[INFO] cloning repository https://github.com/EwanValentine/rust-paxos [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EwanValentine/rust-paxos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEwanValentine%2Frust-paxos", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEwanValentine%2Frust-paxos'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 331d29815f2185dbbd6fbdf372b89bc6427bd5ef [INFO] testing EwanValentine/rust-paxos against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEwanValentine%2Frust-paxos" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/EwanValentine/rust-paxos on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/EwanValentine/rust-paxos [INFO] finished tweaking git repo https://github.com/EwanValentine/rust-paxos [INFO] tweaked toml for git repo https://github.com/EwanValentine/rust-paxos written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/EwanValentine/rust-paxos already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f2bf3632f5df7ca43fe7592904727494f004adb8ef8fcb488ae3e764452f7e70 [INFO] running `Command { std: "docker" "start" "-a" "f2bf3632f5df7ca43fe7592904727494f004adb8ef8fcb488ae3e764452f7e70", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f2bf3632f5df7ca43fe7592904727494f004adb8ef8fcb488ae3e764452f7e70", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f2bf3632f5df7ca43fe7592904727494f004adb8ef8fcb488ae3e764452f7e70", kill_on_drop: false }` [INFO] [stdout] f2bf3632f5df7ca43fe7592904727494f004adb8ef8fcb488ae3e764452f7e70 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5e49afe04750afe3d97b1d5bde44575de79dc2a9faf073fc70e8304fc60a3dd8 [INFO] running `Command { std: "docker" "start" "-a" "5e49afe04750afe3d97b1d5bde44575de79dc2a9faf073fc70e8304fc60a3dd8", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.33 [INFO] [stderr] Compiling pin-project-internal v0.4.22 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling once_cell v1.4.0 [INFO] [stderr] Compiling futures-core v0.3.5 [INFO] [stderr] Compiling futures-sink v0.3.5 [INFO] [stderr] Compiling futures-io v0.3.5 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling cache-padded v1.1.0 [INFO] [stderr] Compiling parking v1.0.3 [INFO] [stderr] Compiling waker-fn v1.0.0 [INFO] [stderr] Compiling async-task v3.0.0 [INFO] [stderr] Compiling fastrand v1.3.2 [INFO] [stderr] Compiling pin-project-lite v0.1.7 [INFO] [stderr] Compiling socket2 v0.3.12 [INFO] [stderr] Compiling concurrent-queue v1.1.1 [INFO] [stderr] Compiling futures-task v0.3.5 [INFO] [stderr] Compiling futures-channel v0.3.5 [INFO] [stderr] Compiling kv-log-macro v1.0.6 [INFO] [stderr] Compiling async-attributes v1.1.1 [INFO] [stderr] Compiling pin-project v0.4.22 [INFO] [stderr] Compiling futures-util v0.3.5 [INFO] [stderr] Compiling blocking v0.4.6 [INFO] [stderr] Compiling smol v0.1.18 [INFO] [stderr] Compiling async-std v1.6.2 [INFO] [stderr] Compiling paxos v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Duration` [INFO] [stdout] --> src/transport/tcp.rs:4:17 [INFO] [stdout] | [INFO] [stdout] 4 | use std::time::{Duration, Instant}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `async_std::net::ToSocketAddrs` [INFO] [stdout] --> src/transport/transport.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use async_std::net::ToSocketAddrs; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/transport/transport.rs:8:50 [INFO] [stdout] | [INFO] [stdout] 8 | fn connect(addr: String) -> std::io::Result<(T)>; [INFO] [stdout] | ^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/transport/transport.rs:9:62 [INFO] [stdout] | [INFO] [stdout] 9 | fn connect_with_stream(stream: S) -> std::io::Result<(T)>; [INFO] [stdout] | ^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/transport/transport.rs:17:16 [INFO] [stdout] | [INFO] [stdout] 17 | adapter: &'a Adapter [INFO] [stdout] | ^^^^^^^ help: use `dyn`: `dyn Adapter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/transport/transport.rs:25:60 [INFO] [stdout] | [INFO] [stdout] 25 | pub fn connect(self, addr: String) -> std::io::Result<(T)> { [INFO] [stdout] | ^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/transport/transport.rs:30:72 [INFO] [stdout] | [INFO] [stdout] 30 | pub fn connect_with_stream(self, stream: S) -> std::io::Result<(T)> { [INFO] [stdout] | ^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0038]: the trait `Adapter` cannot be made into an object [INFO] [stdout] --> src/transport/transport.rs:17:16 [INFO] [stdout] | [INFO] [stdout] 17 | adapter: &'a Adapter [INFO] [stdout] | ^^^^^^^ `Adapter` cannot be made into an object [INFO] [stdout] | [INFO] [stdout] note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit [INFO] [stdout] --> src/transport/transport.rs:8:6 [INFO] [stdout] | [INFO] [stdout] 7 | pub trait Adapter { [INFO] [stdout] | ------- this trait cannot be made into an object... [INFO] [stdout] 8 | fn connect(addr: String) -> std::io::Result<(T)>; [INFO] [stdout] | ^^^^^^^ ...because associated function `connect` has no `self` parameter [INFO] [stdout] 9 | fn connect_with_stream(stream: S) -> std::io::Result<(T)>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ ...because associated function `connect_with_stream` has no `self` parameter [INFO] [stdout] help: consider turning `connect` into a method by giving it a `&self` argument [INFO] [stdout] | [INFO] [stdout] 8 | fn connect(&self, addr: String) -> std::io::Result<(T)>; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] help: alternatively, consider constraining `connect` so it does not apply to trait objects [INFO] [stdout] | [INFO] [stdout] 8 | fn connect(addr: String) -> std::io::Result<(T)> where Self: Sized; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] help: consider turning `connect_with_stream` into a method by giving it a `&self` argument [INFO] [stdout] | [INFO] [stdout] 9 | fn connect_with_stream(&self, stream: S) -> std::io::Result<(T)>; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] help: alternatively, consider constraining `connect_with_stream` so it does not apply to trait objects [INFO] [stdout] | [INFO] [stdout] 9 | fn connect_with_stream(stream: S) -> std::io::Result<(T)> where Self: Sized; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0038`. [INFO] [stdout] [INFO] [stderr] error: could not compile `paxos` due to 2 previous errors; 8 warnings emitted [INFO] running `Command { std: "docker" "inspect" "5e49afe04750afe3d97b1d5bde44575de79dc2a9faf073fc70e8304fc60a3dd8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e49afe04750afe3d97b1d5bde44575de79dc2a9faf073fc70e8304fc60a3dd8", kill_on_drop: false }` [INFO] [stdout] 5e49afe04750afe3d97b1d5bde44575de79dc2a9faf073fc70e8304fc60a3dd8