[INFO] cloning repository https://github.com/Hiptic/c-ares-experiment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hiptic/c-ares-experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHiptic%2Fc-ares-experiment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHiptic%2Fc-ares-experiment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 903b8a5c5e75395942a8dd1db9ea6267aec7a890
[INFO] checking Hiptic/c-ares-experiment/903b8a5c5e75395942a8dd1db9ea6267aec7a890 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHiptic%2Fc-ares-experiment" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hiptic/c-ares-experiment on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hiptic/c-ares-experiment
[INFO] finished tweaking git repo https://github.com/Hiptic/c-ares-experiment
[INFO] tweaked toml for git repo https://github.com/Hiptic/c-ares-experiment written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Hiptic/c-ares-experiment 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b080c564d898f36d3dc2a4cb6885ed565151810bb17236b431c23a9277c0b267
[INFO] running `Command { std: "docker" "start" "-a" "b080c564d898f36d3dc2a4cb6885ed565151810bb17236b431c23a9277c0b267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b080c564d898f36d3dc2a4cb6885ed565151810bb17236b431c23a9277c0b267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b080c564d898f36d3dc2a4cb6885ed565151810bb17236b431c23a9277c0b267", kill_on_drop: false }`
[INFO] [stdout] b080c564d898f36d3dc2a4cb6885ed565151810bb17236b431c23a9277c0b267
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 527ed0dce678315c117bdf2956525096b095a62c76625ffb0d5f625190ee9bf1
[INFO] running `Command { std: "docker" "start" "-a" "527ed0dce678315c117bdf2956525096b095a62c76625ffb0d5f625190ee9bf1", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking libc v0.2.21
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling gcc v0.3.45
[INFO] [stderr]     Checking log v0.3.7
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking either v1.1.0
[INFO] [stderr]     Checking futures v0.1.11
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking itertools v0.5.9
[INFO] [stderr]     Checking iovec v0.1.0
[INFO] [stderr]     Checking c-types v1.1.1
[INFO] [stderr]     Checking net2 v0.2.27
[INFO] [stderr]     Checking bytes v0.4.1
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr]     Checking mio v0.6.6
[INFO] [stderr]    Compiling c-ares-sys v1.0.2
[INFO] [stderr]     Checking tokio-io v0.1.1
[INFO] [stderr]     Checking c-ares v1.1.2
[INFO] [stderr]     Checking tokio-core v0.1.6
[INFO] [stderr]     Checking c-ares-resolver v0.4.2
[INFO] [stderr]     Checking c-ares-experiment v0.1.0 (/opt/rustwide/workdir)
[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]   --> examples/example.rs:13:35
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (tx, rx) = mpsc::channel();
[INFO] [stdout]    |          -- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     let dns = Dns::new(move |res| tx.send(res).unwrap());
[INFO] [stdout]    |                              ---  ^^^^^^^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `c-ares-experiment` (example "example") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "527ed0dce678315c117bdf2956525096b095a62c76625ffb0d5f625190ee9bf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "527ed0dce678315c117bdf2956525096b095a62c76625ffb0d5f625190ee9bf1", kill_on_drop: false }`
[INFO] [stdout] 527ed0dce678315c117bdf2956525096b095a62c76625ffb0d5f625190ee9bf1