Dec 06 14:22:33.732 INFO testing EdenCao/rust_learning against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 14:22:33.732 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt build --frozen" "-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"`
Dec 06 14:22:33.878 INFO [stdout] e83d1684e3f9d7f7007083831d6657cc7ab3d1d7816e011183a5d56d4756f87c
Dec 06 14:22:33.882 INFO running `"docker" "start" "-a" "e83d1684e3f9d7f7007083831d6657cc7ab3d1d7816e011183a5d56d4756f87c"`
Dec 06 14:22:34.224 INFO [stderr] usermod: no changes
Dec 06 14:22:34.291 INFO [stderr]    Compiling rust_learning v0.1.0 (/source)
Dec 06 14:22:34.810 INFO [stderr] warning: unused variable: `user2`
Dec 06 14:22:34.810 INFO [stderr]   --> src/struct.rs:14:7
Dec 06 14:22:34.810 INFO [stderr]    |
Dec 06 14:22:34.810 INFO [stderr] 14 |   let user2 = User {
Dec 06 14:22:34.810 INFO [stderr]    |       ^^^^^ help: consider using `_user2` instead
Dec 06 14:22:34.810 INFO [stderr]    |
Dec 06 14:22:34.810 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 06 14:22:34.810 INFO [stderr] 
Dec 06 14:22:34.810 INFO [stderr] warning: unused variable: `black`
Dec 06 14:22:34.810 INFO [stderr]   --> src/struct.rs:20:7
Dec 06 14:22:34.810 INFO [stderr]    |
Dec 06 14:22:34.810 INFO [stderr] 20 |   let black = Color(0, 0, 0);
Dec 06 14:22:34.810 INFO [stderr]    |       ^^^^^ help: consider using `_black` instead
Dec 06 14:22:34.810 INFO [stderr] 
Dec 06 14:22:34.810 INFO [stderr] warning: field is never used: `username`
Dec 06 14:22:34.810 INFO [stderr]  --> src/struct.rs:2:3
Dec 06 14:22:34.810 INFO [stderr]   |
Dec 06 14:22:34.810 INFO [stderr] 2 |   username: String,
Dec 06 14:22:34.810 INFO [stderr]   |   ^^^^^^^^^^^^^^^^
Dec 06 14:22:34.810 INFO [stderr]   |
Dec 06 14:22:34.810 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 06 14:22:34.810 INFO [stderr] 
Dec 06 14:22:34.810 INFO [stderr] warning: field is never used: `email`
Dec 06 14:22:34.810 INFO [stderr]  --> src/struct.rs:3:3
Dec 06 14:22:34.810 INFO [stderr]   |
Dec 06 14:22:34.810 INFO [stderr] 3 |   email: String,
Dec 06 14:22:34.810 INFO [stderr]   |   ^^^^^^^^^^^^^
Dec 06 14:22:34.810 INFO [stderr] 
Dec 06 14:22:34.810 INFO [stderr] warning: field is never used: `sign_in_count`
Dec 06 14:22:34.810 INFO [stderr]  --> src/struct.rs:4:3
Dec 06 14:22:34.810 INFO [stderr]   |
Dec 06 14:22:34.810 INFO [stderr] 4 |   sign_in_count: u64,
Dec 06 14:22:34.810 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^
Dec 06 14:22:34.810 INFO [stderr] 
Dec 06 14:22:34.810 INFO [stderr] warning: field is never used: `active`
Dec 06 14:22:34.810 INFO [stderr]  --> src/struct.rs:5:3
Dec 06 14:22:34.810 INFO [stderr]   |
Dec 06 14:22:34.810 INFO [stderr] 5 |   active: bool
Dec 06 14:22:34.810 INFO [stderr]   |   ^^^^^^^^^^^^
Dec 06 14:22:34.810 INFO [stderr] 
Dec 06 14:22:34.894 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 06 14:22:34.895 INFO [stderr]  --> src/multiple_thread.rs:2:5
Dec 06 14:22:34.895 INFO [stderr]   |
Dec 06 14:22:34.895 INFO [stderr] 2 | use std::time::Duration;
Dec 06 14:22:34.895 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:34.895 INFO [stderr]   |
Dec 06 14:22:34.895 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 14:22:34.895 INFO [stderr] 
Dec 06 14:22:35.073 INFO [stderr] warning: variable `count` is assigned to, but never used
Dec 06 14:22:35.073 INFO [stderr]   --> src/iflet.rs:20:11
