Dec 12 07:27:26.956 INFO checking sknife-0.2.2 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 07:27:26.956 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 12 07:27:27.193 INFO [stdout] ea81bdf071842538a163583f482ba61a04f1c77c9357cf1b204542c1252d04bf
Dec 12 07:27:27.199 INFO running `"docker" "start" "-a" "ea81bdf071842538a163583f482ba61a04f1c77c9357cf1b204542c1252d04bf"`
Dec 12 07:27:28.212 INFO [stderr] usermod: no changes
Dec 12 07:27:28.280 INFO [stderr]     Checking sknife v0.2.2 (/source)
Dec 12 07:27:28.732 INFO [stderr] warning: unused import: `super::*`
Dec 12 07:27:28.732 INFO [stderr]   --> src/collection/any.rs:40:9
Dec 12 07:27:28.732 INFO [stderr]    |
Dec 12 07:27:28.732 INFO [stderr] 40 |     use super::*;
Dec 12 07:27:28.732 INFO [stderr]    |         ^^^^^^^^
Dec 12 07:27:28.732 INFO [stderr]    |
Dec 12 07:27:28.732 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 07:27:28.732 INFO [stderr] 
Dec 12 07:27:28.732 INFO [stderr] warning: unused import: `super::*`
Dec 12 07:27:28.732 INFO [stderr]   --> src/collection/count.rs:28:9
Dec 12 07:27:28.732 INFO [stderr]    |
Dec 12 07:27:28.732 INFO [stderr] 28 |     use super::*;
Dec 12 07:27:28.732 INFO [stderr]    |         ^^^^^^^^
Dec 12 07:27:28.732 INFO [stderr] 
Dec 12 07:27:28.732 INFO [stderr] warning: unused import: `super::*`
Dec 12 07:27:28.732 INFO [stderr]   --> src/collection/find.rs:39:9
Dec 12 07:27:28.732 INFO [stderr]    |
Dec 12 07:27:28.732 INFO [stderr] 39 |     use super::*;
Dec 12 07:27:28.732 INFO [stderr]    |         ^^^^^^^^
Dec 12 07:27:28.732 INFO [stderr] 
Dec 12 07:27:28.732 INFO [stderr] warning: unused import: `super::*`
Dec 12 07:27:28.732 INFO [stderr]   --> src/collection/flatmap.rs:35:9
Dec 12 07:27:28.732 INFO [stderr]    |
Dec 12 07:27:28.732 INFO [stderr] 35 |     use super::*;
Dec 12 07:27:28.732 INFO [stderr]    |         ^^^^^^^^
Dec 12 07:27:28.732 INFO [stderr] 
Dec 12 07:27:28.732 INFO [stderr] warning: unused import: `std`
Dec 12 07:27:28.732 INFO [stderr]  --> src/collection/zip.rs:5:5
Dec 12 07:27:28.732 INFO [stderr]   |
Dec 12 07:27:28.732 INFO [stderr] 5 | use std;
Dec 12 07:27:28.732 INFO [stderr]   |     ^^^
Dec 12 07:27:28.732 INFO [stderr] 
Dec 12 07:27:28.763 INFO [stderr] warning: unused attribute
Dec 12 07:27:28.763 INFO [stderr]  --> src/collection/any.rs:1:1
Dec 12 07:27:28.763 INFO [stderr]   |
Dec 12 07:27:28.763 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.763 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.763 INFO [stderr]   |
Dec 12 07:27:28.763 INFO [stderr]   = note: #[warn(unused_attributes)] on by default
Dec 12 07:27:28.763 INFO [stderr] 
Dec 12 07:27:28.763 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:28.763 INFO [stderr]  --> src/collection/any.rs:1:1
Dec 12 07:27:28.763 INFO [stderr]   |
Dec 12 07:27:28.763 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.763 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.763 INFO [stderr] 
Dec 12 07:27:28.763 INFO [stderr] warning: unused attribute
Dec 12 07:27:28.763 INFO [stderr]  --> src/collection/count.rs:1:1
Dec 12 07:27:28.763 INFO [stderr]   |
Dec 12 07:27:28.763 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.763 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.763 INFO [stderr] 
Dec 12 07:27:28.763 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:28.763 INFO [stderr]  --> src/collection/count.rs:1:1
Dec 12 07:27:28.763 INFO [stderr]   |
Dec 12 07:27:28.763 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.764 INFO [stderr] warning: unused attribute
Dec 12 07:27:28.764 INFO [stderr]  --> src/collection/find.rs:1:1
Dec 12 07:27:28.764 INFO [stderr]   |
Dec 12 07:27:28.764 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.764 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:28.764 INFO [stderr]  --> src/collection/find.rs:1:1
Dec 12 07:27:28.764 INFO [stderr]   |
Dec 12 07:27:28.764 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.764 INFO [stderr] warning: unused attribute
Dec 12 07:27:28.764 INFO [stderr]  --> src/collection/flatmap.rs:1:1
Dec 12 07:27:28.764 INFO [stderr]   |
