Oct 12 20:52:28.782 INFO checking halcyon/rust_tut against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 20:52:28.784 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/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 20:52:29.223 INFO blam! 292aa98f8cca80ed963fae102b7ca514a1f719ea94b51017147c6b4c11a47d11
Oct 12 20:52:29.230 INFO running `"docker" "start" "-a" "292aa98f8cca80ed963fae102b7ca514a1f719ea94b51017147c6b4c11a47d11"`
Oct 12 20:52:30.260 INFO kablam! usermod: no changes
Oct 12 20:52:30.328 INFO kablam!     Checking rust_tut v0.1.0 (/source)
Oct 12 20:52:30.740 INFO kablam! warning: unused imports: `u16`, `u32`, `u64`, `u8`
Oct 12 20:52:30.740 INFO kablam!  --> src/main.rs:1:30
Oct 12 20:52:30.740 INFO kablam!   |
Oct 12 20:52:30.740 INFO kablam! 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64};
Oct 12 20:52:30.740 INFO kablam!   |                              ^^  ^^^  ^^^  ^^^
Oct 12 20:52:30.740 INFO kablam!   |
Oct 12 20:52:30.740 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 20:52:30.740 INFO kablam! 
Oct 12 20:52:30.740 INFO kablam! warning: unnecessary parentheses around `if` condition
Oct 12 20:52:30.740 INFO kablam!   --> src/main.rs:62:8
Oct 12 20:52:30.740 INFO kablam!    |
Oct 12 20:52:30.740 INFO kablam! 62 |     if (age_old == 5) {
Oct 12 20:52:30.740 INFO kablam!    |        ^^^^^^^^^^^^^^ help: remove these parentheses
Oct 12 20:52:30.740 INFO kablam!    |
Oct 12 20:52:30.740 INFO kablam!    = note: #[warn(unused_parens)] on by default
Oct 12 20:52:30.740 INFO kablam! 
Oct 12 20:52:30.740 INFO kablam! warning: unnecessary parentheses around `if` condition
Oct 12 20:52:30.740 INFO kablam!   --> src/main.rs:78:23
Oct 12 20:52:30.740 INFO kablam!    |
Oct 12 20:52:30.740 INFO kablam! 78 |     let can_vote = if (age_old >= 18) { true } else { false };
Oct 12 20:52:30.740 INFO kablam!    |                       ^^^^^^^^^^^^^^^ help: remove these parentheses
Oct 12 20:52:30.740 INFO kablam! 
Oct 12 20:52:30.740 INFO kablam! warning: unnecessary parentheses around `if` condition
Oct 12 20:52:30.740 INFO kablam!   --> src/main.rs:85:12
Oct 12 20:52:30.740 INFO kablam!    |
Oct 12 20:52:30.740 INFO kablam! 85 |         if ((x % 2) == 0) {
Oct 12 20:52:30.740 INFO kablam!    |            ^^^^^^^^^^^^^^ help: remove these parentheses
Oct 12 20:52:30.740 INFO kablam! 
Oct 12 20:52:30.740 INFO kablam! warning: unnecessary parentheses around `if` condition
Oct 12 20:52:30.741 INFO kablam!   --> src/main.rs:90:12
Oct 12 20:52:30.741 INFO kablam!    |
Oct 12 20:52:30.741 INFO kablam! 90 |         if (x > 10) {
Oct 12 20:52:30.741 INFO kablam!    |            ^^^^^^^^ help: remove these parentheses
Oct 12 20:52:30.741 INFO kablam! 
Oct 12 20:52:30.828 INFO kablam! warning: unused imports: `u16`, `u32`, `u64`, `u8`
Oct 12 20:52:30.828 INFO kablam!  --> src/main.rs:1:30
Oct 12 20:52:30.828 INFO kablam!   |
Oct 12 20:52:30.828 INFO kablam! 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64};
Oct 12 20:52:30.828 INFO kablam!   |                              ^^  ^^^  ^^^  ^^^
Oct 12 20:52:30.828 INFO kablam!   |
Oct 12 20:52:30.828 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 20:52:30.828 INFO kablam! 
Oct 12 20:52:30.828 INFO kablam! warning: unnecessary parentheses around `if` condition
Oct 12 20:52:30.828 INFO kablam!   --> src/main.rs:62:8
Oct 12 20:52:30.828 INFO kablam!    |
Oct 12 20:52:30.828 INFO kablam! 62 |     if (age_old == 5) {
Oct 12 20:52:30.828 INFO kablam!    |        ^^^^^^^^^^^^^^ help: remove these parentheses
Oct 12 20:52:30.828 INFO kablam!    |
Oct 12 20:52:30.828 INFO kablam!    = note: #[warn(unused_parens)] on by default
Oct 12 20:52:30.828 INFO kablam! 
