Dec 05 07:45:53.463 INFO testing shanemikel/rust-hello against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 05 07:45:53.463 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 07:45:53.948 INFO [stdout] 4197b3eb17ff74c7b88205f39835f00e2f09cb59b0a7a4dadd66a94f119971d0
Dec 05 07:45:53.952 INFO running `"docker" "start" "-a" "4197b3eb17ff74c7b88205f39835f00e2f09cb59b0a7a4dadd66a94f119971d0"`
Dec 05 07:45:55.808 INFO [stderr] usermod: no changes
Dec 05 07:45:55.880 INFO [stderr]    Compiling rust-hello v0.1.0 (/source)
Dec 05 07:45:56.168 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 05 07:45:56.168 INFO [stderr]  --> src/main.rs:8:9
Dec 05 07:45:56.168 INFO [stderr]   |
Dec 05 07:45:56.168 INFO [stderr] 8 |     use std::cell::RefCell;
Dec 05 07:45:56.168 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.168 INFO [stderr]   |
Dec 05 07:45:56.168 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 07:45:56.168 INFO [stderr] 
Dec 05 07:45:56.168 INFO [stderr] warning: unused import: `Mutex`
Dec 05 07:45:56.168 INFO [stderr]  --> src/main.rs:9:26
Dec 05 07:45:56.168 INFO [stderr]   |
Dec 05 07:45:56.168 INFO [stderr] 9 |     use std::sync::{Arc, Mutex, RwLock};
Dec 05 07:45:56.168 INFO [stderr]   |                          ^^^^^
Dec 05 07:45:56.168 INFO [stderr] 
Dec 05 07:45:56.262 INFO [stderr] warning: unused variable: `data`
Dec 05 07:45:56.262 INFO [stderr]   --> src/main.rs:25:17
Dec 05 07:45:56.262 INFO [stderr]    |
Dec 05 07:45:56.262 INFO [stderr] 25 |             let data = data.read().unwrap();
Dec 05 07:45:56.262 INFO [stderr]    |                 ^^^^ help: consider using `_data` instead
Dec 05 07:45:56.262 INFO [stderr]    |
Dec 05 07:45:56.262 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 07:45:56.262 INFO [stderr] 
Dec 05 07:45:56.276 INFO [stderr] warning: enum is never used: `List`
Dec 05 07:45:56.276 INFO [stderr]  --> src/list.rs:3:1
Dec 05 07:45:56.276 INFO [stderr]   |
Dec 05 07:45:56.276 INFO [stderr] 3 | pub enum List<T> {
Dec 05 07:45:56.276 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 05 07:45:56.276 INFO [stderr]   |
Dec 05 07:45:56.276 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 07:45:56.276 INFO [stderr] 
Dec 05 07:45:56.276 INFO [stderr] warning: method is never used: `new`
Dec 05 07:45:56.276 INFO [stderr]  --> src/list.rs:9:5
Dec 05 07:45:56.276 INFO [stderr]   |
Dec 05 07:45:56.276 INFO [stderr] 9 |     pub fn new() -> List<T> { List::Nil }
Dec 05 07:45:56.276 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.276 INFO [stderr] 
Dec 05 07:45:56.276 INFO [stderr] warning: method is never used: `cons`
Dec 05 07:45:56.276 INFO [stderr]   --> src/list.rs:11:5
Dec 05 07:45:56.276 INFO [stderr]    |
Dec 05 07:45:56.276 INFO [stderr] 11 |     pub fn cons(self, x: T) -> List<T> { List::Cons(x, Box::new(self)) }
Dec 05 07:45:56.276 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.276 INFO [stderr] 
Dec 05 07:45:56.276 INFO [stderr] warning: method is never used: `head`
Dec 05 07:45:56.276 INFO [stderr]   --> src/list.rs:13:5
Dec 05 07:45:56.276 INFO [stderr]    |
Dec 05 07:45:56.276 INFO [stderr] 13 |     pub fn head(self) -> Option<T> {
Dec 05 07:45:56.276 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.276 INFO [stderr] 
Dec 05 07:45:56.276 INFO [stderr] warning: method is never used: `tail`
Dec 05 07:45:56.276 INFO [stderr]   --> src/list.rs:20:5
Dec 05 07:45:56.276 INFO [stderr]    |
Dec 05 07:45:56.276 INFO [stderr] 20 |     pub fn tail(&self) -> Option<&List<T>> {
Dec 05 07:45:56.276 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.276 INFO [stderr] 
Dec 05 07:45:56.276 INFO [stderr] warning: method is never used: `head_ref`
Dec 05 07:45:56.276 INFO [stderr]   --> src/list.rs:29:5