Dec 12 07:27:28.764 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.764 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:28.764 INFO [stderr]  --> src/collection/flatmap.rs:1:1
Dec 12 07:27:28.764 INFO [stderr]   |
Dec 12 07:27:28.764 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.764 INFO [stderr] warning: unused attribute
Dec 12 07:27:28.764 INFO [stderr]  --> src/collection/map.rs:1:1
Dec 12 07:27:28.764 INFO [stderr]   |
Dec 12 07:27:28.764 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.764 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:28.764 INFO [stderr]  --> src/collection/map.rs:1:1
Dec 12 07:27:28.764 INFO [stderr]   |
Dec 12 07:27:28.764 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.764 INFO [stderr] warning: unused attribute
Dec 12 07:27:28.764 INFO [stderr]  --> src/collection/reduce.rs:2:1
Dec 12 07:27:28.764 INFO [stderr]   |
Dec 12 07:27:28.764 INFO [stderr] 2 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.764 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:28.764 INFO [stderr]  --> src/collection/reduce.rs:2:1
Dec 12 07:27:28.764 INFO [stderr]   |
Dec 12 07:27:28.764 INFO [stderr] 2 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.764 INFO [stderr] warning: unused attribute
Dec 12 07:27:28.764 INFO [stderr]  --> src/collection/zip.rs:1:1
Dec 12 07:27:28.764 INFO [stderr]   |
Dec 12 07:27:28.764 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.764 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:28.764 INFO [stderr]  --> src/collection/zip.rs:1:1
Dec 12 07:27:28.764 INFO [stderr]   |
Dec 12 07:27:28.764 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:28.764 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:28.764 INFO [stderr] 
Dec 12 07:27:28.884 INFO [stderr] warning: unused import: `std`
Dec 12 07:27:28.884 INFO [stderr]  --> src/collection/zip.rs:5:5
Dec 12 07:27:28.884 INFO [stderr]   |
Dec 12 07:27:28.884 INFO [stderr] 5 | use std;
Dec 12 07:27:28.884 INFO [stderr]   |     ^^^
Dec 12 07:27:28.884 INFO [stderr]   |
Dec 12 07:27:28.884 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 07:27:28.884 INFO [stderr] 
Dec 12 07:27:29.287 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.287 INFO [stderr]   --> src/collection/any.rs:44:13
Dec 12 07:27:29.287 INFO [stderr]    |
Dec 12 07:27:29.287 INFO [stderr] 44 |         let mut list = vec![];
Dec 12 07:27:29.287 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.287 INFO [stderr]    |             |
Dec 12 07:27:29.287 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.287 INFO [stderr]    |
Dec 12 07:27:29.287 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 07:27:29.287 INFO [stderr] 
Dec 12 07:27:29.289 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.289 INFO [stderr]   --> src/collection/any.rs:54:13
Dec 12 07:27:29.289 INFO [stderr]    |
Dec 12 07:27:29.289 INFO [stderr] 54 |         let mut list = vec![1, 2, 3, 4];
Dec 12 07:27:29.289 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.289 INFO [stderr]    |             |
Dec 12 07:27:29.289 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.289 INFO [stderr] 
Dec 12 07:27:29.290 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.290 INFO [stderr]   --> src/collection/count.rs:32:13
Dec 12 07:27:29.290 INFO [stderr]    |
Dec 12 07:27:29.290 INFO [stderr] 32 |         let mut list: Vec<i32> = vec![];
Dec 12 07:27:29.290 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.290 INFO [stderr]    |             |
Dec 12 07:27:29.290 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.290 INFO [stderr] 
Dec 12 07:27:29.291 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.291 INFO [stderr]   --> src/collection/count.rs:38:13
Dec 12 07:27:29.291 INFO [stderr]    |
Dec 12 07:27:29.291 INFO [stderr] 38 |         let mut list = vec![1, 2, 3, 4];
Dec 12 07:27:29.291 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.291 INFO [stderr]    |             |
Dec 12 07:27:29.291 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.291 INFO [stderr] 
Dec 12 07:27:29.296 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.296 INFO [stderr]   --> src/collection/find.rs:43:13
