Dec 18 07:52:31.296 INFO checking EdenCao/rust_learning against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 07:52:31.296 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/EdenCao/rust_learning:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 07:52:31.676 INFO [stdout] b130a7db9b252e5eb77f084676b5f907fdb3ff8889e191e768f25e4dbd254099
Dec 18 07:52:31.684 INFO running `"docker" "start" "-a" "b130a7db9b252e5eb77f084676b5f907fdb3ff8889e191e768f25e4dbd254099"`
Dec 18 07:52:33.063 INFO [stderr]     Checking rust_learning v0.1.0 (/opt/crater/workdir)
Dec 18 07:52:33.636 INFO [stderr] warning: unused variable: `s6`
Dec 18 07:52:33.636 INFO [stderr]   --> src/owner.rs:19:7
Dec 18 07:52:33.636 INFO [stderr]    |
Dec 18 07:52:33.636 INFO [stderr] 19 |   let s6 = s5;
Dec 18 07:52:33.636 INFO [stderr]    |       ^^ help: consider using `_s6` instead
Dec 18 07:52:33.656 INFO [stderr] warning: doc comment not used by rustdoc
Dec 18 07:52:33.656 INFO [stderr]   --> src/struct_ex.rs:17:3
Dec 18 07:52:33.656 INFO [stderr]    |
Dec 18 07:52:33.656 INFO [stderr] 17 |   ///
Dec 18 07:52:33.656 INFO [stderr]    |   ^^^
Dec 18 07:52:33.656 INFO [stderr]    |
Dec 18 07:52:33.656 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:52:33.656 INFO [stderr] 
Dec 18 07:52:33.672 INFO [stderr] warning: function is never used: `gives_ownership`
Dec 18 07:52:33.672 INFO [stderr]   --> src/owner.rs:37:1
Dec 18 07:52:33.672 INFO [stderr]    |
Dec 18 07:52:33.672 INFO [stderr] 37 | fn gives_ownership() -> String {
Dec 18 07:52:33.672 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:52:33.672 INFO [stderr]    |
Dec 18 07:52:33.672 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 18 07:52:33.672 INFO [stderr] 
Dec 18 07:52:33.680 INFO [stderr]    |
Dec 18 07:52:33.680 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 07:52:33.680 INFO [stderr] 
Dec 18 07:52:33.983 INFO [stderr] warning: field is never used: `query`
Dec 18 07:52:33.983 INFO [stderr]   --> src/read.rs:27:5
Dec 18 07:52:33.983 INFO [stderr]    |
Dec 18 07:52:33.983 INFO [stderr] 27 |     query: String,
Dec 18 07:52:33.983 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 18 07:52:33.990 INFO [stderr]    |
Dec 18 07:52:33.991 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 07:52:33.991 INFO [stderr] 
Dec 18 07:52:33.991 INFO [stderr] warning: function is never used: `search_case_insensitive`
Dec 18 07:52:33.991 INFO [stderr]   --> src/read.rs:82:1
Dec 18 07:52:33.991 INFO [stderr]    |
Dec 18 07:52:33.991 INFO [stderr] 82 | fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
Dec 18 07:52:33.991 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:52:33.991 INFO [stderr] 
Dec 18 07:52:34.048 INFO [stderr] warning: unused variable: `post`
Dec 18 07:52:34.048 INFO [stderr]   --> src/blog.rs:30:25
Dec 18 07:52:34.048 INFO [stderr]    |
Dec 18 07:52:34.048 INFO [stderr] 30 |   fn content<'a>(&self, post: &'a Post) -> &'a str {
Dec 18 07:52:34.048 INFO [stderr]    |                         ^^^^ help: consider using `_post` instead
Dec 18 07:52:34.048 INFO [stderr]    |