Oct 12 20:52:30.828 INFO kablam! warning: unnecessary parentheses around `if` condition
Oct 12 20:52:30.828 INFO kablam!   --> src/main.rs:78:23
Oct 12 20:52:30.828 INFO kablam!    |
Oct 12 20:52:30.828 INFO kablam! 78 |     let can_vote = if (age_old >= 18) { true } else { false };
Oct 12 20:52:30.828 INFO kablam!    |                       ^^^^^^^^^^^^^^^ help: remove these parentheses
Oct 12 20:52:30.828 INFO kablam! 
Oct 12 20:52:30.828 INFO kablam! warning: unnecessary parentheses around `if` condition
Oct 12 20:52:30.828 INFO kablam!   --> src/main.rs:85:12
Oct 12 20:52:30.828 INFO kablam!    |
Oct 12 20:52:30.828 INFO kablam! 85 |         if ((x % 2) == 0) {
Oct 12 20:52:30.828 INFO kablam!    |            ^^^^^^^^^^^^^^ help: remove these parentheses
Oct 12 20:52:30.828 INFO kablam! 
Oct 12 20:52:30.828 INFO kablam! warning: unnecessary parentheses around `if` condition
Oct 12 20:52:30.828 INFO kablam!   --> src/main.rs:90:12
Oct 12 20:52:30.828 INFO kablam!    |
Oct 12 20:52:30.828 INFO kablam! 90 |         if (x > 10) {
Oct 12 20:52:30.828 INFO kablam!    |            ^^^^^^^^ help: remove these parentheses
Oct 12 20:52:30.828 INFO kablam! 
Oct 12 20:52:30.920 INFO kablam! warning: unused variable: `num`
Oct 12 20:52:30.920 INFO kablam!  --> src/main.rs:8:9
Oct 12 20:52:30.920 INFO kablam!   |
Oct 12 20:52:30.920 INFO kablam! 8 |     let num = 10;
Oct 12 20:52:30.920 INFO kablam!   |         ^^^ help: consider using `_num` instead
Oct 12 20:52:30.920 INFO kablam!   |
Oct 12 20:52:30.920 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 12 20:52:30.920 INFO kablam! 
Oct 12 20:52:30.921 INFO kablam! warning: unused variable: `f_name`
Oct 12 20:52:30.921 INFO kablam!   --> src/main.rs:34:10
Oct 12 20:52:30.921 INFO kablam!    |
Oct 12 20:52:30.921 INFO kablam! 34 |     let (f_name, l_name) = ("Derek", "Banas");
Oct 12 20:52:30.921 INFO kablam!    |          ^^^^^^ help: consider using `_f_name` instead
Oct 12 20:52:30.921 INFO kablam! 
Oct 12 20:52:30.921 INFO kablam! warning: unused variable: `l_name`
Oct 12 20:52:30.921 INFO kablam!   --> src/main.rs:34:18
Oct 12 20:52:30.921 INFO kablam!    |
Oct 12 20:52:30.921 INFO kablam! 34 |     let (f_name, l_name) = ("Derek", "Banas");
Oct 12 20:52:30.921 INFO kablam!    |                  ^^^^^^ help: consider using `_l_name` instead
Oct 12 20:52:30.921 INFO kablam! 
Oct 12 20:52:30.921 INFO kablam! warning: unused variable: `count`
Oct 12 20:52:30.921 INFO kablam!    --> src/main.rs:116:9
Oct 12 20:52:30.921 INFO kablam!     |
Oct 12 20:52:30.921 INFO kablam! 116 |     let count = rand_string.chars().count();
Oct 12 20:52:30.921 INFO kablam!     |         ^^^^^ help: consider using `_count` instead
Oct 12 20:52:30.921 INFO kablam! 
Oct 12 20:52:30.956 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:52:30.956 INFO kablam!   --> src/main.rs:10:9
Oct 12 20:52:30.956 INFO kablam!    |
Oct 12 20:52:30.956 INFO kablam! 10 |     let mut age: i32 = 40;
Oct 12 20:52:30.956 INFO kablam!    |         ----^^^
Oct 12 20:52:30.956 INFO kablam!    |         |
Oct 12 20:52:30.956 INFO kablam!    |         help: remove this `mut`
Oct 12 20:52:30.956 INFO kablam!    |
Oct 12 20:52:30.956 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 20:52:30.956 INFO kablam! 
