[INFO] cloning repository https://github.com/rust-mikrokontroller-praktikum/stm32f7-netscan [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-mikrokontroller-praktikum/stm32f7-netscan" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-mikrokontroller-praktikum%2Fstm32f7-netscan", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-mikrokontroller-praktikum%2Fstm32f7-netscan'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c51ac8be6a905ae6177fcd2d6aecd963a08316c7 [INFO] checking rust-mikrokontroller-praktikum/stm32f7-netscan against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-mikrokontroller-praktikum%2Fstm32f7-netscan" "/workspace/builds/worker-13/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rust-mikrokontroller-praktikum/stm32f7-netscan on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-13/source/.cargo/config [INFO] removed /workspace/builds/worker-13/source/rust-toolchain [INFO] started tweaking git repo https://github.com/rust-mikrokontroller-praktikum/stm32f7-netscan [INFO] finished tweaking git repo https://github.com/rust-mikrokontroller-praktikum/stm32f7-netscan [INFO] tweaked toml for git repo https://github.com/rust-mikrokontroller-praktikum/stm32f7-netscan written to /workspace/builds/worker-13/source/Cargo.toml [INFO] crate git repo https://github.com/rust-mikrokontroller-praktikum/stm32f7-netscan already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating git repository `https://github.com/rust-embedded/cortex-m-rt.git` [INFO] [stderr] Updating git repository `https://github.com/rust-lang-nursery/futures-rs.git` [INFO] [stderr] Updating git repository `https://github.com/rust-mikrokontroller-praktikum/smoltcp.git` [INFO] [stderr] Updating git repository `https://github.com/rust-mikrokontroller-praktikum/stm32f7-discovery.git` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cortex-m-semihosting v0.3.2 [INFO] [stderr] Downloaded font8x8 v0.2.4 [INFO] [stderr] Downloaded managed v0.7.1 [INFO] [stderr] Downloaded syn v0.15.30 [INFO] [stderr] Downloaded alloc-cortex-m v0.3.5 [INFO] [stderr] Downloaded volatile-register v0.1.2 [INFO] [stderr] Downloaded linked_list_allocator v0.6.4 [INFO] [stderr] Downloaded cortex-m v0.1.8 [INFO] [stderr] Downloaded spin v0.4.10 [INFO] [stderr] Downloaded stm32f7 v0.3.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d85f0aab8fe12759531fc2bae6a195e7b10570a98d07e9d3961051536345661c [INFO] running `Command { std: "docker" "start" "-a" "d85f0aab8fe12759531fc2bae6a195e7b10570a98d07e9d3961051536345661c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d85f0aab8fe12759531fc2bae6a195e7b10570a98d07e9d3961051536345661c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d85f0aab8fe12759531fc2bae6a195e7b10570a98d07e9d3961051536345661c", kill_on_drop: false }` [INFO] [stdout] d85f0aab8fe12759531fc2bae6a195e7b10570a98d07e9d3961051536345661c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d0ce826297377857c6461834b127b5833f1d386d53a2745f379635bba0cd4e52 [INFO] running `Command { std: "docker" "start" "-a" "d0ce826297377857c6461834b127b5833f1d386d53a2745f379635bba0cd4e52", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v0.4.27 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v0.15.30 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.13 (https://github.com/rust-lang-nursery/futures-rs.git#30cb841c) [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Compiling cortex-m v0.5.8 [INFO] [stderr] Compiling cortex-m-rt v0.6.8 (https://github.com/rust-embedded/cortex-m-rt.git#9859fa16) [INFO] [stderr] Compiling byteorder v1.3.1 [INFO] [stderr] Checking either v1.5.2 [INFO] [stderr] Checking aligned v0.2.0 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Compiling arrayvec v0.4.10 [INFO] [stderr] Compiling cortex-m-semihosting v0.3.2 [INFO] [stderr] Checking volatile-register v0.1.2 [INFO] [stderr] Compiling stm32f7 v0.3.2 [INFO] [stderr] Checking linked_list_allocator v0.6.4 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Checking managed v0.7.1 [INFO] [stderr] Compiling stm32f7-discovery v0.1.0 (https://github.com/rust-mikrokontroller-praktikum/stm32f7-discovery.git?branch=broadcast#0c72e82e) [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking nb v0.1.1 [INFO] [stderr] Checking font8x8 v0.2.4 [INFO] [stderr] Checking core v0.1.0 (https://github.com/rust-mikrokontroller-praktikum/stm32f7-discovery.git?branch=broadcast#0c72e82e) [INFO] [stderr] Checking spin v0.4.10 [INFO] [stderr] Checking bit_field v0.9.0 [INFO] [stderr] Checking