Nov 28 04:32:45.882 INFO checking hardvain/rust-practice against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 04:32:45.883 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-6/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 28 04:32:46.283 INFO [stdout] 49feeda814011d41f800c45a069bc892def62c5c293eeb0b7908d6df5743fbde
Nov 28 04:32:46.284 INFO running `"docker" "start" "-a" "49feeda814011d41f800c45a069bc892def62c5c293eeb0b7908d6df5743fbde"`
Nov 28 04:32:47.216 INFO [stderr] usermod: no changes
Nov 28 04:32:47.288 INFO [stderr]     Checking practice v0.1.0 (/source)
Nov 28 04:32:47.959 INFO [stderr] warning: unused variable: `sample`
Nov 28 04:32:47.959 INFO [stderr]  --> src/main.rs:9:24
Nov 28 04:32:47.959 INFO [stderr]   |
Nov 28 04:32:47.959 INFO [stderr] 9 | fn taking_owned_sample(sample: Sample) {}
Nov 28 04:32:47.959 INFO [stderr]   |                        ^^^^^^ help: consider using `_sample` instead
Nov 28 04:32:47.959 INFO [stderr]   |
Nov 28 04:32:47.959 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 28 04:32:47.959 INFO [stderr] 
Nov 28 04:32:47.959 INFO [stderr] warning: unused variable: `sample`
Nov 28 04:32:47.959 INFO [stderr]   --> src/main.rs:10:25
Nov 28 04:32:47.959 INFO [stderr]    |
Nov 28 04:32:47.959 INFO [stderr] 10 | fn taking_shared_sample(sample: &Sample) {}
Nov 28 04:32:47.959 INFO [stderr]    |                         ^^^^^^ help: consider using `_sample` instead
Nov 28 04:32:47.959 INFO [stderr] 
Nov 28 04:32:47.959 INFO [stderr] warning: unused variable: `sample`
Nov 28 04:32:47.959 INFO [stderr]   --> src/main.rs:11:26
Nov 28 04:32:47.959 INFO [stderr]    |
Nov 28 04:32:47.959 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Nov 28 04:32:47.959 INFO [stderr]    |                          ^^^^^^ help: consider using `_sample` instead
Nov 28 04:32:47.959 INFO [stderr] 
Nov 28 04:32:47.959 INFO [stderr] warning: unused variable: `sample`
Nov 28 04:32:47.959 INFO [stderr]   --> src/main.rs:37:9
Nov 28 04:32:47.959 INFO [stderr]    |
Nov 28 04:32:47.959 INFO [stderr] 37 |     let sample = Sample { key: 1 };
Nov 28 04:32:47.959 INFO [stderr]    |         ^^^^^^ help: consider using `_sample` instead
Nov 28 04:32:47.959 INFO [stderr] 
Nov 28 04:32:47.972 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:47.972 INFO [stderr]   --> src/main.rs:44:9
Nov 28 04:32:47.972 INFO [stderr]    |
Nov 28 04:32:47.972 INFO [stderr] 44 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:47.972 INFO [stderr]    |         ----^^^^^^
Nov 28 04:32:47.972 INFO [stderr]    |         |
Nov 28 04:32:47.972 INFO [stderr]    |         help: remove this `mut`
Nov 28 04:32:47.972 INFO [stderr]    |
Nov 28 04:32:47.972 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 04:32:47.973 INFO [stderr] 
Nov 28 04:32:47.973 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:47.973 INFO [stderr]   --> src/main.rs:60:9
Nov 28 04:32:47.973 INFO [stderr]    |
Nov 28 04:32:47.973 INFO [stderr] 60 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:47.973 INFO [stderr]    |         ----^^^^^^
Nov 28 04:32:47.973 INFO [stderr]    |         |
Nov 28 04:32:47.973 INFO [stderr]    |         help: remove this `mut`
Nov 28 04:32:47.973 INFO [stderr] 
Nov 28 04:32:47.973 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:47.973 INFO [stderr]    --> src/main.rs:113:9
Nov 28 04:32:47.973 INFO [stderr]     |
Nov 28 04:32:47.973 INFO [stderr] 113 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:47.973 INFO [stderr]     |         ----^^^^^^
Nov 28 04:32:47.973 INFO [stderr]     |         |
Nov 28 04:32:47.973 INFO [stderr]     |         help: remove this `mut`
Nov 28 04:32:47.973 INFO [stderr] 
Nov 28 04:32:47.973 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:47.973 INFO [stderr]    --> src/main.rs:121:9
Nov 28 04:32:47.973 INFO [stderr]     |
Nov 28 04:32:47.973 INFO [stderr] 121 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:47.973 INFO [stderr]     |         ----^^^^^^
Nov 28 04:32:47.973 INFO [stderr]     |         |
Nov 28 04:32:47.973 INFO [stderr]     |         help: remove this `mut`
