[INFO] cloning repository https://github.com/dunnock/a-chat [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dunnock/a-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdunnock%2Fa-chat", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdunnock%2Fa-chat'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] bdf41e55294b2e56273f849d3772f6556f0c724d [INFO] checking dunnock/a-chat against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdunnock%2Fa-chat" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dunnock/a-chat on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/dunnock/a-chat [INFO] finished tweaking git repo https://github.com/dunnock/a-chat [INFO] tweaked toml for git repo https://github.com/dunnock/a-chat written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/dunnock/a-chat 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded futures-timer v1.0.3 [INFO] [stderr] Downloaded async-macros v1.0.0 [INFO] [stderr] Downloaded pin-project-lite v0.1.0 [INFO] [stderr] Downloaded async-std v0.99.12 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 83a3be5c9c96563fca5c8c3ec7c187834bee8904efbf254a9c45229a54b09ba7 [INFO] running `Command { std: "docker" "start" "-a" "83a3be5c9c96563fca5c8c3ec7c187834bee8904efbf254a9c45229a54b09ba7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "83a3be5c9c96563fca5c8c3ec7c187834bee8904efbf254a9c45229a54b09ba7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "83a3be5c9c96563fca5c8c3ec7c187834bee8904efbf254a9c45229a54b09ba7", kill_on_drop: false }` [INFO] [stdout] 83a3be5c9c96563fca5c8c3ec7c187834bee8904efbf254a9c45229a54b09ba7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cfaf76616b66475883e118e40cc18f3c72a8ffcac5b13af09cc760af0d206807 [INFO] running `Command { std: "docker" "start" "-a" "cfaf76616b66475883e118e40cc18f3c72a8ffcac5b13af09cc760af0d206807", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Checking futures-core v0.3.1 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Compiling crossbeam-epoch v0.8.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking futures-io v0.3.1 [INFO] [stderr] Checking futures-sink v0.3.1 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking futures-task v0.3.1 [INFO] [stderr] Checking futures-channel v0.3.1 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Compiling memoffset v0.5.3 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.19 [INFO] [stderr] Checking kv-log-macro v1.0.4 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking async-macros v1.0.0 [INFO] [stderr] Checking futures-timer v1.0.3 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking async-task v1.0.0 [INFO] [stderr] Checking num_cpus v1.11.0 [INFO] [stderr] Checking pin-project-lite v0.1.0 [INFO] [stderr] Checking once_cell v1.2.0 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking crossbeam-deque v0.7.2 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking async-std v0.99.12 [INFO] [stderr] Compiling proc-macro-hack v0.5.11 [INFO] [stderr] Compiling futures-macro v0.3.1 [INFO] [stderr] Checking futures-util v0.3.1 [INFO] [stderr] Checking futures-executor v0.3.1 [INFO] [stderr] Checking futures v0.3.1 [INFO] [stderr] Checking async-std-tutorial v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/main.rs:2:10 [INFO] [stdout] | [INFO] [stdout] 2 | io::{self, BufReader}, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/main.rs:2:10 [INFO] [stdout] | [INFO] [stdout] 2 | io::{self, BufReader}, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.19s [INFO] running `Command { std: "docker" "inspect" "cfaf76616b66475883e118e40cc18f3c72a8ffcac5b13af09cc760af0d206807", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cfaf76616b66475883e118e40cc18f3c72a8ffcac5b13af09cc760af0d206807", kill_on_drop: false }` [INFO] [stdout] cfaf76616b66475883e118e40cc18f3c72a8ffcac5b13af09cc760af0d206807 [INFO] checking dunnock/a-chat against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdunnock%2Fa-chat" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dunnock/a-chat on toolchain f9935d29d867449445ee008640ccca1bf1ae0889 