Dec 18 07:52:34.048 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:52:34.048 INFO [stderr] 
Dec 18 07:52:34.264 INFO [stderr] warning: unused variable: `six`
Dec 18 07:52:34.264 INFO [stderr]   --> src/enum.rs:20:7
Dec 18 07:52:34.264 INFO [stderr]    |
Dec 18 07:52:34.264 INFO [stderr] 20 |   let six = IpAddrKind::V6;
Dec 18 07:52:34.264 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Dec 18 07:52:34.264 INFO [stderr]    |
Dec 18 07:52:34.264 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:52:34.264 INFO [stderr] 
Dec 18 07:52:34.264 INFO [stderr] warning: unused variable: `home`
Dec 18 07:52:34.264 INFO [stderr]   --> src/enum.rs:27:7
Dec 18 07:52:34.264 INFO [stderr]    |
Dec 18 07:52:34.264 INFO [stderr] 27 |   let home = IpAddr {
Dec 18 07:52:34.264 INFO [stderr]    |       ^^^^ help: consider using `_home` instead
Dec 18 07:52:34.264 INFO [stderr] 
Dec 18 07:52:34.264 INFO [stderr] warning: unused variable: `op_type`
Dec 18 07:52:34.264 INFO [stderr]   --> src/enum.rs:35:10
Dec 18 07:52:34.264 INFO [stderr]    |
Dec 18 07:52:34.264 INFO [stderr] 35 | fn route(op_type: IpAddrKind) { }
Dec 18 07:52:34.264 INFO [stderr]    |          ^^^^^^^ help: consider using `_op_type` instead
Dec 18 07:52:34.264 INFO [stderr] 
Dec 18 07:52:34.284 INFO [stderr] warning: field is never used: `kind`
Dec 18 07:52:34.285 INFO [stderr]   --> src/enum.rs:14:3
Dec 18 07:52:34.285 INFO [stderr]    |
Dec 18 07:52:34.285 INFO [stderr] 14 |   kind: IpAddrKind,
Dec 18 07:52:34.285 INFO [stderr]    |   ^^^^^^^^^^^^^^^^
Dec 18 07:52:34.285 INFO [stderr]    |
Dec 18 07:52:34.285 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 07:52:34.285 INFO [stderr] 
Dec 18 07:52:34.285 INFO [stderr] warning: field is never used: `address`
Dec 18 07:52:34.285 INFO [stderr]   --> src/enum.rs:15:3
Dec 18 07:52:34.285 INFO [stderr]    |
Dec 18 07:52:34.285 INFO [stderr] 15 |   address: String
Dec 18 07:52:34.285 INFO [stderr]    |   ^^^^^^^^^^^^^^^
Dec 18 07:52:34.285 INFO [stderr] 
Dec 18 07:52:34.312 INFO [stderr] warning: variable does not need to be mutable
Dec 18 07:52:34.312 INFO [stderr]  --> src/slice.rs:2:7
Dec 18 07:52:34.312 INFO [stderr]   |
Dec 18 07:52:34.312 INFO [stderr] 2 |   let mut s = String::from("hello world");
Dec 18 07:52:34.312 INFO [stderr]   |       ----^
Dec 18 07:52:34.312 INFO [stderr]   |       |
Dec 18 07:52:34.312 INFO [stderr]   |       help: remove this `mut`
Dec 18 07:52:34.312 INFO [stderr]   |
Dec 18 07:52:34.312 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 18 07:52:34.312 INFO [stderr] 
Dec 18 07:52:35.442 INFO [stderr] warning: unused variable: `six`
Dec 18 07:52:35.442 INFO [stderr]   --> src/enum.rs:20:7
Dec 18 07:52:35.442 INFO [stderr]    |
Dec 18 07:52:35.443 INFO [stderr] 20 |   let six = IpAddrKind::V6;
Dec 18 07:52:35.443 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Dec 18 07:52:35.468 INFO [stderr]    |
Dec 18 07:52:35.468 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:52:35.469 INFO [stderr] 
Dec 18 07:52:35.469 INFO [stderr] warning: unused variable: `home`
Dec 18 07:52:35.469 INFO [stderr]   --> src/enum.rs:27:7
Dec 18 07:52:35.469 INFO [stderr]    |
