Dec 14 10:43:54.535 INFO testing EdenCao/rust_learning against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 10:43:54.535 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 10:43:55.040 INFO [stdout] 2b113e4b236cd5877fcbc8bf931f24cd1f117d899bedbd5e3868d24ac76d8369
Dec 14 10:43:55.043 INFO running `"docker" "start" "-a" "2b113e4b236cd5877fcbc8bf931f24cd1f117d899bedbd5e3868d24ac76d8369"`
Dec 14 10:43:56.522 INFO [stderr] usermod: no changes
Dec 14 10:43:56.675 INFO [stderr]    Compiling rust_learning v0.1.0 (/source)
Dec 14 10:43:57.443 INFO [stderr] warning: unused variable: `s6`
Dec 14 10:43:57.443 INFO [stderr]   --> src/owner.rs:19:7
Dec 14 10:43:57.443 INFO [stderr]    |
Dec 14 10:43:57.443 INFO [stderr] 19 |   let s6 = s5;
Dec 14 10:43:57.443 INFO [stderr]    |       ^^ help: consider using `_s6` instead
Dec 14 10:43:57.443 INFO [stderr]    |
Dec 14 10:43:57.443 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 14 10:43:57.443 INFO [stderr] 
Dec 14 10:43:57.455 INFO [stderr] warning: function is never used: `gives_ownership`
Dec 14 10:43:57.455 INFO [stderr]   --> src/owner.rs:37:1
Dec 14 10:43:57.455 INFO [stderr]    |
Dec 14 10:43:57.455 INFO [stderr] 37 | fn gives_ownership() -> String {
Dec 14 10:43:57.455 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:57.455 INFO [stderr]    |
Dec 14 10:43:57.455 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 14 10:43:57.455 INFO [stderr] 
Dec 14 10:43:58.315 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 14 10:43:58.315 INFO [stderr]  --> src/shared_mem.rs:1:5
Dec 14 10:43:58.315 INFO [stderr]   |
Dec 14 10:43:58.315 INFO [stderr] 1 | use std::rc::Rc;
Dec 14 10:43:58.315 INFO [stderr]   |     ^^^^^^^^^^^
Dec 14 10:43:58.315 INFO [stderr]   |
Dec 14 10:43:58.315 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 14 10:43:58.315 INFO [stderr] 
Dec 14 10:43:58.531 INFO [stderr] error[E0601]: `main` function not found in crate `refcall`
Dec 14 10:43:58.531 INFO [stderr]   |
Dec 14 10:43:58.531 INFO [stderr]   = note: consider adding a `main` function to `src/refcall.rs`
Dec 14 10:43:58.531 INFO [stderr] 
Dec 14 10:43:58.607 INFO [stderr] error: aborting due to previous error
Dec 14 10:43:58.657 INFO [stderr] 
Dec 14 10:43:58.657 INFO [stderr] For more information about this error, try `rustc --explain E0601`.
Dec 14 10:43:58.711 INFO [stderr] warning: unused variable: `post`
Dec 14 10:43:58.711 INFO [stderr]   --> src/blog.rs:30:25
Dec 14 10:43:58.711 INFO [stderr]    |
Dec 14 10:43:58.711 INFO [stderr] 30 |   fn content<'a>(&self, post: &'a Post) -> &'a str {
Dec 14 10:43:58.711 INFO [stderr]    |                         ^^^^ help: consider using `_post` instead
Dec 14 10:43:58.711 INFO [stderr]    |
Dec 14 10:43:58.711 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 14 10:43:58.711 INFO [stderr] 
Dec 14 10:43:58.723 INFO [stderr] error: Could not compile `rust_learning`.