core v0.1.0 (/opt/rustwide/workdir/core) [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.4/src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(const_fn)] [INFO] [stdout] | ^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: split into finer-grained feature gates [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved imports `alloc::alloc::Alloc`, `alloc::alloc::AllocErr` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.4/src/lib.rs:14:20 [INFO] [stdout] | [INFO] [stdout] 14 | use alloc::alloc::{Alloc, AllocErr, Layout}; [INFO] [stdout] | ^^^^^ ^^^^^^^^ no `AllocErr` in `alloc` [INFO] [stdout] | | [INFO] [stdout] | no `Alloc` in `alloc` [INFO] [stdout] | [INFO] [stdout] help: a similar name exists in the module [INFO] [stdout] | [INFO] [stdout] 14 | use alloc::alloc::{alloc, AllocErr, Layout}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] help: a similar name exists in the module [INFO] [stdout] | [INFO] [stdout] 14 | use alloc::alloc::{Alloc, AllocError, Layout}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved import `alloc::alloc::AllocErr` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.4/src/hole.rs:1:20 [INFO] [stdout] | [INFO] [stdout] 1 | use alloc::alloc::{AllocErr, Layout}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | no `AllocErr` in `alloc` [INFO] [stdout] | help: a similar name exists in the module: `AllocError` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `linked_list_allocator` due to 4 previous errors [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] Some errors have detailed explanations: E0432, E0557. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0432`. [INFO] [stdout] [INFO] [stdout] error[E0053]: method `poll` has an incompatible type for trait [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/futures-rs-4ca77cb4f4f05ac4/30cb841/futures-core/src/future/future_obj.rs:64:42 [INFO] [stdout] | [INFO] [stdout] 64 | fn poll(self: Pin<&mut Self>, waker: &Waker) -> Poll { [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(core::pin::Pin<&mut future_obj::LocalFutureObj<'a, T>>, &mut Context<'_>) -> core::task::Poll<_>` [INFO] [stdout] found fn pointer `fn(core::pin::Pin<&mut future_obj::LocalFutureObj<'a, T>>, &core::task::Waker) -> core::task::Poll<_>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0053]: method `poll` has an incompatible type for trait [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/futures-rs-4ca77cb4f4f05ac4/30cb841/futures-core/src/future/future_obj.rs:114:42 [INFO] [stdout] | [INFO] [stdout] 114 | fn poll(self: Pin<&mut Self>, waker: &Waker) -> Poll { [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(core::pin::Pin<&mut future_obj::FutureObj<'a, T>>, &mut Context<'_>) -> core::task::Poll<_>` [INFO] [stdout] found fn pointer `fn(core::pin::Pin<&mut future_obj::FutureObj<'a, T>>, &core::task::Waker) -> core::task::Poll<_>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/stm32f7-discovery-2b5c4f031d8f1e32/0c72e82/core/src/lib.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(optin_builtin_traits)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: renamed to `auto_traits` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/stm32f7-discovery-2b5c4f031d8f1e32/0c72e82/core/src/lib.rs:35:36 [INFO] [stdout] | [INFO] [stdout] 35 | impl> !Unpin for GenFuture {} [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #68318 for more information [INFO] [stdout] = help: add `#![feature(negative_impls)]` to the crate attributes to enable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.10/src/lib.rs:6:43 [INFO] [stdout] | [INFO] [stdout] 6 | #![cfg_attr(feature = "const_fn", feature(const_fn))] [INFO] [stdout] | ^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: split into finer-grained feature gates [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> core/src/lib.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(optin_builtin_traits)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: renamed to `auto_traits` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0053]: method `poll` has an incompatible type for trait [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/stm32f7-discovery-2b5c4f031d8f1e32/0c72e82/core/src/lib.rs:39:43 [INFO] [stdout] | [INFO] [stdout] 39 | fn poll(self: Pin<&mut Self>, lw: &Waker) -> Poll { [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 GenFuture>, &mut Context<'_>) -> Poll<_>` [INFO] [stdout] found fn pointer `fn(Pin<&mut GenFuture>, &Waker) -> Poll<_>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0061]: this function takes 1 argument but 0 arguments were supplied [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/stm32f7-discovery-2b5c4f031d8f1e32/0c72e82/core/src/lib.rs:42:45 [INFO] [stdout] | [INFO] [stdout] 42 | set_task_waker(lw, || match gen.