Dec 18 07:52:35.470 INFO [stderr] 27 |   let home = IpAddr {
Dec 18 07:52:35.470 INFO [stderr]    |       ^^^^ help: consider using `_home` instead
Dec 18 07:52:35.470 INFO [stderr] 
Dec 18 07:52:35.470 INFO [stderr] warning: unused variable: `op_type`
Dec 18 07:52:35.470 INFO [stderr]   --> src/enum.rs:35:10
Dec 18 07:52:35.470 INFO [stderr]    |
Dec 18 07:52:35.470 INFO [stderr] 35 | fn route(op_type: IpAddrKind) { }
Dec 18 07:52:35.470 INFO [stderr]    |          ^^^^^^^ help: consider using `_op_type` instead
Dec 18 07:52:35.470 INFO [stderr] 
Dec 18 07:52:35.475 INFO [stderr] warning: field is never used: `kind`
Dec 18 07:52:35.475 INFO [stderr]   --> src/enum.rs:14:3
Dec 18 07:52:35.475 INFO [stderr]    |
Dec 18 07:52:35.475 INFO [stderr] 14 |   kind: IpAddrKind,
Dec 18 07:52:35.475 INFO [stderr]    |   ^^^^^^^^^^^^^^^^
Dec 18 07:52:35.492 INFO [stderr]    |
Dec 18 07:52:35.493 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 07:52:35.493 INFO [stderr] 
Dec 18 07:52:35.493 INFO [stderr] warning: field is never used: `address`
Dec 18 07:52:35.493 INFO [stderr]   --> src/enum.rs:15:3
Dec 18 07:52:35.493 INFO [stderr]    |
Dec 18 07:52:35.494 INFO [stderr] 15 |   address: String
Dec 18 07:52:35.494 INFO [stderr]    |   ^^^^^^^^^^^^^^^
Dec 18 07:52:35.494 INFO [stderr] 
Dec 18 07:52:36.064 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 18 07:52:36.065 INFO [stderr]  --> src/multiple_thread.rs:2:5
Dec 18 07:52:36.065 INFO [stderr]   |
Dec 18 07:52:36.065 INFO [stderr] 2 | use std::time::Duration;
Dec 18 07:52:36.065 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 18 07:52:36.104 INFO [stderr]   |
Dec 18 07:52:36.105 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 07:52:36.105 INFO [stderr] 
Dec 18 07:52:37.013 INFO [stderr] warning: variable `count` is assigned to, but never used
Dec 18 07:52:37.013 INFO [stderr]   --> src/iflet.rs:20:11
Dec 18 07:52:37.013 INFO [stderr]    |
Dec 18 07:52:37.013 INFO [stderr] 20 |   let mut count = 0;
Dec 18 07:52:37.013 INFO [stderr]    |           ^^^^^
Dec 18 07:52:37.013 INFO [stderr]    |
Dec 18 07:52:37.013 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:52:37.016 INFO [stderr]    = note: consider using `_count` instead
Dec 18 07:52:37.016 INFO [stderr] 
Dec 18 07:52:37.020 INFO [stderr] warning: value assigned to `count` is never read
Dec 18 07:52:37.020 INFO [stderr]   --> src/iflet.rs:25:5
Dec 18 07:52:37.020 INFO [stderr]    |
Dec 18 07:52:37.020 INFO [stderr] 25 |     count += 1;
Dec 18 07:52:37.020 INFO [stderr]    |     ^^^^^
Dec 18 07:52:37.020 INFO [stderr]    |
Dec 18 07:52:37.020 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 07:52:37.020 INFO [stderr] 
Dec 18 07:52:37.020 INFO [stderr] warning: variant is never constructed: `Penny`
Dec 18 07:52:37.020 INFO [stderr]  --> src/iflet.rs:2:3
Dec 18 07:52:37.020 INFO [stderr]   |
Dec 18 07:52:37.020 INFO [stderr] 2 |   Penny,
Dec 18 07:52:37.020 INFO [stderr]   |   ^^^^^
Dec 18 07:52:37.020 INFO [stderr]   |
Dec 18 07:52:37.020 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 07:52:37.020 INFO [stderr] 
