Dec 13 03:37:00.782 INFO testing shanemikel/rust-hello against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 13 03:37:00.782 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 13 03:37:01.468 INFO [stdout] 4cac9dc4dc10194f682a32ceb84ae4d8552624bf1238c395f959b4a936525a44
Dec 13 03:37:01.470 INFO running `"docker" "start" "-a" "4cac9dc4dc10194f682a32ceb84ae4d8552624bf1238c395f959b4a936525a44"`
Dec 13 03:37:02.739 INFO [stderr] usermod: no changes
Dec 13 03:37:02.803 INFO [stderr]    Compiling rust-hello v0.1.0 (/source)
Dec 13 03:37:03.080 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 13 03:37:03.080 INFO [stderr]  --> src/main.rs:8:9
Dec 13 03:37:03.080 INFO [stderr]   |
Dec 13 03:37:03.080 INFO [stderr] 8 |     use std::cell::RefCell;
Dec 13 03:37:03.080 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^
Dec 13 03:37:03.080 INFO [stderr]   |
Dec 13 03:37:03.080 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 03:37:03.080 INFO [stderr] 
Dec 13 03:37:03.080 INFO [stderr] warning: unused import: `Mutex`
Dec 13 03:37:03.080 INFO [stderr]  --> src/main.rs:9:26
Dec 13 03:37:03.080 INFO [stderr]   |
Dec 13 03:37:03.080 INFO [stderr] 9 |     use std::sync::{Arc, Mutex, RwLock};
Dec 13 03:37:03.080 INFO [stderr]   |                          ^^^^^
Dec 13 03:37:03.080 INFO [stderr] 
Dec 13 03:37:03.203 INFO [stderr] warning: unused variable: `data`
Dec 13 03:37:03.203 INFO [stderr]   --> src/main.rs:25:17
Dec 13 03:37:03.203 INFO [stderr]    |
Dec 13 03:37:03.203 INFO [stderr] 25 |             let data = data.read().unwrap();
Dec 13 03:37:03.203 INFO [stderr]    |                 ^^^^ help: consider using `_data` instead
Dec 13 03:37:03.203 INFO [stderr]    |
Dec 13 03:37:03.211 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 03:37:03.211 INFO [stderr] 
Dec 13 03:37:03.219 INFO [stderr] warning: enum is never used: `List`
Dec 13 03:37:03.219 INFO [stderr]  --> src/list.rs:3:1
Dec 13 03:37:03.219 INFO [stderr]   |
Dec 13 03:37:03.219 INFO [stderr] 3 | pub enum List<T> {
Dec 13 03:37:03.219 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 13 03:37:03.219 INFO [stderr]   |
Dec 13 03:37:03.219 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 13 03:37:03.219 INFO [stderr] 
Dec 13 03:37:03.219 INFO [stderr] warning: method is never used: `new`
Dec 13 03:37:03.219 INFO [stderr]  --> src/list.rs:9:5
Dec 13 03:37:03.219 INFO [stderr]   |
Dec 13 03:37:03.219 INFO [stderr] 9 |     pub fn new() -> List<T> { List::Nil }
Dec 13 03:37:03.219 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:03.219 INFO [stderr] 
Dec 13 03:37:03.219 INFO [stderr] warning: method is never used: `cons`
Dec 13 03:37:03.219 INFO [stderr]   --> src/list.rs:11:5
Dec 13 03:37:03.219 INFO [stderr]    |
Dec 13 03:37:03.219 INFO [stderr] 11 |     pub fn cons(self, x: T) -> List<T> { List::Cons(x, Box::new(self)) }
Dec 13 03:37:03.219 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:03.219 INFO [stderr] 
Dec 13 03:37:03.219 INFO [stderr] warning: method is never used: `head`
Dec 13 03:37:03.219 INFO [stderr]   --> src/list.rs:13:5
Dec 13 03:37:03.219 INFO [stderr]    |
Dec 13 03:37:03.219 INFO [stderr] 13 |     pub fn head(self) -> Option<T> {
Dec 13 03:37:03.219 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:03.219 INFO [stderr] 
Dec 13 03:37:03.219 INFO [stderr] warning: method is never used: `tail`
Dec 13 03:37:03.220 INFO [stderr]   --> src/list.rs:20:5
Dec 13 03:37:03.220 INFO [stderr]    |
Dec 13 03:37:03.220 INFO [stderr] 20 |     pub fn tail(&self) -> Option<&List<T>> {
Dec 13 03:37:03.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:03.220 INFO [stderr] 
Dec 13 03:37:03.220 INFO [stderr] warning: method is never used: `head_ref`
Dec 13 03:37:03.220 INFO [stderr]   --> src/list.rs:29:5
Dec 13 03:37:03.220 INFO [stderr]    |
