[INFO] fetching crate showdown 0.3.1... [INFO] checking showdown-0.3.1 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1 [INFO] extracting crate showdown 0.3.1 into /workspace/builds/worker-8/source [INFO] validating manifest of crates.io crate showdown 0.3.1 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd [INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate showdown 0.3.1 [INFO] finished tweaking crates.io crate showdown 0.3.1 [INFO] tweaked toml for crates.io crate showdown 0.3.1 written to /workspace/builds/worker-8/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 669a8a81166be185b65fb7beba1bf7e6a09813e9afe308e247e5d6e121a2afe9 [INFO] running `"docker" "start" "-a" "669a8a81166be185b65fb7beba1bf7e6a09813e9afe308e247e5d6e121a2afe9"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking comparator v0.2.0 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.13 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking want v0.2.0 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking tokio-buf v0.1.1 [INFO] [stderr] Compiling proc-macro-hack v0.5.11 [INFO] [stderr] Checking native-tls v0.2.3 [INFO] [stderr] Checking serde_urlencoded v0.5.5 [INFO] [stderr] Checking tokio-threadpool v0.1.16 [INFO] [stderr] Checking cookie_store v0.7.0 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_chacha v0.1.1 [INFO] [stderr] error[E0053]: method `poll` has an incompatible type for trait [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:64:5 [INFO] [stderr] | [INFO] [stderr] 64 | fn poll(self: Pin<&mut Self>, waker: &Waker) -> Poll { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability [INFO] [stderr] | [INFO] [stderr] = note: expected type `fn(std::pin::Pin<&mut future::future_obj::LocalFutureObj<'a, T>>, &mut std::task::Context<'_>) -> std::task::Poll` [INFO] [stderr] found type `fn(std::pin::Pin<&mut future::future_obj::LocalFutureObj<'a, T>>, &std::task::Waker) -> std::task::Poll` [INFO] [stderr] [INFO] [stderr] error[E0053]: method `poll` has an incompatible type for trait [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:114:5 [INFO] [stderr] | [INFO] [stderr] 114 | fn poll(self: Pin<&mut Self>, waker: &Waker) -> Poll { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ in mutability [INFO] [stderr] | [INFO] [stderr] = note: expected type `fn(std::pin::Pin<&mut future::future_obj::FutureObj<'a, T>>, &mut std::task::Context<'_>) -> std::task::Poll` [INFO] [stderr] found type `fn(std::pin::Pin<&mut future::future_obj::FutureObj<'a, T>>, &std::task::Waker) -> std::task::Poll` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/mod.rs:86:19 [INFO] [stderr] | [INFO] [stderr] 86 | self.poll(waker) [INFO] [stderr] | ^^^^^ types differ in mutability [INFO] [stderr] | [INFO] [stderr] = note: expected type `&mut std::task::Context<'_>` [INFO] [stderr] found type `&std::task::Waker` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:118:44 [INFO] [stderr] | [INFO] [stderr] 118 | LocalFutureObj::poll(pinned_field, waker) [INFO] [stderr] | ^^^^^ types differ in mutability [INFO] [stderr] | [INFO] [stderr] = note: expected type `&mut std::task::Context<'_>` [INFO] [stderr] found type `&std::task::Waker` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:165:20 [INFO] [stderr] | [INFO] [stderr] 165 | F::poll(p, waker) [INFO] [stderr] | ^^^^^ types differ in mutability [INFO] [stderr] | [INFO] [stderr] = note: expected type `&mut std::task::Context<'_>` [INFO] [stderr] found type `&std::task::Waker` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:182:25 [INFO] [stderr] | [INFO] [stderr] 182 | F::poll(future, waker) [INFO] [stderr] | ^^^^^ types differ in mutability [INFO] [stderr] | [INFO] [stderr] = note: expected type `&mut std::task::Context<'_>` [INFO] [stderr] found type `&std::task::Waker` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:203:26 [INFO] [stderr] | [INFO] [stderr] 203 | F::poll(pin, waker) [INFO] [stderr] | ^^^^^ types differ in mutability [INFO] [stderr] | [INFO] [stderr] = note: expected type `&mut std::task::Context<'_>` [INFO] [stderr] found type `&std::task::Waker` [INFO] [stderr] [INFO] [stderr] error[E0308]: mismatched types [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:225:26 [INFO] [stderr] | [INFO] [stderr] 225 | F::poll(pin, waker) [INFO] [stderr] | ^^^^^ types differ in mutability [INFO] [stderr] | [INFO] [stderr] = note: expected type `&mut std::task::Context<'_>` [INFO] [stderr] found type `&std::task::Waker` [INFO] [stderr] [INFO] [stderr] error: aborting due to 8 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0053, E0308. [INFO] [stderr] For more information about an error, try `rustc --explain E0053`. [INFO] [stderr] error: could not compile `futures-core-preview`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "669a8a81166be185b65fb7beba1bf7e6a09813e9afe308e247e5d6e121a2afe9"` [INFO] running `"docker" "rm" "-f" "669a8a81166be185b65fb7beba1bf7e6a09813e9afe308e247e5d6e121a2afe9"` [INFO] [stdout] 669a8a81166be185b65fb7beba1bf7e6a09813e9afe308e247e5d6e121a2afe9