[INFO] fetching crate melnet 0.2.27...
[INFO] checking melnet-0.2.27 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate melnet 0.2.27 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate melnet 0.2.27
[INFO] finished tweaking crates.io crate melnet 0.2.27
[INFO] tweaked toml for crates.io crate melnet 0.2.27 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate melnet 0.2.27 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate melnet 0.2.27 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c271512d34b87d90869bcb1e624f1e585d53762968d83a206c699d4d4b27ee12
[INFO] running `Command { std: "docker" "start" "-a" "c271512d34b87d90869bcb1e624f1e585d53762968d83a206c699d4d4b27ee12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c271512d34b87d90869bcb1e624f1e585d53762968d83a206c699d4d4b27ee12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c271512d34b87d90869bcb1e624f1e585d53762968d83a206c699d4d4b27ee12", kill_on_drop: false }`
[INFO] [stdout] c271512d34b87d90869bcb1e624f1e585d53762968d83a206c699d4d4b27ee12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3943191e1267a38d3244f609d448d10f9792d87ff12c80656eb06aa8151c05d1
[INFO] running `Command { std: "docker" "start" "-a" "3943191e1267a38d3244f609d448d10f9792d87ff12c80656eb06aa8151c05d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking async-task v4.2.0
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking polling v2.2.0
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]     Checking futures-micro v0.3.1
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking lock_api v0.4.7
[INFO] [stderr]     Checking crossbeam-epoch v0.9.8
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking async-io v1.7.0
[INFO] [stderr]     Checking async-oneshot v0.4.2
[INFO] [stderr]     Checking blocking v1.2.0
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[INFO] [stderr]     Checking rtrb v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking spin v0.9.3
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[INFO] [stderr]     Checking crossbeam-deque v0.8.1
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[INFO] [stderr]     Checking async-net v1.6.1
[INFO] [stderr]     Checking async-process v1.4.0
[INFO] [stderr]     Checking smol-timeout v0.6.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking smol v1.2.5
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking backtrace v0.3.65
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling async-recursion v1.0.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling async-trait v0.1.56
[INFO] [stderr]     Checking futures-util v0.3.21
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.12
[INFO] [stderr]     Checking smolscale v0.3.24
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking stdcode v0.1.7
[INFO] [stderr]     Checking melnet v0.2.27 (/opt/rustwide/workdir)
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/bin/mngossip.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | async fn spam_neighbors(nstate: &NetState, req: GossipMsg) -> anyhow::Result<()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `for<'de> !: Deserialize<'de>` will fail
[INFO] [stdout]   --> src/bin/mngossip.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         melnet::request(neigh, "gossip", "gossip", req.clone()).await?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 52 |         melnet::request::<_, ()>(neigh, "gossip", "gossip", req.clone()).await?;
[INFO] [stdout]    |                        +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/bin/mngossip.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | async fn spam_neighbors(nstate: &NetState, req: GossipMsg) -> anyhow::Result<()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `for<'de> !: Deserialize<'de>` will fail
[INFO] [stdout]   --> src/bin/mngossip.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         melnet::request(neigh, "gossip", "gossip", req.clone()).await?;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 52 |         melnet::request::<_, ()>(neigh, "gossip", "gossip", req.clone()).await?;
[INFO] [stdout]    |                        +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `melnet` (bin "mngossip" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `melnet` (bin "mngossip") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3943191e1267a38d3244f609d448d10f9792d87ff12c80656eb06aa8151c05d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3943191e1267a38d3244f609d448d10f9792d87ff12c80656eb06aa8151c05d1", kill_on_drop: false }`
[INFO] [stdout] 3943191e1267a38d3244f609d448d10f9792d87ff12c80656eb06aa8151c05d1
