[INFO] cloning repository https://github.com/Certaincape318/IDK
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Certaincape318/IDK" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCertaincape318%2FIDK", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCertaincape318%2FIDK'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e913b47ab92fefbc1a1677159b8b6f625e522db2
[INFO] checking Certaincape318/IDK against beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCertaincape318%2FIDK" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Certaincape318/IDK on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Certaincape318/IDK
[INFO] finished tweaking git repo https://github.com/Certaincape318/IDK
[INFO] tweaked toml for git repo https://github.com/Certaincape318/IDK written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Certaincape318/IDK already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d8a6bafb746c27aeb16b88569b753e741913a768693b1229cced6f32b7b9e6fc
[INFO] running `Command { std: "docker" "start" "-a" "d8a6bafb746c27aeb16b88569b753e741913a768693b1229cced6f32b7b9e6fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8a6bafb746c27aeb16b88569b753e741913a768693b1229cced6f32b7b9e6fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8a6bafb746c27aeb16b88569b753e741913a768693b1229cced6f32b7b9e6fc", kill_on_drop: false }`
[INFO] [stdout] d8a6bafb746c27aeb16b88569b753e741913a768693b1229cced6f32b7b9e6fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48a8da944d170dc64180b8e65dcd4282601e39e004f54fb6bb2fb5ac9d692213
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "48a8da944d170dc64180b8e65dcd4282601e39e004f54fb6bb2fb5ac9d692213", kill_on_drop: false }`
[INFO] [stderr]     Checking CrabChat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/main.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 |     use std::sync::{Arc, Mutex, mpsc};
[INFO] [stdout]   |                     ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]   --> src/main.rs:75:18
[INFO] [stdout]    |
[INFO] [stdout] 75 |             match(msg)
[INFO] [stdout]    |                  ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]   --> src/main.rs:91:14
[INFO] [stdout]    |
[INFO] [stdout] 91 |         match(socket_msg)
[INFO] [stdout]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/main.rs:124:22
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 match(msg)
[INFO] [stdout]     |                      ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 Err(e) => { println!("ERROR CONNECTING"); }
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:78:42
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 ThreadMsg::NewConnection(e) => { println!("OH NOES"); }
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/main.rs:93:16
[INFO] [stdout]    |
[INFO] [stdout] 93 |             Ok(msg) =>
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:111:17
[INFO] [stdout]     |
[INFO] [stdout] 111 |             Err(e) => { println!("SOMETHING EVIL"); }
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]    --> src/main.rs:127:43
[INFO] [stdout]     |
[INFO] [stdout] 127 |                     ThreadMsg::NewMessage(msg) =>
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:35:25
[INFO] [stdout]    |
[INFO] [stdout] 35 |                     let mut tx_clone = tx.clone();
[INFO] [stdout]    |                         ----^^^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]  --> src/main.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 |     use std::sync::{Arc, Mutex, mpsc};
[INFO] [stdout]   |                     ^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]   --> src/main.rs:75:18
[INFO] [stdout]    |
[INFO] [stdout] 75 |             match(msg)
[INFO] [stdout]    |                  ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]   --> src/main.rs:91:14
[INFO] [stdout]    |
[INFO] [stdout] 91 |         match(socket_msg)
[INFO] [stdout]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/main.rs:124:22
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 match(msg)
[INFO] [stdout]     |                      ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let mut data_buf = [0u8; 1024];
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `CrabChat` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `crab_chat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `CrabChatServer` should have a snake case name
[INFO] [stdout]  --> src/main.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod CrabChatServer
[INFO] [stdout]   |         ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `crab_chat_server`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 |     CrabChatServer::start_server();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             tx_write.send(new_connection_msg);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:77:49
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 ThreadMsg::NewMessage(msg) => { stream.write(msg.as_bytes()); },
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:100:21
[INFO] [stdout]     |
[INFO] [stdout] 100 |                     tx_write.send(out_msg);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:38:21
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 Err(e) => { println!("ERROR CONNECTING"); }
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:78:42
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 ThreadMsg::NewConnection(e) => { println!("OH NOES"); }
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/main.rs:93:16
[INFO] [stdout]    |
[INFO] [stdout] 93 |             Ok(msg) =>
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:111:17
[INFO] [stdout]     |
[INFO] [stdout] 111 |             Err(e) => { println!("SOMETHING EVIL"); }
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]    --> src/main.rs:127:43
[INFO] [stdout]     |
[INFO] [stdout] 127 |                     ThreadMsg::NewMessage(msg) =>
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:35:25
[INFO] [stdout]    |
[INFO] [stdout] 35 |                     let mut tx_clone = tx.clone();
[INFO] [stdout]    |                         ----^^^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let mut data_buf = [0u8; 1024];
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `CrabChat` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `crab_chat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `CrabChatServer` should have a snake case name
[INFO] [stdout]  --> src/main.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod CrabChatServer
[INFO] [stdout]   |         ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `crab_chat_server`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 |     CrabChatServer::start_server();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             tx_write.send(new_connection_msg);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:77:49
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 ThreadMsg::NewMessage(msg) => { stream.write(msg.as_bytes()); },
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:100:21
[INFO] [stdout]     |
[INFO] [stdout] 100 |                     tx_write.send(out_msg);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "48a8da944d170dc64180b8e65dcd4282601e39e004f54fb6bb2fb5ac9d692213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48a8da944d170dc64180b8e65dcd4282601e39e004f54fb6bb2fb5ac9d692213", kill_on_drop: false }`
[INFO] [stdout] 48a8da944d170dc64180b8e65dcd4282601e39e004f54fb6bb2fb5ac9d692213
