Dec 05 07:45:53.721 INFO testing shanemikel/rust-hello against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 07:45:53.721 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 05 07:45:54.060 INFO [stdout] 79a657411200d9043ec83b36e7b41d0ea16e461e7bbdcfd18354652de78224db
Dec 05 07:45:54.063 INFO running `"docker" "start" "-a" "79a657411200d9043ec83b36e7b41d0ea16e461e7bbdcfd18354652de78224db"`
Dec 05 07:45:55.712 INFO [stderr] usermod: no changes
Dec 05 07:45:55.748 INFO [stderr]    Compiling rust-hello v0.1.0 (/source)
Dec 05 07:45:55.996 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 05 07:45:55.996 INFO [stderr]  --> src/main.rs:8:9
Dec 05 07:45:55.996 INFO [stderr]   |
Dec 05 07:45:55.996 INFO [stderr] 8 |     use std::cell::RefCell;
Dec 05 07:45:55.996 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^
Dec 05 07:45:55.996 INFO [stderr]   |
Dec 05 07:45:55.996 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 07:45:55.996 INFO [stderr] 
Dec 05 07:45:55.996 INFO [stderr] warning: unused import: `Mutex`
Dec 05 07:45:55.997 INFO [stderr]  --> src/main.rs:9:26
Dec 05 07:45:55.997 INFO [stderr]   |
Dec 05 07:45:55.997 INFO [stderr] 9 |     use std::sync::{Arc, Mutex, RwLock};
Dec 05 07:45:55.997 INFO [stderr]   |                          ^^^^^
Dec 05 07:45:55.997 INFO [stderr] 
Dec 05 07:45:56.100 INFO [stderr] warning: unused variable: `data`
Dec 05 07:45:56.100 INFO [stderr]   --> src/main.rs:25:17
Dec 05 07:45:56.101 INFO [stderr]    |
Dec 05 07:45:56.101 INFO [stderr] 25 |             let data = data.read().unwrap();
Dec 05 07:45:56.101 INFO [stderr]    |                 ^^^^ help: consider using `_data` instead
Dec 05 07:45:56.102 INFO [stderr]    |
Dec 05 07:45:56.102 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 07:45:56.102 INFO [stderr] 
Dec 05 07:45:56.115 INFO [stderr] warning: enum is never used: `List`
Dec 05 07:45:56.115 INFO [stderr]  --> src/list.rs:3:1
Dec 05 07:45:56.115 INFO [stderr]   |
Dec 05 07:45:56.116 INFO [stderr] 3 | pub enum List<T> {
Dec 05 07:45:56.116 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 05 07:45:56.116 INFO [stderr]   |
Dec 05 07:45:56.117 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 07:45:56.117 INFO [stderr] 
Dec 05 07:45:56.117 INFO [stderr] warning: method is never used: `new`
Dec 05 07:45:56.117 INFO [stderr]  --> src/list.rs:9:5
Dec 05 07:45:56.118 INFO [stderr]   |
Dec 05 07:45:56.118 INFO [stderr] 9 |     pub fn new() -> List<T> { List::Nil }
Dec 05 07:45:56.118 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.119 INFO [stderr] 
Dec 05 07:45:56.119 INFO [stderr] warning: method is never used: `cons`
Dec 05 07:45:56.119 INFO [stderr]   --> src/list.rs:11:5
Dec 05 07:45:56.119 INFO [stderr]    |
Dec 05 07:45:56.119 INFO [stderr] 11 |     pub fn cons(self, x: T) -> List<T> { List::Cons(x, Box::new(self)) }
Dec 05 07:45:56.119 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.119 INFO [stderr] 
Dec 05 07:45:56.119 INFO [stderr] warning: method is never used: `head`
Dec 05 07:45:56.119 INFO [stderr]   --> src/list.rs:13:5
Dec 05 07:45:56.119 INFO [stderr]    |
Dec 05 07:45:56.119 INFO [stderr] 13 |     pub fn head(self) -> Option<T> {
Dec 05 07:45:56.119 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.119 INFO [stderr] 
Dec 05 07:45:56.119 INFO [stderr] warning: method is never used: `tail`
Dec 05 07:45:56.119 INFO [stderr]   --> src/list.rs:20:5
Dec 05 07:45:56.119 INFO [stderr]    |
Dec 05 07:45:56.119 INFO [stderr] 20 |     pub fn tail(&self) -> Option<&List<T>> {
Dec 05 07:45:56.119 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.119 INFO [stderr] 
Dec 05 07:45:56.119 INFO [stderr] warning: method is never used: `head_ref`
Dec 05 07:45:56.119 INFO [stderr]   --> src/list.rs:29:5
Dec 05 07:45:56.119 INFO [stderr]    |
