[INFO] cloning repository https://github.com/iamgabrieloliveira/DNS-Server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamgabrieloliveira/DNS-Server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamgabrieloliveira%2FDNS-Server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamgabrieloliveira%2FDNS-Server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0bfadc0e1147e5af73fe82350d039612dbb50b26
[INFO] checking iamgabrieloliveira/DNS-Server against c60b92c03ca8a3b101eb9d57f51e2232690638c7 for pr-164148-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamgabrieloliveira%2FDNS-Server" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/iamgabrieloliveira/DNS-Server
[INFO] finished tweaking git repo https://github.com/iamgabrieloliveira/DNS-Server
[INFO] tweaked toml for git repo https://github.com/iamgabrieloliveira/DNS-Server written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/iamgabrieloliveira/DNS-Server on toolchain c60b92c03ca8a3b101eb9d57f51e2232690638c7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/iamgabrieloliveira/DNS-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" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c9ce8b52b08312996067c5e88c01a9f04830f61c923bd1d48136f79cf0b24986
[INFO] running `Command { std: "docker" "start" "c9ce8b52b08312996067c5e88c01a9f04830f61c923bd1d48136f79cf0b24986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9ce8b52b08312996067c5e88c01a9f04830f61c923bd1d48136f79cf0b24986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c9ce8b52b08312996067c5e88c01a9f04830f61c923bd1d48136f79cf0b24986" "/opt/rustwide/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9ce8b52b08312996067c5e88c01a9f04830f61c923bd1d48136f79cf0b24986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c9ce8b52b08312996067c5e88c01a9f04830f61c923bd1d48136f79cf0b24986" "/opt/rustwide/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking dns-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `&str` dns_server
[INFO] [stdout]   --> src/main.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |             return Err("End of buffer".into());
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 33 -             return Err("End of buffer".into());
[INFO] [stdout] 33 +             return Err("End of buffer");
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 33 -             return Err("End of buffer".into());
[INFO] [stdout] 33 +             return Err(<&str as Into<_>>::into("End of buffer"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str` dns_server
[INFO] [stdout]   --> src/main.rs:44:24
[INFO] [stdout]    |
[INFO] [stdout] 44 |             return Err("End of buffer".into());
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 44 -             return Err("End of buffer".into());
[INFO] [stdout] 44 +             return Err("End of buffer");
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 44 -             return Err("End of buffer".into());
[INFO] [stdout] 44 +             return Err(<&str as Into<_>>::into("End of buffer"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str` dns_server
[INFO] [stdout]   --> src/main.rs:51:24
[INFO] [stdout]    |
[INFO] [stdout] 51 |             return Err("End of buffer".into());
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 51 -             return Err("End of buffer".into());
[INFO] [stdout] 51 +             return Err("End of buffer");
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 51 -             return Err("End of buffer".into());
[INFO] [stdout] 51 +             return Err(<&str as Into<_>>::into("End of buffer"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str` dns_server
[INFO] [stdout]    --> src/main.rs:162:24
[INFO] [stdout]     |
[INFO] [stdout] 162 |             return Err("End of buffer".into());
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 162 -             return Err("End of buffer".into());
[INFO] [stdout] 162 +             return Err("End of buffer");
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 162 -             return Err("End of buffer".into());
[INFO] [stdout] 162 +             return Err(<&str as Into<_>>::into("End of buffer"));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str` dns_server
[INFO] [stdout]    --> src/main.rs:195:28
[INFO] [stdout]     |
[INFO] [stdout] 195 |                 return Err("Single label exceeds 63 characters of length".into());
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 195 -                 return Err("Single label exceeds 63 characters of length".into());
[INFO] [stdout] 195 +                 return Err("Single label exceeds 63 characters of length");
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 195 -                 return Err("Single label exceeds 63 characters of length".into());
[INFO] [stdout] 195 +                 return Err(<&str as Into<_>>::into("Single label exceeds 63 characters of length"));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dns-server` (bin "dns-server") due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `&str` dns_server
[INFO] [stdout]   --> src/main.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |             return Err("End of buffer".into());
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 33 -             return Err("End of buffer".into());
[INFO] [stdout] 33 +             return Err("End of buffer");
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 33 -             return Err("End of buffer".into());
[INFO] [stdout] 33 +             return Err(<&str as Into<_>>::into("End of buffer"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str` dns_server
[INFO] [stdout]   --> src/main.rs:44:24
[INFO] [stdout]    |
[INFO] [stdout] 44 |             return Err("End of buffer".into());
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 44 -             return Err("End of buffer".into());
[INFO] [stdout] 44 +             return Err("End of buffer");
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 44 -             return Err("End of buffer".into());
[INFO] [stdout] 44 +             return Err(<&str as Into<_>>::into("End of buffer"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str` dns_server
[INFO] [stdout]   --> src/main.rs:51:24
[INFO] [stdout]    |
[INFO] [stdout] 51 |             return Err("End of buffer".into());
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 51 -             return Err("End of buffer".into());
[INFO] [stdout] 51 +             return Err("End of buffer");
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 51 -             return Err("End of buffer".into());
[INFO] [stdout] 51 +             return Err(<&str as Into<_>>::into("End of buffer"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str` dns_server
[INFO] [stdout]    --> src/main.rs:162:24
[INFO] [stdout]     |
[INFO] [stdout] 162 |             return Err("End of buffer".into());
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 162 -             return Err("End of buffer".into());
[INFO] [stdout] 162 +             return Err("End of buffer");
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 162 -             return Err("End of buffer".into());
[INFO] [stdout] 162 +             return Err(<&str as Into<_>>::into("End of buffer"));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `&str` dns_server
[INFO] [stdout]    --> src/main.rs:195:28
[INFO] [stdout]     |
[INFO] [stdout] 195 |                 return Err("Single label exceeds 63 characters of length".into());
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 195 -                 return Err("Single label exceeds 63 characters of length".into());
[INFO] [stdout] 195 +                 return Err("Single label exceeds 63 characters of length");
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 195 -                 return Err("Single label exceeds 63 characters of length".into());
[INFO] [stdout] 195 +                 return Err(<&str as Into<_>>::into("Single label exceeds 63 characters of length"));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dns-server` (bin "dns-server" test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "c9ce8b52b08312996067c5e88c01a9f04830f61c923bd1d48136f79cf0b24986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9ce8b52b08312996067c5e88c01a9f04830f61c923bd1d48136f79cf0b24986", kill_on_drop: false }`
[INFO] [stdout] c9ce8b52b08312996067c5e88c01a9f04830f61c923bd1d48136f79cf0b24986
