[INFO] cloning repository https://github.com/tomatoaiu/rust-udp-echo-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomatoaiu/rust-udp-echo-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomatoaiu%2Frust-udp-echo-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomatoaiu%2Frust-udp-echo-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48dc4518736ca3aac5f03010fc337a689333bc5f
[INFO] checking tomatoaiu/rust-udp-echo-server against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomatoaiu%2Frust-udp-echo-server" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomatoaiu/rust-udp-echo-server on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tomatoaiu/rust-udp-echo-server
[INFO] finished tweaking git repo https://github.com/tomatoaiu/rust-udp-echo-server
[INFO] tweaked toml for git repo https://github.com/tomatoaiu/rust-udp-echo-server written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/tomatoaiu/rust-udp-echo-server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18e3416e62ad22bf670bc0728e690abac1b94b374b2a23d0395f20bc2e153984
[INFO] running `Command { std: "docker" "start" "-a" "18e3416e62ad22bf670bc0728e690abac1b94b374b2a23d0395f20bc2e153984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18e3416e62ad22bf670bc0728e690abac1b94b374b2a23d0395f20bc2e153984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18e3416e62ad22bf670bc0728e690abac1b94b374b2a23d0395f20bc2e153984", kill_on_drop: false }`
[INFO] [stdout] 18e3416e62ad22bf670bc0728e690abac1b94b374b2a23d0395f20bc2e153984
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d26265154a901e36052cd6ec88e395b82d69bfb8b609aeed4f3644cb2a37375
[INFO] running `Command { std: "docker" "start" "-a" "1d26265154a901e36052cd6ec88e395b82d69bfb8b609aeed4f3644cb2a37375", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking rust-udp-echo-server v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/main.rs (3 fixes)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /         loop {
[INFO] [stdout] 15 | |             let mut buf = [0; 10];
[INFO] [stdout] 16 | |             let (_amt, src) = socket.recv_from(&mut buf)?;
[INFO] [stdout] 17 | |             println!("From: {:?}, buf: {:?}", src, buf);
[INFO] [stdout] 18 | |
[INFO] [stdout] 19 | |             socket.send_to(&buf, send_to)?;
[INFO] [stdout] 20 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 21 |       }
[INFO] [stdout] 22 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /         loop {
[INFO] [stdout] 15 | |             let mut buf = [0; 10];
[INFO] [stdout] 16 | |             let (_amt, src) = socket.recv_from(&mut buf)?;
[INFO] [stdout] 17 | |             println!("From: {:?}, buf: {:?}", src, buf);
[INFO] [stdout] 18 | |
[INFO] [stdout] 19 | |             socket.send_to(&buf, send_to)?;
[INFO] [stdout] 20 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 21 |       }
[INFO] [stdout] 22 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking rust-udp-echo-server v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /         loop {
[INFO] [stdout] 15 | |             let mut buf = [0; 10];
[INFO] [stdout] 16 | |             let (_amt, src) = socket.recv_from(&mut buf)?;
[INFO] [stdout] 17 | |             println!("From: {:?}, buf: {:?}", src, buf);
[INFO] [stdout] 18 | |
[INFO] [stdout] 19 | |             socket.send_to(&buf, send_to)?;
[INFO] [stdout] 20 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 21 |       }
[INFO] [stdout] 22 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /         loop {
[INFO] [stdout] 15 | |             let mut buf = [0; 10];
[INFO] [stdout] 16 | |             let (_amt, src) = socket.recv_from(&mut buf)?;
[INFO] [stdout] 17 | |             println!("From: {:?}, buf: {:?}", src, buf);
[INFO] [stdout] 18 | |
[INFO] [stdout] 19 | |             socket.send_to(&buf, send_to)?;
[INFO] [stdout] 20 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 21 |       }
[INFO] [stdout] 22 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "1d26265154a901e36052cd6ec88e395b82d69bfb8b609aeed4f3644cb2a37375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d26265154a901e36052cd6ec88e395b82d69bfb8b609aeed4f3644cb2a37375", kill_on_drop: false }`
[INFO] [stdout] 1d26265154a901e36052cd6ec88e395b82d69bfb8b609aeed4f3644cb2a37375