[INFO] cloning repository https://github.com/emreyalvac/epoll-tcp-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emreyalvac/epoll-tcp-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femreyalvac%2Fepoll-tcp-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femreyalvac%2Fepoll-tcp-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71b2cabe448d4242d07531f78eedf806e02d5cc5
[INFO] checking emreyalvac/epoll-tcp-server against try#7d2afcda7a9c043d5175cbca3ab08f0acf02b13a for pr-140824
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femreyalvac%2Fepoll-tcp-server" "/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/emreyalvac/epoll-tcp-server on toolchain 7d2afcda7a9c043d5175cbca3ab08f0acf02b13a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7d2afcda7a9c043d5175cbca3ab08f0acf02b13a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emreyalvac/epoll-tcp-server
[INFO] finished tweaking git repo https://github.com/emreyalvac/epoll-tcp-server
[INFO] tweaked toml for git repo https://github.com/emreyalvac/epoll-tcp-server written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/emreyalvac/epoll-tcp-server 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" "+7d2afcda7a9c043d5175cbca3ab08f0acf02b13a" "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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+7d2afcda7a9c043d5175cbca3ab08f0acf02b13a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ac17c53b5ce84c64565a1b4835499f9ebb6e4b87182a231fab45f85814bdf81
[INFO] running `Command { std: "docker" "start" "-a" "3ac17c53b5ce84c64565a1b4835499f9ebb6e4b87182a231fab45f85814bdf81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ac17c53b5ce84c64565a1b4835499f9ebb6e4b87182a231fab45f85814bdf81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ac17c53b5ce84c64565a1b4835499f9ebb6e4b87182a231fab45f85814bdf81", kill_on_drop: false }`
[INFO] [stdout] 3ac17c53b5ce84c64565a1b4835499f9ebb6e4b87182a231fab45f85814bdf81
[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" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+7d2afcda7a9c043d5175cbca3ab08f0acf02b13a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d29ea83b3cf28d8f55b938b17753325b138a8b7f02cb8480828f2cd9d1116175
[INFO] running `Command { std: "docker" "start" "-a" "d29ea83b3cf28d8f55b938b17753325b138a8b7f02cb8480828f2cd9d1116175", kill_on_drop: false }`
[INFO] [stderr]     Checking epool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ffi::c_void`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ffi::c_void;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mem`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{io, mem};
[INFO] [stdout]   |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::BufReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RawFd`
[INFO] [stdout]  --> src/main.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::os::unix::io::{AsRawFd, RawFd};
[INFO] [stdout]   |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EPOLLONESHOT`, `F_GETFD`, `F_SETFD`, `READ_FLAGS`, `WRITE_FLAGS`, `close`, and `read`
[INFO] [stdout]   --> src/main.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 | ...::{close, epoll_create1, epoll_ctl, EPOLL_CTL_ADD, EPOLL_CTL_DEL, EPOLL_CTL_MOD, epoll_wait, EPOLLET, EPOLLHUP, EPOLLIN, EPOLLONESHOT, EPOLLOUT, EPOLLRDHUP, Event, F_GETFD, F_SETFD, F_SETFL, fcntl, O_NONBLOCK, READ_FLAGS, WRITE_FLAGS, read};
[INFO] [stdout]    |       ^^^^^                                                                                                                 ^^^^^^^^^^^^                               ^^^^^^^  ^^^^^^^                              ^^^^^^^^^^  ^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EPOLL_CTL_ADD`, `Event`, `READ_FLAGS`, and `epoll_ctl`
[INFO] [stdout]  --> src/epoll/epoll.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::epoll::epoll::ffi::{epoll_ctl, EPOLL_CTL_ADD, Event, READ_FLAGS};
[INFO] [stdout]   |                                ^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 53  | /     loop {
[INFO] [stdout] 54  | |         events.clear();
[INFO] [stdout] 55  | |         let wait = unsafe { epoll_wait(epoll_fd, events.as_mut_ptr(), 1024, -1) };
[INFO] [stdout] 56  | |         unsafe { events.set_len(wait as usize) };
[INFO] [stdout] ...   |
[INFO] [stdout] 139 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 140 |
[INFO] [stdout] 141 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::c_void`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ffi::c_void;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mem`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{io, mem};
[INFO] [stdout]   |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::BufReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RawFd`
[INFO] [stdout]  --> src/main.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::os::unix::io::{AsRawFd, RawFd};
[INFO] [stdout]   |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EPOLLONESHOT`, `F_GETFD`, `F_SETFD`, `READ_FLAGS`, `WRITE_FLAGS`, `close`, and `read`