Dec 05 07:45:56.119 INFO [stderr] 29 |     pub fn head_ref(&self) -> Option<T> {
Dec 05 07:45:56.119 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.119 INFO [stderr] 
Dec 05 07:45:56.119 INFO [stderr] warning: constant item is never used: `N`
Dec 05 07:45:56.119 INFO [stderr]   --> src/main.rs:13:5
Dec 05 07:45:56.119 INFO [stderr]    |
Dec 05 07:45:56.119 INFO [stderr] 13 |     const N: usize = 10;
Dec 05 07:45:56.119 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.119 INFO [stderr] 
Dec 05 07:45:56.119 INFO [stderr] warning: function is never used: `test_list`
Dec 05 07:45:56.119 INFO [stderr]   --> src/main.rs:39:1
Dec 05 07:45:56.119 INFO [stderr]    |
Dec 05 07:45:56.119 INFO [stderr] 39 | fn test_list() {
Dec 05 07:45:56.119 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 05 07:45:56.119 INFO [stderr] 
Dec 05 07:45:57.256 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
Dec 05 07:45:57.256 INFO [stderr] su: No module specific data is present
Dec 05 07:45:58.006 INFO running `"docker" "inspect" "79a657411200d9043ec83b36e7b41d0ea16e461e7bbdcfd18354652de78224db"`
Dec 05 07:45:58.226 INFO running `"docker" "rm" "-f" "79a657411200d9043ec83b36e7b41d0ea16e461e7bbdcfd18354652de78224db"`
Dec 05 07:45:58.520 INFO [stdout] 79a657411200d9043ec83b36e7b41d0ea16e461e7bbdcfd18354652de78224db
Dec 05 07:45:58.526 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 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 05 07:45:58.984 INFO [stdout] 2cb3246c938042e8f9a4ed30237ff82e46ad9dc6a2a5fcb3f17decf5282fb844
Dec 05 07:45:58.990 INFO running `"docker" "start" "-a" "2cb3246c938042e8f9a4ed30237ff82e46ad9dc6a2a5fcb3f17decf5282fb844"`
Dec 05 07:46:00.200 INFO [stderr] usermod: no changes
Dec 05 07:46:00.292 INFO [stderr]    Compiling rust-hello v0.1.0 (/source)
Dec 05 07:46:00.561 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 05 07:46:00.562 INFO [stderr]  --> src/main.rs:8:9
Dec 05 07:46:00.562 INFO [stderr]   |
Dec 05 07:46:00.562 INFO [stderr] 8 |     use std::cell::RefCell;
Dec 05 07:46:00.562 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.562 INFO [stderr]   |
Dec 05 07:46:00.562 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 07:46:00.562 INFO [stderr] 
Dec 05 07:46:00.562 INFO [stderr] warning: unused import: `Mutex`
Dec 05 07:46:00.562 INFO [stderr]  --> src/main.rs:9:26
Dec 05 07:46:00.562 INFO [stderr]   |
Dec 05 07:46:00.562 INFO [stderr] 9 |     use std::sync::{Arc, Mutex, RwLock};
Dec 05 07:46:00.562 INFO [stderr]   |                          ^^^^^
Dec 05 07:46:00.562 INFO [stderr] 
Dec 05 07:46:00.664 INFO [stderr] warning: unused variable: `data`
Dec 05 07:46:00.664 INFO [stderr]   --> src/main.rs:25:17
Dec 05 07:46:00.664 INFO [stderr]    |
Dec 05 07:46:00.664 INFO [stderr] 25 |             let data = data.read().unwrap();
Dec 05 07:46:00.664 INFO [stderr]    |                 ^^^^ help: consider using `_data` instead
Dec 05 07:46:00.664 INFO [stderr]    |
Dec 05 07:46:00.664 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 07:46:00.664 INFO [stderr] 
Dec 05 07:46:00.681 INFO [stderr] warning: enum is never used: `List`
Dec 05 07:46:00.681 INFO [stderr]  --> src/list.rs:3:1
Dec 05 07:46:00.681 INFO [stderr]   |
Dec 05 07:46:00.681 INFO [stderr] 3 | pub enum List<T> {
Dec 05 07:46:00.681 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 05 07:46:00.681 INFO [stderr]   |
Dec 05 07:46:00.681 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 07:46:00.681 INFO [stderr] 
Dec 05 07:46:00.681 INFO [stderr] warning: method is never used: `new`
Dec 05 07:46:00.681 INFO [stderr]  --> src/list.rs:9:5
Dec 05 07:46:00.681 INFO [stderr]   |
Dec 05 07:46:00.681 INFO [stderr] 9 |     pub fn new() -> List<T> { List::Nil }
