[INFO] cloning repository https://github.com/Shivam412/toy-async-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Shivam412/toy-async-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShivam412%2Ftoy-async-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShivam412%2Ftoy-async-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53b1c60a2a1dc93c29eb44d7f138dd4b67bd6506
[INFO] checking Shivam412/toy-async-server against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShivam412%2Ftoy-async-server" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Shivam412/toy-async-server
[INFO] finished tweaking git repo https://github.com/Shivam412/toy-async-server
[INFO] tweaked toml for git repo https://github.com/Shivam412/toy-async-server written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Shivam412/toy-async-server on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Shivam412/toy-async-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6220887c42d17e4c06b71c4ca51aa61396d3bc6ebf1dec5c6d7ceea5255b02e4
[INFO] running `Command { std: "docker" "start" "-a" "6220887c42d17e4c06b71c4ca51aa61396d3bc6ebf1dec5c6d7ceea5255b02e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6220887c42d17e4c06b71c4ca51aa61396d3bc6ebf1dec5c6d7ceea5255b02e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6220887c42d17e4c06b71c4ca51aa61396d3bc6ebf1dec5c6d7ceea5255b02e4", kill_on_drop: false }`
[INFO] [stdout] 6220887c42d17e4c06b71c4ca51aa61396d3bc6ebf1dec5c6d7ceea5255b02e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27fa2c4000a6c6793b31d6dd7f09d2576e363a34c0b4f13face7edd5247214cd
[INFO] running `Command { std: "docker" "start" "-a" "27fa2c4000a6c6793b31d6dd7f09d2576e363a34c0b4f13face7edd5247214cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking toy-async-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `readable` and `writable` are never read
[INFO] [stdout]   --> src/runtime/polling/epoll.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Event {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout]  8 |     pub key: RawFd,
[INFO] [stdout]  9 |     pub readable: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 10 |     pub writable: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/runtime/net/tcp_listener.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn accept(&self) -> Accept {
[INFO] [stdout]    |                   ^^^^^     ------ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn accept(&self) -> Accept<'_> {
[INFO] [stdout]    |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `readable` and `writable` are never read
[INFO] [stdout]   --> src/runtime/polling/epoll.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Event {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout]  8 |     pub key: RawFd,
[INFO] [stdout]  9 |     pub readable: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 10 |     pub writable: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Event` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/runtime/net/tcp_listener.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn accept(&self) -> Accept {
[INFO] [stdout]    |                   ^^^^^     ------ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn accept(&self) -> Accept<'_> {
[INFO] [stdout]    |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "27fa2c4000a6c6793b31d6dd7f09d2576e363a34c0b4f13face7edd5247214cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27fa2c4000a6c6793b31d6dd7f09d2576e363a34c0b4f13face7edd5247214cd", kill_on_drop: false }`
[INFO] [stdout] 27fa2c4000a6c6793b31d6dd7f09d2576e363a34c0b4f13face7edd5247214cd