Dec 13 03:37:03.220 INFO [stderr] 29 |     pub fn head_ref(&self) -> Option<T> {
Dec 13 03:37:03.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:03.220 INFO [stderr] 
Dec 13 03:37:03.220 INFO [stderr] warning: constant item is never used: `N`
Dec 13 03:37:03.220 INFO [stderr]   --> src/main.rs:13:5
Dec 13 03:37:03.220 INFO [stderr]    |
Dec 13 03:37:03.220 INFO [stderr] 13 |     const N: usize = 10;
Dec 13 03:37:03.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:03.220 INFO [stderr] 
Dec 13 03:37:03.220 INFO [stderr] warning: function is never used: `test_list`
Dec 13 03:37:03.220 INFO [stderr]   --> src/main.rs:39:1
Dec 13 03:37:03.220 INFO [stderr]    |
Dec 13 03:37:03.220 INFO [stderr] 39 | fn test_list() {
Dec 13 03:37:03.220 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 13 03:37:03.220 INFO [stderr] 
Dec 13 03:37:04.355 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
Dec 13 03:37:04.358 INFO [stderr] su: No module specific data is present
Dec 13 03:37:05.243 INFO running `"docker" "inspect" "4cac9dc4dc10194f682a32ceb84ae4d8552624bf1238c395f959b4a936525a44"`
Dec 13 03:37:05.664 INFO running `"docker" "rm" "-f" "4cac9dc4dc10194f682a32ceb84ae4d8552624bf1238c395f959b4a936525a44"`
Dec 13 03:37:06.015 INFO [stdout] 4cac9dc4dc10194f682a32ceb84ae4d8552624bf1238c395f959b4a936525a44
Dec 13 03:37:06.023 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-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 13 03:37:06.425 INFO [stdout] b870a770a16e5fd8083d99d9742d847120868c305ea5c0040a26f8d8bdadd009
Dec 13 03:37:06.427 INFO running `"docker" "start" "-a" "b870a770a16e5fd8083d99d9742d847120868c305ea5c0040a26f8d8bdadd009"`
Dec 13 03:37:08.473 INFO [stderr] usermod: no changes
Dec 13 03:37:08.537 INFO [stderr]    Compiling rust-hello v0.1.0 (/source)
Dec 13 03:37:08.815 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 13 03:37:08.815 INFO [stderr]  --> src/main.rs:8:9
Dec 13 03:37:08.815 INFO [stderr]   |
Dec 13 03:37:08.815 INFO [stderr] 8 |     use std::cell::RefCell;
Dec 13 03:37:08.815 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^
Dec 13 03:37:08.815 INFO [stderr]   |
Dec 13 03:37:08.815 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 03:37:08.815 INFO [stderr] 
Dec 13 03:37:08.815 INFO [stderr] warning: unused import: `Mutex`
Dec 13 03:37:08.815 INFO [stderr]  --> src/main.rs:9:26
Dec 13 03:37:08.815 INFO [stderr]   |
Dec 13 03:37:08.815 INFO [stderr] 9 |     use std::sync::{Arc, Mutex, RwLock};
Dec 13 03:37:08.815 INFO [stderr]   |                          ^^^^^
Dec 13 03:37:08.835 INFO [stderr] 
Dec 13 03:37:08.944 INFO [stderr] warning: unused variable: `data`
Dec 13 03:37:08.944 INFO [stderr]   --> src/main.rs:25:17
Dec 13 03:37:08.944 INFO [stderr]    |
Dec 13 03:37:08.944 INFO [stderr] 25 |             let data = data.read().unwrap();
Dec 13 03:37:08.944 INFO [stderr]    |                 ^^^^ help: consider using `_data` instead
Dec 13 03:37:08.944 INFO [stderr]    |
Dec 13 03:37:08.944 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 03:37:08.944 INFO [stderr] 
Dec 13 03:37:08.961 INFO [stderr] warning: enum is never used: `List`
Dec 13 03:37:08.961 INFO [stderr]  --> src/list.rs:3:1
Dec 13 03:37:08.961 INFO [stderr]   |
Dec 13 03:37:08.961 INFO [stderr] 3 | pub enum List<T> {
Dec 13 03:37:08.961 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 13 03:37:08.961 INFO [stderr]   |
Dec 13 03:37:08.961 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 13 03:37:08.961 INFO [stderr] 
Dec 13 03:37:08.961 INFO [stderr] warning: method is never used: `new`
Dec 13 03:37:08.961 INFO [stderr]  --> src/list.rs:9:5
Dec 13 03:37:08.961 INFO [stderr]   |
Dec 13 03:37:08.961 INFO [stderr] 9 |     pub fn new() -> List<T> { List::Nil }
Dec 13 03:37:08.961 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:08.961 INFO [stderr] 
