[INFO] cloning repository https://github.com/linyihai/lyh-reactor-executor-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/linyihai/lyh-reactor-executor-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinyihai%2Flyh-reactor-executor-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinyihai%2Flyh-reactor-executor-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 50341f98d8d9af7603cbb6e1dd72efad6d843261
[INFO] checking linyihai/lyh-reactor-executor-example against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flinyihai%2Flyh-reactor-executor-example" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/linyihai/lyh-reactor-executor-example on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/linyihai/lyh-reactor-executor-example
[INFO] finished tweaking git repo https://github.com/linyihai/lyh-reactor-executor-example
[INFO] tweaked toml for git repo https://github.com/linyihai/lyh-reactor-executor-example written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/linyihai/lyh-reactor-executor-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34b0ae285cc2c392e7d93746fb776c3e39a230381ca7f2b808cd8d22074f0ba6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "34b0ae285cc2c392e7d93746fb776c3e39a230381ca7f2b808cd8d22074f0ba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34b0ae285cc2c392e7d93746fb776c3e39a230381ca7f2b808cd8d22074f0ba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34b0ae285cc2c392e7d93746fb776c3e39a230381ca7f2b808cd8d22074f0ba6", kill_on_drop: false }`
[INFO] [stdout] 34b0ae285cc2c392e7d93746fb776c3e39a230381ca7f2b808cd8d22074f0ba6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4bc8af06abf69e97cc36e97113cff0a3e34b2c33989dc4c71a51078e1d137d87
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4bc8af06abf69e97cc36e97113cff0a3e34b2c33989dc4c71a51078e1d137d87", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking lyh-reactor-executor-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/poll.rs:11:49
[INFO] [stdout]     |
[INFO] [stdout] 11  |       ($fn: ident ( $($arg: expr),* $(,)* ) ) => {{
[INFO] [stdout]     |  _________________________________________________^
[INFO] [stdout] 12  | |         let res = unsafe { libc::$fn($($arg, )*) };
[INFO] [stdout] 13  | |         if res == -1 {
[INFO] [stdout] 14  | |             Err(std::io::Error::last_os_error())
[INFO] [stdout] ...   |
[INFO] [stdout] 17  | |         }
[INFO] [stdout] 18  | |     }};
[INFO] [stdout]     | |_____^
[INFO] [stdout] ...
[INFO] [stdout] 140 |           syscall!(close(fd));
[INFO] [stdout]     |           ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `syscall` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/poll.rs:11:49
[INFO] [stdout]     |
[INFO] [stdout] 11  |       ($fn: ident ( $($arg: expr),* $(,)* ) ) => {{
[INFO] [stdout]     |  _________________________________________________^
[INFO] [stdout] 12  | |         let res = unsafe { libc::$fn($($arg, )*) };
[INFO] [stdout] 13  | |         if res == -1 {
[INFO] [stdout] 14  | |             Err(std::io::Error::last_os_error())
[INFO] [stdout] ...   |
[INFO] [stdout] 17  | |         }
[INFO] [stdout] 18  | |     }};
[INFO] [stdout]     | |_____^
[INFO] [stdout] ...
[INFO] [stdout] 140 |           syscall!(close(fd));
[INFO] [stdout]     |           ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `syscall` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.90s
[INFO] running `Command { std: "docker" "inspect" "4bc8af06abf69e97cc36e97113cff0a3e34b2c33989dc4c71a51078e1d137d87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bc8af06abf69e97cc36e97113cff0a3e34b2c33989dc4c71a51078e1d137d87", kill_on_drop: false }`
[INFO] [stdout] 4bc8af06abf69e97cc36e97113cff0a3e34b2c33989dc4c71a51078e1d137d87