Dec 05 07:45:56.276 INFO [stderr]    |
Dec 05 07:45:56.276 INFO [stderr] 29 |     pub fn head_ref(&self) -> Option<T> {
Dec 05 07:45:56.276 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.276 INFO [stderr] 
Dec 05 07:45:56.276 INFO [stderr] warning: constant item is never used: `N`
Dec 05 07:45:56.276 INFO [stderr]   --> src/main.rs:13:5
Dec 05 07:45:56.276 INFO [stderr]    |
Dec 05 07:45:56.276 INFO [stderr] 13 |     const N: usize = 10;
Dec 05 07:45:56.276 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 07:45:56.276 INFO [stderr] 
Dec 05 07:45:56.276 INFO [stderr] warning: function is never used: `test_list`
Dec 05 07:45:56.276 INFO [stderr]   --> src/main.rs:39:1
Dec 05 07:45:56.277 INFO [stderr]    |
Dec 05 07:45:56.277 INFO [stderr] 39 | fn test_list() {
Dec 05 07:45:56.277 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 05 07:45:56.277 INFO [stderr] 
Dec 05 07:45:57.492 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.66s
Dec 05 07:45:57.494 INFO [stderr] su: No module specific data is present
Dec 05 07:45:58.056 INFO running `"docker" "inspect" "4197b3eb17ff74c7b88205f39835f00e2f09cb59b0a7a4dadd66a94f119971d0"`
Dec 05 07:45:58.360 INFO running `"docker" "rm" "-f" "4197b3eb17ff74c7b88205f39835f00e2f09cb59b0a7a4dadd66a94f119971d0"`
Dec 05 07:45:58.657 INFO [stdout] 4197b3eb17ff74c7b88205f39835f00e2f09cb59b0a7a4dadd66a94f119971d0
Dec 05 07:45:58.666 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 07:45:59.196 INFO [stdout] 05dc498421efd611b8bb580dc3ec3a856ea537a307a14e97282cfa133aff845d
Dec 05 07:45:59.204 INFO running `"docker" "start" "-a" "05dc498421efd611b8bb580dc3ec3a856ea537a307a14e97282cfa133aff845d"`
Dec 05 07:46:00.402 INFO [stderr] usermod: no changes
Dec 05 07:46:00.452 INFO [stderr]    Compiling rust-hello v0.1.0 (/source)
Dec 05 07:46:00.728 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 05 07:46:00.728 INFO [stderr]  --> src/main.rs:8:9
Dec 05 07:46:00.728 INFO [stderr]   |
Dec 05 07:46:00.728 INFO [stderr] 8 |     use std::cell::RefCell;
Dec 05 07:46:00.728 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.728 INFO [stderr]   |
Dec 05 07:46:00.728 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 07:46:00.728 INFO [stderr] 
Dec 05 07:46:00.728 INFO [stderr] warning: unused import: `Mutex`
Dec 05 07:46:00.728 INFO [stderr]  --> src/main.rs:9:26
Dec 05 07:46:00.728 INFO [stderr]   |
Dec 05 07:46:00.728 INFO [stderr] 9 |     use std::sync::{Arc, Mutex, RwLock};
Dec 05 07:46:00.728 INFO [stderr]   |                          ^^^^^
Dec 05 07:46:00.728 INFO [stderr] 
Dec 05 07:46:00.844 INFO [stderr] warning: unused variable: `data`
Dec 05 07:46:00.844 INFO [stderr]   --> src/main.rs:25:17
Dec 05 07:46:00.844 INFO [stderr]    |
Dec 05 07:46:00.844 INFO [stderr] 25 |             let data = data.read().unwrap();
Dec 05 07:46:00.844 INFO [stderr]    |                 ^^^^ help: consider using `_data` instead
Dec 05 07:46:00.844 INFO [stderr]    |
Dec 05 07:46:00.844 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 07:46:00.844 INFO [stderr] 
Dec 05 07:46:00.868 INFO [stderr] warning: enum is never used: `List`
Dec 05 07:46:00.868 INFO [stderr]  --> src/list.rs:3:1
Dec 05 07:46:00.868 INFO [stderr]   |
Dec 05 07:46:00.868 INFO [stderr] 3 | pub enum List<T> {
Dec 05 07:46:00.868 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 05 07:46:00.868 INFO [stderr]   |
Dec 05 07:46:00.868 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 07:46:00.869 INFO [stderr] 
Dec 05 07:46:00.869 INFO [stderr] warning: method is never used: `new`
Dec 05 07:46:00.869 INFO [stderr]  --> src/list.rs:9:5
Dec 05 07:46:00.869 INFO [stderr]   |
Dec 05 07:46:00.869 INFO [stderr] 9 |     pub fn new() -> List<T> { List::Nil }
