[INFO] cloning repository https://github.com/fx-kirin/mio_tcp_loop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fx-kirin/mio_tcp_loop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffx-kirin%2Fmio_tcp_loop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffx-kirin%2Fmio_tcp_loop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25ee03c22217221a5bf8a3e0bbd942db8b7222b8
[INFO] building fx-kirin/mio_tcp_loop against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffx-kirin%2Fmio_tcp_loop" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fx-kirin/mio_tcp_loop on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fx-kirin/mio_tcp_loop
[INFO] finished tweaking git repo https://github.com/fx-kirin/mio_tcp_loop
[INFO] tweaked toml for git repo https://github.com/fx-kirin/mio_tcp_loop written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages to latest compatible versions
[INFO] [stderr]       Adding mio v0.6.23 (available: v1.0.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded kaniexpect v0.1.3
[INFO] [stderr]   Downloaded gdb_breakpoint v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8532a0246426cfda5ab27f4cc9e934dbb30b94fd05f734e03e18ac37e6b469fb
[INFO] running `Command { std: "docker" "start" "-a" "8532a0246426cfda5ab27f4cc9e934dbb30b94fd05f734e03e18ac37e6b469fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8532a0246426cfda5ab27f4cc9e934dbb30b94fd05f734e03e18ac37e6b469fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8532a0246426cfda5ab27f4cc9e934dbb30b94fd05f734e03e18ac37e6b469fb", kill_on_drop: false }`
[INFO] [stdout] 8532a0246426cfda5ab27f4cc9e934dbb30b94fd05f734e03e18ac37e6b469fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 055d3fd45ccc8b7a9ce50af4dd4d1e8766c608863ca2e154cf5d2076d58ccab8
[INFO] running `Command { std: "docker" "start" "-a" "055d3fd45ccc8b7a9ce50af4dd4d1e8766c608863ca2e154cf5d2076d58ccab8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling kaniexpect v0.1.3
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling gdb_breakpoint v0.2.0
[INFO] [stderr]    Compiling mio_tcp_loop v0.1.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `anyhow::anyhow`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use anyhow::anyhow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `kaniexpect::expect`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use kaniexpect::expect;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]   --> src/lib.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use log::{debug, error, info, trace};
[INFO] [stdout]    |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/lib.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |             let result = Self::thread_loop(tcp_stream, task_rx, reader_tx, readable_set_readiness)?;
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.06s
[INFO] running `Command { std: "docker" "inspect" "055d3fd45ccc8b7a9ce50af4dd4d1e8766c608863ca2e154cf5d2076d58ccab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "055d3fd45ccc8b7a9ce50af4dd4d1e8766c608863ca2e154cf5d2076d58ccab8", kill_on_drop: false }`
[INFO] [stdout] 055d3fd45ccc8b7a9ce50af4dd4d1e8766c608863ca2e154cf5d2076d58ccab8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37bd74a7d5965ced7eafafa12d884d7d51b999e93e7f0497d2b2bd139df232f9
[INFO] running `Command { std: "docker" "start" "-a" "37bd74a7d5965ced7eafafa12d884d7d51b999e93e7f0497d2b2bd139df232f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling mio_tcp_loop v0.1.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `anyhow::anyhow`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use anyhow::anyhow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `kaniexpect::expect`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use kaniexpect::expect;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]   --> src/lib.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use log::{debug, error, info, trace};
[INFO] [stdout]    |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/lib.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |             let result = Self::thread_loop(tcp_stream, task_rx, reader_tx, readable_set_readiness)?;
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow::anyhow`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use anyhow::anyhow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `kaniexpect::expect`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use kaniexpect::expect;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]   --> src/lib.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use log::{debug, error, info, trace};
[INFO] [stdout]    |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/lib.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |             let result = Self::thread_loop(tcp_stream, task_rx, reader_tx, readable_set_readiness)?;
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "37bd74a7d5965ced7eafafa12d884d7d51b999e93e7f0497d2b2bd139df232f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37bd74a7d5965ced7eafafa12d884d7d51b999e93e7f0497d2b2bd139df232f9", kill_on_drop: false }`
[INFO] [stdout] 37bd74a7d5965ced7eafafa12d884d7d51b999e93e7f0497d2b2bd139df232f9