Dec 19 16:14:51.955 INFO checking halcyon/rust_tut against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 16:14:51.955 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/halcyon/rust_tut:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 16:14:52.332 INFO [stdout] cf3e3e9c3f72a54d2f46d5360fb328ef9131c3933101baa5a7eb5984e6626987
Dec 19 16:14:52.340 INFO running `"docker" "start" "-a" "cf3e3e9c3f72a54d2f46d5360fb328ef9131c3933101baa5a7eb5984e6626987"`
Dec 19 16:14:53.322 INFO [stderr]     Checking rust_tut v0.1.0 (/opt/crater/workdir)
Dec 19 16:14:53.534 INFO [stderr] warning: unused imports: `u16`, `u32`, `u64`, `u8`
Dec 19 16:14:53.535 INFO [stderr]  --> src/main.rs:1:30
Dec 19 16:14:53.535 INFO [stderr]   |
Dec 19 16:14:53.535 INFO [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64};
Dec 19 16:14:53.535 INFO [stderr]   |                              ^^  ^^^  ^^^  ^^^
Dec 19 16:14:53.535 INFO [stderr]   |
Dec 19 16:14:53.535 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:14:53.535 INFO [stderr] 
Dec 19 16:14:53.535 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:14:53.535 INFO [stderr]   --> src/main.rs:62:8
Dec 19 16:14:53.535 INFO [stderr]    |
Dec 19 16:14:53.535 INFO [stderr] 62 |     if (age_old == 5) {
Dec 19 16:14:53.535 INFO [stderr]    |        ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 16:14:53.535 INFO [stderr]    |
Dec 19 16:14:53.535 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 16:14:53.535 INFO [stderr] 
Dec 19 16:14:53.535 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:14:53.535 INFO [stderr]   --> src/main.rs:78:23
Dec 19 16:14:53.535 INFO [stderr]    |
Dec 19 16:14:53.535 INFO [stderr] 78 |     let can_vote = if (age_old >= 18) { true } else { false };
Dec 19 16:14:53.535 INFO [stderr]    |                       ^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 16:14:53.535 INFO [stderr] 
Dec 19 16:14:53.535 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:14:53.535 INFO [stderr]   --> src/main.rs:85:12
Dec 19 16:14:53.535 INFO [stderr]    |
Dec 19 16:14:53.535 INFO [stderr] 85 |         if ((x % 2) == 0) {
Dec 19 16:14:53.536 INFO [stderr]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 16:14:53.536 INFO [stderr] 
Dec 19 16:14:53.536 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:14:53.536 INFO [stderr]   --> src/main.rs:90:12
Dec 19 16:14:53.536 INFO [stderr]    |
Dec 19 16:14:53.536 INFO [stderr] 90 |         if (x > 10) {
Dec 19 16:14:53.536 INFO [stderr]    |            ^^^^^^^^ help: remove these parentheses
Dec 19 16:14:53.536 INFO [stderr] 
Dec 19 16:14:53.656 INFO [stderr] warning: unused imports: `u16`, `u32`, `u64`, `u8`
Dec 19 16:14:53.656 INFO [stderr]  --> src/main.rs:1:30
Dec 19 16:14:53.656 INFO [stderr]   |
Dec 19 16:14:53.656 INFO [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64};
Dec 19 16:14:53.656 INFO [stderr]   |                              ^^  ^^^  ^^^  ^^^
Dec 19 16:14:53.656 INFO [stderr]   |
Dec 19 16:14:53.656 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:14:53.656 INFO [stderr] 
Dec 19 16:14:53.656 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:14:53.656 INFO [stderr]   --> src/main.rs:62:8
Dec 19 16:14:53.656 INFO [stderr]    |
Dec 19 16:14:53.656 INFO [stderr] 62 |     if (age_old == 5) {
Dec 19 16:14:53.656 INFO [stderr]    |        ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 16:14:53.656 INFO [stderr]    |
