[INFO] cloning repository https://github.com/daviswahl/leaky-raft
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daviswahl/leaky-raft" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaviswahl%2Fleaky-raft", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaviswahl%2Fleaky-raft'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2409d85d3d584d4068111e42aae0f48747e5d85
[INFO] checking daviswahl/leaky-raft against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaviswahl%2Fleaky-raft" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/daviswahl/leaky-raft on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/daviswahl/leaky-raft
[INFO] finished tweaking git repo https://github.com/daviswahl/leaky-raft
[INFO] tweaked toml for git repo https://github.com/daviswahl/leaky-raft written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/daviswahl/leaky-raft already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1f66fb86bf8f03f4c61ca3a3e27e5a2f86601af25804b39428c69d522683e7f4
[INFO] running `Command { std: "docker" "start" "-a" "1f66fb86bf8f03f4c61ca3a3e27e5a2f86601af25804b39428c69d522683e7f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f66fb86bf8f03f4c61ca3a3e27e5a2f86601af25804b39428c69d522683e7f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f66fb86bf8f03f4c61ca3a3e27e5a2f86601af25804b39428c69d522683e7f4", kill_on_drop: false }`
[INFO] [stdout] 1f66fb86bf8f03f4c61ca3a3e27e5a2f86601af25804b39428c69d522683e7f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 808fb98721953f39aac86342eb109c10f1edf413755e90841ba87490c28bcaf6
[INFO] running `Command { std: "docker" "start" "-a" "808fb98721953f39aac86342eb109c10f1edf413755e90841ba87490c28bcaf6", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]     Checking futures v0.1.25
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling proc-macro-nested v0.1.2
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling cc v1.0.30
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.13
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling bincode v1.1.2
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stdout] error[E0053]: method `poll` has an incompatible type for trait
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:64:42
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn poll(self: Pin<&mut Self>, waker: &Waker) -> Poll<T> {
[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(std::pin::Pin<&mut future_obj::LocalFutureObj<'a, T>>, &mut Context<'_>) -> std::task::Poll<_>`
[INFO] [stdout]               found fn pointer `fn(std::pin::Pin<&mut future_obj::LocalFutureObj<'a, T>>, &std::task::Waker) -> std::task::Poll<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `poll` has an incompatible type for trait
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/future_obj.rs:114:42
[INFO] [stdout]     |
[INFO] [stdout] 114 |     fn poll(self: Pin<&mut Self>, waker: &Waker) -> Poll<T> {
[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(std::pin::Pin<&mut future_obj::FutureObj<'a, T>>, &mut Context<'_>) -> std::task::Poll<_>`
[INFO] [stdout]                found fn pointer `fn(std::pin::Pin<&mut future_obj::FutureObj<'a, T>>, &std::task::Waker) -> std::task::Poll<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /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] [stdout]     |
[INFO] [stdout] 118 |         LocalFutureObj::poll(pinned_field, waker)
[INFO] [stdout]     |                                            ^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected mutable reference `&mut Context<'_>`
[INFO] [stdout]                        found reference `&std::task::Waker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /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] [stdout]     |
[INFO] [stdout] 165 |         F::poll(p, waker)
[INFO] [stdout]     |                    ^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected mutable reference `&mut Context<'_>`
[INFO] [stdout]                        found reference `&std::task::Waker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /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] [stdout]     |
[INFO] [stdout] 182 |         F::poll(future, waker)
[INFO] [stdout]     |                         ^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected mutable reference `&mut Context<'_>`
[INFO] [stdout]                        found reference `&std::task::Waker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /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] [stdout]     |
[INFO] [stdout] 203 |             F::poll(pin, waker)
[INFO] [stdout]     |                          ^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected mutable reference `&mut Context<'_>`
[INFO] [stdout]                        found reference `&std::task::Waker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /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] [stdout]     |
[INFO] [stdout] 225 |             F::poll(pin, waker)
[INFO] [stdout]     |                          ^^^^^ types differ in mutability
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected mutable reference `&mut Context<'_>`
[INFO] [stdout]                        found reference `&std::task::Waker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-core-preview-0.3.0-alpha.13/src/future/mod.rs:86:19
[INFO] [stdout]    |
[INFO] [stdout] 86 |         self.poll(waker)
[INFO] [stdout]    |                   ^^^^^ types differ in mutability
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut Context<'_>`
[INFO] [stdout]                       found reference `&std::task::Waker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0053, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-core-preview` due to 9 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "808fb98721953f39aac86342eb109c10f1edf413755e90841ba87490c28bcaf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "808fb98721953f39aac86342eb109c10f1edf413755e90841ba87490c28bcaf6", kill_on_drop: false }`
[INFO] [stdout] 808fb98721953f39aac86342eb109c10f1edf413755e90841ba87490c28bcaf6