Dec 13 03:37:02.996 INFO testing shanemikel/rust-hello against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 03:37:02.996 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 13 03:37:03.684 INFO [stdout] efa670e506ce51790e029df3abecef244504a6305e46f3480bdfef37a491040f
Dec 13 03:37:03.686 INFO running `"docker" "start" "-a" "efa670e506ce51790e029df3abecef244504a6305e46f3480bdfef37a491040f"`
Dec 13 03:37:05.758 INFO [stderr] usermod: no changes
Dec 13 03:37:05.809 INFO [stderr]    Compiling rust-hello v0.1.0 (/source)
Dec 13 03:37:06.123 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 13 03:37:06.123 INFO [stderr]  --> src/main.rs:8:9
Dec 13 03:37:06.123 INFO [stderr]   |
Dec 13 03:37:06.123 INFO [stderr] 8 |     use std::cell::RefCell;
Dec 13 03:37:06.123 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^
Dec 13 03:37:06.123 INFO [stderr]   |
Dec 13 03:37:06.123 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 03:37:06.123 INFO [stderr] 
Dec 13 03:37:06.123 INFO [stderr] warning: unused import: `Mutex`
Dec 13 03:37:06.123 INFO [stderr]  --> src/main.rs:9:26
Dec 13 03:37:06.123 INFO [stderr]   |
Dec 13 03:37:06.123 INFO [stderr] 9 |     use std::sync::{Arc, Mutex, RwLock};
Dec 13 03:37:06.123 INFO [stderr]   |                          ^^^^^
Dec 13 03:37:06.123 INFO [stderr] 
Dec 13 03:37:06.226 INFO [stderr] warning: unused variable: `data`
Dec 13 03:37:06.226 INFO [stderr]   --> src/main.rs:25:17
Dec 13 03:37:06.226 INFO [stderr]    |
Dec 13 03:37:06.226 INFO [stderr] 25 |             let data = data.read().unwrap();
Dec 13 03:37:06.226 INFO [stderr]    |                 ^^^^ help: consider using `_data` instead
Dec 13 03:37:06.226 INFO [stderr]    |
Dec 13 03:37:06.226 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 03:37:06.226 INFO [stderr] 
Dec 13 03:37:06.249 INFO [stderr] warning: enum is never used: `List`
Dec 13 03:37:06.250 INFO [stderr]  --> src/list.rs:3:1
Dec 13 03:37:06.250 INFO [stderr]   |
Dec 13 03:37:06.250 INFO [stderr] 3 | pub enum List<T> {
Dec 13 03:37:06.250 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 13 03:37:06.250 INFO [stderr]   |
Dec 13 03:37:06.250 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 13 03:37:06.250 INFO [stderr] 
Dec 13 03:37:06.250 INFO [stderr] warning: method is never used: `new`
Dec 13 03:37:06.251 INFO [stderr]  --> src/list.rs:9:5
Dec 13 03:37:06.251 INFO [stderr]   |
Dec 13 03:37:06.251 INFO [stderr] 9 |     pub fn new() -> List<T> { List::Nil }
Dec 13 03:37:06.251 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:06.251 INFO [stderr] 
Dec 13 03:37:06.251 INFO [stderr] warning: method is never used: `cons`
Dec 13 03:37:06.251 INFO [stderr]   --> src/list.rs:11:5
Dec 13 03:37:06.251 INFO [stderr]    |
Dec 13 03:37:06.251 INFO [stderr] 11 |     pub fn cons(self, x: T) -> List<T> { List::Cons(x, Box::new(self)) }
Dec 13 03:37:06.251 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:06.251 INFO [stderr] 
Dec 13 03:37:06.252 INFO [stderr] warning: method is never used: `head`
Dec 13 03:37:06.252 INFO [stderr]   --> src/list.rs:13:5
Dec 13 03:37:06.252 INFO [stderr]    |
Dec 13 03:37:06.252 INFO [stderr] 13 |     pub fn head(self) -> Option<T> {
Dec 13 03:37:06.252 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:06.252 INFO [stderr] 
Dec 13 03:37:06.252 INFO [stderr] warning: method is never used: `tail`
Dec 13 03:37:06.252 INFO [stderr]   --> src/list.rs:20:5
Dec 13 03:37:06.252 INFO [stderr]    |
Dec 13 03:37:06.252 INFO [stderr] 20 |     pub fn tail(&self) -> Option<&List<T>> {
Dec 13 03:37:06.252 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:06.252 INFO [stderr] 
Dec 13 03:37:06.252 INFO [stderr] warning: method is never used: `head_ref`
Dec 13 03:37:06.252 INFO [stderr]   --> src/list.rs:29:5
Dec 13 03:37:06.252 INFO [stderr]    |
