[INFO] cloning repository https://github.com/stbuehler/rust-cofutures-poc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stbuehler/rust-cofutures-poc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstbuehler%2Frust-cofutures-poc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstbuehler%2Frust-cofutures-poc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cde9170e5a2b534ad6362d54231a581056ca77fd
[INFO] testing stbuehler/rust-cofutures-poc against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstbuehler%2Frust-cofutures-poc" "/workspace/builds/worker-38/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-38/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stbuehler/rust-cofutures-poc on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/stbuehler/rust-cofutures-poc
[INFO] finished tweaking git repo https://github.com/stbuehler/rust-cofutures-poc
[INFO] tweaked toml for git repo https://github.com/stbuehler/rust-cofutures-poc written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] crate git repo https://github.com/stbuehler/rust-cofutures-poc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-core-preview v0.3.0-alpha.13
[INFO] [stderr]   Downloaded futures-executor-preview v0.3.0-alpha.13
[INFO] [stderr]   Downloaded futures-io-preview v0.3.0-alpha.13
[INFO] [stderr]   Downloaded futures-channel-preview v0.3.0-alpha.13
[INFO] [stderr]   Downloaded futures-select-macro-preview v0.3.0-alpha.13
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.13
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.4
[INFO] [stderr]   Downloaded futures-util-preview v0.3.0-alpha.13
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10941ceb1a4946c7101feff1ced38699791ec90fd65d9d6332aa8c1fc2c362eb
[INFO] running `Command { std: "docker" "start" "-a" "10941ceb1a4946c7101feff1ced38699791ec90fd65d9d6332aa8c1fc2c362eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10941ceb1a4946c7101feff1ced38699791ec90fd65d9d6332aa8c1fc2c362eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10941ceb1a4946c7101feff1ced38699791ec90fd65d9d6332aa8c1fc2c362eb", kill_on_drop: false }`
[INFO] [stdout] 10941ceb1a4946c7101feff1ced38699791ec90fd65d9d6332aa8c1fc2c362eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77ae61beb8713245173f7027864c199f8f4d9e2054d57ea3a13232b90216a44f
[INFO] running `Command { std: "docker" "start" "-a" "77ae61beb8713245173f7027864c199f8f4d9e2054d57ea3a13232b90216a44f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling either v1.5.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.2
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling cofutures-inner v0.1.0 (/opt/rustwide/workdir/cofutures-inner)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> cofutures-inner/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generator_trait, futures_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `poll` has an incompatible type for trait
[INFO] [stdout]   --> cofutures-inner/src/lib.rs:82:36
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn poll(self: Pin<&mut Self>, lw: &Waker) -> Poll<Self::Output> {
[INFO] [stdout]    |                                       ^^^^^^
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       types differ in mutability
[INFO] [stdout]    |                                       help: change the parameter type to match the trait: `&mut Context<'_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(Pin<&mut CoAsync<Output, T, F>>, &mut Context<'_>) -> Poll<_>`
[INFO] [stdout]               found fn pointer `fn(Pin<&mut CoAsync<Output, T, F>>, &Waker) -> Poll<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr] error: could not compile `cofutures-inner`
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> cofutures-inner/src/lib.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 |             f.poll(waker)
[INFO] [stdout]    |                    ^^^^^ types differ in mutability
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut Context<'_>`
[INFO] [stdout]                       found reference `&Waker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 0 arguments were supplied
[INFO] [stdout]    --> cofutures-inner/src/lib.rs:98:48
[INFO] [stdout]     |
[INFO] [stdout] 98  |                 match unsafe { Pin::new_unchecked(running).resume() } {
[INFO] [stdout]     |                                                            ^^^^^^- supplied 0 arguments
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout] help: expected the unit value `()`; create it with empty parentheses
[INFO] [stdout]     |
[INFO] [stdout] 98  |                 match unsafe { Pin::new_unchecked(running).resume(()) } {
[INFO] [stdout]     |                                                                   ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] Some errors have detailed explanations: E0053, E0061, E0308, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "77ae61beb8713245173f7027864c199f8f4d9e2054d57ea3a13232b90216a44f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77ae61beb8713245173f7027864c199f8f4d9e2054d57ea3a13232b90216a44f", kill_on_drop: false }`
[INFO] [stdout] 77ae61beb8713245173f7027864c199f8f4d9e2054d57ea3a13232b90216a44f
