Nov 30 11:19:32.086 INFO checking EdenCao/rust_learning against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 11:19:32.086 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-0/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 30 11:19:33.402 INFO [stdout] 4569b15b357e2182ad6640582e35763101e3841dc034a60c55d32c1183b366ac
Nov 30 11:19:33.402 INFO running `"docker" "start" "-a" "4569b15b357e2182ad6640582e35763101e3841dc034a60c55d32c1183b366ac"`
Nov 30 11:19:35.293 INFO [stderr] usermod: no changes
Nov 30 11:19:35.894 INFO [stderr]     Checking rust_learning v0.1.0 (/source)
Nov 30 11:19:36.533 INFO [stderr] warning: unused variable: `post`
Nov 30 11:19:36.533 INFO [stderr]   --> src/blog.rs:30:25
Nov 30 11:19:36.534 INFO [stderr]    |
Nov 30 11:19:36.534 INFO [stderr] 30 |   fn content<'a>(&self, post: &'a Post) -> &'a str {
Nov 30 11:19:36.534 INFO [stderr]    |                         ^^^^ help: consider using `_post` instead
Nov 30 11:19:36.536 INFO [stderr]    |
Nov 30 11:19:36.537 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:36.537 INFO [stderr] 
Nov 30 11:19:37.421 INFO [stderr] warning: unused variable: `six`
Nov 30 11:19:37.421 INFO [stderr]   --> src/match.rs:25:7
Nov 30 11:19:37.422 INFO [stderr]    |
Nov 30 11:19:37.422 INFO [stderr] 25 |   let six = plus_one(five);
Nov 30 11:19:37.422 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Nov 30 11:19:37.448 INFO [stderr]    |
Nov 30 11:19:37.449 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:37.449 INFO [stderr] 
Nov 30 11:19:37.449 INFO [stderr] warning: unused variable: `none`
Nov 30 11:19:37.450 INFO [stderr]   --> src/match.rs:26:7
Nov 30 11:19:37.450 INFO [stderr]    |
Nov 30 11:19:37.451 INFO [stderr] 26 |   let none = plus_one(None);
Nov 30 11:19:37.451 INFO [stderr]    |       ^^^^ help: consider using `_none` instead
Nov 30 11:19:37.451 INFO [stderr] 
Nov 30 11:19:37.453 INFO [stderr] warning: variant is never constructed: `Penny`
Nov 30 11:19:37.453 INFO [stderr]  --> src/match.rs:2:3
Nov 30 11:19:37.454 INFO [stderr]   |
Nov 30 11:19:37.454 INFO [stderr] 2 |   Penny,
Nov 30 11:19:37.454 INFO [stderr]   |   ^^^^^
Nov 30 11:19:37.477 INFO [stderr]   |
Nov 30 11:19:37.477 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 11:19:37.477 INFO [stderr] 
Nov 30 11:19:37.477 INFO [stderr] warning: variant is never constructed: `Nickel`
Nov 30 11:19:37.477 INFO [stderr]  --> src/match.rs:3:3
Nov 30 11:19:37.477 INFO [stderr]   |
Nov 30 11:19:37.477 INFO [stderr] 3 |   Nickel,
Nov 30 11:19:37.477 INFO [stderr]   |   ^^^^^^
Nov 30 11:19:37.477 INFO [stderr] 
Nov 30 11:19:37.477 INFO [stderr] warning: variant is never constructed: `Dime`
Nov 30 11:19:37.477 INFO [stderr]  --> src/match.rs:4:3
Nov 30 11:19:37.477 INFO [stderr]   |
Nov 30 11:19:37.477 INFO [stderr] 4 |   Dime,
Nov 30 11:19:37.477 INFO [stderr]   |   ^^^^
Nov 30 11:19:37.477 INFO [stderr] 
Nov 30 11:19:37.477 INFO [stderr] warning: variant is never constructed: `Alabama`
Nov 30 11:19:37.477 INFO [stderr]   --> src/match.rs:10:3
Nov 30 11:19:37.477 INFO [stderr]    |
Nov 30 11:19:37.477 INFO [stderr] 10 |   Alabama,
Nov 30 11:19:37.477 INFO [stderr]    |   ^^^^^^^