Dec 18 07:52:37.024 INFO [stderr] warning: variant is never constructed: `Nickel`
Dec 18 07:52:37.024 INFO [stderr]  --> src/iflet.rs:3:3
Dec 18 07:52:37.024 INFO [stderr]   |
Dec 18 07:52:37.024 INFO [stderr] 3 |   Nickel,
Dec 18 07:52:37.024 INFO [stderr]   |   ^^^^^^
Dec 18 07:52:37.024 INFO [stderr] 
Dec 18 07:52:37.024 INFO [stderr] warning: variant is never constructed: `Dime`
Dec 18 07:52:37.024 INFO [stderr]  --> src/iflet.rs:4:3
Dec 18 07:52:37.024 INFO [stderr]   |
Dec 18 07:52:37.024 INFO [stderr] 4 |   Dime,
Dec 18 07:52:37.024 INFO [stderr]   |   ^^^^
Dec 18 07:52:37.024 INFO [stderr] 
Dec 18 07:52:37.024 INFO [stderr] warning: variant is never constructed: `Alabama`
Dec 18 07:52:37.024 INFO [stderr]   --> src/iflet.rs:10:3
Dec 18 07:52:37.024 INFO [stderr]    |
Dec 18 07:52:37.024 INFO [stderr] 10 |   Alabama,
Dec 18 07:52:37.024 INFO [stderr]    |   ^^^^^^^
Dec 18 07:52:37.024 INFO [stderr] 
Dec 18 07:52:37.080 INFO [stderr] warning: unused variable: `s6`
Dec 18 07:52:37.080 INFO [stderr]   --> src/owner.rs:19:7
Dec 18 07:52:37.080 INFO [stderr]    |
Dec 18 07:52:37.080 INFO [stderr] 19 |   let s6 = s5;
Dec 18 07:52:37.080 INFO [stderr]    |       ^^ help: consider using `_s6` instead
Dec 18 07:52:37.080 INFO [stderr]    |
Dec 18 07:52:37.080 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:52:37.080 INFO [stderr] 
Dec 18 07:52:37.116 INFO [stderr] warning: function is never used: `gives_ownership`
Dec 18 07:52:37.116 INFO [stderr]   --> src/owner.rs:37:1
Dec 18 07:52:37.116 INFO [stderr]    |
Dec 18 07:52:37.116 INFO [stderr] 37 | fn gives_ownership() -> String {
Dec 18 07:52:37.116 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:52:37.116 INFO [stderr]    |
Dec 18 07:52:37.116 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 07:52:37.116 INFO [stderr] 
Dec 18 07:52:37.288 INFO [stderr] warning: unused variable: `integer`
Dec 18 07:52:37.288 INFO [stderr]   --> src/generics.rs:14:7
Dec 18 07:52:37.288 INFO [stderr]    |
Dec 18 07:52:37.288 INFO [stderr] 14 |   let integer = Point {
Dec 18 07:52:37.288 INFO [stderr]    |       ^^^^^^^ help: consider using `_integer` instead
Dec 18 07:52:37.288 INFO [stderr]    |
Dec 18 07:52:37.288 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:52:37.288 INFO [stderr] 
Dec 18 07:52:37.320 INFO [stderr] warning: field is never used: `y`
Dec 18 07:52:37.320 INFO [stderr]  --> src/generics.rs:3:3
Dec 18 07:52:37.320 INFO [stderr]   |
Dec 18 07:52:37.328 INFO [stderr] 3 |   y: T
Dec 18 07:52:37.328 INFO [stderr]   |   ^^^^
Dec 18 07:52:37.328 INFO [stderr]   |
Dec 18 07:52:37.328 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 07:52:37.328 INFO [stderr] 
Dec 18 07:52:38.245 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 18 07:52:38.245 INFO [stderr]  --> src/multiple_thread.rs:2:5
Dec 18 07:52:38.245 INFO [stderr]   |
Dec 18 07:52:38.245 INFO [stderr] 2 | use std::time::Duration;
Dec 18 07:52:38.245 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 18 07:52:38.260 INFO [stderr]   |
Dec 18 07:52:38.260 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 07:52:38.260 INFO [stderr] 