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] 42 | set_task_waker(lw, || match gen.resume(()) { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now [INFO] [stdout] --> core/src/lib.rs:35:36 [INFO] [stdout] | [INFO] [stdout] 35 | impl> !Unpin for GenFuture {} [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #68318 for more information [INFO] [stdout] = help: add `#![feature(negative_impls)]` to the crate attributes to enable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/futures-rs-4ca77cb4f4f05ac4/30cb841/futures-core/src/future/mod.rs:89:19 [INFO] [stdout] | [INFO] [stdout] 89 | self.poll(waker) [INFO] [stdout] | ^^^^^ types differ in mutability [INFO] [stdout] | [INFO] [stdout] = note: expected mutable reference `&mut Context<'_>` [INFO] [stdout] found reference `&core::task::Waker` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0557`. [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/futures-rs-4ca77cb4f4f05ac4/30cb841/futures-core/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 `&core::task::Waker` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/futures-rs-4ca77cb4f4f05ac4/30cb841/futures-core/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 `&core::task::Waker` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/futures-rs-4ca77cb4f4f05ac4/30cb841/futures-core/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 `&core::task::Waker` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0053]: method `poll` has an incompatible type for trait [INFO] [stdout] --> core/src/lib.rs:39:43 [INFO] [stdout] | [INFO] [stdout] 39 | fn poll(self: Pin<&mut Self>, lw: &Waker) -> Poll { [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 GenFuture>, &mut Context<'_>) -> Poll<_>` [INFO] [stdout] found fn pointer `fn(Pin<&mut GenFuture>, &Waker) -> Poll<_>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/futures-rs-4ca77cb4f4f05ac4/30cb841/futures-core/src/future/future_obj.rs:204:26 [INFO] [stdout] | [INFO] [stdout] 204 | F::poll(pin, waker) [INFO] [stdout] | ^^^^^ types differ in mutability [INFO] [stdout] | [INFO] [stdout] = note: expected mutable reference `&mut Context<'_>` [INFO] [stdout] found reference `&core::task::Waker` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/futures-rs-4ca77cb4f4f05ac4/30cb841/futures-core/src/future/future_obj.rs:226:26 [INFO] [stdout] | [INFO] [stdout] 226 | F::poll(pin, waker) [INFO] [stdout] | ^^^^^ types differ in mutability [INFO] [stdout] | [INFO] [stdout] = note: expected mutable reference `&mut Context<'_>` [INFO] [stdout] found reference `&core::task::Waker` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0061]: this function takes 1 argument but 0 arguments were supplied [INFO] [stdout] --> core/src/lib.rs:42:45 [INFO] [stdout] | [INFO] [stdout] 42 | set_task_waker(lw, || match gen.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] 42 | set_task_waker(lw, || match gen.resume(()) { [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [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] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> /opt/rustwide/cargo-home/git/checkouts/stm32f7-discovery-2b5c4f031d8f1e32/0c72e82/core/src/lib.rs:94:40 [INFO] [stdout] | [INFO] [stdout] 94 | get_task_waker(|lw| F::poll(f, lw)) [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] [stdout] error: aborting due to 5 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0053, E0061, E0308, E0557, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0053`. [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> core/src/lib.rs:94:40 [INFO] [stdout] | [INFO] [stdout] 94 | get_task_waker(|lw| F::poll(f, lw)) [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] [stdout] error: aborting due to 5 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0053, E0061, E0308, E0557, E0658. [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" "d0ce826297377857c6461834b127b5833f1d386d53a2745f379635bba0cd4e52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d0ce826297377857c6461834b127b5833f1d386d53a2745f379635bba0cd4e52", kill_on_drop: false }` [INFO] [stdout] d0ce826297377857c6461834b127b5833f1d386d53a2745f379635bba0cd4e52