Nov 30 11:19:37.477 INFO [stderr] 
Nov 30 11:19:37.587 INFO [stderr] warning: field is never used: `query`
Nov 30 11:19:37.587 INFO [stderr]   --> src/read.rs:27:5
Nov 30 11:19:37.587 INFO [stderr]    |
Nov 30 11:19:37.587 INFO [stderr] 27 |     query: String,
Nov 30 11:19:37.587 INFO [stderr]    |     ^^^^^^^^^^^^^
Nov 30 11:19:37.587 INFO [stderr]    |
Nov 30 11:19:37.587 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 11:19:37.587 INFO [stderr] 
Nov 30 11:19:37.587 INFO [stderr] warning: function is never used: `search_case_insensitive`
Nov 30 11:19:37.587 INFO [stderr]   --> src/read.rs:82:1
Nov 30 11:19:37.587 INFO [stderr]    |
Nov 30 11:19:37.587 INFO [stderr] 82 | fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
Nov 30 11:19:37.587 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 11:19:37.587 INFO [stderr] 
Nov 30 11:19:38.041 INFO [stderr] warning: unused variable: `six`
Nov 30 11:19:38.042 INFO [stderr]   --> src/enum.rs:20:7
Nov 30 11:19:38.042 INFO [stderr]    |
Nov 30 11:19:38.042 INFO [stderr] 20 |   let six = IpAddrKind::V6;
Nov 30 11:19:38.042 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Nov 30 11:19:38.043 INFO [stderr]    |
Nov 30 11:19:38.043 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:38.043 INFO [stderr] 
Nov 30 11:19:38.043 INFO [stderr] warning: unused variable: `home`
Nov 30 11:19:38.043 INFO [stderr]   --> src/enum.rs:27:7
Nov 30 11:19:38.043 INFO [stderr]    |
Nov 30 11:19:38.044 INFO [stderr] 27 |   let home = IpAddr {
Nov 30 11:19:38.044 INFO [stderr]    |       ^^^^ help: consider using `_home` instead
Nov 30 11:19:38.044 INFO [stderr] 
Nov 30 11:19:38.044 INFO [stderr] warning: unused variable: `op_type`
Nov 30 11:19:38.044 INFO [stderr]   --> src/enum.rs:35:10
Nov 30 11:19:38.045 INFO [stderr]    |
Nov 30 11:19:38.045 INFO [stderr] 35 | fn route(op_type: IpAddrKind) { }
Nov 30 11:19:38.045 INFO [stderr]    |          ^^^^^^^ help: consider using `_op_type` instead
Nov 30 11:19:38.045 INFO [stderr] 
Nov 30 11:19:38.050 INFO [stderr] warning: field is never used: `kind`
Nov 30 11:19:38.050 INFO [stderr]   --> src/enum.rs:14:3
Nov 30 11:19:38.050 INFO [stderr]    |
Nov 30 11:19:38.050 INFO [stderr] 14 |   kind: IpAddrKind,
Nov 30 11:19:38.051 INFO [stderr]    |   ^^^^^^^^^^^^^^^^
Nov 30 11:19:38.051 INFO [stderr]    |
Nov 30 11:19:38.051 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 11:19:38.051 INFO [stderr] 
Nov 30 11:19:38.051 INFO [stderr] warning: field is never used: `address`
Nov 30 11:19:38.051 INFO [stderr]   --> src/enum.rs:15:3
Nov 30 11:19:38.051 INFO [stderr]    |
Nov 30 11:19:38.052 INFO [stderr] 15 |   address: String
Nov 30 11:19:38.052 INFO [stderr]    |   ^^^^^^^^^^^^^^^
Nov 30 11:19:38.052 INFO [stderr] 
Nov 30 11:19:38.816 INFO [stderr] warning: variable `count` is assigned to, but never used
Nov 30 11:19:38.817 INFO [stderr]   --> src/iflet.rs:20:11
Nov 30 11:19:38.817 INFO [stderr]    |
Nov 30 11:19:38.817 INFO [stderr] 20 |   let mut count = 0;
Nov 30 11:19:38.817 INFO [stderr]    |           ^^^^^
Nov 30 11:19:38.832 INFO [stderr]    |