Dec 12 07:27:29.296 INFO [stderr]    |
Dec 12 07:27:29.296 INFO [stderr] 43 |         let mut list = vec![];
Dec 12 07:27:29.296 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.296 INFO [stderr]    |             |
Dec 12 07:27:29.296 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.296 INFO [stderr] 
Dec 12 07:27:29.300 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.300 INFO [stderr]   --> src/collection/find.rs:53:13
Dec 12 07:27:29.300 INFO [stderr]    |
Dec 12 07:27:29.300 INFO [stderr] 53 |         let mut list = vec![1, 2, 3, 4];
Dec 12 07:27:29.300 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.300 INFO [stderr]    |             |
Dec 12 07:27:29.300 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.300 INFO [stderr] 
Dec 12 07:27:29.324 INFO [stderr] warning: unused attribute
Dec 12 07:27:29.324 INFO [stderr]  --> src/collection/any.rs:1:1
Dec 12 07:27:29.324 INFO [stderr]   |
Dec 12 07:27:29.324 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.324 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.324 INFO [stderr]   |
Dec 12 07:27:29.324 INFO [stderr]   = note: #[warn(unused_attributes)] on by default
Dec 12 07:27:29.324 INFO [stderr] 
Dec 12 07:27:29.324 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:29.324 INFO [stderr]  --> src/collection/any.rs:1:1
Dec 12 07:27:29.324 INFO [stderr]   |
Dec 12 07:27:29.324 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.324 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.324 INFO [stderr] 
Dec 12 07:27:29.325 INFO [stderr] warning: unused attribute
Dec 12 07:27:29.325 INFO [stderr]  --> src/collection/count.rs:1:1
Dec 12 07:27:29.325 INFO [stderr]   |
Dec 12 07:27:29.325 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.325 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.325 INFO [stderr] 
Dec 12 07:27:29.325 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:29.325 INFO [stderr]  --> src/collection/count.rs:1:1
Dec 12 07:27:29.325 INFO [stderr]   |
Dec 12 07:27:29.325 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.325 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.325 INFO [stderr] 
Dec 12 07:27:29.325 INFO [stderr] warning: unused attribute
Dec 12 07:27:29.325 INFO [stderr]  --> src/collection/find.rs:1:1
Dec 12 07:27:29.325 INFO [stderr]   |
Dec 12 07:27:29.325 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.325 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.325 INFO [stderr] 
Dec 12 07:27:29.325 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:29.325 INFO [stderr]  --> src/collection/find.rs:1:1
Dec 12 07:27:29.325 INFO [stderr]   |
Dec 12 07:27:29.325 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.325 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.325 INFO [stderr] 
Dec 12 07:27:29.325 INFO [stderr] warning: unused attribute
Dec 12 07:27:29.325 INFO [stderr]  --> src/collection/flatmap.rs:1:1
Dec 12 07:27:29.325 INFO [stderr]   |
Dec 12 07:27:29.325 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.330 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.330 INFO [stderr] 
Dec 12 07:27:29.330 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:29.330 INFO [stderr]  --> src/collection/flatmap.rs:1:1
Dec 12 07:27:29.330 INFO [stderr]   |
Dec 12 07:27:29.330 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.330 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.330 INFO [stderr] 
Dec 12 07:27:29.330 INFO [stderr] warning: unused attribute
Dec 12 07:27:29.330 INFO [stderr]  --> src/collection/map.rs:1:1
Dec 12 07:27:29.330 INFO [stderr]   |
Dec 12 07:27:29.330 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.330 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.330 INFO [stderr] 
Dec 12 07:27:29.330 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:29.330 INFO [stderr]  --> src/collection/map.rs:1:1
Dec 12 07:27:29.330 INFO [stderr]   |
Dec 12 07:27:29.330 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.330 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.330 INFO [stderr] 
Dec 12 07:27:29.330 INFO [stderr] warning: unused attribute
