[INFO] cloning repository https://github.com/GenericallyNamed/rust_serv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GenericallyNamed/rust_serv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGenericallyNamed%2Frust_serv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGenericallyNamed%2Frust_serv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c20a68bc9f53370a31bd8a4f3e6c9afeeed2280e
[INFO] checking GenericallyNamed/rust_serv against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGenericallyNamed%2Frust_serv" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GenericallyNamed/rust_serv on toolchain a3dffdb3a32d0dedc198f9de7d43173f3eb6727b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GenericallyNamed/rust_serv
[INFO] finished tweaking git repo https://github.com/GenericallyNamed/rust_serv
[INFO] tweaked toml for git repo https://github.com/GenericallyNamed/rust_serv written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/GenericallyNamed/rust_serv 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" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d45dfde62f2fc535fed405e2d2010a7dbad02d3a4595ed0dc080cdcccf176026
[INFO] running `Command { std: "docker" "start" "-a" "d45dfde62f2fc535fed405e2d2010a7dbad02d3a4595ed0dc080cdcccf176026", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d45dfde62f2fc535fed405e2d2010a7dbad02d3a4595ed0dc080cdcccf176026", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d45dfde62f2fc535fed405e2d2010a7dbad02d3a4595ed0dc080cdcccf176026", kill_on_drop: false }`
[INFO] [stdout] d45dfde62f2fc535fed405e2d2010a7dbad02d3a4595ed0dc080cdcccf176026
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f566cc99e133dc53cf6ecfd7a6016961a88e8f035280611af9ca7f4647fddfa9
[INFO] running `Command { std: "docker" "start" "-a" "f566cc99e133dc53cf6ecfd7a6016961a88e8f035280611af9ca7f4647fddfa9", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_serv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0252]: the name `TcpListener` is defined multiple times
[INFO] [stdout]  --> src/main.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::TcpListener;
[INFO] [stdout]   |     --------------------- previous import of the type `TcpListener` here
[INFO] [stdout] ...
[INFO] [stdout] 6 |     net::{TcpListener, TcpStream},
[INFO] [stdout]   |           ^^^^^^^^^^^--
[INFO] [stdout]   |           |
[INFO] [stdout]   |           `TcpListener` reimported here
[INFO] [stdout]   |           help: remove unnecessary import
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TcpListener` must be defined only once in the type namespace of this module
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0252]: the name `TcpListener` is defined multiple times
[INFO] [stdout]  --> src/main.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::TcpListener;
[INFO] [stdout]   |     --------------------- previous import of the type `TcpListener` here
[INFO] [stdout] ...
[INFO] [stdout] 6 |     net::{TcpListener, TcpStream},
[INFO] [stdout]   |           ^^^^^^^^^^^--
[INFO] [stdout]   |           |
[INFO] [stdout]   |           `TcpListener` reimported here
[INFO] [stdout]   |           help: remove unnecessary import
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TcpListener` must be defined only once in the type namespace of this module
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpListener`
[INFO] [stdout]  --> src/main.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |     net::{TcpListener, TcpStream},
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpListener`
[INFO] [stdout]  --> src/main.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |     net::{TcpListener, TcpStream},
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0252`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0252`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_serv` (bin "rust_serv") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust_serv` (bin "rust_serv" test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "f566cc99e133dc53cf6ecfd7a6016961a88e8f035280611af9ca7f4647fddfa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f566cc99e133dc53cf6ecfd7a6016961a88e8f035280611af9ca7f4647fddfa9", kill_on_drop: false }`
[INFO] [stdout] f566cc99e133dc53cf6ecfd7a6016961a88e8f035280611af9ca7f4647fddfa9
