[INFO] fetching crate async-coap 0.1.0... [INFO] checking async-coap-0.1.0 against try#8ea250bdb76176ecb0225baa34aa634b024ae0e2 for pr-101692 [INFO] extracting crate async-coap 0.1.0 into /workspace/builds/worker-2/source [INFO] validating manifest of crates.io crate async-coap 0.1.0 on toolchain 8ea250bdb76176ecb0225baa34aa634b024ae0e2 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate async-coap 0.1.0 [INFO] finished tweaking crates.io crate async-coap 0.1.0 [INFO] tweaked toml for crates.io crate async-coap 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a7d258bec40a5415b2f14b87e4ab65910d24d4da93054f44fec3820600df3c9d [INFO] running `Command { std: "docker" "start" "-a" "a7d258bec40a5415b2f14b87e4ab65910d24d4da93054f44fec3820600df3c9d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a7d258bec40a5415b2f14b87e4ab65910d24d4da93054f44fec3820600df3c9d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a7d258bec40a5415b2f14b87e4ab65910d24d4da93054f44fec3820600df3c9d", kill_on_drop: false }` [INFO] [stdout] a7d258bec40a5415b2f14b87e4ab65910d24d4da93054f44fec3820600df3c9d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "RUSTDOCFLAGS=--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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 00c3f9cdaf98d147c97c99fb23f55d92d52b6f608ed65e1362ee1fb0a4fd8241 [INFO] running `Command { std: "docker" "start" "-a" "00c3f9cdaf98d147c97c99fb23f55d92d52b6f608ed65e1362ee1fb0a4fd8241", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling libc v0.2.132 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling proc-macro-nested v0.1.7 [INFO] [stderr] Checking ppv-lite86 v0.2.16 [INFO] [stderr] Checking futures-io-preview v0.3.0-alpha.18 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Compiling regex-syntax v0.6.27 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Compiling autocfg v0.1.8 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.18 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.18 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [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] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling num-integer v0.1.45 [INFO] [stderr] Compiling slab v0.4.7 [INFO] [stderr] Compiling num-bigint v0.2.6 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling num-complex v0.2.4 [INFO] [stderr] Compiling num-rational v0.2.4 [INFO] [stderr] Compiling num-iter v0.1.43 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking aho-corasick v0.7.19 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking num_cpus v1.13.1 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking regex v1.6.0 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking num v0.2.1 [INFO] [stderr] Compiling futures-select-macro-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling futures-join-macro-preview v0.3.0-alpha.18 [INFO] [stderr] Compiling async-coap-uri-macros v0.1.0 [INFO] [stderr] Checking futures-util-preview v0.3.0-alpha.18 [INFO] [stderr] Checking async-coap-uri v0.1.0 [INFO] [stderr] Checking futures-executor-preview v0.3.0-alpha.18 [INFO] [stderr] Checking futures-preview v0.3.0-alpha.18 [INFO] [stderr] Checking futures-timer v0.3.0 [INFO] [stderr] Checking async-coap v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level [INFO] [stdout] --> src/arc_guard.rs:115:54 [INFO] [stdout] | [INFO] [stdout] 115 | #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_attributes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level [INFO] [stdout] --> src/arc_guard.rs:115:54 [INFO] [stdout] | [INFO] [stdout] 115 | #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_attributes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:317:12 [INFO] [stdout] | [INFO] [stdout] 317 | #![feature(async_await)] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:317:12 [INFO] [stdout] | [INFO] [stdout] 317 | #![feature(async_await)] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0391]: cycle detected when type-checking `datagram::local_endpoint::::receive` [INFO] [stdout] --> src/datagram/local_endpoint.rs:196:5 [INFO] [stdout] | [INFO] [stdout] 196 | / fn receive<'a, F>(&'a self, mut handler: F) -> BoxFuture<'a, Result<(), Error>> [INFO] [stdout] 197 | | where [INFO] [stdout] 198 | | F: FnMut(&Self::RespondableInboundContext) -> Result<(), Error> + 'a + Send, [INFO] [stdout] | |____________________________________________________________________________________^ [INFO] [stdout] | [INFO] [stdout] note: ...which requires generator glue MIR for `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires elaborating drops for `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires borrow-checking `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires processing `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires processing MIR for `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires unsafety-checking `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires building MIR for `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires type-checking `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] = note: ...which again requires type-checking `datagram::local_endpoint::::receive`, completing the cycle [INFO] [stdout] = note: cycle used when type-checking all item bodies [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0391`. [INFO] [stdout] [INFO] [stderr] error: could not compile `async-coap` due to 2 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0391]: cycle detected when type-checking `datagram::local_endpoint::::receive` [INFO] [stdout] --> src/datagram/local_endpoint.rs:196:5 [INFO] [stdout] | [INFO] [stdout] 196 | / fn receive<'a, F>(&'a self, mut handler: F) -> BoxFuture<'a, Result<(), Error>> [INFO] [stdout] 197 | | where [INFO] [stdout] 198 | | F: FnMut(&Self::RespondableInboundContext) -> Result<(), Error> + 'a + Send, [INFO] [stdout] | |____________________________________________________________________________________^ [INFO] [stdout] | [INFO] [stdout] note: ...which requires generator glue MIR for `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires elaborating drops for `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires borrow-checking `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires processing `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires processing MIR for `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires unsafety-checking `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires building MIR for `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] note: ...which requires type-checking `datagram::local_endpoint::::receive::{closure#0}`... [INFO] [stdout] --> src/datagram/local_endpoint.rs:200:20 [INFO] [stdout] | [INFO] [stdout] 200 | async move { [INFO] [stdout] | ____________________^ [INFO] [stdout] 201 | | let mut buffer = [0u8; StandardCoapConstants::MAX_OUTBOUND_PACKET_LENGTH]; [INFO] [stdout] 202 | | let (len, source, dest) = match self.socket().next_recv_from(&mut buffer).await { [INFO] [stdout] 203 | | Ok(x) => x, [INFO] [stdout] ... | [INFO] [stdout] 297 | | ret [INFO] [stdout] 298 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] = note: ...which again requires type-checking `datagram::local_endpoint::::receive`, completing the cycle [INFO] [stdout] = note: cycle used when type-checking all item bodies [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0391`. [INFO] [stdout] [INFO] [stderr] error: could not compile `async-coap` due to 2 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "00c3f9cdaf98d147c97c99fb23f55d92d52b6f608ed65e1362ee1fb0a4fd8241", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "00c3f9cdaf98d147c97c99fb23f55d92d52b6f608ed65e1362ee1fb0a4fd8241", kill_on_drop: false }` [INFO] [stdout] 00c3f9cdaf98d147c97c99fb23f55d92d52b6f608ed65e1362ee1fb0a4fd8241