Dec 14 10:43:58.723 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 14 10:43:59.767 INFO [stderr] warning: unused variable: `six`
Dec 14 10:43:59.767 INFO [stderr]   --> src/enum.rs:20:7
Dec 14 10:43:59.767 INFO [stderr]    |
Dec 14 10:43:59.767 INFO [stderr] 20 |   let six = IpAddrKind::V6;
Dec 14 10:43:59.767 INFO [stderr]    |       ^^^ help: consider using `_six` instead
Dec 14 10:43:59.795 INFO [stderr]    |
Dec 14 10:43:59.795 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 14 10:43:59.795 INFO [stderr] 
Dec 14 10:43:59.795 INFO [stderr] warning: unused variable: `home`
Dec 14 10:43:59.795 INFO [stderr]   --> src/enum.rs:27:7
Dec 14 10:43:59.795 INFO [stderr]    |
Dec 14 10:43:59.795 INFO [stderr] 27 |   let home = IpAddr {
Dec 14 10:43:59.795 INFO [stderr]    |       ^^^^ help: consider using `_home` instead
Dec 14 10:43:59.795 INFO [stderr] 
Dec 14 10:43:59.795 INFO [stderr] warning: unused variable: `op_type`
Dec 14 10:43:59.795 INFO [stderr]   --> src/enum.rs:35:10
Dec 14 10:43:59.795 INFO [stderr]    |
Dec 14 10:43:59.795 INFO [stderr] 35 | fn route(op_type: IpAddrKind) { }
Dec 14 10:43:59.795 INFO [stderr]    |          ^^^^^^^ help: consider using `_op_type` instead
Dec 14 10:43:59.795 INFO [stderr] 
Dec 14 10:43:59.819 INFO [stderr] warning: field is never used: `kind`
Dec 14 10:43:59.819 INFO [stderr]   --> src/enum.rs:14:3
Dec 14 10:43:59.819 INFO [stderr]    |
Dec 14 10:43:59.819 INFO [stderr] 14 |   kind: IpAddrKind,
Dec 14 10:43:59.819 INFO [stderr]    |   ^^^^^^^^^^^^^^^^
Dec 14 10:43:59.839 INFO [stderr]    |
Dec 14 10:43:59.839 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 14 10:43:59.839 INFO [stderr] 
Dec 14 10:43:59.839 INFO [stderr] warning: field is never used: `address`
Dec 14 10:43:59.839 INFO [stderr]   --> src/enum.rs:15:3
Dec 14 10:43:59.839 INFO [stderr]    |
Dec 14 10:43:59.839 INFO [stderr] 15 |   address: String
Dec 14 10:43:59.839 INFO [stderr]    |   ^^^^^^^^^^^^^^^
Dec 14 10:43:59.839 INFO [stderr] 
Dec 14 10:44:00.491 INFO [stderr] warning: field is never used: `query`
Dec 14 10:44:00.491 INFO [stderr]   --> src/read.rs:27:5
Dec 14 10:44:00.491 INFO [stderr]    |
Dec 14 10:44:00.491 INFO [stderr] 27 |     query: String,
Dec 14 10:44:00.491 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 14 10:44:00.491 INFO [stderr]    |
Dec 14 10:44:00.491 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 14 10:44:00.491 INFO [stderr] 
Dec 14 10:44:00.491 INFO [stderr] warning: function is never used: `search_case_insensitive`
Dec 14 10:44:00.491 INFO [stderr]   --> src/read.rs:82:1
Dec 14 10:44:00.491 INFO [stderr]    |
Dec 14 10:44:00.491 INFO [stderr] 82 | fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
Dec 14 10:44:00.491 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:44:00.491 INFO [stderr] 
Dec 14 10:44:01.153 INFO [stderr] error: build failed
Dec 14 10:44:01.155 INFO [stderr] su: No module specific data is present
Dec 14 10:44:02.099 INFO running `"docker" "inspect" "2b113e4b236cd5877fcbc8bf931f24cd1f117d899bedbd5e3868d24ac76d8369"`
Dec 14 10:44:02.369 INFO running `"docker" "rm" "-f" "2b113e4b236cd5877fcbc8bf931f24cd1f117d899bedbd5e3868d24ac76d8369"`
Dec 14 10:44:02.627 INFO [stdout] 2b113e4b236cd5877fcbc8bf931f24cd1f117d899bedbd5e3868d24ac76d8369