[INFO] cloning repository https://github.com/drconopoima/learning-socket
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/drconopoima/learning-socket" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrconopoima%2Flearning-socket", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrconopoima%2Flearning-socket'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62f6edee482e054e998399adbbb4d491eb02853c
[INFO] testing drconopoima/learning-socket against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrconopoima%2Flearning-socket" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/drconopoima/learning-socket on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/drconopoima/learning-socket
[INFO] finished tweaking git repo https://github.com/drconopoima/learning-socket
[INFO] tweaked toml for git repo https://github.com/drconopoima/learning-socket written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/drconopoima/learning-socket already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65d73db5917220d932533784bc6d7d68ba88536ad690b9a49756eff9ada874c3
[INFO] running `Command { std: "docker" "start" "-a" "65d73db5917220d932533784bc6d7d68ba88536ad690b9a49756eff9ada874c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65d73db5917220d932533784bc6d7d68ba88536ad690b9a49756eff9ada874c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65d73db5917220d932533784bc6d7d68ba88536ad690b9a49756eff9ada874c3", kill_on_drop: false }`
[INFO] [stdout] 65d73db5917220d932533784bc6d7d68ba88536ad690b9a49756eff9ada874c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9656e2d8184ad209656465b462144cf14d49fd93fe54416a42e951de89b37692
[INFO] running `Command { std: "docker" "start" "-a" "9656e2d8184ad209656465b462144cf14d49fd93fe54416a42e951de89b37692", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-socket v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |                   panic!(format!(
[INFO] [stdout]    |  ________________________^
[INFO] [stdout] 13 | |                     "learning-socket.main.handle_client: Could not read line from stream {:?}",
[INFO] [stdout] 14 | |                     error
[INFO] [stdout] 15 | |                 ))
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 12 |                 panic!(
[INFO] [stdout] 13 |                     "learning-socket.main.handle_client: Could not read line from stream {:?}",
[INFO] [stdout] 14 |                     error
[INFO] [stdout] 15 |                 )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |           panic!(format!(
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 24 | |             "learning-socket.main: Could not bind to socket. {:?}",
[INFO] [stdout] 25 | |             error
[INFO] [stdout] 26 | |         ))
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 23 |         panic!(
[INFO] [stdout] 24 |             "learning-socket.main: Could not bind to socket. {:?}",
[INFO] [stdout] 25 |             error
[INFO] [stdout] 26 |         )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "9656e2d8184ad209656465b462144cf14d49fd93fe54416a42e951de89b37692", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9656e2d8184ad209656465b462144cf14d49fd93fe54416a42e951de89b37692", kill_on_drop: false }`
[INFO] [stdout] 9656e2d8184ad209656465b462144cf14d49fd93fe54416a42e951de89b37692
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d62f30a7bac0de77f247c6507fe7040b6849306cad1d32549bd83f5262075664
[INFO] running `Command { std: "docker" "start" "-a" "d62f30a7bac0de77f247c6507fe7040b6849306cad1d32549bd83f5262075664", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-socket v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 |                   panic!(format!(
[INFO] [stdout]    |  ________________________^
[INFO] [stdout] 13 | |                     "learning-socket.main.handle_client: Could not read line from stream {:?}",
[INFO] [stdout] 14 | |                     error
[INFO] [stdout] 15 | |                 ))
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 12 |                 panic!(
[INFO] [stdout] 13 |                     "learning-socket.main.handle_client: Could not read line from stream {:?}",
[INFO] [stdout] 14 |                     error
[INFO] [stdout] 15 |                 )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |           panic!(format!(
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 24 | |             "learning-socket.main: Could not bind to socket. {:?}",
[INFO] [stdout] 25 | |             error
[INFO] [stdout] 26 | |         ))
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 23 |         panic!(
[INFO] [stdout] 24 |             "learning-socket.main: Could not bind to socket. {:?}",
[INFO] [stdout] 25 |             error
[INFO] [stdout] 26 |         )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d62f30a7bac0de77f247c6507fe7040b6849306cad1d32549bd83f5262075664", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d62f30a7bac0de77f247c6507fe7040b6849306cad1d32549bd83f5262075664", kill_on_drop: false }`
[INFO] [stdout] d62f30a7bac0de77f247c6507fe7040b6849306cad1d32549bd83f5262075664
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 36b9eacbe09d0ff39b0bd033d99dded2dd5003af804b8dbf51faa03ba2a7fe3a
[INFO] running `Command { std: "docker" "start" "-a" "36b9eacbe09d0ff39b0bd033d99dded2dd5003af804b8dbf51faa03ba2a7fe3a", kill_on_drop: false }`
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/main.rs:12:24
[INFO] [stderr]    |
[INFO] [stderr] 12 |                   panic!(format!(
[INFO] [stderr]    |  ________________________^
[INFO] [stderr] 13 | |                     "learning-socket.main.handle_client: Could not read line from stream {:?}",
[INFO] [stderr] 14 | |                     error
[INFO] [stderr] 15 | |                 ))
[INFO] [stderr]    | |_________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]    = note: this is no longer accepted in Rust 2021
[INFO] [stderr]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]    |
[INFO] [stderr] 12 |                 panic!(
[INFO] [stderr] 13 |                     "learning-socket.main.handle_client: Could not read line from stream {:?}",
[INFO] [stderr] 14 |                     error
[INFO] [stderr] 15 |                 )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/main.rs:23:16
[INFO] [stderr]    |
[INFO] [stderr] 23 |           panic!(format!(
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 24 | |             "learning-socket.main: Could not bind to socket. {:?}",
[INFO] [stderr] 25 | |             error
[INFO] [stderr] 26 | |         ))
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this is no longer accepted in Rust 2021
[INFO] [stderr]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]    |
[INFO] [stderr] 23 |         panic!(
[INFO] [stderr] 24 |             "learning-socket.main: Could not bind to socket. {:?}",
[INFO] [stderr] 25 |             error
[INFO] [stderr] 26 |         )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learning_socket-2f63e8e91ef0591f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "36b9eacbe09d0ff39b0bd033d99dded2dd5003af804b8dbf51faa03ba2a7fe3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36b9eacbe09d0ff39b0bd033d99dded2dd5003af804b8dbf51faa03ba2a7fe3a", kill_on_drop: false }`
[INFO] [stdout] 36b9eacbe09d0ff39b0bd033d99dded2dd5003af804b8dbf51faa03ba2a7fe3a