Nov 28 13:50:19.363 INFO checking EdenCao/rust_learning against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 13:50:19.364 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-7/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 13:50:19.747 INFO [stdout] a9b6ca35bbacc6926bbad867f4a377d02bc59c7317869307d970a99b951ab3bd
Nov 28 13:50:19.750 INFO running `"docker" "start" "-a" "a9b6ca35bbacc6926bbad867f4a377d02bc59c7317869307d970a99b951ab3bd"`
Nov 28 13:50:21.125 INFO [stderr] usermod: no changes
Nov 28 13:50:21.264 INFO [stderr]     Checking rust_learning v0.1.0 (/source)
Nov 28 13:50:22.960 INFO [stderr] warning: field is never used: `query`
Nov 28 13:50:22.960 INFO [stderr]   --> src/read.rs:27:5
Nov 28 13:50:22.960 INFO [stderr]    |
Nov 28 13:50:22.960 INFO [stderr] 27 |     query: String,
Nov 28 13:50:22.960 INFO [stderr]    |     ^^^^^^^^^^^^^
Nov 28 13:50:22.960 INFO [stderr]    |
Nov 28 13:50:22.960 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 13:50:22.960 INFO [stderr] 
Nov 28 13:50:22.960 INFO [stderr] warning: function is never used: `search_case_insensitive`
Nov 28 13:50:22.960 INFO [stderr]   --> src/read.rs:82:1
Nov 28 13:50:22.960 INFO [stderr]    |
Nov 28 13:50:22.960 INFO [stderr] 82 | fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
Nov 28 13:50:22.960 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:50:22.960 INFO [stderr] 
Nov 28 13:50:23.140 INFO [stderr] warning: unused variable: `six`
Nov 28 13:50:23.140 INFO [stderr]   --> src/match.rs:25:7
Nov 28 13:50:23.140 INFO [stderr]    |
Nov 28 13:50:23.140 INFO [stderr] 25 |   let six = plus_one(five);
Nov 28 13:50:23.140 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Nov 28 13:50:23.176 INFO [stderr]    |
Nov 28 13:50:23.176 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:23.176 INFO [stderr] 
Nov 28 13:50:23.176 INFO [stderr] warning: unused variable: `none`
Nov 28 13:50:23.176 INFO [stderr]   --> src/match.rs:26:7
Nov 28 13:50:23.176 INFO [stderr]    |
Nov 28 13:50:23.176 INFO [stderr] 26 |   let none = plus_one(None);
Nov 28 13:50:23.176 INFO [stderr]    |       ^^^^ help: consider using `_none` instead
Nov 28 13:50:23.176 INFO [stderr] 
Nov 28 13:50:23.196 INFO [stderr] warning: variant is never constructed: `Penny`
Nov 28 13:50:23.196 INFO [stderr]  --> src/match.rs:2:3
Nov 28 13:50:23.196 INFO [stderr]   |
Nov 28 13:50:23.196 INFO [stderr] 2 |   Penny,
Nov 28 13:50:23.196 INFO [stderr]   |   ^^^^^
Nov 28 13:50:23.196 INFO [stderr]   |
Nov 28 13:50:23.196 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 13:50:23.196 INFO [stderr] 
Nov 28 13:50:23.196 INFO [stderr] warning: variant is never constructed: `Nickel`
Nov 28 13:50:23.196 INFO [stderr]  --> src/match.rs:3:3
Nov 28 13:50:23.196 INFO [stderr]   |
Nov 28 13:50:23.196 INFO [stderr] 3 |   Nickel,
Nov 28 13:50:23.196 INFO [stderr]   |   ^^^^^^
Nov 28 13:50:23.196 INFO [stderr] 
Nov 28 13:50:23.196 INFO [stderr] warning: variant is never constructed: `Dime`
Nov 28 13:50:23.196 INFO [stderr]  --> src/match.rs:4:3
Nov 28 13:50:23.196 INFO [stderr]   |
Nov 28 13:50:23.197 INFO [stderr] 4 |   Dime,
Nov 28 13:50:23.197 INFO [stderr]   |   ^^^^