Nov 30 11:19:38.833 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:38.833 INFO [stderr]    = note: consider using `_count` instead
Nov 30 11:19:38.833 INFO [stderr] 
Nov 30 11:19:38.834 INFO [stderr] warning: value assigned to `count` is never read
Nov 30 11:19:38.834 INFO [stderr]   --> src/iflet.rs:25:5
Nov 30 11:19:38.834 INFO [stderr]    |
Nov 30 11:19:38.835 INFO [stderr] 25 |     count += 1;
Nov 30 11:19:38.835 INFO [stderr]    |     ^^^^^
Nov 30 11:19:38.835 INFO [stderr]    |
Nov 30 11:19:38.836 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 30 11:19:38.836 INFO [stderr] 
Nov 30 11:19:38.840 INFO [stderr] warning: variant is never constructed: `Penny`
Nov 30 11:19:38.840 INFO [stderr]  --> src/iflet.rs:2:3
Nov 30 11:19:38.840 INFO [stderr]   |
Nov 30 11:19:38.841 INFO [stderr] 2 |   Penny,
Nov 30 11:19:38.841 INFO [stderr]   |   ^^^^^
Nov 30 11:19:38.860 INFO [stderr]   |
Nov 30 11:19:38.861 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 11:19:38.861 INFO [stderr] 
Nov 30 11:19:38.862 INFO [stderr] warning: variant is never constructed: `Nickel`
Nov 30 11:19:38.862 INFO [stderr]  --> src/iflet.rs:3:3
Nov 30 11:19:38.862 INFO [stderr]   |
Nov 30 11:19:38.862 INFO [stderr] 3 |   Nickel,
Nov 30 11:19:38.863 INFO [stderr]   |   ^^^^^^
Nov 30 11:19:38.863 INFO [stderr] 
Nov 30 11:19:38.863 INFO [stderr] warning: variant is never constructed: `Dime`
Nov 30 11:19:38.864 INFO [stderr]  --> src/iflet.rs:4:3
Nov 30 11:19:38.864 INFO [stderr]   |
Nov 30 11:19:38.864 INFO [stderr] 4 |   Dime,
Nov 30 11:19:38.865 INFO [stderr]   |   ^^^^
Nov 30 11:19:38.865 INFO [stderr] 
Nov 30 11:19:38.865 INFO [stderr] warning: variant is never constructed: `Alabama`
Nov 30 11:19:38.866 INFO [stderr]   --> src/iflet.rs:10:3
Nov 30 11:19:38.866 INFO [stderr]    |
Nov 30 11:19:38.866 INFO [stderr] 10 |   Alabama,
Nov 30 11:19:38.866 INFO [stderr]    |   ^^^^^^^
Nov 30 11:19:38.867 INFO [stderr] 
Nov 30 11:19:38.882 INFO [stderr] warning: unused variable: `six`
Nov 30 11:19:38.882 INFO [stderr]   --> src/enum.rs:20:7
Nov 30 11:19:38.882 INFO [stderr]    |
Nov 30 11:19:38.882 INFO [stderr] 20 |   let six = IpAddrKind::V6;
Nov 30 11:19:38.882 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Nov 30 11:19:38.882 INFO [stderr]    |
Nov 30 11:19:38.882 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:38.882 INFO [stderr] 
Nov 30 11:19:38.882 INFO [stderr] warning: unused variable: `home`
Nov 30 11:19:38.883 INFO [stderr]   --> src/enum.rs:27:7
Nov 30 11:19:38.883 INFO [stderr]    |
Nov 30 11:19:38.883 INFO [stderr] 27 |   let home = IpAddr {
Nov 30 11:19:38.883 INFO [stderr]    |       ^^^^ help: consider using `_home` instead
Nov 30 11:19:38.883 INFO [stderr] 
Nov 30 11:19:38.883 INFO [stderr] warning: unused variable: `op_type`
Nov 30 11:19:38.883 INFO [stderr]   --> src/enum.rs:35:10
Nov 30 11:19:38.883 INFO [stderr]    |
Nov 30 11:19:38.883 INFO [stderr] 35 | fn route(op_type: IpAddrKind) { }
Nov 30 11:19:38.883 INFO [stderr]    |          ^^^^^^^ help: consider using `_op_type` instead
Nov 30 11:19:38.883 INFO [stderr] 
Nov 30 11:19:38.895 INFO [stderr] warning: field is never used: `kind`
Nov 30 11:19:38.895 INFO [stderr]   --> src/enum.rs:14:3