Nov 28 04:32:47.973 INFO [stderr] 
Nov 28 04:32:47.973 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:47.973 INFO [stderr]    --> src/main.rs:130:9
Nov 28 04:32:47.973 INFO [stderr]     |
Nov 28 04:32:47.973 INFO [stderr] 130 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:47.973 INFO [stderr]     |         ----^^^^^^
Nov 28 04:32:47.973 INFO [stderr]     |         |
Nov 28 04:32:47.973 INFO [stderr]     |         help: remove this `mut`
Nov 28 04:32:47.973 INFO [stderr] 
Nov 28 04:32:47.973 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:47.973 INFO [stderr]    --> src/main.rs:137:9
Nov 28 04:32:47.973 INFO [stderr]     |
Nov 28 04:32:47.973 INFO [stderr] 137 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:47.973 INFO [stderr]     |         ----^^^^^^
Nov 28 04:32:47.973 INFO [stderr]     |         |
Nov 28 04:32:47.973 INFO [stderr]     |         help: remove this `mut`
Nov 28 04:32:47.973 INFO [stderr] 
Nov 28 04:32:47.973 INFO [stderr] warning: field is never used: `key`
Nov 28 04:32:47.973 INFO [stderr]  --> src/main.rs:2:3
Nov 28 04:32:47.973 INFO [stderr]   |
Nov 28 04:32:47.973 INFO [stderr] 2 |   key: i32,
Nov 28 04:32:47.973 INFO [stderr]   |   ^^^^^^^^
Nov 28 04:32:47.973 INFO [stderr]   |
Nov 28 04:32:47.973 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 04:32:47.973 INFO [stderr] 
Nov 28 04:32:47.973 INFO [stderr] warning: function is never used: `taking_mutable_sample`
Nov 28 04:32:47.973 INFO [stderr]   --> src/main.rs:11:1
Nov 28 04:32:47.973 INFO [stderr]    |
Nov 28 04:32:47.973 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Nov 28 04:32:47.973 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 04:32:47.973 INFO [stderr] 
Nov 28 04:32:47.973 INFO [stderr] warning: function is never used: `mutable_binding_function_calls`
Nov 28 04:32:47.973 INFO [stderr]   --> src/main.rs:42:1
Nov 28 04:32:47.973 INFO [stderr]    |
Nov 28 04:32:47.973 INFO [stderr] 42 | fn mutable_binding_function_calls() {
Nov 28 04:32:47.973 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 04:32:47.973 INFO [stderr] 
Nov 28 04:32:47.996 INFO [stderr] warning: unused variable: `sample`
Nov 28 04:32:47.996 INFO [stderr]  --> src/main.rs:9:24
Nov 28 04:32:47.996 INFO [stderr]   |
Nov 28 04:32:47.996 INFO [stderr] 9 | fn taking_owned_sample(sample: Sample) {}
Nov 28 04:32:47.996 INFO [stderr]   |                        ^^^^^^ help: consider using `_sample` instead
Nov 28 04:32:48.008 INFO [stderr]   |
Nov 28 04:32:48.008 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 28 04:32:48.008 INFO [stderr] 
Nov 28 04:32:48.008 INFO [stderr] warning: unused variable: `sample`
Nov 28 04:32:48.008 INFO [stderr]   --> src/main.rs:10:25
Nov 28 04:32:48.008 INFO [stderr]    |
Nov 28 04:32:48.008 INFO [stderr] 10 | fn taking_shared_sample(sample: &Sample) {}
Nov 28 04:32:48.008 INFO [stderr]    |                         ^^^^^^ help: consider using `_sample` instead
Nov 28 04:32:48.008 INFO [stderr] 
Nov 28 04:32:48.008 INFO [stderr] warning: unused variable: `sample`
Nov 28 04:32:48.008 INFO [stderr]   --> src/main.rs:11:26
Nov 28 04:32:48.008 INFO [stderr]    |
Nov 28 04:32:48.008 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Nov 28 04:32:48.008 INFO [stderr]    |                          ^^^^^^ help: consider using `_sample` instead
Nov 28 04:32:48.008 INFO [stderr] 
Nov 28 04:32:48.008 INFO [stderr] warning: unused variable: `sample`
Nov 28 04:32:48.008 INFO [stderr]   --> src/main.rs:37:9
Nov 28 04:32:48.008 INFO [stderr]    |
Nov 28 04:32:48.008 INFO [stderr] 37 |     let sample = Sample { key: 1 };
Nov 28 04:32:48.008 INFO [stderr]    |         ^^^^^^ help: consider using `_sample` instead
Nov 28 04:32:48.008 INFO [stderr] 
Nov 28 04:32:48.009 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:48.009 INFO [stderr]   --> src/main.rs:44:9
Nov 28 04:32:48.016 INFO [stderr]    |
Nov 28 04:32:48.016 INFO [stderr] 44 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:48.016 INFO [stderr]    |         ----^^^^^^
Nov 28 04:32:48.016 INFO [stderr]    |         |