Nov 28 13:50:23.197 INFO [stderr] 
Nov 28 13:50:23.197 INFO [stderr] warning: variant is never constructed: `Alabama`
Nov 28 13:50:23.197 INFO [stderr]   --> src/match.rs:10:3
Nov 28 13:50:23.197 INFO [stderr]    |
Nov 28 13:50:23.197 INFO [stderr] 10 |   Alabama,
Nov 28 13:50:23.197 INFO [stderr]    |   ^^^^^^^
Nov 28 13:50:23.197 INFO [stderr] 
Nov 28 13:50:24.760 INFO [stderr] warning: unused variable: `integer`
Nov 28 13:50:24.760 INFO [stderr]   --> src/generics.rs:14:7
Nov 28 13:50:24.760 INFO [stderr]    |
Nov 28 13:50:24.760 INFO [stderr] 14 |   let integer = Point {
Nov 28 13:50:24.760 INFO [stderr]    |       ^^^^^^^ help: consider using `_integer` instead
Nov 28 13:50:24.760 INFO [stderr]    |
Nov 28 13:50:24.760 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:24.760 INFO [stderr] 
Nov 28 13:50:24.796 INFO [stderr] warning: field is never used: `y`
Nov 28 13:50:24.797 INFO [stderr]  --> src/generics.rs:3:3
Nov 28 13:50:24.797 INFO [stderr]   |
Nov 28 13:50:24.797 INFO [stderr] 3 |   y: T
Nov 28 13:50:24.797 INFO [stderr]   |   ^^^^
Nov 28 13:50:24.832 INFO [stderr]   |
Nov 28 13:50:24.832 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 13:50:24.832 INFO [stderr] 
Nov 28 13:50:25.241 INFO [stderr] warning: field is never used: `query`
Nov 28 13:50:25.241 INFO [stderr]   --> src/read.rs:27:5
Nov 28 13:50:25.241 INFO [stderr]    |
Nov 28 13:50:25.241 INFO [stderr] 27 |     query: String,
Nov 28 13:50:25.241 INFO [stderr]    |     ^^^^^^^^^^^^^
Nov 28 13:50:25.288 INFO [stderr] warning: doc comment not used by rustdoc
Nov 28 13:50:25.288 INFO [stderr]   --> src/struct_ex.rs:17:3
Nov 28 13:50:25.288 INFO [stderr]    |
Nov 28 13:50:25.288 INFO [stderr] 17 |   ///
Nov 28 13:50:25.288 INFO [stderr]    |   ^^^
Nov 28 13:50:25.288 INFO [stderr]    |
Nov 28 13:50:25.288 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Nov 28 13:50:25.288 INFO [stderr] 
Nov 28 13:50:25.288 INFO [stderr]    |
Nov 28 13:50:25.288 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 13:50:25.288 INFO [stderr] 
Nov 28 13:50:25.728 INFO [stderr] warning: unused import: `std::rc::Rc`
Nov 28 13:50:25.728 INFO [stderr]  --> src/shared_mem.rs:1:5
Nov 28 13:50:25.728 INFO [stderr]   |
Nov 28 13:50:25.728 INFO [stderr] 1 | use std::rc::Rc;
Nov 28 13:50:25.728 INFO [stderr]   |     ^^^^^^^^^^^
Nov 28 13:50:25.728 INFO [stderr]   |
Nov 28 13:50:25.728 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 13:50:25.728 INFO [stderr] 
Nov 28 13:50:26.765 INFO [stderr] warning: unused variable: `six`
Nov 28 13:50:26.765 INFO [stderr]   --> src/enum.rs:20:7
Nov 28 13:50:26.765 INFO [stderr]    |
Nov 28 13:50:26.765 INFO [stderr] 20 |   let six = IpAddrKind::V6;
Nov 28 13:50:26.766 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Nov 28 13:50:26.779 INFO [stderr]    |
Nov 28 13:50:26.780 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:26.780 INFO [stderr] 
Nov 28 13:50:26.780 INFO [stderr] warning: unused variable: `home`
Nov 28 13:50:26.781 INFO [stderr]   --> src/enum.rs:27:7
Nov 28 13:50:26.781 INFO [stderr]    |
Nov 28 13:50:26.781 INFO [stderr] 27 |   let home = IpAddr {
Nov 28 13:50:26.782 INFO [stderr]    |       ^^^^ help: consider using `_home` instead
