Nov 01 12:19:35.024 INFO checking Ermain-12/Introduction-to-Rust against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 12:19:35.024 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-2/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 12:19:35.380 INFO blam! 6bbebdea72e539cbc01a6e165066c9d24c1418c71148ee17b251d3c8ddab8ef4
Nov 01 12:19:35.388 INFO running `"docker" "start" "-a" "6bbebdea72e539cbc01a6e165066c9d24c1418c71148ee17b251d3c8ddab8ef4"`
Nov 01 12:19:36.524 INFO kablam! usermod: no changes
Nov 01 12:19:36.616 INFO kablam!     Checking hello_world v0.1.0 (/source)
Nov 01 12:19:37.822 INFO kablam! warning: variable does not need to be mutable
Nov 01 12:19:37.822 INFO kablam!   --> src/main.rs:27:8
Nov 01 12:19:37.822 INFO kablam!    |
Nov 01 12:19:37.823 INFO kablam! 27 |    let mut twenty_one = my_vec.pop();
Nov 01 12:19:37.823 INFO kablam!    |        ----^^^^^^^^^^
Nov 01 12:19:37.823 INFO kablam!    |        |
Nov 01 12:19:37.823 INFO kablam!    |        help: remove this `mut`
Nov 01 12:19:37.823 INFO kablam!    |
Nov 01 12:19:37.823 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 12:19:37.823 INFO kablam! 
Nov 01 12:19:37.966 INFO kablam! warning: variable does not need to be mutable
Nov 01 12:19:37.966 INFO kablam!   --> src/main.rs:27:8
Nov 01 12:19:37.966 INFO kablam!    |
Nov 01 12:19:37.966 INFO kablam! 27 |    let mut twenty_one = my_vec.pop();
Nov 01 12:19:37.966 INFO kablam!    |        ----^^^^^^^^^^
Nov 01 12:19:37.966 INFO kablam!    |        |
Nov 01 12:19:37.966 INFO kablam!    |        help: remove this `mut`
Nov 01 12:19:37.966 INFO kablam!    |
Nov 01 12:19:37.966 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 12:19:37.966 INFO kablam! 
Nov 01 12:19:37.993 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
Nov 01 12:19:37.997 INFO kablam! su: No module specific data is present
Nov 01 12:19:38.614 INFO running `"docker" "rm" "-f" "6bbebdea72e539cbc01a6e165066c9d24c1418c71148ee17b251d3c8ddab8ef4"`
Nov 01 12:19:38.953 INFO blam! 6bbebdea72e539cbc01a6e165066c9d24c1418c71148ee17b251d3c8ddab8ef4