Nov 02 21:51:34.307 INFO checking Ermain-12/Introduction-to-Rust against try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7 for pr-55517
Nov 02 21:51:34.307 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55517/worker-7/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55517/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/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 +dc8b02d6f1e93f212fc39844ea688b634b4a03c7-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 02 21:51:34.872 INFO blam! fbd92422b23c81ffece5e57213f60522561db75a91eaac6eaeb4911b2b322f6c
Nov 02 21:51:34.876 INFO running `"docker" "start" "-a" "fbd92422b23c81ffece5e57213f60522561db75a91eaac6eaeb4911b2b322f6c"`
Nov 02 21:51:36.203 INFO kablam! usermod: no changes
Nov 02 21:51:36.316 INFO kablam!     Checking hello_world v0.1.0 (/source)
Nov 02 21:51:38.000 INFO kablam! warning: variable does not need to be mutable
Nov 02 21:51:38.000 INFO kablam!   --> src/main.rs:27:8
Nov 02 21:51:38.000 INFO kablam!    |
Nov 02 21:51:38.000 INFO kablam! 27 |    let mut twenty_one = my_vec.pop();
Nov 02 21:51:38.000 INFO kablam!    |        ----^^^^^^^^^^
Nov 02 21:51:38.000 INFO kablam!    |        |
Nov 02 21:51:38.000 INFO kablam!    |        help: remove this `mut`
Nov 02 21:51:38.000 INFO kablam!    |
Nov 02 21:51:38.001 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 02 21:51:38.001 INFO kablam! 
Nov 02 21:51:38.412 INFO kablam! warning: variable does not need to be mutable
Nov 02 21:51:38.412 INFO kablam!   --> src/main.rs:27:8
Nov 02 21:51:38.413 INFO kablam!    |
Nov 02 21:51:38.413 INFO kablam! 27 |    let mut twenty_one = my_vec.pop();
Nov 02 21:51:38.413 INFO kablam!    |        ----^^^^^^^^^^
Nov 02 21:51:38.413 INFO kablam!    |        |
Nov 02 21:51:38.413 INFO kablam!    |        help: remove this `mut`
Nov 02 21:51:38.413 INFO kablam!    |
Nov 02 21:51:38.413 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 02 21:51:38.413 INFO kablam! 
Nov 02 21:51:38.450 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.21s
Nov 02 21:51:38.465 INFO kablam! su: No module specific data is present
Nov 02 21:51:39.216 INFO running `"docker" "rm" "-f" "fbd92422b23c81ffece5e57213f60522561db75a91eaac6eaeb4911b2b322f6c"`
Nov 02 21:51:39.520 INFO blam! fbd92422b23c81ffece5e57213f60522561db75a91eaac6eaeb4911b2b322f6c