Oct 12 20:52:30.956 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:52:30.956 INFO kablam!   --> src/main.rs:52:9
Oct 12 20:52:30.956 INFO kablam!    |
Oct 12 20:52:30.956 INFO kablam! 52 |     let mut neg_4 = -4i32;
Oct 12 20:52:30.956 INFO kablam!    |         ----^^^^^
Oct 12 20:52:30.956 INFO kablam!    |         |
Oct 12 20:52:30.956 INFO kablam!    |         help: remove this `mut`
Oct 12 20:52:30.957 INFO kablam! 
Oct 12 20:52:31.045 INFO kablam! warning: unused variable: `num`
Oct 12 20:52:31.045 INFO kablam!  --> src/main.rs:8:9
Oct 12 20:52:31.045 INFO kablam!   |
Oct 12 20:52:31.045 INFO kablam! 8 |     let num = 10;
Oct 12 20:52:31.045 INFO kablam!   |         ^^^ help: consider using `_num` instead
Oct 12 20:52:31.045 INFO kablam!   |
Oct 12 20:52:31.046 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 12 20:52:31.046 INFO kablam! 
Oct 12 20:52:31.046 INFO kablam! warning: unused variable: `f_name`
Oct 12 20:52:31.046 INFO kablam!   --> src/main.rs:34:10
Oct 12 20:52:31.046 INFO kablam!    |
Oct 12 20:52:31.046 INFO kablam! 34 |     let (f_name, l_name) = ("Derek", "Banas");
Oct 12 20:52:31.046 INFO kablam!    |          ^^^^^^ help: consider using `_f_name` instead
Oct 12 20:52:31.046 INFO kablam! 
Oct 12 20:52:31.046 INFO kablam! warning: unused variable: `l_name`
Oct 12 20:52:31.046 INFO kablam!   --> src/main.rs:34:18
Oct 12 20:52:31.046 INFO kablam!    |
Oct 12 20:52:31.046 INFO kablam! 34 |     let (f_name, l_name) = ("Derek", "Banas");
Oct 12 20:52:31.046 INFO kablam!    |                  ^^^^^^ help: consider using `_l_name` instead
Oct 12 20:52:31.046 INFO kablam! 
Oct 12 20:52:31.046 INFO kablam! warning: unused variable: `count`
Oct 12 20:52:31.046 INFO kablam!    --> src/main.rs:116:9
Oct 12 20:52:31.046 INFO kablam!     |
Oct 12 20:52:31.046 INFO kablam! 116 |     let count = rand_string.chars().count();
Oct 12 20:52:31.046 INFO kablam!     |         ^^^^^ help: consider using `_count` instead
Oct 12 20:52:31.046 INFO kablam! 
Oct 12 20:52:31.094 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:52:31.094 INFO kablam!   --> src/main.rs:10:9
Oct 12 20:52:31.094 INFO kablam!    |
Oct 12 20:52:31.094 INFO kablam! 10 |     let mut age: i32 = 40;
Oct 12 20:52:31.104 INFO kablam!    |         ----^^^
Oct 12 20:52:31.104 INFO kablam!    |         |
Oct 12 20:52:31.104 INFO kablam!    |         help: remove this `mut`
Oct 12 20:52:31.104 INFO kablam!    |
Oct 12 20:52:31.104 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 20:52:31.104 INFO kablam! 
Oct 12 20:52:31.104 INFO kablam! warning: variable does not need to be mutable
Oct 12 20:52:31.104 INFO kablam!   --> src/main.rs:52:9
Oct 12 20:52:31.104 INFO kablam!    |
Oct 12 20:52:31.104 INFO kablam! 52 |     let mut neg_4 = -4i32;
Oct 12 20:52:31.104 INFO kablam!    |         ----^^^^^
Oct 12 20:52:31.104 INFO kablam!    |         |
Oct 12 20:52:31.104 INFO kablam!    |         help: remove this `mut`
Oct 12 20:52:31.104 INFO kablam! 
Oct 12 20:52:31.128 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
Oct 12 20:52:31.128 INFO kablam! su: No module specific data is present
Oct 12 20:52:32.011 INFO running `"docker" "rm" "-f" "292aa98f8cca80ed963fae102b7ca514a1f719ea94b51017147c6b4c11a47d11"`
Oct 12 20:52:32.226 INFO blam! 292aa98f8cca80ed963fae102b7ca514a1f719ea94b51017147c6b4c11a47d11