Dec 05 07:46:00.869 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.869 INFO [stderr] 
Dec 05 07:46:00.869 INFO [stderr] warning: method is never used: `cons`
Dec 05 07:46:00.869 INFO [stderr]   --> src/list.rs:11:5
Dec 05 07:46:00.869 INFO [stderr]    |
Dec 05 07:46:00.869 INFO [stderr] 11 |     pub fn cons(self, x: T) -> List<T> { List::Cons(x, Box::new(self)) }
Dec 05 07:46:00.869 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.869 INFO [stderr] 
Dec 05 07:46:00.869 INFO [stderr] warning: method is never used: `head`
Dec 05 07:46:00.869 INFO [stderr]   --> src/list.rs:13:5
Dec 05 07:46:00.869 INFO [stderr]    |
Dec 05 07:46:00.869 INFO [stderr] 13 |     pub fn head(self) -> Option<T> {
Dec 05 07:46:00.869 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.869 INFO [stderr] 
Dec 05 07:46:00.869 INFO [stderr] warning: method is never used: `tail`
Dec 05 07:46:00.869 INFO [stderr]   --> src/list.rs:20:5
Dec 05 07:46:00.869 INFO [stderr]    |
Dec 05 07:46:00.869 INFO [stderr] 20 |     pub fn tail(&self) -> Option<&List<T>> {
Dec 05 07:46:00.869 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.869 INFO [stderr] 
Dec 05 07:46:00.869 INFO [stderr] warning: method is never used: `head_ref`
Dec 05 07:46:00.869 INFO [stderr]   --> src/list.rs:29:5
Dec 05 07:46:00.869 INFO [stderr]    |
Dec 05 07:46:00.869 INFO [stderr] 29 |     pub fn head_ref(&self) -> Option<T> {
Dec 05 07:46:00.869 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.869 INFO [stderr] 
Dec 05 07:46:00.869 INFO [stderr] warning: constant item is never used: `N`
Dec 05 07:46:00.869 INFO [stderr]   --> src/main.rs:13:5
Dec 05 07:46:00.869 INFO [stderr]    |
Dec 05 07:46:00.869 INFO [stderr] 13 |     const N: usize = 10;
Dec 05 07:46:00.869 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 07:46:00.869 INFO [stderr] 
Dec 05 07:46:00.869 INFO [stderr] warning: function is never used: `test_list`
Dec 05 07:46:00.869 INFO [stderr]   --> src/main.rs:39:1
Dec 05 07:46:00.869 INFO [stderr]    |
Dec 05 07:46:00.869 INFO [stderr] 39 | fn test_list() {
Dec 05 07:46:00.869 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 05 07:46:00.869 INFO [stderr] 
Dec 05 07:46:01.261 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
Dec 05 07:46:01.263 INFO [stderr] su: No module specific data is present
Dec 05 07:46:02.071 INFO running `"docker" "inspect" "05dc498421efd611b8bb580dc3ec3a856ea537a307a14e97282cfa133aff845d"`
Dec 05 07:46:02.338 INFO running `"docker" "rm" "-f" "05dc498421efd611b8bb580dc3ec3a856ea537a307a14e97282cfa133aff845d"`
Dec 05 07:46:02.584 INFO [stdout] 05dc498421efd611b8bb580dc3ec3a856ea537a307a14e97282cfa133aff845d
Dec 05 07:46:02.592 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 07:46:02.994 INFO [stdout] db843269fc7bbc422f6256fb4e9c7b2b85234e8b45b46b9368c76b1a4d7a7a80
Dec 05 07:46:02.996 INFO running `"docker" "start" "-a" "db843269fc7bbc422f6256fb4e9c7b2b85234e8b45b46b9368c76b1a4d7a7a80"`
Dec 05 07:46:04.339 INFO [stderr] usermod: no changes
Dec 05 07:46:04.417 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Dec 05 07:46:04.436 INFO [stderr]      Running /target/debug/deps/rust_hello-3c9141029613969d
Dec 05 07:46:04.436 INFO [stderr] su: No module specific data is present
Dec 05 07:46:04.436 INFO [stdout] 
Dec 05 07:46:04.436 INFO [stdout] running 0 tests
Dec 05 07:46:04.436 INFO [stdout] 
Dec 05 07:46:04.436 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 07:46:04.436 INFO [stdout] 
Dec 05 07:46:05.628 INFO running `"docker" "inspect" "db843269fc7bbc422f6256fb4e9c7b2b85234e8b45b46b9368c76b1a4d7a7a80"`
Dec 05 07:46:05.988 INFO running `"docker" "rm" "-f" "db843269fc7bbc422f6256fb4e9c7b2b85234e8b45b46b9368c76b1a4d7a7a80"`
Dec 05 07:46:06.344 INFO [stdout] db843269fc7bbc422f6256fb4e9c7b2b85234e8b45b46b9368c76b1a4d7a7a80