Nov 28 13:50:26.782 INFO [stderr] 
Nov 28 13:50:26.782 INFO [stderr] warning: unused variable: `op_type`
Nov 28 13:50:26.782 INFO [stderr]   --> src/enum.rs:35:10
Nov 28 13:50:26.782 INFO [stderr]    |
Nov 28 13:50:26.782 INFO [stderr] 35 | fn route(op_type: IpAddrKind) { }
Nov 28 13:50:26.782 INFO [stderr]    |          ^^^^^^^ help: consider using `_op_type` instead
Nov 28 13:50:26.782 INFO [stderr] 
Nov 28 13:50:26.792 INFO [stderr] warning: field is never used: `kind`
Nov 28 13:50:26.792 INFO [stderr]   --> src/enum.rs:14:3
Nov 28 13:50:26.792 INFO [stderr]    |
Nov 28 13:50:26.792 INFO [stderr] 14 |   kind: IpAddrKind,
Nov 28 13:50:26.792 INFO [stderr]    |   ^^^^^^^^^^^^^^^^
Nov 28 13:50:26.792 INFO [stderr]    |
Nov 28 13:50:26.792 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 13:50:26.792 INFO [stderr] 
Nov 28 13:50:26.792 INFO [stderr] warning: field is never used: `address`
Nov 28 13:50:26.792 INFO [stderr]   --> src/enum.rs:15:3
Nov 28 13:50:26.793 INFO [stderr]    |
Nov 28 13:50:26.793 INFO [stderr] 15 |   address: String
Nov 28 13:50:26.793 INFO [stderr]    |   ^^^^^^^^^^^^^^^
Nov 28 13:50:26.793 INFO [stderr] 
Nov 28 13:50:27.188 INFO [stderr] warning: unused variable: `six`
Nov 28 13:50:27.188 INFO [stderr]   --> src/enum.rs:20:7
Nov 28 13:50:27.188 INFO [stderr]    |
Nov 28 13:50:27.188 INFO [stderr] 20 |   let six = IpAddrKind::V6;
Nov 28 13:50:27.188 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Nov 28 13:50:27.188 INFO [stderr]    |
Nov 28 13:50:27.189 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:27.189 INFO [stderr] 
Nov 28 13:50:27.189 INFO [stderr] warning: unused variable: `home`
Nov 28 13:50:27.189 INFO [stderr]   --> src/enum.rs:27:7
Nov 28 13:50:27.189 INFO [stderr]    |
Nov 28 13:50:27.189 INFO [stderr] 27 |   let home = IpAddr {
Nov 28 13:50:27.189 INFO [stderr]    |       ^^^^ help: consider using `_home` instead
Nov 28 13:50:27.189 INFO [stderr] 
Nov 28 13:50:27.189 INFO [stderr] warning: unused variable: `op_type`
Nov 28 13:50:27.189 INFO [stderr]   --> src/enum.rs:35:10
Nov 28 13:50:27.189 INFO [stderr]    |
Nov 28 13:50:27.189 INFO [stderr] 35 | fn route(op_type: IpAddrKind) { }
Nov 28 13:50:27.189 INFO [stderr]    |          ^^^^^^^ help: consider using `_op_type` instead
Nov 28 13:50:27.189 INFO [stderr] 
Nov 28 13:50:27.220 INFO [stderr] warning: field is never used: `kind`
Nov 28 13:50:27.220 INFO [stderr]   --> src/enum.rs:14:3
Nov 28 13:50:27.220 INFO [stderr]    |
Nov 28 13:50:27.220 INFO [stderr] 14 |   kind: IpAddrKind,
Nov 28 13:50:27.220 INFO [stderr]    |   ^^^^^^^^^^^^^^^^
Nov 28 13:50:27.220 INFO [stderr]    |
Nov 28 13:50:27.220 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 13:50:27.232 INFO [stderr] 
Nov 28 13:50:27.232 INFO [stderr] warning: field is never used: `address`
Nov 28 13:50:27.233 INFO [stderr]   --> src/enum.rs:15:3
Nov 28 13:50:27.233 INFO [stderr]    |
Nov 28 13:50:27.233 INFO [stderr] 15 |   address: String
Nov 28 13:50:27.233 INFO [stderr]    |   ^^^^^^^^^^^^^^^
Nov 28 13:50:27.233 INFO [stderr] 
Nov 28 13:50:27.616 INFO [stderr] warning: variable `count` is assigned to, but never used
Nov 28 13:50:27.616 INFO [stderr]   --> src/iflet.rs:20:11