Nov 30 11:19:38.895 INFO [stderr]    |
Nov 30 11:19:38.895 INFO [stderr] 14 |   kind: IpAddrKind,
Nov 30 11:19:38.895 INFO [stderr]    |   ^^^^^^^^^^^^^^^^
Nov 30 11:19:38.895 INFO [stderr]    |
Nov 30 11:19:38.895 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 11:19:38.895 INFO [stderr] 
Nov 30 11:19:38.895 INFO [stderr] warning: field is never used: `address`
Nov 30 11:19:38.895 INFO [stderr]   --> src/enum.rs:15:3
Nov 30 11:19:38.895 INFO [stderr]    |
Nov 30 11:19:38.895 INFO [stderr] 15 |   address: String
Nov 30 11:19:38.895 INFO [stderr]    |   ^^^^^^^^^^^^^^^
Nov 30 11:19:38.895 INFO [stderr] 
Nov 30 11:19:39.181 INFO [stderr] warning: unused import: `std::time::Duration`
Nov 30 11:19:39.181 INFO [stderr]  --> src/multiple_thread.rs:2:5
Nov 30 11:19:39.181 INFO [stderr]   |
Nov 30 11:19:39.181 INFO [stderr] 2 | use std::time::Duration;
Nov 30 11:19:39.181 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Nov 30 11:19:39.181 INFO [stderr]   |
Nov 30 11:19:39.181 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 11:19:39.181 INFO [stderr] 
Nov 30 11:19:40.381 INFO [stderr] warning: unused import: `std::rc::Rc`
Nov 30 11:19:40.381 INFO [stderr]  --> src/shared_mem.rs:1:5
Nov 30 11:19:40.381 INFO [stderr]   |
Nov 30 11:19:40.381 INFO [stderr] 1 | use std::rc::Rc;
Nov 30 11:19:40.381 INFO [stderr]   |     ^^^^^^^^^^^
Nov 30 11:19:40.381 INFO [stderr]   |
Nov 30 11:19:40.381 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 11:19:40.381 INFO [stderr] 
Nov 30 11:19:41.263 INFO [stderr] warning: unused variable: `six`
Nov 30 11:19:41.263 INFO [stderr]   --> src/match.rs:25:7
Nov 30 11:19:41.263 INFO [stderr]    |
Nov 30 11:19:41.263 INFO [stderr] 25 |   let six = plus_one(five);
Nov 30 11:19:41.263 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Nov 30 11:19:41.284 INFO [stderr]    |
Nov 30 11:19:41.284 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:41.284 INFO [stderr] 
Nov 30 11:19:41.284 INFO [stderr] warning: unused variable: `none`
Nov 30 11:19:41.288 INFO [stderr]   --> src/match.rs:26:7
Nov 30 11:19:41.288 INFO [stderr]    |
Nov 30 11:19:41.288 INFO [stderr] 26 |   let none = plus_one(None);
Nov 30 11:19:41.288 INFO [stderr]    |       ^^^^ help: consider using `_none` instead
Nov 30 11:19:41.288 INFO [stderr] 
Nov 30 11:19:41.310 INFO [stderr] warning: variant is never constructed: `Penny`
Nov 30 11:19:41.312 INFO [stderr]  --> src/match.rs:2:3
Nov 30 11:19:41.312 INFO [stderr]   |
Nov 30 11:19:41.312 INFO [stderr] 2 |   Penny,
Nov 30 11:19:41.312 INFO [stderr]   |   ^^^^^
Nov 30 11:19:41.313 INFO [stderr]   |
Nov 30 11:19:41.313 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 11:19:41.313 INFO [stderr] 
Nov 30 11:19:41.314 INFO [stderr] warning: variant is never constructed: `Nickel`
Nov 30 11:19:41.314 INFO [stderr]  --> src/match.rs:3:3
Nov 30 11:19:41.314 INFO [stderr]   |
Nov 30 11:19:41.314 INFO [stderr] 3 |   Nickel,
Nov 30 11:19:41.314 INFO [stderr]   |   ^^^^^^
Nov 30 11:19:41.314 INFO [stderr] 
Nov 30 11:19:41.315 INFO [stderr] warning: variant is never constructed: `Dime`
Nov 30 11:19:41.315 INFO [stderr]  --> src/match.rs:4:3
