Oct 12 20:50:52.713 INFO checking hardvain/rust-practice against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 20:50:52.713 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-4/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 20:50:53.117 INFO blam! 812cf3d9842452a0132fc8b6aa973dad21900c8e854df836875e04e8c53898d5
Oct 12 20:50:53.118 INFO running `"docker" "start" "-a" "812cf3d9842452a0132fc8b6aa973dad21900c8e854df836875e04e8c53898d5"`
Oct 12 20:50:54.088 INFO kablam! usermod: no changes
Oct 12 20:50:54.156 INFO kablam!     Checking practice v0.1.0 (/source)
Oct 12 20:50:54.648 INFO kablam! warning: unused variable: `sample`
Oct 12 20:50:54.648 INFO kablam!  --> src/main.rs:9:24
Oct 12 20:50:54.648 INFO kablam!   |
Oct 12 20:50:54.648 INFO kablam! 9 | fn taking_owned_sample(sample: Sample) {}
Oct 12 20:50:54.648 INFO kablam!   |                        ^^^^^^ help: consider using `_sample` instead
Oct 12 20:50:54.648 INFO kablam!   |
Oct 12 20:50:54.648 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 12 20:50:54.648 INFO kablam! 
Oct 12 20:50:54.648 INFO kablam! warning: unused variable: `sample`
Oct 12 20:50:54.648 INFO kablam!   --> src/main.rs:10:25
Oct 12 20:50:54.648 INFO kablam!    |
Oct 12 20:50:54.648 INFO kablam! 10 | fn taking_shared_sample(sample: &Sample) {}
Oct 12 20:50:54.648 INFO kablam!    |                         ^^^^^^ help: consider using `_sample` instead
Oct 12 20:50:54.649 INFO kablam! 
Oct 12 20:50:54.649 INFO kablam! warning: unused variable: `sample`
Oct 12 20:50:54.649 INFO kablam!   --> src/main.rs:11:26
Oct 12 20:50:54.649 INFO kablam!    |
Oct 12 20:50:54.649 INFO kablam! 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Oct 12 20:50:54.649 INFO kablam!    |                          ^^^^^^ help: consider using `_sample` instead
Oct 12 20:50:54.649 INFO kablam! 
Oct 12 20:50:54.649 INFO kablam! warning: unused variable: `sample`
Oct 12 20:50:54.649 INFO kablam!   --> src/main.rs:37:9
Oct 12 20:50:54.649 INFO kablam!    |
Oct 12 20:50:54.649 INFO kablam! 37 |     let sample = Sample { key: 1 };
Oct 12 20:50:54.649 INFO kablam!    |         ^^^^^^ help: consider using `_sample` instead
Oct 12 20:50:54.649 INFO kablam! 
Oct 12 20:50:54.652 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.652 INFO kablam!   --> src/main.rs:44:9
Oct 12 20:50:54.652 INFO kablam!    |
Oct 12 20:50:54.652 INFO kablam! 44 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.652 INFO kablam!    |         ----^^^^^^
Oct 12 20:50:54.652 INFO kablam!    |         |
Oct 12 20:50:54.652 INFO kablam!    |         help: remove this `mut`
Oct 12 20:50:54.652 INFO kablam!    |
Oct 12 20:50:54.652 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 20:50:54.652 INFO kablam! 
Oct 12 20:50:54.653 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.653 INFO kablam!   --> src/main.rs:60:9
Oct 12 20:50:54.653 INFO kablam!    |
Oct 12 20:50:54.653 INFO kablam! 60 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.653 INFO kablam!    |         ----^^^^^^
Oct 12 20:50:54.653 INFO kablam!    |         |
Oct 12 20:50:54.653 INFO kablam!    |         help: remove this `mut`
Oct 12 20:50:54.653 INFO kablam! 
Oct 12 20:50:54.653 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.653 INFO kablam!    --> src/main.rs:113:9
Oct 12 20:50:54.653 INFO kablam!     |
Oct 12 20:50:54.653 INFO kablam! 113 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.653 INFO kablam!     |         ----^^^^^^
Oct 12 20:50:54.653 INFO kablam!     |         |
Oct 12 20:50:54.653 INFO kablam!     |         help: remove this `mut`
Oct 12 20:50:54.653 INFO kablam! 
Oct 12 20:50:54.653 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.653 INFO kablam!    --> src/main.rs:121:9
Oct 12 20:50:54.653 INFO kablam!     |
Oct 12 20:50:54.653 INFO kablam! 121 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.653 INFO kablam!     |         ----^^^^^^
Oct 12 20:50:54.653 INFO kablam!     |         |
Oct 12 20:50:54.653 INFO kablam!     |         help: remove this `mut`
Oct 12 20:50:54.653 INFO kablam! 
