[coroutine]` to make this closure a coroutine
[INFO] [stdout]     |
[INFO] [stdout] 477 |         #[coroutine] move || {
[INFO] [stdout]     |         ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: yield syntax is experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 486 |             handle_would_block!(self.read(buf))
[INFO] [stdout]     |             ----------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
[INFO] [stdout]     = help: add `#![feature(coroutines)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-01-30; consider upgrading it if it is out of date
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `yield` can only be used in `#[coroutine]` closures, or `gen` blocks
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                         yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 486 |             handle_would_block!(self.read(buf))
[INFO] [stdout]     |             ----------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `#[coroutine]` to make this closure a coroutine
[INFO] [stdout]     |
[INFO] [stdout] 485 |         #[coroutine] move || {
[INFO] [stdout]     |         ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: yield syntax is experimental
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                           yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 428 | /         handle_would_block!(self.accept(), |(stream, address)| {
[INFO] [stdout] 429 | |             stream.set_nonblocking(true)?;
[INFO] [stdout] 430 | |             (TcpStream { stream }, address)
[INFO] [stdout] 431 | |         })
[INFO] [stdout]     | |__________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
[INFO] [stdout]     = help: add `#![feature(coroutines)]` to the crate attributes to enable
[INFO] [stdout]     = note: this compiler was built on 2025-01-30; consider upgrading it if it is out of date
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `yield` can only be used in `#[coroutine]` closures, or `gen` blocks
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:138:25
[INFO] [stdout]     |
[INFO] [stdout] 138 |                           yield Fd($object.as_raw_fd_async());
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 428 | /         handle_would_block!(self.accept(), |(stream, address)| {
[INFO] [stdout] 429 | |             stream.set_nonblocking(true)?;
[INFO] [stdout] 430 | |             (TcpStream { stream }, address)
[INFO] [stdout] 431 | |         })
[INFO] [stdout]     | |__________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `handle_would_block` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `#[coroutine]` to make this closure a coroutine
[INFO] [stdout]     |
[INFO] [stdout] 124 |             #[coroutine] static move || {
[INFO] [stdout]     |             ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `generator_trait`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/iold-51b445143a9c2449/47f28d4/src/lib.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 | #![feature(generators, generator_trait)]
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0432, E0557, E0635, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `iold` (lib) due to 16 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ec34ea0fb5f346d6721c8726bf01182e783abbed58364831782d041c60c8040f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec34ea0fb5f346d6721c8726bf01182e783abbed58364831782d041c60c8040f", kill_on_drop: false }`
[INFO] [stdout] ec34ea0fb5f346d6721c8726bf01182e783abbed58364831782d041c60c8040f
