Nov 01 12:59:12.578 INFO checking BenjaminGuenin/rust-programming-tutorial against master#05812fa8c588473f03e3fa7cf59cd84f4f37c715 for pr-55538
Nov 01 12:59:12.581 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-5/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 12:59:12.867 INFO blam! 51c6fdd2a65ae7185dce3dfc82e14eada1cb800ab12e0c31b067db3bcbb2ee8b
Nov 01 12:59:12.869 INFO running `"docker" "start" "-a" "51c6fdd2a65ae7185dce3dfc82e14eada1cb800ab12e0c31b067db3bcbb2ee8b"`
Nov 01 12:59:13.360 INFO kablam! usermod: no changes
Nov 01 12:59:13.400 INFO kablam!     Checking rust-programming-tutorial v0.1.0 (/source)
Nov 01 12:59:13.816 INFO kablam! warning: unused variable: `immutable_string`
Nov 01 12:59:13.817 INFO kablam!  --> src/main.rs:3:9
Nov 01 12:59:13.817 INFO kablam!   |
Nov 01 12:59:13.817 INFO kablam! 3 |     let immutable_string = "hello"; // cannot be modified - stored on the stack
Nov 01 12:59:13.818 INFO kablam!   |         ^^^^^^^^^^^^^^^^ help: consider using `_immutable_string` instead
Nov 01 12:59:13.818 INFO kablam!   |
Nov 01 12:59:13.818 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 01 12:59:13.818 INFO kablam! 
Nov 01 12:59:13.819 INFO kablam! warning: unused variable: `s`
Nov 01 12:59:13.819 INFO kablam!   --> src/main.rs:11:13
Nov 01 12:59:13.819 INFO kablam!    |
Nov 01 12:59:13.820 INFO kablam! 11 |         let s = String::from("hello"); // s is valid from this point forward
Nov 01 12:59:13.820 INFO kablam!    |             ^ help: consider using `_s` instead
Nov 01 12:59:13.820 INFO kablam! 
Nov 01 12:59:13.936 INFO kablam! warning: unused variable: `immutable_string`
Nov 01 12:59:13.936 INFO kablam!  --> src/main.rs:3:9
Nov 01 12:59:13.936 INFO kablam!   |
Nov 01 12:59:13.936 INFO kablam! 3 |     let immutable_string = "hello"; // cannot be modified - stored on the stack
Nov 01 12:59:13.936 INFO kablam!   |         ^^^^^^^^^^^^^^^^ help: consider using `_immutable_string` instead
Nov 01 12:59:13.936 INFO kablam!   |
Nov 01 12:59:13.936 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 01 12:59:13.936 INFO kablam! 
Nov 01 12:59:13.936 INFO kablam! warning: unused variable: `s`
Nov 01 12:59:13.936 INFO kablam!   --> src/main.rs:11:13
Nov 01 12:59:13.936 INFO kablam!    |
Nov 01 12:59:13.936 INFO kablam! 11 |         let s = String::from("hello"); // s is valid from this point forward
Nov 01 12:59:13.936 INFO kablam!    |             ^ help: consider using `_s` instead
Nov 01 12:59:13.936 INFO kablam! 
Nov 01 12:59:13.952 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Nov 01 12:59:13.958 INFO kablam! su: No module specific data is present
Nov 01 12:59:14.252 INFO running `"docker" "rm" "-f" "51c6fdd2a65ae7185dce3dfc82e14eada1cb800ab12e0c31b067db3bcbb2ee8b"`
Nov 01 12:59:14.390 INFO blam! 51c6fdd2a65ae7185dce3dfc82e14eada1cb800ab12e0c31b067db3bcbb2ee8b