Oct 12 20:50:54.653 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.653 INFO kablam!    --> src/main.rs:130:9
Oct 12 20:50:54.653 INFO kablam!     |
Oct 12 20:50:54.653 INFO kablam! 130 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.653 INFO kablam!     |         ----^^^^^^
Oct 12 20:50:54.653 INFO kablam!     |         |
Oct 12 20:50:54.653 INFO kablam!     |         help: remove this `mut`
Oct 12 20:50:54.653 INFO kablam! 
Oct 12 20:50:54.653 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.653 INFO kablam!    --> src/main.rs:137:9
Oct 12 20:50:54.653 INFO kablam!     |
Oct 12 20:50:54.653 INFO kablam! 137 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.653 INFO kablam!     |         ----^^^^^^
Oct 12 20:50:54.653 INFO kablam!     |         |
Oct 12 20:50:54.653 INFO kablam!     |         help: remove this `mut`
Oct 12 20:50:54.653 INFO kablam! 
Oct 12 20:50:54.653 INFO kablam! warning: field is never used: `key`
Oct 12 20:50:54.653 INFO kablam!  --> src/main.rs:2:3
Oct 12 20:50:54.653 INFO kablam!   |
Oct 12 20:50:54.653 INFO kablam! 2 |   key: i32,
Oct 12 20:50:54.653 INFO kablam!   |   ^^^^^^^^
Oct 12 20:50:54.653 INFO kablam!   |
Oct 12 20:50:54.653 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 20:50:54.653 INFO kablam! 
Oct 12 20:50:54.653 INFO kablam! warning: function is never used: `taking_mutable_sample`
Oct 12 20:50:54.653 INFO kablam!   --> src/main.rs:11:1
Oct 12 20:50:54.653 INFO kablam!    |
Oct 12 20:50:54.653 INFO kablam! 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Oct 12 20:50:54.653 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:50:54.653 INFO kablam! 
Oct 12 20:50:54.653 INFO kablam! warning: function is never used: `mutable_binding_function_calls`
Oct 12 20:50:54.653 INFO kablam!   --> src/main.rs:42:1
Oct 12 20:50:54.653 INFO kablam!    |
Oct 12 20:50:54.653 INFO kablam! 42 | fn mutable_binding_function_calls() {
Oct 12 20:50:54.653 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:50:54.653 INFO kablam! 
Oct 12 20:50:54.926 INFO kablam! warning: unused variable: `sample`
Oct 12 20:50:54.926 INFO kablam!  --> src/main.rs:9:24
Oct 12 20:50:54.926 INFO kablam!   |
Oct 12 20:50:54.926 INFO kablam! 9 | fn taking_owned_sample(sample: Sample) {}
Oct 12 20:50:54.926 INFO kablam!   |                        ^^^^^^ help: consider using `_sample` instead
Oct 12 20:50:54.926 INFO kablam!   |
Oct 12 20:50:54.927 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 12 20:50:54.927 INFO kablam! 
Oct 12 20:50:54.927 INFO kablam! warning: unused variable: `sample`
Oct 12 20:50:54.927 INFO kablam!   --> src/main.rs:10:25
Oct 12 20:50:54.927 INFO kablam!    |
Oct 12 20:50:54.927 INFO kablam! 10 | fn taking_shared_sample(sample: &Sample) {}
Oct 12 20:50:54.927 INFO kablam!    |                         ^^^^^^ help: consider using `_sample` instead
Oct 12 20:50:54.927 INFO kablam! 
Oct 12 20:50:54.927 INFO kablam! warning: unused variable: `sample`
Oct 12 20:50:54.927 INFO kablam!   --> src/main.rs:11:26
Oct 12 20:50:54.927 INFO kablam!    |
Oct 12 20:50:54.927 INFO kablam! 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Oct 12 20:50:54.927 INFO kablam!    |                          ^^^^^^ help: consider using `_sample` instead
Oct 12 20:50:54.927 INFO kablam! 
Oct 12 20:50:54.927 INFO kablam! warning: unused variable: `sample`
Oct 12 20:50:54.927 INFO kablam!   --> src/main.rs:37:9
Oct 12 20:50:54.927 INFO kablam!    |
Oct 12 20:50:54.927 INFO kablam! 37 |     let sample = Sample { key: 1 };
Oct 12 20:50:54.927 INFO kablam!    |         ^^^^^^ help: consider using `_sample` instead
Oct 12 20:50:54.927 INFO kablam! 