Dec 18 07:52:38.280 INFO [stderr] warning: variable does not need to be mutable
Dec 18 07:52:38.280 INFO [stderr]  --> src/slice.rs:2:7
Dec 18 07:52:38.281 INFO [stderr]   |
Dec 18 07:52:38.281 INFO [stderr] 2 |   let mut s = String::from("hello world");
Dec 18 07:52:38.281 INFO [stderr]   |       ----^
Dec 18 07:52:38.281 INFO [stderr]   |       |
Dec 18 07:52:38.281 INFO [stderr]   |       help: remove this `mut`
Dec 18 07:52:38.289 INFO [stderr]   |
Dec 18 07:52:38.289 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 18 07:52:38.289 INFO [stderr] 
Dec 18 07:52:38.304 INFO [stderr] warning: field is never used: `query`
Dec 18 07:52:38.304 INFO [stderr]   --> src/read.rs:27:5
Dec 18 07:52:38.305 INFO [stderr]    |
Dec 18 07:52:38.305 INFO [stderr] 27 |     query: String,
Dec 18 07:52:38.305 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 18 07:52:38.307 INFO [stderr]    |
Dec 18 07:52:38.308 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 07:52:38.308 INFO [stderr] 
Dec 18 07:52:38.560 INFO [stderr] warning: unused variable: `integer`
Dec 18 07:52:38.560 INFO [stderr]   --> src/generics.rs:14:7
Dec 18 07:52:38.560 INFO [stderr]    |
Dec 18 07:52:38.560 INFO [stderr] 14 |   let integer = Point {
Dec 18 07:52:38.560 INFO [stderr]    |       ^^^^^^^ help: consider using `_integer` instead
Dec 18 07:52:38.560 INFO [stderr]    |
Dec 18 07:52:38.560 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:52:38.560 INFO [stderr] 
Dec 18 07:52:38.577 INFO [stderr] warning: field is never used: `y`
Dec 18 07:52:38.577 INFO [stderr]  --> src/generics.rs:3:3
Dec 18 07:52:38.577 INFO [stderr]   |
Dec 18 07:52:38.577 INFO [stderr] 3 |   y: T
Dec 18 07:52:38.577 INFO [stderr]   |   ^^^^
Dec 18 07:52:38.592 INFO [stderr]   |
Dec 18 07:52:38.592 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 07:52:38.592 INFO [stderr] 
Dec 18 07:52:38.840 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 18 07:52:38.840 INFO [stderr]  --> src/shared_mem.rs:1:5
Dec 18 07:52:38.840 INFO [stderr]   |
Dec 18 07:52:38.840 INFO [stderr] 1 | use std::rc::Rc;
Dec 18 07:52:38.840 INFO [stderr]   |     ^^^^^^^^^^^
Dec 18 07:52:38.840 INFO [stderr]   |
Dec 18 07:52:38.840 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 07:52:38.840 INFO [stderr] 
Dec 18 07:52:39.016 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 18 07:52:39.016 INFO [stderr]  --> src/shared_mem.rs:1:5
Dec 18 07:52:39.016 INFO [stderr]   |
Dec 18 07:52:39.016 INFO [stderr] 1 | use std::rc::Rc;
Dec 18 07:52:39.016 INFO [stderr]   |     ^^^^^^^^^^^
Dec 18 07:52:39.029 INFO [stderr]   |
Dec 18 07:52:39.029 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 07:52:39.029 INFO [stderr] 
Dec 18 07:52:39.147 INFO [stderr] error[E0601]: `main` function not found in crate `refcall`
Dec 18 07:52:39.147 INFO [stderr]   |
Dec 18 07:52:39.147 INFO [stderr]   = note: consider adding a `main` function to `src/refcall.rs`
Dec 18 07:52:39.147 INFO [stderr] 
Dec 18 07:52:39.160 INFO [stderr] error: aborting due to previous error
Dec 18 07:52:39.188 INFO [stderr] 
Dec 18 07:52:39.188 INFO [stderr] For more information about this error, try `rustc --explain E0601`.