Nov 28 13:50:27.616 INFO [stderr]    |
Nov 28 13:50:27.616 INFO [stderr] 20 |   let mut count = 0;
Nov 28 13:50:27.616 INFO [stderr]    |           ^^^^^
Nov 28 13:50:27.636 INFO [stderr]    |
Nov 28 13:50:27.636 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:27.636 INFO [stderr]    = note: consider using `_count` instead
Nov 28 13:50:27.636 INFO [stderr] 
Nov 28 13:50:27.636 INFO [stderr] warning: value assigned to `count` is never read
Nov 28 13:50:27.636 INFO [stderr]   --> src/iflet.rs:25:5
Nov 28 13:50:27.636 INFO [stderr]    |
Nov 28 13:50:27.636 INFO [stderr] 25 |     count += 1;
Nov 28 13:50:27.636 INFO [stderr]    |     ^^^^^
Nov 28 13:50:27.636 INFO [stderr]    |
Nov 28 13:50:27.636 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 28 13:50:27.636 INFO [stderr] 
Nov 28 13:50:27.636 INFO [stderr] warning: variant is never constructed: `Penny`
Nov 28 13:50:27.636 INFO [stderr]  --> src/iflet.rs:2:3
Nov 28 13:50:27.636 INFO [stderr]   |
Nov 28 13:50:27.636 INFO [stderr] 2 |   Penny,
Nov 28 13:50:27.636 INFO [stderr]   |   ^^^^^
Nov 28 13:50:27.652 INFO [stderr]   |
Nov 28 13:50:27.652 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 13:50:27.652 INFO [stderr] 
Nov 28 13:50:27.652 INFO [stderr] warning: variant is never constructed: `Nickel`
Nov 28 13:50:27.653 INFO [stderr]  --> src/iflet.rs:3:3
Nov 28 13:50:27.653 INFO [stderr]   |
Nov 28 13:50:27.653 INFO [stderr] 3 |   Nickel,
Nov 28 13:50:27.653 INFO [stderr]   |   ^^^^^^
Nov 28 13:50:27.653 INFO [stderr] 
Nov 28 13:50:27.653 INFO [stderr] warning: variant is never constructed: `Dime`
Nov 28 13:50:27.653 INFO [stderr]  --> src/iflet.rs:4:3
Nov 28 13:50:27.653 INFO [stderr]   |
Nov 28 13:50:27.653 INFO [stderr] 4 |   Dime,
Nov 28 13:50:27.653 INFO [stderr]   |   ^^^^
Nov 28 13:50:27.653 INFO [stderr] 
Nov 28 13:50:27.653 INFO [stderr] warning: variant is never constructed: `Alabama`
Nov 28 13:50:27.653 INFO [stderr]   --> src/iflet.rs:10:3
Nov 28 13:50:27.653 INFO [stderr]    |
Nov 28 13:50:27.653 INFO [stderr] 10 |   Alabama,
Nov 28 13:50:27.653 INFO [stderr]    |   ^^^^^^^
Nov 28 13:50:27.653 INFO [stderr] 
Nov 28 13:50:27.745 INFO [stderr] warning: unused variable: `user2`
Nov 28 13:50:27.746 INFO [stderr]   --> src/struct.rs:14:7
Nov 28 13:50:27.746 INFO [stderr]    |
Nov 28 13:50:27.746 INFO [stderr] 14 |   let user2 = User {
Nov 28 13:50:27.746 INFO [stderr]    |       ^^^^^ help: consider using `_user2` instead
Nov 28 13:50:27.746 INFO [stderr]    |
Nov 28 13:50:27.746 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:27.746 INFO [stderr] 
Nov 28 13:50:27.746 INFO [stderr] warning: unused variable: `black`
Nov 28 13:50:27.746 INFO [stderr]   --> src/struct.rs:20:7
Nov 28 13:50:27.746 INFO [stderr]    |
Nov 28 13:50:27.746 INFO [stderr] 20 |   let black = Color(0, 0, 0);
Nov 28 13:50:27.746 INFO [stderr]    |       ^^^^^ help: consider using `_black` instead
Nov 28 13:50:27.746 INFO [stderr] 
Nov 28 13:50:27.752 INFO [stderr] warning: field is never used: `username`
Nov 28 13:50:27.752 INFO [stderr]  --> src/struct.rs:2:3
Nov 28 13:50:27.752 INFO [stderr]   |
Nov 28 13:50:27.752 INFO [stderr] 2 |   username: String,