Nov 30 11:19:41.315 INFO [stderr]   |
Nov 30 11:19:41.315 INFO [stderr] 4 |   Dime,
Nov 30 11:19:41.315 INFO [stderr]   |   ^^^^
Nov 30 11:19:41.315 INFO [stderr] 
Nov 30 11:19:41.315 INFO [stderr] warning: variant is never constructed: `Alabama`
Nov 30 11:19:41.315 INFO [stderr]   --> src/match.rs:10:3
Nov 30 11:19:41.315 INFO [stderr]    |
Nov 30 11:19:41.315 INFO [stderr] 10 |   Alabama,
Nov 30 11:19:41.315 INFO [stderr]    |   ^^^^^^^
Nov 30 11:19:41.316 INFO [stderr] 
Nov 30 11:19:41.598 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:19:41.598 INFO [stderr]  --> src/slice.rs:2:7
Nov 30 11:19:41.598 INFO [stderr]   |
Nov 30 11:19:41.598 INFO [stderr] 2 |   let mut s = String::from("hello world");
Nov 30 11:19:41.598 INFO [stderr]   |       ----^
Nov 30 11:19:41.598 INFO [stderr]   |       |
Nov 30 11:19:41.598 INFO [stderr]   |       help: remove this `mut`
Nov 30 11:19:41.611 INFO [stderr] warning: unused variable: `user2`
Nov 30 11:19:41.611 INFO [stderr]   --> src/struct.rs:14:7
Nov 30 11:19:41.611 INFO [stderr]    |
Nov 30 11:19:41.611 INFO [stderr] 14 |   let user2 = User {
Nov 30 11:19:41.611 INFO [stderr]    |       ^^^^^ help: consider using `_user2` instead
Nov 30 11:19:41.620 INFO [stderr]   |
Nov 30 11:19:41.620 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Nov 30 11:19:41.620 INFO [stderr] 
Nov 30 11:19:41.640 INFO [stderr]    |
Nov 30 11:19:41.640 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:41.640 INFO [stderr] 
Nov 30 11:19:41.640 INFO [stderr] warning: unused variable: `black`
Nov 30 11:19:41.640 INFO [stderr]   --> src/struct.rs:20:7
Nov 30 11:19:41.640 INFO [stderr]    |
Nov 30 11:19:41.640 INFO [stderr] 20 |   let black = Color(0, 0, 0);
Nov 30 11:19:41.640 INFO [stderr]    |       ^^^^^ help: consider using `_black` instead
Nov 30 11:19:41.640 INFO [stderr] 
Nov 30 11:19:41.642 INFO [stderr] warning: field is never used: `username`
Nov 30 11:19:41.642 INFO [stderr]  --> src/struct.rs:2:3
Nov 30 11:19:41.642 INFO [stderr]   |
Nov 30 11:19:41.642 INFO [stderr] 2 |   username: String,
Nov 30 11:19:41.642 INFO [stderr]   |   ^^^^^^^^^^^^^^^^
Nov 30 11:19:41.643 INFO [stderr]   |
Nov 30 11:19:41.643 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 11:19:41.643 INFO [stderr] 
Nov 30 11:19:41.643 INFO [stderr] warning: field is never used: `email`
Nov 30 11:19:41.643 INFO [stderr]  --> src/struct.rs:3:3
Nov 30 11:19:41.643 INFO [stderr]   |
Nov 30 11:19:41.643 INFO [stderr] 3 |   email: String,
Nov 30 11:19:41.643 INFO [stderr]   |   ^^^^^^^^^^^^^
Nov 30 11:19:41.643 INFO [stderr] 
Nov 30 11:19:41.643 INFO [stderr] warning: field is never used: `sign_in_count`
Nov 30 11:19:41.643 INFO [stderr]  --> src/struct.rs:4:3
Nov 30 11:19:41.643 INFO [stderr]   |
Nov 30 11:19:41.643 INFO [stderr] 4 |   sign_in_count: u64,
Nov 30 11:19:41.643 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^
Nov 30 11:19:41.643 INFO [stderr] 
Nov 30 11:19:41.643 INFO [stderr] warning: field is never used: `active`
Nov 30 11:19:41.643 INFO [stderr]  --> src/struct.rs:5:3
Nov 30 11:19:41.643 INFO [stderr]   |
Nov 30 11:19:41.643 INFO [stderr] 5 |   active: bool