Dec 12 07:27:29.330 INFO [stderr]  --> src/collection/reduce.rs:2:1
Dec 12 07:27:29.330 INFO [stderr]   |
Dec 12 07:27:29.330 INFO [stderr] 2 | #![crate_name = "sknife"]
Dec 12 07:27:29.330 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.330 INFO [stderr] 
Dec 12 07:27:29.330 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:29.330 INFO [stderr]  --> src/collection/reduce.rs:2:1
Dec 12 07:27:29.330 INFO [stderr]   |
Dec 12 07:27:29.330 INFO [stderr] 2 | #![crate_name = "sknife"]
Dec 12 07:27:29.330 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.330 INFO [stderr] 
Dec 12 07:27:29.330 INFO [stderr] warning: unused attribute
Dec 12 07:27:29.330 INFO [stderr]  --> src/collection/zip.rs:1:1
Dec 12 07:27:29.330 INFO [stderr]   |
Dec 12 07:27:29.330 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.330 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.330 INFO [stderr] 
Dec 12 07:27:29.330 INFO [stderr] warning: crate-level attribute should be in the root module
Dec 12 07:27:29.330 INFO [stderr]  --> src/collection/zip.rs:1:1
Dec 12 07:27:29.330 INFO [stderr]   |
Dec 12 07:27:29.330 INFO [stderr] 1 | #![crate_name = "sknife"]
Dec 12 07:27:29.330 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 07:27:29.330 INFO [stderr] 
Dec 12 07:27:29.708 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.708 INFO [stderr]  --> tests/collections_find.rs:7:9
Dec 12 07:27:29.708 INFO [stderr]   |
Dec 12 07:27:29.708 INFO [stderr] 7 |     let mut list = vec![1, 3, 4, 7, 3, 9];
Dec 12 07:27:29.708 INFO [stderr]   |         ----^^^^
Dec 12 07:27:29.708 INFO [stderr]   |         |
Dec 12 07:27:29.708 INFO [stderr]   |         help: remove this `mut`
Dec 12 07:27:29.716 INFO [stderr]   |
Dec 12 07:27:29.720 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 12 07:27:29.720 INFO [stderr] 
Dec 12 07:27:29.783 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.783 INFO [stderr]   --> benches/collections_map.rs:15:13
Dec 12 07:27:29.783 INFO [stderr]    |
Dec 12 07:27:29.783 INFO [stderr] 15 |         let mut slice = list.as_mut_slice();
Dec 12 07:27:29.783 INFO [stderr]    |             ----^^^^^
Dec 12 07:27:29.783 INFO [stderr]    |             |
Dec 12 07:27:29.783 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.783 INFO [stderr]    |
Dec 12 07:27:29.783 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 07:27:29.783 INFO [stderr] 
Dec 12 07:27:29.783 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.783 INFO [stderr]   --> benches/collections_map.rs:16:13
Dec 12 07:27:29.783 INFO [stderr]    |
Dec 12 07:27:29.783 INFO [stderr] 16 |         let mut plus_one = |x: i32| x + 1;
Dec 12 07:27:29.784 INFO [stderr]    |             ----^^^^^^^^
Dec 12 07:27:29.784 INFO [stderr]    |             |
Dec 12 07:27:29.784 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.784 INFO [stderr] 
Dec 12 07:27:29.784 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.784 INFO [stderr]   --> benches/collections_map.rs:22:13
Dec 12 07:27:29.784 INFO [stderr]    |
Dec 12 07:27:29.784 INFO [stderr] 22 |         let mut list = vec![1, 2, 3];
Dec 12 07:27:29.784 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.784 INFO [stderr]    |             |
Dec 12 07:27:29.784 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.784 INFO [stderr] 
Dec 12 07:27:29.784 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.784 INFO [stderr]   --> benches/collections_map.rs:23:13
Dec 12 07:27:29.784 INFO [stderr]    |
Dec 12 07:27:29.784 INFO [stderr] 23 |         let mut plus_one = |x| x + 1;
Dec 12 07:27:29.784 INFO [stderr]    |             ----^^^^^^^^
Dec 12 07:27:29.784 INFO [stderr]    |             |
Dec 12 07:27:29.784 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.784 INFO [stderr] 
Dec 12 07:27:29.832 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.832 INFO [stderr]   --> benches/collections_flatmap.rs:15:13
Dec 12 07:27:29.832 INFO [stderr]    |
Dec 12 07:27:29.832 INFO [stderr] 15 |         let mut slice: &mut [i32] = list.as_mut_slice();
Dec 12 07:27:29.832 INFO [stderr]    |             ----^^^^^
Dec 12 07:27:29.832 INFO [stderr]    |             |
