Nov 01 12:19:35.603 INFO checking Ermain-12/Introduction-to-Rust against master#05812fa8c588473f03e3fa7cf59cd84f4f37c715 for pr-55538
Nov 01 12:19:35.603 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-4/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55538/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/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 +05812fa8c588473f03e3fa7cf59cd84f4f37c715-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 01 12:19:36.020 INFO blam! 9b4a0611c414e18a7d955509588299c8391e2ec75ba3da0c006faa42fccb3414
Nov 01 12:19:36.020 INFO running `"docker" "start" "-a" "9b4a0611c414e18a7d955509588299c8391e2ec75ba3da0c006faa42fccb3414"`
Nov 01 12:19:37.356 INFO kablam! usermod: no changes
Nov 01 12:19:37.477 INFO kablam!     Checking hello_world v0.1.0 (/source)
Nov 01 12:19:38.528 INFO kablam! warning: variable does not need to be mutable
Nov 01 12:19:38.528 INFO kablam!   --> src/main.rs:27:8
Nov 01 12:19:38.528 INFO kablam!    |
Nov 01 12:19:38.528 INFO kablam! 27 |    let mut twenty_one = my_vec.pop();
Nov 01 12:19:38.528 INFO kablam!    |        ----^^^^^^^^^^
Nov 01 12:19:38.528 INFO kablam!    |        |
Nov 01 12:19:38.528 INFO kablam!    |        help: remove this `mut`
Nov 01 12:19:38.528 INFO kablam!    |
Nov 01 12:19:38.528 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 12:19:38.528 INFO kablam! 
Nov 01 12:19:38.577 INFO kablam! warning: variable does not need to be mutable
Nov 01 12:19:38.577 INFO kablam!   --> src/main.rs:27:8
Nov 01 12:19:38.577 INFO kablam!    |
Nov 01 12:19:38.577 INFO kablam! 27 |    let mut twenty_one = my_vec.pop();
Nov 01 12:19:38.577 INFO kablam!    |        ----^^^^^^^^^^
Nov 01 12:19:38.577 INFO kablam!    |        |
Nov 01 12:19:38.577 INFO kablam!    |        help: remove this `mut`
Nov 01 12:19:38.577 INFO kablam!    |
Nov 01 12:19:38.577 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 12:19:38.577 INFO kablam! 
Nov 01 12:19:38.620 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
Nov 01 12:19:38.640 INFO kablam! su: No module specific data is present
Nov 01 12:19:39.251 INFO running `"docker" "rm" "-f" "9b4a0611c414e18a7d955509588299c8391e2ec75ba3da0c006faa42fccb3414"`
Nov 01 12:19:39.385 INFO blam! 9b4a0611c414e18a7d955509588299c8391e2ec75ba3da0c006faa42fccb3414