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/dunnock/a-chat [INFO] finished tweaking git repo https://github.com/dunnock/a-chat [INFO] tweaked toml for git repo https://github.com/dunnock/a-chat written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/dunnock/a-chat 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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4852d50e2cae6a68e4388671d7f6ff6a0b20200f216a284d29d64bf101e9086a [INFO] running `Command { std: "docker" "start" "-a" "4852d50e2cae6a68e4388671d7f6ff6a0b20200f216a284d29d64bf101e9086a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4852d50e2cae6a68e4388671d7f6ff6a0b20200f216a284d29d64bf101e9086a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4852d50e2cae6a68e4388671d7f6ff6a0b20200f216a284d29d64bf101e9086a", kill_on_drop: false }` [INFO] [stdout] 4852d50e2cae6a68e4388671d7f6ff6a0b20200f216a284d29d64bf101e9086a [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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 32952d1dff150c1179507dbf31f63b4f2a31c65dffe66227172c4a847f449379 [INFO] running `Command { std: "docker" "start" "-a" "32952d1dff150c1179507dbf31f63b4f2a31c65dffe66227172c4a847f449379", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Checking futures-core v0.3.1 [INFO] [stderr] Compiling crossbeam-epoch v0.8.0 [INFO] [stderr] Checking futures-io v0.3.1 [INFO] [stderr] Compiling memoffset v0.5.3 [INFO] [stderr] Checking futures-sink v0.3.1 [INFO] [stderr] Checking futures-channel v0.3.1 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.19 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking futures-task v0.3.1 [INFO] [stderr] Checking kv-log-macro v1.0.4 [INFO] [stderr] Checking futures-timer v1.0.3 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking num_cpus v1.11.0 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking async-task v1.0.0 [INFO] [stderr] Checking async-macros v1.0.0 [INFO] [stderr] Checking once_cell v1.2.0 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking pin-project-lite v0.1.0 [INFO] [stderr] Checking crossbeam-deque v0.7.2 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking async-std v0.99.12 [INFO] [stderr] Compiling proc-macro-hack v0.5.11 [INFO] [stderr] Compiling futures-macro v0.3.1 [INFO] [stderr] Checking futures-util v0.3.1 [INFO] [stderr] Checking futures-executor v0.3.1 [INFO] [stderr] Checking futures v0.3.1 [INFO] [stderr] Checking async-std-tutorial v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/main.rs:2:10 [INFO] [stdout] | [INFO] [stdout] 2 | io::{self, BufReader}, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/main.rs:2:10 [INFO] [stdout] | [INFO] [stdout] 2 | io::{self, BufReader}, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/main.rs:27:17 [INFO] [stdout] | [INFO] [stdout] 23 | fn spawn_and_log_error(fut: F) -> task::JoinHandle<()> [INFO] [stdout] | ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 27 | task::spawn(async move { [INFO] [stdout] | _________________^ [INFO] [stdout] 28 | | if let Err(e) = fut.await { [INFO] [stdout] 29 | | eprintln!("{}", e) [INFO] [stdout] 30 | | } [INFO] [stdout] 31 | | }) [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/main.rs:27:17 [INFO] [stdout] | [INFO] [stdout] 23 | fn spawn_and_log_error(fut: F) -> task::JoinHandle<()> [INFO] [stdout] | ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 27 | task::spawn(async move { [INFO] [stdout] | _________________^ [INFO] [stdout] 28 | | if let Err(e) = fut.await { [INFO] [stdout] 29 | | eprintln!("{}", e) [INFO] [stdout] 30 | | } [INFO] [stdout] 31 | | }) [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `async-std-tutorial` (bin "async-std-tutorial" test) due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `async-std-tutorial` (bin "async-std-tutorial") due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "32952d1dff150c1179507dbf31f63b4f2a31c65dffe66227172c4a847f449379", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "32952d1dff150c1179507dbf31f63b4f2a31c65dffe66227172c4a847f449379", kill_on_drop: false }` [INFO] [stdout] 32952d1dff150c1179507dbf31f63b4f2a31c65dffe66227172c4a847f449379