Dec 13 03:37:06.252 INFO [stderr] 29 |     pub fn head_ref(&self) -> Option<T> {
Dec 13 03:37:06.252 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:06.252 INFO [stderr] 
Dec 13 03:37:06.252 INFO [stderr] warning: constant item is never used: `N`
Dec 13 03:37:06.252 INFO [stderr]   --> src/main.rs:13:5
Dec 13 03:37:06.252 INFO [stderr]    |
Dec 13 03:37:06.252 INFO [stderr] 13 |     const N: usize = 10;
Dec 13 03:37:06.252 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:06.252 INFO [stderr] 
Dec 13 03:37:06.252 INFO [stderr] warning: function is never used: `test_list`
Dec 13 03:37:06.252 INFO [stderr]   --> src/main.rs:39:1
Dec 13 03:37:06.252 INFO [stderr]    |
Dec 13 03:37:06.252 INFO [stderr] 39 | fn test_list() {
Dec 13 03:37:06.252 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 13 03:37:06.252 INFO [stderr] 
Dec 13 03:37:07.487 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
Dec 13 03:37:07.487 INFO [stderr] su: No module specific data is present
Dec 13 03:37:08.484 INFO running `"docker" "inspect" "efa670e506ce51790e029df3abecef244504a6305e46f3480bdfef37a491040f"`
Dec 13 03:37:08.719 INFO running `"docker" "rm" "-f" "efa670e506ce51790e029df3abecef244504a6305e46f3480bdfef37a491040f"`
Dec 13 03:37:09.115 INFO [stdout] efa670e506ce51790e029df3abecef244504a6305e46f3480bdfef37a491040f
Dec 13 03:37:09.123 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 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 03:37:09.621 INFO [stdout] aafc8904712a235bf7989e5d821f488758750f4e1d1fa7d551e5613f7d242ef9
Dec 13 03:37:09.624 INFO running `"docker" "start" "-a" "aafc8904712a235bf7989e5d821f488758750f4e1d1fa7d551e5613f7d242ef9"`
Dec 13 03:37:11.387 INFO [stderr] usermod: no changes
Dec 13 03:37:11.427 INFO [stderr]    Compiling rust-hello v0.1.0 (/source)
Dec 13 03:37:11.731 INFO [stderr] warning: unused import: `std::cell::RefCell`
Dec 13 03:37:11.731 INFO [stderr]  --> src/main.rs:8:9
Dec 13 03:37:11.731 INFO [stderr]   |
Dec 13 03:37:11.731 INFO [stderr] 8 |     use std::cell::RefCell;
Dec 13 03:37:11.731 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^
Dec 13 03:37:11.731 INFO [stderr]   |
Dec 13 03:37:11.731 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 03:37:11.731 INFO [stderr] 
Dec 13 03:37:11.731 INFO [stderr] warning: unused import: `Mutex`
Dec 13 03:37:11.731 INFO [stderr]  --> src/main.rs:9:26
Dec 13 03:37:11.731 INFO [stderr]   |
Dec 13 03:37:11.731 INFO [stderr] 9 |     use std::sync::{Arc, Mutex, RwLock};
Dec 13 03:37:11.731 INFO [stderr]   |                          ^^^^^
Dec 13 03:37:11.731 INFO [stderr] 
Dec 13 03:37:11.875 INFO [stderr] warning: unused variable: `data`
Dec 13 03:37:11.875 INFO [stderr]   --> src/main.rs:25:17
Dec 13 03:37:11.875 INFO [stderr]    |
Dec 13 03:37:11.875 INFO [stderr] 25 |             let data = data.read().unwrap();
Dec 13 03:37:11.875 INFO [stderr]    |                 ^^^^ help: consider using `_data` instead
Dec 13 03:37:11.875 INFO [stderr]    |
Dec 13 03:37:11.875 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 03:37:11.875 INFO [stderr] 
Dec 13 03:37:11.895 INFO [stderr] warning: enum is never used: `List`
Dec 13 03:37:11.895 INFO [stderr]  --> src/list.rs:3:1
Dec 13 03:37:11.895 INFO [stderr]   |
Dec 13 03:37:11.895 INFO [stderr] 3 | pub enum List<T> {
Dec 13 03:37:11.895 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 13 03:37:11.895 INFO [stderr]   |
Dec 13 03:37:11.895 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 13 03:37:11.896 INFO [stderr] 
Dec 13 03:37:11.896 INFO [stderr] warning: method is never used: `new`
Dec 13 03:37:11.896 INFO [stderr]  --> src/list.rs:9:5
Dec 13 03:37:11.896 INFO [stderr]   |
Dec 13 03:37:11.896 INFO [stderr] 9 |     pub fn new() -> List<T> { List::Nil }
Dec 13 03:37:11.896 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:11.896 INFO [stderr] 