Dec 06 14:22:35.073 INFO [stderr]    |
Dec 06 14:22:35.073 INFO [stderr] 20 |   let mut count = 0;
Dec 06 14:22:35.073 INFO [stderr]    |           ^^^^^
Dec 06 14:22:35.073 INFO [stderr]    |
Dec 06 14:22:35.073 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 06 14:22:35.073 INFO [stderr]    = note: consider using `_count` instead
Dec 06 14:22:35.073 INFO [stderr] 
Dec 06 14:22:35.073 INFO [stderr] warning: value assigned to `count` is never read
Dec 06 14:22:35.073 INFO [stderr]   --> src/iflet.rs:25:5
Dec 06 14:22:35.073 INFO [stderr]    |
Dec 06 14:22:35.073 INFO [stderr] 25 |     count += 1;
Dec 06 14:22:35.073 INFO [stderr]    |     ^^^^^
Dec 06 14:22:35.073 INFO [stderr]    |
Dec 06 14:22:35.073 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 06 14:22:35.073 INFO [stderr] 
Dec 06 14:22:35.078 INFO [stderr] warning: variant is never constructed: `Penny`
Dec 06 14:22:35.078 INFO [stderr]  --> src/iflet.rs:2:3
Dec 06 14:22:35.078 INFO [stderr]   |
Dec 06 14:22:35.078 INFO [stderr] 2 |   Penny,
Dec 06 14:22:35.078 INFO [stderr]   |   ^^^^^
Dec 06 14:22:35.078 INFO [stderr]   |
Dec 06 14:22:35.078 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 06 14:22:35.078 INFO [stderr] 
Dec 06 14:22:35.078 INFO [stderr] warning: variant is never constructed: `Nickel`
Dec 06 14:22:35.078 INFO [stderr]  --> src/iflet.rs:3:3
Dec 06 14:22:35.078 INFO [stderr]   |
Dec 06 14:22:35.078 INFO [stderr] 3 |   Nickel,
Dec 06 14:22:35.078 INFO [stderr]   |   ^^^^^^
Dec 06 14:22:35.078 INFO [stderr] 
Dec 06 14:22:35.078 INFO [stderr] warning: variant is never constructed: `Dime`
Dec 06 14:22:35.078 INFO [stderr]  --> src/iflet.rs:4:3
Dec 06 14:22:35.078 INFO [stderr]   |
Dec 06 14:22:35.078 INFO [stderr] 4 |   Dime,
Dec 06 14:22:35.079 INFO [stderr]   |   ^^^^
Dec 06 14:22:35.079 INFO [stderr] 
Dec 06 14:22:35.079 INFO [stderr] warning: variant is never constructed: `Alabama`
Dec 06 14:22:35.079 INFO [stderr]   --> src/iflet.rs:10:3
Dec 06 14:22:35.079 INFO [stderr]    |
Dec 06 14:22:35.079 INFO [stderr] 10 |   Alabama,
Dec 06 14:22:35.079 INFO [stderr]    |   ^^^^^^^
Dec 06 14:22:35.079 INFO [stderr] 
Dec 06 14:22:35.308 INFO [stderr] warning: field is never used: `query`
Dec 06 14:22:35.308 INFO [stderr]   --> src/read.rs:27:5
Dec 06 14:22:35.308 INFO [stderr]    |
Dec 06 14:22:35.308 INFO [stderr] 27 |     query: String,
Dec 06 14:22:35.308 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 06 14:22:35.316 INFO [stderr]    |
Dec 06 14:22:35.316 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 06 14:22:35.316 INFO [stderr] 
Dec 06 14:22:35.316 INFO [stderr] warning: function is never used: `search_case_insensitive`
Dec 06 14:22:35.316 INFO [stderr]   --> src/read.rs:82:1
Dec 06 14:22:35.316 INFO [stderr]    |
Dec 06 14:22:35.316 INFO [stderr] 82 | fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
Dec 06 14:22:35.316 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:35.316 INFO [stderr] 
Dec 06 14:22:35.352 INFO [stderr] warning: unused variable: `s6`
Dec 06 14:22:35.352 INFO [stderr]   --> src/owner.rs:19:7
Dec 06 14:22:35.352 INFO [stderr]    |
Dec 06 14:22:35.352 INFO [stderr] 19 |   let s6 = s5;
Dec 06 14:22:35.352 INFO [stderr]    |       ^^ help: consider using `_s6` instead
Dec 06 14:22:35.352 INFO [stderr]    |
Dec 06 14:22:35.352 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 06 14:22:35.352 INFO [stderr] 
