Nov 16 13:45:24.740 INFO testing shanemikel/rust-hello against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 16 13:45:24.741 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 16 13:45:25.356 INFO [stdout] a2a7277c1b3ad7801785c8770b4fd8504f03770e9beec19835dcfe8b7565c077
Nov 16 13:45:25.358 INFO running `"docker" "start" "-a" "a2a7277c1b3ad7801785c8770b4fd8504f03770e9beec19835dcfe8b7565c077"`
Nov 16 13:45:26.950 INFO [stderr] usermod: no changes
Nov 16 13:45:27.019 INFO [stderr]    Compiling rust-hello v0.1.0 (/source)
Nov 16 13:45:27.207 INFO [stderr] warning: unused import: `std::cell::RefCell`
Nov 16 13:45:27.207 INFO [stderr]  --> src/main.rs:8:9
Nov 16 13:45:27.207 INFO [stderr]   |
Nov 16 13:45:27.207 INFO [stderr] 8 |     use std::cell::RefCell;
Nov 16 13:45:27.207 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^
Nov 16 13:45:27.207 INFO [stderr]   |
Nov 16 13:45:27.207 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 16 13:45:27.207 INFO [stderr] 
Nov 16 13:45:27.207 INFO [stderr] warning: unused import: `Mutex`
Nov 16 13:45:27.207 INFO [stderr]  --> src/main.rs:9:26
Nov 16 13:45:27.207 INFO [stderr]   |
Nov 16 13:45:27.207 INFO [stderr] 9 |     use std::sync::{Arc, Mutex, RwLock};
Nov 16 13:45:27.207 INFO [stderr]   |                          ^^^^^
Nov 16 13:45:27.207 INFO [stderr] 
Nov 16 13:45:27.339 INFO [stderr] warning: unused variable: `data`
Nov 16 13:45:27.339 INFO [stderr]   --> src/main.rs:25:17
Nov 16 13:45:27.339 INFO [stderr]    |
Nov 16 13:45:27.339 INFO [stderr] 25 |             let data = data.read().unwrap();
Nov 16 13:45:27.339 INFO [stderr]    |                 ^^^^ help: consider using `_data` instead
Nov 16 13:45:27.339 INFO [stderr]    |
Nov 16 13:45:27.339 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 16 13:45:27.339 INFO [stderr] 
Nov 16 13:45:27.361 INFO [stderr] warning: enum is never used: `List`
Nov 16 13:45:27.361 INFO [stderr]  --> src/list.rs:3:1
Nov 16 13:45:27.361 INFO [stderr]   |
Nov 16 13:45:27.361 INFO [stderr] 3 | pub enum List<T> {
Nov 16 13:45:27.361 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Nov 16 13:45:27.361 INFO [stderr]   |
Nov 16 13:45:27.361 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 16 13:45:27.361 INFO [stderr] 
Nov 16 13:45:27.361 INFO [stderr] warning: method is never used: `new`
Nov 16 13:45:27.361 INFO [stderr]  --> src/list.rs:9:5
Nov 16 13:45:27.361 INFO [stderr]   |
Nov 16 13:45:27.361 INFO [stderr] 9 |     pub fn new() -> List<T> { List::Nil }
Nov 16 13:45:27.361 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:27.361 INFO [stderr] 
Nov 16 13:45:27.361 INFO [stderr] warning: method is never used: `cons`
Nov 16 13:45:27.361 INFO [stderr]   --> src/list.rs:11:5
Nov 16 13:45:27.361 INFO [stderr]    |
Nov 16 13:45:27.361 INFO [stderr] 11 |     pub fn cons(self, x: T) -> List<T> { List::Cons(x, Box::new(self)) }
Nov 16 13:45:27.361 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:27.361 INFO [stderr] 
Nov 16 13:45:27.361 INFO [stderr] warning: method is never used: `head`
Nov 16 13:45:27.361 INFO [stderr]   --> src/list.rs:13:5
Nov 16 13:45:27.361 INFO [stderr]    |
Nov 16 13:45:27.361 INFO [stderr] 13 |     pub fn head(self) -> Option<T> {
Nov 16 13:45:27.361 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:27.361 INFO [stderr] 
Nov 16 13:45:27.361 INFO [stderr] warning: method is never used: `tail`
Nov 16 13:45:27.361 INFO [stderr]   --> src/list.rs:20:5
Nov 16 13:45:27.361 INFO [stderr]    |
Nov 16 13:45:27.361 INFO [stderr] 20 |     pub fn tail(&self) -> Option<&List<T>> {
Nov 16 13:45:27.361 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:27.361 INFO [stderr] 
Nov 16 13:45:27.361 INFO [stderr] warning: method is never used: `head_ref`
Nov 16 13:45:27.361 INFO [stderr]   --> src/list.rs:29:5