Nov 30 11:19:41.643 INFO [stderr]   |   ^^^^^^^^^^^^
Nov 30 11:19:41.643 INFO [stderr] 
Nov 30 11:19:42.744 INFO [stderr] warning: unused variable: `user2`
Nov 30 11:19:42.744 INFO [stderr]   --> src/struct.rs:14:7
Nov 30 11:19:42.744 INFO [stderr]    |
Nov 30 11:19:42.744 INFO [stderr] 14 |   let user2 = User {
Nov 30 11:19:42.744 INFO [stderr]    |       ^^^^^ help: consider using `_user2` instead
Nov 30 11:19:42.775 INFO [stderr]    |
Nov 30 11:19:42.775 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:42.775 INFO [stderr] 
Nov 30 11:19:42.775 INFO [stderr] warning: unused variable: `black`
Nov 30 11:19:42.775 INFO [stderr]   --> src/struct.rs:20:7
Nov 30 11:19:42.775 INFO [stderr]    |
Nov 30 11:19:42.775 INFO [stderr] 20 |   let black = Color(0, 0, 0);
Nov 30 11:19:42.775 INFO [stderr]    |       ^^^^^ help: consider using `_black` instead
Nov 30 11:19:42.775 INFO [stderr] 
Nov 30 11:19:42.777 INFO [stderr] warning: field is never used: `username`
Nov 30 11:19:42.777 INFO [stderr]  --> src/struct.rs:2:3
Nov 30 11:19:42.777 INFO [stderr]   |
Nov 30 11:19:42.777 INFO [stderr] 2 |   username: String,
Nov 30 11:19:42.777 INFO [stderr]   |   ^^^^^^^^^^^^^^^^
Nov 30 11:19:42.780 INFO [stderr]   |
Nov 30 11:19:42.787 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 11:19:42.787 INFO [stderr] 
Nov 30 11:19:42.787 INFO [stderr] warning: field is never used: `email`
Nov 30 11:19:42.787 INFO [stderr]  --> src/struct.rs:3:3
Nov 30 11:19:42.788 INFO [stderr]   |
Nov 30 11:19:42.788 INFO [stderr] 3 |   email: String,
Nov 30 11:19:42.788 INFO [stderr]   |   ^^^^^^^^^^^^^
Nov 30 11:19:42.788 INFO [stderr] 
Nov 30 11:19:42.788 INFO [stderr] warning: field is never used: `sign_in_count`
Nov 30 11:19:42.788 INFO [stderr]  --> src/struct.rs:4:3
Nov 30 11:19:42.788 INFO [stderr]   |
Nov 30 11:19:42.788 INFO [stderr] 4 |   sign_in_count: u64,
Nov 30 11:19:42.788 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^
Nov 30 11:19:42.788 INFO [stderr] 
Nov 30 11:19:42.788 INFO [stderr] warning: field is never used: `active`
Nov 30 11:19:42.788 INFO [stderr]  --> src/struct.rs:5:3
Nov 30 11:19:42.788 INFO [stderr]   |
Nov 30 11:19:42.788 INFO [stderr] 5 |   active: bool
Nov 30 11:19:42.788 INFO [stderr]   |   ^^^^^^^^^^^^
Nov 30 11:19:42.788 INFO [stderr] 
Nov 30 11:19:42.824 INFO [stderr] warning: unused variable: `post`
Nov 30 11:19:42.824 INFO [stderr]   --> src/blog.rs:30:25
Nov 30 11:19:42.824 INFO [stderr]    |
Nov 30 11:19:42.824 INFO [stderr] 30 |   fn content<'a>(&self, post: &'a Post) -> &'a str {
Nov 30 11:19:42.824 INFO [stderr]    |                         ^^^^ help: consider using `_post` instead
Nov 30 11:19:42.824 INFO [stderr]    |
Nov 30 11:19:42.824 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:42.824 INFO [stderr] 
Nov 30 11:19:43.068 INFO [stderr] warning: unused variable: `s6`
Nov 30 11:19:43.068 INFO [stderr]   --> src/owner.rs:19:7
Nov 30 11:19:43.068 INFO [stderr]    |
Nov 30 11:19:43.069 INFO [stderr] 19 |   let s6 = s5;
Nov 30 11:19:43.069 INFO [stderr]    |       ^^ help: consider using `_s6` instead
Nov 30 11:19:43.069 INFO [stderr]    |
