[INFO] cloning repository https://github.com/snorreks/Nettverksprogrammering
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/snorreks/Nettverksprogrammering" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnorreks%2FNettverksprogrammering", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnorreks%2FNettverksprogrammering'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5dd910f6d01b06011c10f4530b7e588db8d48c2e
[INFO] checking snorreks/Nettverksprogrammering/5dd910f6d01b06011c10f4530b7e588db8d48c2e against master#5a45ab9738330fb317d49e3594c2db5248b1e971 for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnorreks%2FNettverksprogrammering" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/snorreks/Nettverksprogrammering on toolchain 5a45ab9738330fb317d49e3594c2db5248b1e971
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/snorreks/Nettverksprogrammering
[INFO] finished tweaking git repo https://github.com/snorreks/Nettverksprogrammering
[INFO] tweaked toml for git repo https://github.com/snorreks/Nettverksprogrammering written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/snorreks/Nettverksprogrammering 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" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2435029fe51e67d952020e573abf7ab9091078ccb9c50d19a77487fe6183a92
[INFO] running `Command { std: "docker" "start" "-a" "d2435029fe51e67d952020e573abf7ab9091078ccb9c50d19a77487fe6183a92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2435029fe51e67d952020e573abf7ab9091078ccb9c50d19a77487fe6183a92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2435029fe51e67d952020e573abf7ab9091078ccb9c50d19a77487fe6183a92", kill_on_drop: false }`
[INFO] [stdout] d2435029fe51e67d952020e573abf7ab9091078ccb9c50d19a77487fe6183a92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+5a45ab9738330fb317d49e3594c2db5248b1e971" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81323a46d0c19874d959c2809290f1d7dc35061330e014ee062ca7412aacf736
[INFO] running `Command { std: "docker" "start" "-a" "81323a46d0c19874d959c2809290f1d7dc35061330e014ee062ca7412aacf736", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking dotenv v0.9.0
[INFO] [stderr]    Compiling diesel_derives v1.4.0
[INFO] [stderr]     Checking diesel v1.4.2
[INFO] [stderr]     Checking nettverksprogrammering v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/bin/oving4_client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `Error`, and `Read`
[INFO] [stdout]  --> src/bin/oving4_client.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, BufReader, Error, Read, Write};
[INFO] [stdout]   |                        ^^^^^^^^^  ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::from_utf8`
[INFO] [stdout]  --> src/bin/oving4_client.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::str::from_utf8;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/bin/oving4_client.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, BufReader, Error, Read, Write};
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number_of_bytes`
[INFO] [stdout]   --> src/bin/oving4_client.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let number_of_bytes: usize = 0;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_number_of_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_addr`
[INFO] [stdout]   --> src/bin/oving4_client.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 |         Ok((number_of_bytes, src_addr)) => {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_src_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/bin/oving4_client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `Error`, and `Read`
[INFO] [stdout]  --> src/bin/oving4_client.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, BufReader, Error, Read, Write};
[INFO] [stdout]   |                        ^^^^^^^^^  ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::from_utf8`
[INFO] [stdout]  --> src/bin/oving4_client.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::str::from_utf8;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_client` is never used
[INFO] [stdout]   --> src/bin/o3/mod.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn run_client() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_input_from_user` is never used
[INFO] [stdout]   --> src/bin/o3/mod.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn get_input_from_user(name: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_operation_from_user` is never used
[INFO] [stdout]   --> src/bin/o3/mod.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn get_operation_from_user() -> char {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/bin/oving4_client.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, BufReader, Error, Read, Write};
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number_of_bytes`
[INFO] [stdout]   --> src/bin/oving4_client.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let number_of_bytes: usize = 0;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_number_of_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_addr`
[INFO] [stdout]   --> src/bin/oving4_client.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 |         Ok((number_of_bytes, src_addr)) => {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_src_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_server` is never used
[INFO] [stdout]  --> src/bin/o3/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn run_server() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `server_handle_client` is never used
[INFO] [stdout]   --> src/bin/o3/mod.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn server_handle_client(mut stream: TcpStream) -> Result<(), Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_operation` is never used
[INFO] [stdout]    --> src/bin/o3/mod.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn calculate_operation(input_a: &str, input_b: &str, operation: &str) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_client` is never used
[INFO] [stdout]   --> src/bin/o3/mod.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn run_client() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_input_from_user` is never used
[INFO] [stdout]   --> src/bin/o3/mod.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn get_input_from_user(name: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_operation_from_user` is never used
[INFO] [stdout]   --> src/bin/o3/mod.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn get_operation_from_user() -> char {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_server` is never used
[INFO] [stdout]  --> src/bin/o3/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn run_server() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `server_handle_client` is never used
[INFO] [stdout]   --> src/bin/o3/mod.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn server_handle_client(mut stream: TcpStream) -> Result<(), Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_operation` is never used
[INFO] [stdout]    --> src/bin/o3/mod.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn calculate_operation(input_a: &str, input_b: &str, operation: &str) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.78s
[INFO] running `Command { std: "docker" "inspect" "81323a46d0c19874d959c2809290f1d7dc35061330e014ee062ca7412aacf736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81323a46d0c19874d959c2809290f1d7dc35061330e014ee062ca7412aacf736", kill_on_drop: false }`
[INFO] [stdout] 81323a46d0c19874d959c2809290f1d7dc35061330e014ee062ca7412aacf736