Dec 12 07:27:29.832 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.832 INFO [stderr]    |
Dec 12 07:27:29.832 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 07:27:29.832 INFO [stderr] 
Dec 12 07:27:29.832 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.832 INFO [stderr]   --> benches/collections_flatmap.rs:16:13
Dec 12 07:27:29.832 INFO [stderr]    |
Dec 12 07:27:29.832 INFO [stderr] 16 |         let mut plus_one = |x: &mut i32| vec![*x];
Dec 12 07:27:29.832 INFO [stderr]    |             ----^^^^^^^^
Dec 12 07:27:29.832 INFO [stderr]    |             |
Dec 12 07:27:29.832 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.832 INFO [stderr] 
Dec 12 07:27:29.832 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.832 INFO [stderr]   --> benches/collections_flatmap.rs:22:13
Dec 12 07:27:29.832 INFO [stderr]    |
Dec 12 07:27:29.832 INFO [stderr] 22 |         let mut list = vec![1, 2, 3];
Dec 12 07:27:29.832 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.832 INFO [stderr]    |             |
Dec 12 07:27:29.832 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.832 INFO [stderr] 
Dec 12 07:27:29.832 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.832 INFO [stderr]   --> benches/collections_flatmap.rs:23:13
Dec 12 07:27:29.832 INFO [stderr]    |
Dec 12 07:27:29.832 INFO [stderr] 23 |         let mut plus_one = |x| vec![x];
Dec 12 07:27:29.832 INFO [stderr]    |             ----^^^^^^^^
Dec 12 07:27:29.832 INFO [stderr]    |             |
Dec 12 07:27:29.832 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.832 INFO [stderr] 
Dec 12 07:27:29.952 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.952 INFO [stderr]  --> tests/collections_any.rs:7:9
Dec 12 07:27:29.952 INFO [stderr]   |
Dec 12 07:27:29.952 INFO [stderr] 7 |     let mut list = vec![1, 2, 3, 4];
Dec 12 07:27:29.952 INFO [stderr]   |         ----^^^^
Dec 12 07:27:29.952 INFO [stderr]   |         |
Dec 12 07:27:29.952 INFO [stderr]   |         help: remove this `mut`
Dec 12 07:27:29.952 INFO [stderr]   |
Dec 12 07:27:29.952 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 12 07:27:29.952 INFO [stderr] 
Dec 12 07:27:29.974 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.975 INFO [stderr]   --> benches/collections_reduce.rs:15:13
Dec 12 07:27:29.975 INFO [stderr]    |
Dec 12 07:27:29.975 INFO [stderr] 15 |         let mut fact = |acc: i32, x| acc * x;
Dec 12 07:27:29.975 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.975 INFO [stderr]    |             |
Dec 12 07:27:29.975 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.975 INFO [stderr]    |
Dec 12 07:27:29.975 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 07:27:29.975 INFO [stderr] 
Dec 12 07:27:29.976 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.976 INFO [stderr]   --> benches/collections_reduce.rs:21:13
Dec 12 07:27:29.976 INFO [stderr]    |
Dec 12 07:27:29.976 INFO [stderr] 21 |         let mut list: Vec<i32> = (1..50).collect();
Dec 12 07:27:29.976 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.976 INFO [stderr]    |             |
Dec 12 07:27:29.977 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.977 INFO [stderr] 
Dec 12 07:27:29.977 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:27:29.977 INFO [stderr]   --> benches/collections_reduce.rs:22:13
Dec 12 07:27:29.977 INFO [stderr]    |
Dec 12 07:27:29.977 INFO [stderr] 22 |         let mut fact = |acc: i32, x| acc * x;
Dec 12 07:27:29.977 INFO [stderr]    |             ----^^^^
Dec 12 07:27:29.977 INFO [stderr]    |             |
Dec 12 07:27:29.977 INFO [stderr]    |             help: remove this `mut`
Dec 12 07:27:29.977 INFO [stderr] 
Dec 12 07:27:30.000 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.75s
Dec 12 07:27:30.000 INFO [stderr] su: No module specific data is present
Dec 12 07:27:30.661 INFO running `"docker" "inspect" "ea81bdf071842538a163583f482ba61a04f1c77c9357cf1b204542c1252d04bf"`
Dec 12 07:27:30.898 INFO running `"docker" "rm" "-f" "ea81bdf071842538a163583f482ba61a04f1c77c9357cf1b204542c1252d04bf"`
Dec 12 07:27:31.156 INFO [stdout] ea81bdf071842538a163583f482ba61a04f1c77c9357cf1b204542c1252d04bf