Dec 05 07:46:00.681 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.681 INFO [stderr] 
Dec 05 07:46:00.681 INFO [stderr] warning: method is never used: `cons`
Dec 05 07:46:00.681 INFO [stderr]   --> src/list.rs:11:5
Dec 05 07:46:00.681 INFO [stderr]    |
Dec 05 07:46:00.681 INFO [stderr] 11 |     pub fn cons(self, x: T) -> List<T> { List::Cons(x, Box::new(self)) }
Dec 05 07:46:00.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.681 INFO [stderr] 
Dec 05 07:46:00.681 INFO [stderr] warning: method is never used: `head`
Dec 05 07:46:00.681 INFO [stderr]   --> src/list.rs:13:5
Dec 05 07:46:00.681 INFO [stderr]    |
Dec 05 07:46:00.681 INFO [stderr] 13 |     pub fn head(self) -> Option<T> {
Dec 05 07:46:00.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.681 INFO [stderr] 
Dec 05 07:46:00.681 INFO [stderr] warning: method is never used: `tail`
Dec 05 07:46:00.681 INFO [stderr]   --> src/list.rs:20:5
Dec 05 07:46:00.681 INFO [stderr]    |
Dec 05 07:46:00.681 INFO [stderr] 20 |     pub fn tail(&self) -> Option<&List<T>> {
Dec 05 07:46:00.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.681 INFO [stderr] 
Dec 05 07:46:00.681 INFO [stderr] warning: method is never used: `head_ref`
Dec 05 07:46:00.681 INFO [stderr]   --> src/list.rs:29:5
Dec 05 07:46:00.681 INFO [stderr]    |
Dec 05 07:46:00.681 INFO [stderr] 29 |     pub fn head_ref(&self) -> Option<T> {
Dec 05 07:46:00.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.681 INFO [stderr] 
Dec 05 07:46:00.681 INFO [stderr] warning: constant item is never used: `N`
Dec 05 07:46:00.681 INFO [stderr]   --> src/main.rs:13:5
Dec 05 07:46:00.681 INFO [stderr]    |
Dec 05 07:46:00.681 INFO [stderr] 13 |     const N: usize = 10;
Dec 05 07:46:00.681 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.681 INFO [stderr] 
Dec 05 07:46:00.681 INFO [stderr] warning: function is never used: `test_list`
Dec 05 07:46:00.681 INFO [stderr]   --> src/main.rs:39:1
Dec 05 07:46:00.681 INFO [stderr]    |
Dec 05 07:46:00.681 INFO [stderr] 39 | fn test_list() {
Dec 05 07:46:00.681 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 05 07:46:00.681 INFO [stderr] 
Dec 05 07:46:01.032 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
Dec 05 07:46:01.040 INFO [stderr] su: No module specific data is present
Dec 05 07:46:01.820 INFO running `"docker" "inspect" "2cb3246c938042e8f9a4ed30237ff82e46ad9dc6a2a5fcb3f17decf5282fb844"`
Dec 05 07:46:02.076 INFO running `"docker" "rm" "-f" "2cb3246c938042e8f9a4ed30237ff82e46ad9dc6a2a5fcb3f17decf5282fb844"`
Dec 05 07:46:02.382 INFO [stdout] 2cb3246c938042e8f9a4ed30237ff82e46ad9dc6a2a5fcb3f17decf5282fb844
Dec 05 07:46:02.392 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 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 05 07:46:02.828 INFO [stdout] f7078432684041c6198ed4785568bbf9cb6b2475bb951d8299ca64de4f1e87c6
Dec 05 07:46:02.828 INFO running `"docker" "start" "-a" "f7078432684041c6198ed4785568bbf9cb6b2475bb951d8299ca64de4f1e87c6"`
Dec 05 07:46:04.150 INFO [stderr] usermod: no changes
Dec 05 07:46:04.216 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 05 07:46:04.217 INFO [stderr]      Running /target/debug/deps/rust_hello-5f0d200f8e982581
Dec 05 07:46:04.226 INFO [stdout] 
Dec 05 07:46:04.226 INFO [stdout] running 0 tests
Dec 05 07:46:04.226 INFO [stdout] 
Dec 05 07:46:04.226 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 07:46:04.226 INFO [stdout] 
Dec 05 07:46:04.230 INFO [stderr] su: No module specific data is present
Dec 05 07:46:05.371 INFO running `"docker" "inspect" "f7078432684041c6198ed4785568bbf9cb6b2475bb951d8299ca64de4f1e87c6"`
Dec 05 07:46:05.762 INFO running `"docker" "rm" "-f" "f7078432684041c6198ed4785568bbf9cb6b2475bb951d8299ca64de4f1e87c6"`
Dec 05 07:46:06.136 INFO [stdout] f7078432684041c6198ed4785568bbf9cb6b2475bb951d8299ca64de4f1e87c6