Nov 28 04:32:48.016 INFO [stderr]    |         help: remove this `mut`
Nov 28 04:32:48.016 INFO [stderr]    |
Nov 28 04:32:48.016 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 04:32:48.016 INFO [stderr] 
Nov 28 04:32:48.016 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:48.016 INFO [stderr]   --> src/main.rs:60:9
Nov 28 04:32:48.016 INFO [stderr]    |
Nov 28 04:32:48.016 INFO [stderr] 60 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:48.016 INFO [stderr]    |         ----^^^^^^
Nov 28 04:32:48.016 INFO [stderr]    |         |
Nov 28 04:32:48.016 INFO [stderr]    |         help: remove this `mut`
Nov 28 04:32:48.016 INFO [stderr] 
Nov 28 04:32:48.016 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:48.017 INFO [stderr]    --> src/main.rs:113:9
Nov 28 04:32:48.017 INFO [stderr]     |
Nov 28 04:32:48.017 INFO [stderr] 113 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:48.017 INFO [stderr]     |         ----^^^^^^
Nov 28 04:32:48.017 INFO [stderr]     |         |
Nov 28 04:32:48.017 INFO [stderr]     |         help: remove this `mut`
Nov 28 04:32:48.017 INFO [stderr] 
Nov 28 04:32:48.028 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:48.028 INFO [stderr]    --> src/main.rs:121:9
Nov 28 04:32:48.028 INFO [stderr]     |
Nov 28 04:32:48.028 INFO [stderr] 121 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:48.028 INFO [stderr]     |         ----^^^^^^
Nov 28 04:32:48.028 INFO [stderr]     |         |
Nov 28 04:32:48.028 INFO [stderr]     |         help: remove this `mut`
Nov 28 04:32:48.028 INFO [stderr] 
Nov 28 04:32:48.028 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:48.028 INFO [stderr]    --> src/main.rs:130:9
Nov 28 04:32:48.028 INFO [stderr]     |
Nov 28 04:32:48.028 INFO [stderr] 130 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:48.028 INFO [stderr]     |         ----^^^^^^
Nov 28 04:32:48.028 INFO [stderr]     |         |
Nov 28 04:32:48.028 INFO [stderr]     |         help: remove this `mut`
Nov 28 04:32:48.028 INFO [stderr] 
Nov 28 04:32:48.028 INFO [stderr] warning: variable does not need to be mutable
Nov 28 04:32:48.028 INFO [stderr]    --> src/main.rs:137:9
Nov 28 04:32:48.028 INFO [stderr]     |
Nov 28 04:32:48.028 INFO [stderr] 137 |     let mut sample = Sample { key: 1 };
Nov 28 04:32:48.028 INFO [stderr]     |         ----^^^^^^
Nov 28 04:32:48.028 INFO [stderr]     |         |
Nov 28 04:32:48.028 INFO [stderr]     |         help: remove this `mut`
Nov 28 04:32:48.029 INFO [stderr] 
Nov 28 04:32:48.029 INFO [stderr] warning: field is never used: `key`
Nov 28 04:32:48.029 INFO [stderr]  --> src/main.rs:2:3
Nov 28 04:32:48.029 INFO [stderr]   |
Nov 28 04:32:48.029 INFO [stderr] 2 |   key: i32,
Nov 28 04:32:48.029 INFO [stderr]   |   ^^^^^^^^
Nov 28 04:32:48.029 INFO [stderr]   |
Nov 28 04:32:48.029 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 04:32:48.029 INFO [stderr] 
Nov 28 04:32:48.029 INFO [stderr] warning: function is never used: `taking_mutable_sample`
Nov 28 04:32:48.029 INFO [stderr]   --> src/main.rs:11:1
Nov 28 04:32:48.029 INFO [stderr]    |
Nov 28 04:32:48.029 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Nov 28 04:32:48.029 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 04:32:48.029 INFO [stderr] 
Nov 28 04:32:48.029 INFO [stderr] warning: function is never used: `mutable_binding_function_calls`
Nov 28 04:32:48.029 INFO [stderr]   --> src/main.rs:42:1
Nov 28 04:32:48.029 INFO [stderr]    |
Nov 28 04:32:48.029 INFO [stderr] 42 | fn mutable_binding_function_calls() {
Nov 28 04:32:48.029 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 04:32:48.029 INFO [stderr] 
Nov 28 04:32:48.052 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
Nov 28 04:32:48.056 INFO [stderr] su: No module specific data is present
Nov 28 04:32:48.696 INFO running `"docker" "inspect" "49feeda814011d41f800c45a069bc892def62c5c293eeb0b7908d6df5743fbde"`
Nov 28 04:32:48.967 INFO running `"docker" "rm" "-f" "49feeda814011d41f800c45a069bc892def62c5c293eeb0b7908d6df5743fbde"`
Nov 28 04:32:49.248 INFO [stdout] 49feeda814011d41f800c45a069bc892def62c5c293eeb0b7908d6df5743fbde