[INFO] [stdout]   --> src/main.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 | ...::{close, epoll_create1, epoll_ctl, EPOLL_CTL_ADD, EPOLL_CTL_DEL, EPOLL_CTL_MOD, epoll_wait, EPOLLET, EPOLLHUP, EPOLLIN, EPOLLONESHOT, EPOLLOUT, EPOLLRDHUP, Event, F_GETFD, F_SETFD, F_SETFL, fcntl, O_NONBLOCK, READ_FLAGS, WRITE_FLAGS, read};
[INFO] [stdout]    |       ^^^^^                                                                                                                 ^^^^^^^^^^^^                               ^^^^^^^  ^^^^^^^                              ^^^^^^^^^^  ^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EPOLL_CTL_ADD`, `Event`, `READ_FLAGS`, and `epoll_ctl`
[INFO] [stdout]  --> src/epoll/epoll.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::epoll::epoll::ffi::{epoll_ctl, EPOLL_CTL_ADD, Event, READ_FLAGS};
[INFO] [stdout]   |                                ^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `epool` (bin "epool" test); 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/7d2afcda7a9c043d5175cbca3ab08f0acf02b13a/bin/rustc --crate-name epool --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=de1f60728d1c5775 -C extra-filename=-6d4c46a02d2b3b32 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 0)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 53  | /     loop {
[INFO] [stdout] 54  | |         events.clear();
[INFO] [stdout] 55  | |         let wait = unsafe { epoll_wait(epoll_fd, events.as_mut_ptr(), 1024, -1) };
[INFO] [stdout] 56  | |         unsafe { events.set_len(wait as usize) };
[INFO] [stdout] ...   |
[INFO] [stdout] 139 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 140 |
[INFO] [stdout] 141 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/main.rs:63:37
[INFO] [stdout]    |
[INFO] [stdout] 63 |                         Ok((stream, addr)) => {
[INFO] [stdout]    |                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:83:41
[INFO] [stdout]    |
[INFO] [stdout] 83 | ...                   let mut reader = sockets.get_mut(&(event.u64 as i32)).unwrap().read(&mut buffer);
[INFO] [stdout]    |                           ----^^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token` and `stream` are never read
[INFO] [stdout]   --> src/handler/handler.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct RequestContext {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 9  |     token: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 10 |     stream: TcpStream,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EPOLLONESHOT` is never used
[INFO] [stdout]   --> src/epoll/epoll.rs:18:15
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub const EPOLLONESHOT: i32 = 0x40000000;
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `READ_FLAGS` is never used
[INFO] [stdout]   --> src/epoll/epoll.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub const READ_FLAGS: i32 = EPOLLONESHOT | EPOLLIN;
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `WRITE_FLAGS` is never used
[INFO] [stdout]   --> src/epoll/epoll.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub const WRITE_FLAGS: i32 = EPOLLONESHOT | EPOLLOUT;
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `F_GETFD` is never used
[INFO] [stdout]   --> src/epoll/epoll.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const F_GETFD: i32 = 1;
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `F_SETFD` is never used
[INFO] [stdout]   --> src/epoll/epoll.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub const F_SETFD: i32 = 2;
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `close` is never used
[INFO] [stdout]   --> src/epoll/epoll.rs:35:16
[INFO] [stdout]    |
[INFO] [stdout] 35 |         pub fn close(fd: i32) -> i32;
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read` is never used
[INFO] [stdout]   --> src/epoll/epoll.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 41 |         pub fn read(fd: c_int, buffer: *mut c_void, count: isize) -> isize;
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:89:45
[INFO] [stdout]    |
[INFO] [stdout] 89 | ...                   stream.shutdown(Shutdown::Both);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 89 |                                             let _ = stream.shutdown(Shutdown::Both);
[INFO] [stdout]    |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not parse/generate dep info at: /opt/rustwide/target/debug/deps/epool-199dbb7408e03bca.d
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to write `/opt/rustwide/target/debug/.fingerprint/epool-199dbb7408e03bca/dep-bin-epool`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] running `Command { std: "docker" "inspect" "d29ea83b3cf28d8f55b938b17753325b138a8b7f02cb8480828f2cd9d1116175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d29ea83b3cf28d8f55b938b17753325b138a8b7f02cb8480828f2cd9d1116175", kill_on_drop: false }`
[INFO] [stdout] d29ea83b3cf28d8f55b938b17753325b138a8b7f02cb8480828f2cd9d1116175