Dec 06 14:22:35.358 INFO [stderr] warning: function is never used: `gives_ownership`
Dec 06 14:22:35.358 INFO [stderr]   --> src/owner.rs:37:1
Dec 06 14:22:35.358 INFO [stderr]    |
Dec 06 14:22:35.358 INFO [stderr] 37 | fn gives_ownership() -> String {
Dec 06 14:22:35.358 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:35.358 INFO [stderr]    |
Dec 06 14:22:35.358 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 06 14:22:35.358 INFO [stderr] 
Dec 06 14:22:36.556 INFO [stderr] error[E0601]: `main` function not found in crate `refcall`
Dec 06 14:22:36.556 INFO [stderr]   |
Dec 06 14:22:36.556 INFO [stderr]   = note: consider adding a `main` function to `src/refcall.rs`
Dec 06 14:22:36.556 INFO [stderr] 
Dec 06 14:22:36.587 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 06 14:22:36.587 INFO [stderr]  --> src/shared_mem.rs:1:5
Dec 06 14:22:36.587 INFO [stderr]   |
Dec 06 14:22:36.587 INFO [stderr] 1 | use std::rc::Rc;
Dec 06 14:22:36.587 INFO [stderr]   |     ^^^^^^^^^^^
Dec 06 14:22:36.587 INFO [stderr]   |
Dec 06 14:22:36.587 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 14:22:36.587 INFO [stderr] 
Dec 06 14:22:36.597 INFO [stderr] error: aborting due to previous error
Dec 06 14:22:36.597 INFO [stderr] 
Dec 06 14:22:36.597 INFO [stderr] For more information about this error, try `rustc --explain E0601`.
Dec 06 14:22:36.603 INFO [stderr] error: Could not compile `rust_learning`.
Dec 06 14:22:36.603 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 06 14:22:37.077 INFO [stderr] warning: unused variable: `six`
Dec 06 14:22:37.077 INFO [stderr]   --> src/enum.rs:20:7
Dec 06 14:22:37.078 INFO [stderr]    |
Dec 06 14:22:37.078 INFO [stderr] 20 |   let six = IpAddrKind::V6;
Dec 06 14:22:37.078 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Dec 06 14:22:37.086 INFO [stderr]    |
Dec 06 14:22:37.091 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 06 14:22:37.092 INFO [stderr] 
Dec 06 14:22:37.092 INFO [stderr] warning: unused variable: `home`
Dec 06 14:22:37.092 INFO [stderr]   --> src/enum.rs:27:7
Dec 06 14:22:37.092 INFO [stderr]    |
Dec 06 14:22:37.092 INFO [stderr] 27 |   let home = IpAddr {
Dec 06 14:22:37.093 INFO [stderr]    |       ^^^^ help: consider using `_home` instead
Dec 06 14:22:37.093 INFO [stderr] 
Dec 06 14:22:37.093 INFO [stderr] warning: unused variable: `op_type`
Dec 06 14:22:37.093 INFO [stderr]   --> src/enum.rs:35:10
Dec 06 14:22:37.094 INFO [stderr]    |
Dec 06 14:22:37.094 INFO [stderr] 35 | fn route(op_type: IpAddrKind) { }
Dec 06 14:22:37.094 INFO [stderr]    |          ^^^^^^^ help: consider using `_op_type` instead
Dec 06 14:22:37.094 INFO [stderr] 
Dec 06 14:22:37.099 INFO [stderr] warning: field is never used: `kind`
Dec 06 14:22:37.099 INFO [stderr]   --> src/enum.rs:14:3
Dec 06 14:22:37.100 INFO [stderr]    |
Dec 06 14:22:37.100 INFO [stderr] 14 |   kind: IpAddrKind,
Dec 06 14:22:37.100 INFO [stderr]    |   ^^^^^^^^^^^^^^^^
Dec 06 14:22:37.101 INFO [stderr]    |
Dec 06 14:22:37.101 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 06 14:22:37.101 INFO [stderr] 
Dec 06 14:22:37.101 INFO [stderr] warning: field is never used: `address`
Dec 06 14:22:37.102 INFO [stderr]   --> src/enum.rs:15:3
Dec 06 14:22:37.102 INFO [stderr]    |
Dec 06 14:22:37.102 INFO [stderr] 15 |   address: String
Dec 06 14:22:37.102 INFO [stderr]    |   ^^^^^^^^^^^^^^^
Dec 06 14:22:37.103 INFO [stderr] 
Dec 06 14:22:37.316 INFO [stderr] warning: unused variable: `integer`