Nov 28 13:50:27.752 INFO [stderr]   |   ^^^^^^^^^^^^^^^^
Nov 28 13:50:27.764 INFO [stderr]   |
Nov 28 13:50:27.764 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 13:50:27.764 INFO [stderr] 
Nov 28 13:50:27.764 INFO [stderr] warning: field is never used: `email`
Nov 28 13:50:27.764 INFO [stderr]  --> src/struct.rs:3:3
Nov 28 13:50:27.764 INFO [stderr]   |
Nov 28 13:50:27.764 INFO [stderr] 3 |   email: String,
Nov 28 13:50:27.764 INFO [stderr]   |   ^^^^^^^^^^^^^
Nov 28 13:50:27.764 INFO [stderr] 
Nov 28 13:50:27.764 INFO [stderr] warning: field is never used: `sign_in_count`
Nov 28 13:50:27.764 INFO [stderr]  --> src/struct.rs:4:3
Nov 28 13:50:27.764 INFO [stderr]   |
Nov 28 13:50:27.764 INFO [stderr] 4 |   sign_in_count: u64,
Nov 28 13:50:27.764 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^
Nov 28 13:50:27.764 INFO [stderr] 
Nov 28 13:50:27.764 INFO [stderr] warning: field is never used: `active`
Nov 28 13:50:27.764 INFO [stderr]  --> src/struct.rs:5:3
Nov 28 13:50:27.764 INFO [stderr]   |
Nov 28 13:50:27.764 INFO [stderr] 5 |   active: bool
Nov 28 13:50:27.765 INFO [stderr]   |   ^^^^^^^^^^^^
Nov 28 13:50:27.765 INFO [stderr] 
Nov 28 13:50:28.169 INFO [stderr] warning: variable does not need to be mutable
Nov 28 13:50:28.169 INFO [stderr]  --> src/slice.rs:2:7
Nov 28 13:50:28.169 INFO [stderr]   |
Nov 28 13:50:28.169 INFO [stderr] 2 |   let mut s = String::from("hello world");
Nov 28 13:50:28.169 INFO [stderr]   |       ----^
Nov 28 13:50:28.169 INFO [stderr]   |       |
Nov 28 13:50:28.169 INFO [stderr]   |       help: remove this `mut`
Nov 28 13:50:28.169 INFO [stderr]   |
Nov 28 13:50:28.169 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Nov 28 13:50:28.169 INFO [stderr] 
Nov 28 13:50:28.572 INFO [stderr] warning: doc comment not used by rustdoc
Nov 28 13:50:28.572 INFO [stderr]   --> src/struct_ex.rs:17:3
Nov 28 13:50:28.572 INFO [stderr]    |
Nov 28 13:50:28.572 INFO [stderr] 17 |   ///
Nov 28 13:50:28.572 INFO [stderr]    |   ^^^
Nov 28 13:50:28.572 INFO [stderr]    |
Nov 28 13:50:28.572 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Nov 28 13:50:28.572 INFO [stderr] 
Nov 28 13:50:30.415 INFO [stderr] warning: unused variable: `post`
Nov 28 13:50:30.415 INFO [stderr]   --> src/blog.rs:30:25
Nov 28 13:50:30.415 INFO [stderr]    |
Nov 28 13:50:30.415 INFO [stderr] 30 |   fn content<'a>(&self, post: &'a Post) -> &'a str {
Nov 28 13:50:30.415 INFO [stderr]    |                         ^^^^ help: consider using `_post` instead
Nov 28 13:50:30.424 INFO [stderr]    |
Nov 28 13:50:30.424 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:30.424 INFO [stderr] 
Nov 28 13:50:31.096 INFO [stderr] warning: unused variable: `s6`
Nov 28 13:50:31.096 INFO [stderr]   --> src/owner.rs:19:7
Nov 28 13:50:31.096 INFO [stderr]    |
Nov 28 13:50:31.096 INFO [stderr] 19 |   let s6 = s5;
Nov 28 13:50:31.097 INFO [stderr]    |       ^^ help: consider using `_s6` instead
Nov 28 13:50:31.108 INFO [stderr]    |
Nov 28 13:50:31.108 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:31.108 INFO [stderr] 
Nov 28 13:50:31.122 INFO [stderr] warning: function is never used: `gives_ownership`
