Nov 04 13:54:57.809 INFO checking Ermain-12/Introduction-to-Rust against master#2ad8c7b3502616aff142a4640cce911c6c2c5463 for pr-55655
Nov 04 13:54:57.809 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-4/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55655/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/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 +2ad8c7b3502616aff142a4640cce911c6c2c5463-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 04 13:54:58.093 INFO blam! 30b279ba19df178154823b0576c30bfee218029c0f9c0a4ce26efa9f2f833813
Nov 04 13:54:58.095 INFO running `"docker" "start" "-a" "30b279ba19df178154823b0576c30bfee218029c0f9c0a4ce26efa9f2f833813"`
Nov 04 13:54:58.987 INFO kablam! usermod: no changes
Nov 04 13:54:59.103 INFO kablam!     Checking hello_world v0.1.0 (/source)
Nov 04 13:55:00.007 INFO kablam! warning: variable does not need to be mutable
Nov 04 13:55:00.007 INFO kablam!   --> src/main.rs:27:8
Nov 04 13:55:00.007 INFO kablam!    |
Nov 04 13:55:00.007 INFO kablam! 27 |    let mut twenty_one = my_vec.pop();
Nov 04 13:55:00.007 INFO kablam!    |        ----^^^^^^^^^^
Nov 04 13:55:00.007 INFO kablam!    |        |
Nov 04 13:55:00.007 INFO kablam!    |        help: remove this `mut`
Nov 04 13:55:00.007 INFO kablam!    |
Nov 04 13:55:00.007 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 04 13:55:00.007 INFO kablam! 
Nov 04 13:55:00.107 INFO kablam! warning: variable does not need to be mutable
Nov 04 13:55:00.107 INFO kablam!   --> src/main.rs:27:8
Nov 04 13:55:00.107 INFO kablam!    |
Nov 04 13:55:00.107 INFO kablam! 27 |    let mut twenty_one = my_vec.pop();
Nov 04 13:55:00.107 INFO kablam!    |        ----^^^^^^^^^^
Nov 04 13:55:00.107 INFO kablam!    |        |
Nov 04 13:55:00.107 INFO kablam!    |        help: remove this `mut`
Nov 04 13:55:00.107 INFO kablam!    |
Nov 04 13:55:00.107 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 04 13:55:00.107 INFO kablam! 
Nov 04 13:55:00.111 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
Nov 04 13:55:00.119 INFO kablam! su: No module specific data is present
Nov 04 13:55:00.575 INFO running `"docker" "rm" "-f" "30b279ba19df178154823b0576c30bfee218029c0f9c0a4ce26efa9f2f833813"`
Nov 04 13:55:00.751 INFO blam! 30b279ba19df178154823b0576c30bfee218029c0f9c0a4ce26efa9f2f833813