Dec 19 16:14:53.656 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 16:14:53.656 INFO [stderr] 
Dec 19 16:14:53.656 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:14:53.656 INFO [stderr]   --> src/main.rs:78:23
Dec 19 16:14:53.656 INFO [stderr]    |
Dec 19 16:14:53.656 INFO [stderr] 78 |     let can_vote = if (age_old >= 18) { true } else { false };
Dec 19 16:14:53.656 INFO [stderr]    |                       ^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 16:14:53.656 INFO [stderr] 
Dec 19 16:14:53.656 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:14:53.656 INFO [stderr]   --> src/main.rs:85:12
Dec 19 16:14:53.656 INFO [stderr]    |
Dec 19 16:14:53.656 INFO [stderr] 85 |         if ((x % 2) == 0) {
Dec 19 16:14:53.656 INFO [stderr]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 16:14:53.656 INFO [stderr] 
Dec 19 16:14:53.656 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:14:53.656 INFO [stderr]   --> src/main.rs:90:12
Dec 19 16:14:53.656 INFO [stderr]    |
Dec 19 16:14:53.656 INFO [stderr] 90 |         if (x > 10) {
Dec 19 16:14:53.656 INFO [stderr]    |            ^^^^^^^^ help: remove these parentheses
Dec 19 16:14:53.656 INFO [stderr] 
Dec 19 16:14:53.742 INFO [stderr] warning: unused variable: `num`
Dec 19 16:14:53.742 INFO [stderr]  --> src/main.rs:8:9
Dec 19 16:14:53.742 INFO [stderr]   |
Dec 19 16:14:53.742 INFO [stderr] 8 |     let num = 10;
Dec 19 16:14:53.742 INFO [stderr]   |         ^^^ help: consider using `_num` instead
Dec 19 16:14:53.742 INFO [stderr]   |
Dec 19 16:14:53.742 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 19 16:14:53.742 INFO [stderr] 
Dec 19 16:14:53.742 INFO [stderr] warning: unused variable: `f_name`
Dec 19 16:14:53.742 INFO [stderr]   --> src/main.rs:34:10
Dec 19 16:14:53.742 INFO [stderr]    |
Dec 19 16:14:53.742 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 19 16:14:53.742 INFO [stderr]    |          ^^^^^^ help: consider using `_f_name` instead
Dec 19 16:14:53.742 INFO [stderr] 
Dec 19 16:14:53.742 INFO [stderr] warning: unused variable: `l_name`
Dec 19 16:14:53.742 INFO [stderr]   --> src/main.rs:34:18
Dec 19 16:14:53.742 INFO [stderr]    |
Dec 19 16:14:53.742 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 19 16:14:53.742 INFO [stderr]    |                  ^^^^^^ help: consider using `_l_name` instead
Dec 19 16:14:53.742 INFO [stderr] 
Dec 19 16:14:53.742 INFO [stderr] warning: unused variable: `count`
Dec 19 16:14:53.742 INFO [stderr]    --> src/main.rs:116:9
Dec 19 16:14:53.742 INFO [stderr]     |
Dec 19 16:14:53.742 INFO [stderr] 116 |     let count = rand_string.chars().count();
Dec 19 16:14:53.742 INFO [stderr]     |         ^^^^^ help: consider using `_count` instead
Dec 19 16:14:53.742 INFO [stderr] 
Dec 19 16:14:53.772 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:14:53.772 INFO [stderr]   --> src/main.rs:10:9
Dec 19 16:14:53.772 INFO [stderr]    |
Dec 19 16:14:53.772 INFO [stderr] 10 |     let mut age: i32 = 40;
Dec 19 16:14:53.772 INFO [stderr]    |         ----^^^
Dec 19 16:14:53.772 INFO [stderr]    |         |
Dec 19 16:14:53.772 INFO [stderr]    |         help: remove this `mut`
Dec 19 16:14:53.772 INFO [stderr]    |
Dec 19 16:14:53.772 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 16:14:53.772 INFO [stderr] 