Nov 16 13:45:27.361 INFO [stderr]    |
Nov 16 13:45:27.361 INFO [stderr] 29 |     pub fn head_ref(&self) -> Option<T> {
Nov 16 13:45:27.361 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:27.361 INFO [stderr] 
Nov 16 13:45:27.361 INFO [stderr] warning: constant item is never used: `N`
Nov 16 13:45:27.361 INFO [stderr]   --> src/main.rs:13:5
Nov 16 13:45:27.361 INFO [stderr]    |
Nov 16 13:45:27.361 INFO [stderr] 13 |     const N: usize = 10;
Nov 16 13:45:27.361 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:27.361 INFO [stderr] 
Nov 16 13:45:27.361 INFO [stderr] warning: function is never used: `test_list`
Nov 16 13:45:27.361 INFO [stderr]   --> src/main.rs:39:1
Nov 16 13:45:27.361 INFO [stderr]    |
Nov 16 13:45:27.362 INFO [stderr] 39 | fn test_list() {
Nov 16 13:45:27.362 INFO [stderr]    | ^^^^^^^^^^^^^^
Nov 16 13:45:27.362 INFO [stderr] 
Nov 16 13:45:28.688 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
Nov 16 13:45:28.690 INFO [stderr] su: No module specific data is present
Nov 16 13:45:30.197 INFO running `"docker" "inspect" "a2a7277c1b3ad7801785c8770b4fd8504f03770e9beec19835dcfe8b7565c077"`
Nov 16 13:45:30.523 INFO running `"docker" "rm" "-f" "a2a7277c1b3ad7801785c8770b4fd8504f03770e9beec19835dcfe8b7565c077"`
Nov 16 13:45:30.935 INFO [stdout] a2a7277c1b3ad7801785c8770b4fd8504f03770e9beec19835dcfe8b7565c077
Nov 16 13:45:30.943 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 16 13:45:31.715 INFO [stdout] 571bcf64fb7e53aa9344899ae8417346a3f224e8c9b2d50b4557f76031574b33
Nov 16 13:45:31.717 INFO running `"docker" "start" "-a" "571bcf64fb7e53aa9344899ae8417346a3f224e8c9b2d50b4557f76031574b33"`
Nov 16 13:45:33.363 INFO [stderr] usermod: no changes
Nov 16 13:45:33.419 INFO [stderr]    Compiling rust-hello v0.1.0 (/source)
Nov 16 13:45:33.699 INFO [stderr] warning: unused import: `std::cell::RefCell`
Nov 16 13:45:33.699 INFO [stderr]  --> src/main.rs:8:9
Nov 16 13:45:33.699 INFO [stderr]   |
Nov 16 13:45:33.699 INFO [stderr] 8 |     use std::cell::RefCell;
Nov 16 13:45:33.699 INFO [stderr]   |         ^^^^^^^^^^^^^^^^^^
Nov 16 13:45:33.699 INFO [stderr]   |
Nov 16 13:45:33.699 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 16 13:45:33.699 INFO [stderr] 
Nov 16 13:45:33.699 INFO [stderr] warning: unused import: `Mutex`
Nov 16 13:45:33.699 INFO [stderr]  --> src/main.rs:9:26
Nov 16 13:45:33.699 INFO [stderr]   |
Nov 16 13:45:33.699 INFO [stderr] 9 |     use std::sync::{Arc, Mutex, RwLock};
Nov 16 13:45:33.699 INFO [stderr]   |                          ^^^^^
Nov 16 13:45:33.699 INFO [stderr] 
Nov 16 13:45:33.807 INFO [stderr] warning: unused variable: `data`
Nov 16 13:45:33.807 INFO [stderr]   --> src/main.rs:25:17
Nov 16 13:45:33.807 INFO [stderr]    |
Nov 16 13:45:33.807 INFO [stderr] 25 |             let data = data.read().unwrap();
Nov 16 13:45:33.807 INFO [stderr]    |                 ^^^^ help: consider using `_data` instead
Nov 16 13:45:33.807 INFO [stderr]    |
Nov 16 13:45:33.807 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 16 13:45:33.807 INFO [stderr] 
Nov 16 13:45:33.823 INFO [stderr] warning: enum is never used: `List`
Nov 16 13:45:33.823 INFO [stderr]  --> src/list.rs:3:1
Nov 16 13:45:33.823 INFO [stderr]   |
Nov 16 13:45:33.823 INFO [stderr] 3 | pub enum List<T> {
Nov 16 13:45:33.823 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Nov 16 13:45:33.823 INFO [stderr]   |
Nov 16 13:45:33.823 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 16 13:45:33.823 INFO [stderr] 
Nov 16 13:45:33.823 INFO [stderr] warning: method is never used: `new`
Nov 16 13:45:33.823 INFO [stderr]  --> src/list.rs:9:5
Nov 16 13:45:33.823 INFO [stderr]   |
Nov 16 13:45:33.823 INFO [stderr] 9 |     pub fn new() -> List<T> { List::Nil }
