Dec 02 07:33:10.056 INFO testing GHvW/frothy-rs against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 07:33:10.056 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-6/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 07:33:10.542 INFO [stdout] 84c967f6efb20ae6833e28d131aea2bd04e385d6dbb186544077e0c9f42b53e6
Dec 02 07:33:10.547 INFO running `"docker" "start" "-a" "84c967f6efb20ae6833e28d131aea2bd04e385d6dbb186544077e0c9f42b53e6"`
Dec 02 07:33:11.536 INFO [stderr] usermod: no changes
Dec 02 07:33:11.574 INFO [stderr]    Compiling frothy_rs v0.1.0 (/source)
Dec 02 07:33:12.011 INFO [stderr] warning: unused import: `Read`
Dec 02 07:33:12.011 INFO [stderr]  --> src/main.rs:3:22
Dec 02 07:33:12.011 INFO [stderr]   |
Dec 02 07:33:12.011 INFO [stderr] 3 | use std::io::{Write, Read};
Dec 02 07:33:12.011 INFO [stderr]   |                      ^^^^
Dec 02 07:33:12.011 INFO [stderr]   |
Dec 02 07:33:12.011 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 02 07:33:12.011 INFO [stderr] 
Dec 02 07:33:12.051 INFO [stderr] error[E0277]: `impl Stack<String>` doesn't implement `std::fmt::Debug`
Dec 02 07:33:12.051 INFO [stderr]   --> src/main.rs:72:37
Dec 02 07:33:12.051 INFO [stderr]    |
Dec 02 07:33:12.051 INFO [stderr] 72 |     println!("current stack: {:?}", *stack);
Dec 02 07:33:12.051 INFO [stderr]    |                                     ^^^^^^ `impl Stack<String>` cannot be formatted using `{:?}` because it doesn't implement `std::fmt::Debug`
Dec 02 07:33:12.051 INFO [stderr]    |
Dec 02 07:33:12.051 INFO [stderr]    = help: the trait `std::fmt::Debug` is not implemented for `impl Stack<String>`
Dec 02 07:33:12.051 INFO [stderr]    = help: consider adding a `where impl Stack<String>: std::fmt::Debug` bound
Dec 02 07:33:12.051 INFO [stderr]    = note: required by `std::fmt::Debug::fmt`
Dec 02 07:33:12.051 INFO [stderr] 
Dec 02 07:33:12.056 INFO [stderr] error: aborting due to previous error
Dec 02 07:33:12.056 INFO [stderr] 
Dec 02 07:33:12.056 INFO [stderr] For more information about this error, try `rustc --explain E0277`.
Dec 02 07:33:12.063 INFO [stderr] error: Could not compile `frothy_rs`.
Dec 02 07:33:12.063 INFO [stderr] 
Dec 02 07:33:12.063 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 07:33:12.066 INFO [stderr] su: No module specific data is present
Dec 02 07:33:12.370 INFO running `"docker" "inspect" "84c967f6efb20ae6833e28d131aea2bd04e385d6dbb186544077e0c9f42b53e6"`
Dec 02 07:33:12.453 INFO running `"docker" "rm" "-f" "84c967f6efb20ae6833e28d131aea2bd04e385d6dbb186544077e0c9f42b53e6"`
Dec 02 07:33:12.565 INFO [stdout] 84c967f6efb20ae6833e28d131aea2bd04e385d6dbb186544077e0c9f42b53e6