Nov 07 05:02:19.999 INFO checking Ermain-12/Introduction-to-Rust against master#24e66c28980442a48d9458f1a4f9b76cc722dc8a for pr-55687
Nov 07 05:02:19.999 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55687/worker-4/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55687/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/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 +24e66c28980442a48d9458f1a4f9b76cc722dc8a-alt check --frozen --all --all-targets" "-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 07 05:02:20.488 INFO blam! c3b4ad5fe04cd04b7a8d14d3ba46bd9b45f863c2adb76abffa152de929d5f816
Nov 07 05:02:20.492 INFO running `"docker" "start" "-a" "c3b4ad5fe04cd04b7a8d14d3ba46bd9b45f863c2adb76abffa152de929d5f816"`
Nov 07 05:02:21.675 INFO kablam! usermod: no changes
Nov 07 05:02:21.844 INFO kablam!     Checking hello_world v0.1.0 (/source)
Nov 07 05:02:23.528 INFO kablam! warning: variable does not need to be mutable
Nov 07 05:02:23.528 INFO kablam!   --> src/main.rs:27:8
Nov 07 05:02:23.528 INFO kablam!    |
Nov 07 05:02:23.528 INFO kablam! 27 |    let mut twenty_one = my_vec.pop();
Nov 07 05:02:23.528 INFO kablam!    |        ----^^^^^^^^^^
Nov 07 05:02:23.528 INFO kablam!    |        |
Nov 07 05:02:23.528 INFO kablam!    |        help: remove this `mut`
Nov 07 05:02:23.528 INFO kablam!    |
Nov 07 05:02:23.528 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 07 05:02:23.528 INFO kablam! 
Nov 07 05:02:23.736 INFO kablam! warning: variable does not need to be mutable
Nov 07 05:02:23.736 INFO kablam!   --> src/main.rs:27:8
Nov 07 05:02:23.736 INFO kablam!    |
Nov 07 05:02:23.736 INFO kablam! 27 |    let mut twenty_one = my_vec.pop();
Nov 07 05:02:23.736 INFO kablam!    |        ----^^^^^^^^^^
Nov 07 05:02:23.736 INFO kablam!    |        |
Nov 07 05:02:23.736 INFO kablam!    |        help: remove this `mut`
Nov 07 05:02:23.736 INFO kablam!    |
Nov 07 05:02:23.736 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 07 05:02:23.736 INFO kablam! 
Nov 07 05:02:23.769 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.07s
Nov 07 05:02:23.774 INFO kablam! su: No module specific data is present
Nov 07 05:02:24.416 INFO running `"docker" "rm" "-f" "c3b4ad5fe04cd04b7a8d14d3ba46bd9b45f863c2adb76abffa152de929d5f816"`
Nov 07 05:02:24.776 INFO blam! c3b4ad5fe04cd04b7a8d14d3ba46bd9b45f863c2adb76abffa152de929d5f816