Nov 28 13:50:31.122 INFO [stderr]   --> src/owner.rs:37:1
Nov 28 13:50:31.122 INFO [stderr]    |
Nov 28 13:50:31.122 INFO [stderr] 37 | fn gives_ownership() -> String {
Nov 28 13:50:31.122 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:50:31.122 INFO [stderr]    |
Nov 28 13:50:31.122 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 13:50:31.122 INFO [stderr] 
Nov 28 13:50:31.324 INFO [stderr] warning: unused import: `std::time::Duration`
Nov 28 13:50:31.325 INFO [stderr]  --> src/multiple_thread.rs:2:5
Nov 28 13:50:31.325 INFO [stderr]   |
Nov 28 13:50:31.325 INFO [stderr] 2 | use std::time::Duration;
Nov 28 13:50:31.326 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Nov 28 13:50:31.353 INFO [stderr]   |
Nov 28 13:50:31.353 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 13:50:31.353 INFO [stderr] 
Nov 28 13:50:32.215 INFO [stderr] warning: unused variable: `integer`
Nov 28 13:50:32.215 INFO [stderr]   --> src/generics.rs:14:7
Nov 28 13:50:32.216 INFO [stderr]    |
Nov 28 13:50:32.216 INFO [stderr] 14 |   let integer = Point {
Nov 28 13:50:32.216 INFO [stderr]    |       ^^^^^^^ help: consider using `_integer` instead
Nov 28 13:50:32.217 INFO [stderr]    |
Nov 28 13:50:32.218 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:32.218 INFO [stderr] 
Nov 28 13:50:32.243 INFO [stderr] warning: field is never used: `y`
Nov 28 13:50:32.244 INFO [stderr]  --> src/generics.rs:3:3
Nov 28 13:50:32.244 INFO [stderr]   |
Nov 28 13:50:32.245 INFO [stderr] 3 |   y: T
Nov 28 13:50:32.245 INFO [stderr]   |   ^^^^
Nov 28 13:50:32.245 INFO [stderr]   |
Nov 28 13:50:32.245 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 13:50:32.246 INFO [stderr] 
Nov 28 13:50:34.564 INFO [stderr] warning: unused variable: `six`
Nov 28 13:50:34.564 INFO [stderr]   --> src/match.rs:25:7
Nov 28 13:50:34.564 INFO [stderr]    |
Nov 28 13:50:34.564 INFO [stderr] 25 |   let six = plus_one(five);
Nov 28 13:50:34.564 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Nov 28 13:50:34.572 INFO [stderr]    |
Nov 28 13:50:34.572 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:34.572 INFO [stderr] 
Nov 28 13:50:34.572 INFO [stderr] warning: unused variable: `none`
Nov 28 13:50:34.573 INFO [stderr]   --> src/match.rs:26:7
Nov 28 13:50:34.573 INFO [stderr]    |
Nov 28 13:50:34.573 INFO [stderr] 26 |   let none = plus_one(None);
Nov 28 13:50:34.573 INFO [stderr]    |       ^^^^ help: consider using `_none` instead
Nov 28 13:50:34.573 INFO [stderr] 
Nov 28 13:50:34.577 INFO [stderr] warning: variant is never constructed: `Penny`
Nov 28 13:50:34.577 INFO [stderr]  --> src/match.rs:2:3
Nov 28 13:50:34.580 INFO [stderr]   |
Nov 28 13:50:34.580 INFO [stderr] 2 |   Penny,
Nov 28 13:50:34.580 INFO [stderr]   |   ^^^^^
Nov 28 13:50:34.616 INFO [stderr]   |
Nov 28 13:50:34.616 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 13:50:34.616 INFO [stderr] 
Nov 28 13:50:34.617 INFO [stderr] warning: variant is never constructed: `Nickel`
Nov 28 13:50:34.617 INFO [stderr]  --> src/match.rs:3:3
Nov 28 13:50:34.617 INFO [stderr]   |
Nov 28 13:50:34.617 INFO [stderr] 3 |   Nickel,
Nov 28 13:50:34.617 INFO [stderr]   |   ^^^^^^
Nov 28 13:50:34.617 INFO [stderr] 