Dec 13 03:37:08.961 INFO [stderr] warning: method is never used: `cons`
Dec 13 03:37:08.961 INFO [stderr]   --> src/list.rs:11:5
Dec 13 03:37:08.961 INFO [stderr]    |
Dec 13 03:37:08.961 INFO [stderr] 11 |     pub fn cons(self, x: T) -> List<T> { List::Cons(x, Box::new(self)) }
Dec 13 03:37:08.961 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:08.961 INFO [stderr] 
Dec 13 03:37:08.961 INFO [stderr] warning: method is never used: `head`
Dec 13 03:37:08.961 INFO [stderr]   --> src/list.rs:13:5
Dec 13 03:37:08.961 INFO [stderr]    |
Dec 13 03:37:08.961 INFO [stderr] 13 |     pub fn head(self) -> Option<T> {
Dec 13 03:37:08.961 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:08.961 INFO [stderr] 
Dec 13 03:37:08.961 INFO [stderr] warning: method is never used: `tail`
Dec 13 03:37:08.961 INFO [stderr]   --> src/list.rs:20:5
Dec 13 03:37:08.961 INFO [stderr]    |
Dec 13 03:37:08.961 INFO [stderr] 20 |     pub fn tail(&self) -> Option<&List<T>> {
Dec 13 03:37:08.961 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:08.961 INFO [stderr] 
Dec 13 03:37:08.961 INFO [stderr] warning: method is never used: `head_ref`
Dec 13 03:37:08.961 INFO [stderr]   --> src/list.rs:29:5
Dec 13 03:37:08.961 INFO [stderr]    |
Dec 13 03:37:08.961 INFO [stderr] 29 |     pub fn head_ref(&self) -> Option<T> {
Dec 13 03:37:08.961 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:08.961 INFO [stderr] 
Dec 13 03:37:08.961 INFO [stderr] warning: constant item is never used: `N`
Dec 13 03:37:08.961 INFO [stderr]   --> src/main.rs:13:5
Dec 13 03:37:08.961 INFO [stderr]    |
Dec 13 03:37:08.961 INFO [stderr] 13 |     const N: usize = 10;
Dec 13 03:37:08.961 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:08.961 INFO [stderr] 
Dec 13 03:37:08.961 INFO [stderr] warning: function is never used: `test_list`
Dec 13 03:37:08.961 INFO [stderr]   --> src/main.rs:39:1
Dec 13 03:37:08.961 INFO [stderr]    |
Dec 13 03:37:08.961 INFO [stderr] 39 | fn test_list() {
Dec 13 03:37:08.961 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 13 03:37:08.961 INFO [stderr] 
Dec 13 03:37:09.423 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
Dec 13 03:37:09.426 INFO [stderr] su: No module specific data is present
Dec 13 03:37:10.383 INFO running `"docker" "inspect" "b870a770a16e5fd8083d99d9742d847120868c305ea5c0040a26f8d8bdadd009"`
Dec 13 03:37:10.651 INFO running `"docker" "rm" "-f" "b870a770a16e5fd8083d99d9742d847120868c305ea5c0040a26f8d8bdadd009"`
Dec 13 03:37:10.902 INFO [stdout] b870a770a16e5fd8083d99d9742d847120868c305ea5c0040a26f8d8bdadd009
Dec 13 03:37:10.905 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-6/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --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 13 03:37:11.492 INFO [stdout] 3fcf2bb383095dbe0eee1be65f447b7df9f771d8f1c1d0c77516d4dd40264025
Dec 13 03:37:11.494 INFO running `"docker" "start" "-a" "3fcf2bb383095dbe0eee1be65f447b7df9f771d8f1c1d0c77516d4dd40264025"`
Dec 13 03:37:12.983 INFO [stderr] usermod: no changes
Dec 13 03:37:13.039 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Dec 13 03:37:13.051 INFO [stderr]      Running /target/debug/deps/rust_hello-a5a84b8884e5bd00
Dec 13 03:37:13.058 INFO [stderr] su: No module specific data is present
Dec 13 03:37:13.058 INFO [stdout] 
Dec 13 03:37:13.058 INFO [stdout] running 0 tests
Dec 13 03:37:13.058 INFO [stdout] 
Dec 13 03:37:13.058 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 03:37:13.058 INFO [stdout] 
Dec 13 03:37:14.292 INFO running `"docker" "inspect" "3fcf2bb383095dbe0eee1be65f447b7df9f771d8f1c1d0c77516d4dd40264025"`
Dec 13 03:37:14.511 INFO running `"docker" "rm" "-f" "3fcf2bb383095dbe0eee1be65f447b7df9f771d8f1c1d0c77516d4dd40264025"`
Dec 13 03:37:14.791 INFO [stdout] 3fcf2bb383095dbe0eee1be65f447b7df9f771d8f1c1d0c77516d4dd40264025