Nov 30 11:19:43.069 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:43.069 INFO [stderr] 
Nov 30 11:19:43.081 INFO [stderr] warning: function is never used: `gives_ownership`
Nov 30 11:19:43.081 INFO [stderr]   --> src/owner.rs:37:1
Nov 30 11:19:43.081 INFO [stderr]    |
Nov 30 11:19:43.081 INFO [stderr] 37 | fn gives_ownership() -> String {
Nov 30 11:19:43.081 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 11:19:43.081 INFO [stderr]    |
Nov 30 11:19:43.081 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 11:19:43.082 INFO [stderr] 
Nov 30 11:19:43.366 INFO [stderr] warning: unused import: `std::time::Duration`
Nov 30 11:19:43.366 INFO [stderr]  --> src/multiple_thread.rs:2:5
Nov 30 11:19:43.366 INFO [stderr]   |
Nov 30 11:19:43.366 INFO [stderr] 2 | use std::time::Duration;
Nov 30 11:19:43.366 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Nov 30 11:19:43.366 INFO [stderr]   |
Nov 30 11:19:43.366 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 11:19:43.366 INFO [stderr] 
Nov 30 11:19:43.425 INFO [stderr] warning: doc comment not used by rustdoc
Nov 30 11:19:43.425 INFO [stderr]   --> src/struct_ex.rs:17:3
Nov 30 11:19:43.425 INFO [stderr]    |
Nov 30 11:19:43.425 INFO [stderr] 17 |   ///
Nov 30 11:19:43.425 INFO [stderr]    |   ^^^
Nov 30 11:19:43.425 INFO [stderr]    |
Nov 30 11:19:43.425 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Nov 30 11:19:43.425 INFO [stderr] 
Nov 30 11:19:43.520 INFO [stderr] warning: unused variable: `integer`
Nov 30 11:19:43.520 INFO [stderr]   --> src/generics.rs:14:7
Nov 30 11:19:43.520 INFO [stderr]    |
Nov 30 11:19:43.520 INFO [stderr] 14 |   let integer = Point {
Nov 30 11:19:43.520 INFO [stderr]    |       ^^^^^^^ help: consider using `_integer` instead
Nov 30 11:19:43.520 INFO [stderr]    |
Nov 30 11:19:43.520 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:43.520 INFO [stderr] 
Nov 30 11:19:43.526 INFO [stderr] warning: field is never used: `y`
Nov 30 11:19:43.526 INFO [stderr]  --> src/generics.rs:3:3
Nov 30 11:19:43.526 INFO [stderr]   |
Nov 30 11:19:43.526 INFO [stderr] 3 |   y: T
Nov 30 11:19:43.526 INFO [stderr]   |   ^^^^
Nov 30 11:19:43.527 INFO [stderr]   |
Nov 30 11:19:43.527 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 30 11:19:43.527 INFO [stderr] 
Nov 30 11:19:44.053 INFO [stderr] warning: doc comment not used by rustdoc
Nov 30 11:19:44.053 INFO [stderr]   --> src/struct_ex.rs:17:3
Nov 30 11:19:44.053 INFO [stderr]    |
Nov 30 11:19:44.053 INFO [stderr] 17 |   ///
Nov 30 11:19:44.053 INFO [stderr]    |   ^^^
Nov 30 11:19:44.053 INFO [stderr]    |
Nov 30 11:19:44.053 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Nov 30 11:19:44.053 INFO [stderr] 
Nov 30 11:19:44.710 INFO [stderr] error[E0601]: `main` function not found in crate `refcall`
Nov 30 11:19:44.710 INFO [stderr]   |
Nov 30 11:19:44.710 INFO [stderr]   = note: consider adding a `main` function to `src/refcall.rs`
Nov 30 11:19:44.710 INFO [stderr] 
Nov 30 11:19:44.796 INFO [stderr] error: aborting due to previous error
Nov 30 11:19:44.796 INFO [stderr] 
Nov 30 11:19:44.796 INFO [stderr] For more information about this error, try `rustc --explain E0601`.