Dec 06 14:22:37.316 INFO [stderr]   --> src/generics.rs:14:7
Dec 06 14:22:37.316 INFO [stderr]    |
Dec 06 14:22:37.316 INFO [stderr] 14 |   let integer = Point {
Dec 06 14:22:37.316 INFO [stderr]    |       ^^^^^^^ help: consider using `_integer` instead
Dec 06 14:22:37.340 INFO [stderr]    |
Dec 06 14:22:37.341 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 06 14:22:37.341 INFO [stderr] 
Dec 06 14:22:37.347 INFO [stderr] warning: field is never used: `y`
Dec 06 14:22:37.347 INFO [stderr]  --> src/generics.rs:3:3
Dec 06 14:22:37.347 INFO [stderr]   |
Dec 06 14:22:37.348 INFO [stderr] 3 |   y: T
Dec 06 14:22:37.348 INFO [stderr]   |   ^^^^
Dec 06 14:22:37.348 INFO [stderr]   |
Dec 06 14:22:37.348 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 06 14:22:37.348 INFO [stderr] 
Dec 06 14:22:37.690 INFO [stderr] warning: unused variable: `six`
Dec 06 14:22:37.691 INFO [stderr]   --> src/match.rs:25:7
Dec 06 14:22:37.691 INFO [stderr]    |
Dec 06 14:22:37.692 INFO [stderr] 25 |   let six = plus_one(five);
Dec 06 14:22:37.692 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Dec 06 14:22:37.712 INFO [stderr]    |
Dec 06 14:22:37.712 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 06 14:22:37.713 INFO [stderr] 
Dec 06 14:22:37.713 INFO [stderr] warning: unused variable: `none`
Dec 06 14:22:37.713 INFO [stderr]   --> src/match.rs:26:7
Dec 06 14:22:37.714 INFO [stderr]    |
Dec 06 14:22:37.714 INFO [stderr] 26 |   let none = plus_one(None);
Dec 06 14:22:37.714 INFO [stderr]    |       ^^^^ help: consider using `_none` instead
Dec 06 14:22:37.714 INFO [stderr] 
Dec 06 14:22:37.719 INFO [stderr] warning: variant is never constructed: `Penny`
Dec 06 14:22:37.720 INFO [stderr]  --> src/match.rs:2:3
Dec 06 14:22:37.720 INFO [stderr]   |
Dec 06 14:22:37.720 INFO [stderr] 2 |   Penny,
Dec 06 14:22:37.721 INFO [stderr]   |   ^^^^^
Dec 06 14:22:37.736 INFO [stderr]   |
Dec 06 14:22:37.736 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 06 14:22:37.737 INFO [stderr] 
Dec 06 14:22:37.737 INFO [stderr] warning: variant is never constructed: `Nickel`
Dec 06 14:22:37.737 INFO [stderr]  --> src/match.rs:3:3
Dec 06 14:22:37.738 INFO [stderr]   |
Dec 06 14:22:37.738 INFO [stderr] 3 |   Nickel,
Dec 06 14:22:37.738 INFO [stderr]   |   ^^^^^^
Dec 06 14:22:37.738 INFO [stderr] 
Dec 06 14:22:37.739 INFO [stderr] warning: variant is never constructed: `Dime`
Dec 06 14:22:37.739 INFO [stderr]  --> src/match.rs:4:3
Dec 06 14:22:37.739 INFO [stderr]   |
Dec 06 14:22:37.740 INFO [stderr] 4 |   Dime,
Dec 06 14:22:37.740 INFO [stderr]   |   ^^^^
Dec 06 14:22:37.740 INFO [stderr] 
Dec 06 14:22:37.740 INFO [stderr] warning: variant is never constructed: `Alabama`
Dec 06 14:22:37.741 INFO [stderr]   --> src/match.rs:10:3
Dec 06 14:22:37.741 INFO [stderr]    |
Dec 06 14:22:37.741 INFO [stderr] 10 |   Alabama,
Dec 06 14:22:37.742 INFO [stderr]    |   ^^^^^^^
Dec 06 14:22:37.742 INFO [stderr] 
Dec 06 14:22:37.978 INFO [stderr] error: build failed
Dec 06 14:22:37.980 INFO [stderr] su: No module specific data is present
Dec 06 14:22:38.387 INFO running `"docker" "inspect" "e83d1684e3f9d7f7007083831d6657cc7ab3d1d7816e011183a5d56d4756f87c"`
Dec 06 14:22:38.481 INFO running `"docker" "rm" "-f" "e83d1684e3f9d7f7007083831d6657cc7ab3d1d7816e011183a5d56d4756f87c"`
Dec 06 14:22:38.563 INFO [stdout] e83d1684e3f9d7f7007083831d6657cc7ab3d1d7816e011183a5d56d4756f87c