Nov 16 13:45:33.823 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:33.823 INFO [stderr] 
Nov 16 13:45:33.823 INFO [stderr] warning: method is never used: `cons`
Nov 16 13:45:33.823 INFO [stderr]   --> src/list.rs:11:5
Nov 16 13:45:33.823 INFO [stderr]    |
Nov 16 13:45:33.823 INFO [stderr] 11 |     pub fn cons(self, x: T) -> List<T> { List::Cons(x, Box::new(self)) }
Nov 16 13:45:33.823 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:33.823 INFO [stderr] 
Nov 16 13:45:33.823 INFO [stderr] warning: method is never used: `head`
Nov 16 13:45:33.823 INFO [stderr]   --> src/list.rs:13:5
Nov 16 13:45:33.823 INFO [stderr]    |
Nov 16 13:45:33.823 INFO [stderr] 13 |     pub fn head(self) -> Option<T> {
Nov 16 13:45:33.823 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:33.823 INFO [stderr] 
Nov 16 13:45:33.823 INFO [stderr] warning: method is never used: `tail`
Nov 16 13:45:33.823 INFO [stderr]   --> src/list.rs:20:5
Nov 16 13:45:33.823 INFO [stderr]    |
Nov 16 13:45:33.823 INFO [stderr] 20 |     pub fn tail(&self) -> Option<&List<T>> {
Nov 16 13:45:33.823 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:33.823 INFO [stderr] 
Nov 16 13:45:33.823 INFO [stderr] warning: method is never used: `head_ref`
Nov 16 13:45:33.823 INFO [stderr]   --> src/list.rs:29:5
Nov 16 13:45:33.823 INFO [stderr]    |
Nov 16 13:45:33.823 INFO [stderr] 29 |     pub fn head_ref(&self) -> Option<T> {
Nov 16 13:45:33.823 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:33.823 INFO [stderr] 
Nov 16 13:45:33.823 INFO [stderr] warning: constant item is never used: `N`
Nov 16 13:45:33.823 INFO [stderr]   --> src/main.rs:13:5
Nov 16 13:45:33.823 INFO [stderr]    |
Nov 16 13:45:33.823 INFO [stderr] 13 |     const N: usize = 10;
Nov 16 13:45:33.823 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Nov 16 13:45:33.823 INFO [stderr] 
Nov 16 13:45:33.823 INFO [stderr] warning: function is never used: `test_list`
Nov 16 13:45:33.824 INFO [stderr]   --> src/main.rs:39:1
Nov 16 13:45:33.824 INFO [stderr]    |
Nov 16 13:45:33.824 INFO [stderr] 39 | fn test_list() {
Nov 16 13:45:33.824 INFO [stderr]    | ^^^^^^^^^^^^^^
Nov 16 13:45:33.824 INFO [stderr] 
Nov 16 13:45:34.299 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
Nov 16 13:45:34.299 INFO [stderr] su: No module specific data is present
Nov 16 13:45:35.599 INFO running `"docker" "inspect" "571bcf64fb7e53aa9344899ae8417346a3f224e8c9b2d50b4557f76031574b33"`
Nov 16 13:45:35.979 INFO running `"docker" "rm" "-f" "571bcf64fb7e53aa9344899ae8417346a3f224e8c9b2d50b4557f76031574b33"`
Nov 16 13:45:36.317 INFO [stdout] 571bcf64fb7e53aa9344899ae8417346a3f224e8c9b2d50b4557f76031574b33
Nov 16 13:45:36.323 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 16 13:45:36.795 INFO [stdout] def21c355fe96c3170d44f122c9664cb08049913914a460586495daa99183606
Nov 16 13:45:36.798 INFO running `"docker" "start" "-a" "def21c355fe96c3170d44f122c9664cb08049913914a460586495daa99183606"`
Nov 16 13:45:38.814 INFO [stderr] usermod: no changes
Nov 16 13:45:38.915 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Nov 16 13:45:38.916 INFO [stderr]      Running /target/debug/deps/rust_hello-940f4136906955da
Nov 16 13:45:38.927 INFO [stderr] su: No module specific data is present
Nov 16 13:45:38.927 INFO [stdout] 
Nov 16 13:45:38.928 INFO [stdout] running 0 tests
Nov 16 13:45:38.928 INFO [stdout] 
Nov 16 13:45:38.928 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 13:45:38.929 INFO [stdout] 
Nov 16 13:45:40.371 INFO running `"docker" "inspect" "def21c355fe96c3170d44f122c9664cb08049913914a460586495daa99183606"`
Nov 16 13:45:40.691 INFO running `"docker" "rm" "-f" "def21c355fe96c3170d44f122c9664cb08049913914a460586495daa99183606"`
Nov 16 13:45:41.041 INFO [stdout] def21c355fe96c3170d44f122c9664cb08049913914a460586495daa99183606