Dec 13 03:37:11.896 INFO [stderr] warning: method is never used: `cons`
Dec 13 03:37:11.896 INFO [stderr]   --> src/list.rs:11:5
Dec 13 03:37:11.896 INFO [stderr]    |
Dec 13 03:37:11.896 INFO [stderr] 11 |     pub fn cons(self, x: T) -> List<T> { List::Cons(x, Box::new(self)) }
Dec 13 03:37:11.896 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:11.896 INFO [stderr] 
Dec 13 03:37:11.896 INFO [stderr] warning: method is never used: `head`
Dec 13 03:37:11.896 INFO [stderr]   --> src/list.rs:13:5
Dec 13 03:37:11.896 INFO [stderr]    |
Dec 13 03:37:11.896 INFO [stderr] 13 |     pub fn head(self) -> Option<T> {
Dec 13 03:37:11.896 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:11.896 INFO [stderr] 
Dec 13 03:37:11.896 INFO [stderr] warning: method is never used: `tail`
Dec 13 03:37:11.896 INFO [stderr]   --> src/list.rs:20:5
Dec 13 03:37:11.896 INFO [stderr]    |
Dec 13 03:37:11.896 INFO [stderr] 20 |     pub fn tail(&self) -> Option<&List<T>> {
Dec 13 03:37:11.896 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:11.896 INFO [stderr] 
Dec 13 03:37:11.896 INFO [stderr] warning: method is never used: `head_ref`
Dec 13 03:37:11.896 INFO [stderr]   --> src/list.rs:29:5
Dec 13 03:37:11.896 INFO [stderr]    |
Dec 13 03:37:11.896 INFO [stderr] 29 |     pub fn head_ref(&self) -> Option<T> {
Dec 13 03:37:11.896 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:11.896 INFO [stderr] 
Dec 13 03:37:11.896 INFO [stderr] warning: constant item is never used: `N`
Dec 13 03:37:11.896 INFO [stderr]   --> src/main.rs:13:5
Dec 13 03:37:11.896 INFO [stderr]    |
Dec 13 03:37:11.896 INFO [stderr] 13 |     const N: usize = 10;
Dec 13 03:37:11.896 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 13 03:37:11.896 INFO [stderr] 
Dec 13 03:37:11.896 INFO [stderr] warning: function is never used: `test_list`
Dec 13 03:37:11.896 INFO [stderr]   --> src/main.rs:39:1
Dec 13 03:37:11.896 INFO [stderr]    |
Dec 13 03:37:11.896 INFO [stderr] 39 | fn test_list() {
Dec 13 03:37:11.896 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 13 03:37:11.896 INFO [stderr] 
Dec 13 03:37:12.239 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
Dec 13 03:37:12.243 INFO [stderr] su: No module specific data is present
Dec 13 03:37:13.377 INFO running `"docker" "inspect" "aafc8904712a235bf7989e5d821f488758750f4e1d1fa7d551e5613f7d242ef9"`
Dec 13 03:37:13.835 INFO running `"docker" "rm" "-f" "aafc8904712a235bf7989e5d821f488758750f4e1d1fa7d551e5613f7d242ef9"`
Dec 13 03:37:14.161 INFO [stdout] aafc8904712a235bf7989e5d821f488758750f4e1d1fa7d551e5613f7d242ef9
Dec 13 03:37:14.164 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 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 03:37:14.531 INFO [stdout] 50a84a2c9d0c611e48f948ddaa1a436bf655b49d05b89dee7396d64692aedaa8
Dec 13 03:37:14.532 INFO running `"docker" "start" "-a" "50a84a2c9d0c611e48f948ddaa1a436bf655b49d05b89dee7396d64692aedaa8"`
Dec 13 03:37:15.890 INFO [stderr] usermod: no changes
Dec 13 03:37:15.947 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Dec 13 03:37:15.947 INFO [stderr]      Running /target/debug/deps/rust_hello-7ccfef132962ee68
Dec 13 03:37:15.961 INFO [stdout] 
Dec 13 03:37:15.961 INFO [stdout] running 0 tests
Dec 13 03:37:15.961 INFO [stdout] 
Dec 13 03:37:15.961 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 03:37:15.961 INFO [stdout] 
Dec 13 03:37:15.963 INFO [stderr] su: No module specific data is present
Dec 13 03:37:17.070 INFO running `"docker" "inspect" "50a84a2c9d0c611e48f948ddaa1a436bf655b49d05b89dee7396d64692aedaa8"`
Dec 13 03:37:17.336 INFO running `"docker" "rm" "-f" "50a84a2c9d0c611e48f948ddaa1a436bf655b49d05b89dee7396d64692aedaa8"`
Dec 13 03:37:17.695 INFO [stdout] 50a84a2c9d0c611e48f948ddaa1a436bf655b49d05b89dee7396d64692aedaa8