Dec 18 07:52:39.217 INFO [stderr] error: Could not compile `rust_learning`.
Dec 18 07:52:39.217 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 18 07:52:39.484 INFO [stderr] warning: unused variable: `six`
Dec 18 07:52:39.484 INFO [stderr]   --> src/match.rs:25:7
Dec 18 07:52:39.484 INFO [stderr]    |
Dec 18 07:52:39.484 INFO [stderr] 25 |   let six = plus_one(five);
Dec 18 07:52:39.484 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Dec 18 07:52:39.484 INFO [stderr]    |
Dec 18 07:52:39.484 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:52:39.484 INFO [stderr] 
Dec 18 07:52:39.484 INFO [stderr] warning: unused variable: `none`
Dec 18 07:52:39.484 INFO [stderr]   --> src/match.rs:26:7
Dec 18 07:52:39.484 INFO [stderr]    |
Dec 18 07:52:39.484 INFO [stderr] 26 |   let none = plus_one(None);
Dec 18 07:52:39.484 INFO [stderr]    |       ^^^^ help: consider using `_none` instead
Dec 18 07:52:39.484 INFO [stderr] 
Dec 18 07:52:39.486 INFO [stderr] warning: variant is never constructed: `Penny`
Dec 18 07:52:39.486 INFO [stderr]  --> src/match.rs:2:3
Dec 18 07:52:39.486 INFO [stderr]   |
Dec 18 07:52:39.486 INFO [stderr] 2 |   Penny,
Dec 18 07:52:39.486 INFO [stderr]   |   ^^^^^
Dec 18 07:52:39.486 INFO [stderr]   |
Dec 18 07:52:39.486 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 07:52:39.486 INFO [stderr] 
Dec 18 07:52:39.486 INFO [stderr] warning: variant is never constructed: `Nickel`
Dec 18 07:52:39.486 INFO [stderr]  --> src/match.rs:3:3
Dec 18 07:52:39.486 INFO [stderr]   |
Dec 18 07:52:39.486 INFO [stderr] 3 |   Nickel,
Dec 18 07:52:39.486 INFO [stderr]   |   ^^^^^^
Dec 18 07:52:39.486 INFO [stderr] 
Dec 18 07:52:39.486 INFO [stderr] warning: variant is never constructed: `Dime`
Dec 18 07:52:39.486 INFO [stderr]  --> src/match.rs:4:3
Dec 18 07:52:39.486 INFO [stderr]   |
Dec 18 07:52:39.486 INFO [stderr] 4 |   Dime,
Dec 18 07:52:39.486 INFO [stderr]   |   ^^^^
Dec 18 07:52:39.486 INFO [stderr] 
Dec 18 07:52:39.486 INFO [stderr] warning: variant is never constructed: `Alabama`
Dec 18 07:52:39.486 INFO [stderr]   --> src/match.rs:10:3
Dec 18 07:52:39.486 INFO [stderr]    |
Dec 18 07:52:39.486 INFO [stderr] 10 |   Alabama,
Dec 18 07:52:39.486 INFO [stderr]    |   ^^^^^^^
Dec 18 07:52:39.486 INFO [stderr] 
Dec 18 07:52:39.508 INFO [stderr] error: build failed
Dec 18 07:52:39.937 INFO running `"docker" "inspect" "b130a7db9b252e5eb77f084676b5f907fdb3ff8889e191e768f25e4dbd254099"`
Dec 18 07:52:40.070 INFO running `"docker" "rm" "-f" "b130a7db9b252e5eb77f084676b5f907fdb3ff8889e191e768f25e4dbd254099"`
Dec 18 07:52:40.231 INFO [stdout] b130a7db9b252e5eb77f084676b5f907fdb3ff8889e191e768f25e4dbd254099