[INFO] fetching crate effect-monad 0.3.1...
[INFO] testing effect-monad-0.3.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate effect-monad 0.3.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate effect-monad 0.3.1 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 effect-monad 0.3.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate effect-monad 0.3.1
[INFO] tweaked toml for crates.io crate effect-monad 0.3.1 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] 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] 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] 6e880ba1f58ae5fbb3ebfa2f425fbf201c0b9624c00d9e7e80c196c69905df2b
[INFO] running `Command { std: "docker" "start" "-a" "6e880ba1f58ae5fbb3ebfa2f425fbf201c0b9624c00d9e7e80c196c69905df2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e880ba1f58ae5fbb3ebfa2f425fbf201c0b9624c00d9e7e80c196c69905df2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e880ba1f58ae5fbb3ebfa2f425fbf201c0b9624c00d9e7e80c196c69905df2b", kill_on_drop: false }`
[INFO] [stdout] 6e880ba1f58ae5fbb3ebfa2f425fbf201c0b9624c00d9e7e80c196c69905df2b
[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] 1495e37149d1bef60526970e2f21e7c9e33d89b7811cf1630260f8cf27f3cd99
[INFO] running `Command { std: "docker" "start" "-a" "1495e37149d1bef60526970e2f21e7c9e33d89b7811cf1630260f8cf27f3cd99", kill_on_drop: false }`
[INFO] [stderr]    Compiling effect-monad v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(fn_traits, unboxed_closures)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(fn_traits, unboxed_closures)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0059]: type parameter to bare `FnOnce` trait must be a tuple
[INFO] [stdout]   --> src/lib.rs:29:15
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl<T, Args> FnOnce<Args> for ResolveFn<T> {
[INFO] [stdout]    |               ^^^^^^^^^^^^ the trait `Tuple` is not implemented for `Args`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `FnOnce`
[INFO] [stdout]   --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:242:1
[INFO] [stdout] help: consider restricting type parameter `Args`
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl<T, Args: core::marker::Tuple> FnOnce<Args> for ResolveFn<T> {
[INFO] [stdout]    |             +++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: functions with the "rust-call" ABI must take a single non-self tuple argument
[INFO] [stdout]   --> src/lib.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     extern "rust-call" fn call_once(self, _: Args) -> Self::Output {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Tuple` is not implemented for `Args`
[INFO] [stdout]    |
[INFO] [stdout] help: consider restricting type parameter `Args`
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl<T, Args: core::marker::Tuple> FnOnce<Args> for ResolveFn<T> {
[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: E0059, E0277, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0059`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `effect-monad` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "1495e37149d1bef60526970e2f21e7c9e33d89b7811cf1630260f8cf27f3cd99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1495e37149d1bef60526970e2f21e7c9e33d89b7811cf1630260f8cf27f3cd99", kill_on_drop: false }`
[INFO] [stdout] 1495e37149d1bef60526970e2f21e7c9e33d89b7811cf1630260f8cf27f3cd99
