[INFO] cloning repository https://github.com/sandreim/epolly
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sandreim/epolly" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsandreim%2Fepolly", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsandreim%2Fepolly'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e20a54f4eeddc64e7897c46fd28bc56f9dea078e
[INFO] checking sandreim/epolly against try#81275a1445c7502a974118e0c69b795ab60be991 for pr-80243
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsandreim%2Fepolly" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sandreim/epolly on toolchain 81275a1445c7502a974118e0c69b795ab60be991
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sandreim/epolly
[INFO] removed workspace from git repo https://github.com/sandreim/epolly
[INFO] finished tweaking git repo https://github.com/sandreim/epolly
[INFO] tweaked toml for git repo https://github.com/sandreim/epolly written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/sandreim/epolly already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 408b814365152389bb681a9495a5622e44697a61298f812cb7e9e05d64e0ba84
[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" "408b814365152389bb681a9495a5622e44697a61298f812cb7e9e05d64e0ba84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "408b814365152389bb681a9495a5622e44697a61298f812cb7e9e05d64e0ba84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408b814365152389bb681a9495a5622e44697a61298f812cb7e9e05d64e0ba84", kill_on_drop: false }`
[INFO] [stdout] 408b814365152389bb681a9495a5622e44697a61298f812cb7e9e05d64e0ba84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 163901c7edef1b375c96251fcc4e98ef8ea60e0346b67660b6764df68cf31af4
[INFO] running `Command { std: "docker" "start" "-a" "163901c7edef1b375c96251fcc4e98ef8ea60e0346b67660b6764df68cf31af4", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking epoll v4.1.0
[INFO] [stderr]     Checking epolly v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `RawFd`
[INFO] [stdout]   --> src/main.rs:18:34
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::os::unix::io::{AsRawFd, RawFd};
[INFO] [stdout]    |                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RawFd`
[INFO] [stdout]   --> src/main.rs:18:34
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::os::unix::io::{AsRawFd, RawFd};
[INFO] [stdout]    |                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wrapped_em2`
[INFO] [stdout]    --> src/main.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |     let wrapped_em2 = em.register(em2);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wrapped_em2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wrapped_em2`
[INFO] [stdout]    --> src/main.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |     let wrapped_em2 = em.register(em2);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_wrapped_em2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update`
[INFO] [stdout]    --> src/event_manager.rs:194:12
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn update(
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]    --> src/event_manager.rs:351:12
[INFO] [stdout]     |
[INFO] [stdout] 351 |     pub fn run(&mut self) -> Result<usize> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Update`
[INFO] [stdout]   --> src/pollable.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Update(EventRegistrationData),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `writeable`
[INFO] [stdout]    --> src/pollable.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn writeable<'a>(&'a mut self) -> &'a mut PollableOpBuilder {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update`
[INFO] [stdout]    --> src/pollable.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn update(&self) -> PollableOp {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update`
[INFO] [stdout]    --> src/event_manager.rs:194:12
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn update(
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]    --> src/event_manager.rs:351:12
[INFO] [stdout]     |
[INFO] [stdout] 351 |     pub fn run(&mut self) -> Result<usize> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Update`
[INFO] [stdout]   --> src/pollable.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Update(EventRegistrationData),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `writeable`
[INFO] [stdout]    --> src/pollable.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn writeable<'a>(&'a mut self) -> &'a mut PollableOpBuilder {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update`
[INFO] [stdout]    --> src/pollable.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn update(&self) -> PollableOp {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         tcp_server.set_nonblocking(true);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:139:25
[INFO] [stdout]     |
[INFO] [stdout] 139 |                         client.write(message.as_bytes());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         tcp_server.set_nonblocking(true);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:139:25
[INFO] [stdout]     |
[INFO] [stdout] 139 |                         client.write(message.as_bytes());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.66s
[INFO] running `Command { std: "docker" "inspect" "163901c7edef1b375c96251fcc4e98ef8ea60e0346b67660b6764df68cf31af4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "163901c7edef1b375c96251fcc4e98ef8ea60e0346b67660b6764df68cf31af4", kill_on_drop: false }`
[INFO] [stdout] 163901c7edef1b375c96251fcc4e98ef8ea60e0346b67660b6764df68cf31af4