Nov 28 13:50:34.617 INFO [stderr] warning: variant is never constructed: `Dime`
Nov 28 13:50:34.617 INFO [stderr]  --> src/match.rs:4:3
Nov 28 13:50:34.617 INFO [stderr]   |
Nov 28 13:50:34.617 INFO [stderr] 4 |   Dime,
Nov 28 13:50:34.617 INFO [stderr]   |   ^^^^
Nov 28 13:50:34.617 INFO [stderr] 
Nov 28 13:50:34.617 INFO [stderr] warning: variant is never constructed: `Alabama`
Nov 28 13:50:34.617 INFO [stderr]   --> src/match.rs:10:3
Nov 28 13:50:34.617 INFO [stderr]    |
Nov 28 13:50:34.617 INFO [stderr] 10 |   Alabama,
Nov 28 13:50:34.617 INFO [stderr]    |   ^^^^^^^
Nov 28 13:50:34.624 INFO [stderr] 
Nov 28 13:50:36.521 INFO [stderr] error[E0601]: `main` function not found in crate `refcall`
Nov 28 13:50:36.529 INFO [stderr]   |
Nov 28 13:50:36.529 INFO [stderr]   = note: consider adding a `main` function to `src/refcall.rs`
Nov 28 13:50:36.530 INFO [stderr] 
Nov 28 13:50:36.615 INFO [stderr] error: aborting due to previous error
Nov 28 13:50:36.652 INFO [stderr] 
Nov 28 13:50:36.664 INFO [stderr] For more information about this error, try `rustc --explain E0601`.
Nov 28 13:50:36.725 INFO [stderr] error: Could not compile `rust_learning`.
Nov 28 13:50:36.725 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Nov 28 13:50:36.782 INFO [stderr] warning: unused variable: `post`
Nov 28 13:50:36.782 INFO [stderr]   --> src/blog.rs:30:25
Nov 28 13:50:36.783 INFO [stderr]    |
Nov 28 13:50:36.783 INFO [stderr] 30 |   fn content<'a>(&self, post: &'a Post) -> &'a str {
Nov 28 13:50:36.783 INFO [stderr]    |                         ^^^^ help: consider using `_post` instead
Nov 28 13:50:36.788 INFO [stderr]    |
Nov 28 13:50:36.789 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:50:36.789 INFO [stderr] 
Nov 28 13:50:37.788 INFO [stderr] warning: unused import: `std::rc::Rc`
Nov 28 13:50:37.789 INFO [stderr]  --> src/shared_mem.rs:1:5
Nov 28 13:50:37.789 INFO [stderr]   |
Nov 28 13:50:37.789 INFO [stderr] 1 | use std::rc::Rc;
Nov 28 13:50:37.790 INFO [stderr]   |     ^^^^^^^^^^^
Nov 28 13:50:37.790 INFO [stderr]   |
Nov 28 13:50:37.790 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 13:50:37.791 INFO [stderr] 
Nov 28 13:50:38.100 INFO [stderr] warning: variable does not need to be mutable
Nov 28 13:50:38.100 INFO [stderr]  --> src/slice.rs:2:7
Nov 28 13:50:38.100 INFO [stderr]   |
Nov 28 13:50:38.100 INFO [stderr] 2 |   let mut s = String::from("hello world");
Nov 28 13:50:38.100 INFO [stderr]   |       ----^
Nov 28 13:50:38.100 INFO [stderr]   |       |
Nov 28 13:50:38.100 INFO [stderr]   |       help: remove this `mut`
Nov 28 13:50:38.100 INFO [stderr]   |
Nov 28 13:50:38.100 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Nov 28 13:50:38.100 INFO [stderr] 
Nov 28 13:50:38.417 INFO [stderr] error: build failed
Nov 28 13:50:38.417 INFO [stderr] su: No module specific data is present
Nov 28 13:50:38.933 INFO running `"docker" "inspect" "a9b6ca35bbacc6926bbad867f4a377d02bc59c7317869307d970a99b951ab3bd"`
Nov 28 13:50:39.068 INFO running `"docker" "rm" "-f" "a9b6ca35bbacc6926bbad867f4a377d02bc59c7317869307d970a99b951ab3bd"`
Nov 28 13:50:39.212 INFO [stdout] a9b6ca35bbacc6926bbad867f4a377d02bc59c7317869307d970a99b951ab3bd