Oct 12 20:50:54.930 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.930 INFO kablam!   --> src/main.rs:44:9
Oct 12 20:50:54.930 INFO kablam!    |
Oct 12 20:50:54.930 INFO kablam! 44 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.930 INFO kablam!    |         ----^^^^^^
Oct 12 20:50:54.930 INFO kablam!    |         |
Oct 12 20:50:54.930 INFO kablam!    |         help: remove this `mut`
Oct 12 20:50:54.930 INFO kablam!    |
Oct 12 20:50:54.930 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 20:50:54.930 INFO kablam! 
Oct 12 20:50:54.930 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.930 INFO kablam!   --> src/main.rs:60:9
Oct 12 20:50:54.930 INFO kablam!    |
Oct 12 20:50:54.930 INFO kablam! 60 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.930 INFO kablam!    |         ----^^^^^^
Oct 12 20:50:54.930 INFO kablam!    |         |
Oct 12 20:50:54.930 INFO kablam!    |         help: remove this `mut`
Oct 12 20:50:54.930 INFO kablam! 
Oct 12 20:50:54.930 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.930 INFO kablam!    --> src/main.rs:113:9
Oct 12 20:50:54.930 INFO kablam!     |
Oct 12 20:50:54.930 INFO kablam! 113 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.930 INFO kablam!     |         ----^^^^^^
Oct 12 20:50:54.930 INFO kablam!     |         |
Oct 12 20:50:54.930 INFO kablam!     |         help: remove this `mut`
Oct 12 20:50:54.930 INFO kablam! 
Oct 12 20:50:54.930 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.930 INFO kablam!    --> src/main.rs:121:9
Oct 12 20:50:54.930 INFO kablam!     |
Oct 12 20:50:54.930 INFO kablam! 121 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.930 INFO kablam!     |         ----^^^^^^
Oct 12 20:50:54.930 INFO kablam!     |         |
Oct 12 20:50:54.930 INFO kablam!     |         help: remove this `mut`
Oct 12 20:50:54.930 INFO kablam! 
Oct 12 20:50:54.930 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.930 INFO kablam!    --> src/main.rs:130:9
Oct 12 20:50:54.930 INFO kablam!     |
Oct 12 20:50:54.930 INFO kablam! 130 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.930 INFO kablam!     |         ----^^^^^^
Oct 12 20:50:54.931 INFO kablam!     |         |
Oct 12 20:50:54.931 INFO kablam!     |         help: remove this `mut`
Oct 12 20:50:54.931 INFO kablam! 
Oct 12 20:50:54.931 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:50:54.931 INFO kablam!    --> src/main.rs:137:9
Oct 12 20:50:54.931 INFO kablam!     |
Oct 12 20:50:54.931 INFO kablam! 137 |     let mut sample = Sample { key: 1 };
Oct 12 20:50:54.931 INFO kablam!     |         ----^^^^^^
Oct 12 20:50:54.931 INFO kablam!     |         |
Oct 12 20:50:54.931 INFO kablam!     |         help: remove this `mut`
Oct 12 20:50:54.931 INFO kablam! 
Oct 12 20:50:54.931 INFO kablam! warning: field is never used: `key`
Oct 12 20:50:54.931 INFO kablam!  --> src/main.rs:2:3
Oct 12 20:50:54.931 INFO kablam!   |
Oct 12 20:50:54.931 INFO kablam! 2 |   key: i32,
Oct 12 20:50:54.931 INFO kablam!   |   ^^^^^^^^
Oct 12 20:50:54.931 INFO kablam!   |
Oct 12 20:50:54.931 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 20:50:54.931 INFO kablam! 
Oct 12 20:50:54.931 INFO kablam! warning: function is never used: `taking_mutable_sample`
Oct 12 20:50:54.931 INFO kablam!   --> src/main.rs:11:1
Oct 12 20:50:54.931 INFO kablam!    |
Oct 12 20:50:54.931 INFO kablam! 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Oct 12 20:50:54.931 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:50:54.931 INFO kablam! 
Oct 12 20:50:54.931 INFO kablam! warning: function is never used: `mutable_binding_function_calls`
Oct 12 20:50:54.931 INFO kablam!   --> src/main.rs:42:1
Oct 12 20:50:54.931 INFO kablam!    |
Oct 12 20:50:54.931 INFO kablam! 42 | fn mutable_binding_function_calls() {
Oct 12 20:50:54.931 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 20:50:54.931 INFO kablam! 
Oct 12 20:50:54.969 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
Oct 12 20:50:54.972 INFO kablam! su: No module specific data is present
Oct 12 20:50:56.273 INFO running `"docker" "rm" "-f" "812cf3d9842452a0132fc8b6aa973dad21900c8e854df836875e04e8c53898d5"`
Oct 12 20:50:56.540 INFO blam! 812cf3d9842452a0132fc8b6aa973dad21900c8e854df836875e04e8c53898d5