Dec 19 16:14:53.772 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:14:53.772 INFO [stderr]   --> src/main.rs:52:9
Dec 19 16:14:53.772 INFO [stderr]    |
Dec 19 16:14:53.772 INFO [stderr] 52 |     let mut neg_4 = -4i32;
Dec 19 16:14:53.772 INFO [stderr]    |         ----^^^^^
Dec 19 16:14:53.772 INFO [stderr]    |         |
Dec 19 16:14:53.772 INFO [stderr]    |         help: remove this `mut`
Dec 19 16:14:53.772 INFO [stderr] 
Dec 19 16:14:53.790 INFO [stderr] warning: unused variable: `num`
Dec 19 16:14:53.790 INFO [stderr]  --> src/main.rs:8:9
Dec 19 16:14:53.790 INFO [stderr]   |
Dec 19 16:14:53.790 INFO [stderr] 8 |     let num = 10;
Dec 19 16:14:53.790 INFO [stderr]   |         ^^^ help: consider using `_num` instead
Dec 19 16:14:53.790 INFO [stderr]   |
Dec 19 16:14:53.790 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 19 16:14:53.790 INFO [stderr] 
Dec 19 16:14:53.790 INFO [stderr] warning: unused variable: `f_name`
Dec 19 16:14:53.790 INFO [stderr]   --> src/main.rs:34:10
Dec 19 16:14:53.790 INFO [stderr]    |
Dec 19 16:14:53.790 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 19 16:14:53.790 INFO [stderr]    |          ^^^^^^ help: consider using `_f_name` instead
Dec 19 16:14:53.790 INFO [stderr] 
Dec 19 16:14:53.790 INFO [stderr] warning: unused variable: `l_name`
Dec 19 16:14:53.790 INFO [stderr]   --> src/main.rs:34:18
Dec 19 16:14:53.790 INFO [stderr]    |
Dec 19 16:14:53.790 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 19 16:14:53.790 INFO [stderr]    |                  ^^^^^^ help: consider using `_l_name` instead
Dec 19 16:14:53.790 INFO [stderr] 
Dec 19 16:14:53.790 INFO [stderr] warning: unused variable: `count`
Dec 19 16:14:53.790 INFO [stderr]    --> src/main.rs:116:9
Dec 19 16:14:53.790 INFO [stderr]     |
Dec 19 16:14:53.790 INFO [stderr] 116 |     let count = rand_string.chars().count();
Dec 19 16:14:53.790 INFO [stderr]     |         ^^^^^ help: consider using `_count` instead
Dec 19 16:14:53.791 INFO [stderr] 
Dec 19 16:14:53.828 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:14:53.828 INFO [stderr]   --> src/main.rs:10:9
Dec 19 16:14:53.828 INFO [stderr]    |
Dec 19 16:14:53.828 INFO [stderr] 10 |     let mut age: i32 = 40;
Dec 19 16:14:53.828 INFO [stderr]    |         ----^^^
Dec 19 16:14:53.828 INFO [stderr]    |         |
Dec 19 16:14:53.828 INFO [stderr]    |         help: remove this `mut`
Dec 19 16:14:53.828 INFO [stderr]    |
Dec 19 16:14:53.828 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 16:14:53.828 INFO [stderr] 
Dec 19 16:14:53.829 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:14:53.829 INFO [stderr]   --> src/main.rs:52:9
Dec 19 16:14:53.829 INFO [stderr]    |
Dec 19 16:14:53.829 INFO [stderr] 52 |     let mut neg_4 = -4i32;
Dec 19 16:14:53.829 INFO [stderr]    |         ----^^^^^
Dec 19 16:14:53.829 INFO [stderr]    |         |
Dec 19 16:14:53.829 INFO [stderr]    |         help: remove this `mut`
Dec 19 16:14:53.829 INFO [stderr] 
Dec 19 16:14:53.842 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
Dec 19 16:14:54.188 INFO running `"docker" "inspect" "cf3e3e9c3f72a54d2f46d5360fb328ef9131c3933101baa5a7eb5984e6626987"`
Dec 19 16:14:54.346 INFO running `"docker" "rm" "-f" "cf3e3e9c3f72a54d2f46d5360fb328ef9131c3933101baa5a7eb5984e6626987"`
Dec 19 16:14:54.600 INFO [stdout] cf3e3e9c3f72a54d2f46d5360fb328ef9131c3933101baa5a7eb5984e6626987