Nov 30 11:19:44.828 INFO [stderr] error: Could not compile `rust_learning`.
Nov 30 11:19:44.828 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Nov 30 11:19:44.992 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:19:44.992 INFO [stderr]  --> src/slice.rs:2:7
Nov 30 11:19:44.992 INFO [stderr]   |
Nov 30 11:19:44.992 INFO [stderr] 2 |   let mut s = String::from("hello world");
Nov 30 11:19:44.992 INFO [stderr]   |       ----^
Nov 30 11:19:44.992 INFO [stderr]   |       |
Nov 30 11:19:44.992 INFO [stderr]   |       help: remove this `mut`
Nov 30 11:19:44.992 INFO [stderr]   |
Nov 30 11:19:44.992 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Nov 30 11:19:44.992 INFO [stderr] 
Nov 30 11:19:45.160 INFO [stderr] warning: field is never used: `query`
Nov 30 11:19:45.160 INFO [stderr]   --> src/read.rs:27:5
Nov 30 11:19:45.160 INFO [stderr]    |
Nov 30 11:19:45.160 INFO [stderr] 27 |     query: String,
Nov 30 11:19:45.160 INFO [stderr]    |     ^^^^^^^^^^^^^
Nov 30 11:19:45.160 INFO [stderr]    |
Nov 30 11:19:45.160 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 11:19:45.160 INFO [stderr] 
Nov 30 11:19:45.172 INFO [stderr] warning: unused variable: `s6`
Nov 30 11:19:45.172 INFO [stderr]   --> src/owner.rs:19:7
Nov 30 11:19:45.172 INFO [stderr]    |
Nov 30 11:19:45.172 INFO [stderr] 19 |   let s6 = s5;
Nov 30 11:19:45.172 INFO [stderr]    |       ^^ help: consider using `_s6` instead
Nov 30 11:19:45.172 INFO [stderr]    |
Nov 30 11:19:45.172 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 11:19:45.172 INFO [stderr] 
Nov 30 11:19:45.180 INFO [stderr] warning: function is never used: `gives_ownership`
Nov 30 11:19:45.180 INFO [stderr]   --> src/owner.rs:37:1
Nov 30 11:19:45.180 INFO [stderr]    |
Nov 30 11:19:45.180 INFO [stderr] 37 | fn gives_ownership() -> String {
Nov 30 11:19:45.180 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 11:19:45.180 INFO [stderr]    |
Nov 30 11:19:45.180 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 11:19:45.180 INFO [stderr] 
Nov 30 11:19:45.471 INFO [stderr] warning: unused import: `std::rc::Rc`
Nov 30 11:19:45.471 INFO [stderr]  --> src/shared_mem.rs:1:5
Nov 30 11:19:45.471 INFO [stderr]   |
Nov 30 11:19:45.471 INFO [stderr] 1 | use std::rc::Rc;
Nov 30 11:19:45.471 INFO [stderr]   |     ^^^^^^^^^^^
Nov 30 11:19:45.471 INFO [stderr]   |
Nov 30 11:19:45.471 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 11:19:45.471 INFO [stderr] 
Nov 30 11:19:45.529 INFO [stderr] error: build failed
Nov 30 11:19:45.531 INFO [stderr] su: No module specific data is present
Nov 30 11:19:46.794 INFO running `"docker" "inspect" "4569b15b357e2182ad6640582e35763101e3841dc034a60c55d32c1183b366ac"`
Nov 30 11:19:46.898 INFO running `"docker" "rm" "-f" "4569b15b357e2182ad6640582e35763101e3841dc034a60c55d32c1183b366ac"`
Nov 30 11:19:47.054 INFO [stdout] 4569b15b357e2182ad6640582e35763101e3841dc034a60c55d32c1183b366ac