Dec 17 23:27:27.131 INFO checking halcyon/rust_tut against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 23:27:27.131 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 23:27:27.516 INFO [stdout] 414b4328c567c4313c037c671cd0b14af5a693930f19f37bc91abcab30349898
Dec 17 23:27:27.516 INFO running `"docker" "start" "-a" "414b4328c567c4313c037c671cd0b14af5a693930f19f37bc91abcab30349898"`
Dec 17 23:27:29.304 INFO [stderr]     Checking rust_tut v0.1.0 (/opt/crater/workdir)
Dec 17 23:27:29.664 INFO [stderr] warning: unused imports: `u16`, `u32`, `u64`, `u8`
Dec 17 23:27:29.664 INFO [stderr]  --> src/main.rs:1:30
Dec 17 23:27:29.664 INFO [stderr]   |
Dec 17 23:27:29.664 INFO [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64};
Dec 17 23:27:29.664 INFO [stderr]   |                              ^^  ^^^  ^^^  ^^^
Dec 17 23:27:29.664 INFO [stderr]   |
Dec 17 23:27:29.664 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 23:27:29.664 INFO [stderr] 
Dec 17 23:27:29.664 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 17 23:27:29.664 INFO [stderr]   --> src/main.rs:62:8
Dec 17 23:27:29.664 INFO [stderr]    |
Dec 17 23:27:29.664 INFO [stderr] 62 |     if (age_old == 5) {
Dec 17 23:27:29.664 INFO [stderr]    |        ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 17 23:27:29.664 INFO [stderr]    |
Dec 17 23:27:29.664 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 17 23:27:29.664 INFO [stderr] 
Dec 17 23:27:29.664 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 17 23:27:29.665 INFO [stderr]   --> src/main.rs:78:23
Dec 17 23:27:29.665 INFO [stderr]    |
Dec 17 23:27:29.665 INFO [stderr] 78 |     let can_vote = if (age_old >= 18) { true } else { false };
Dec 17 23:27:29.665 INFO [stderr]    |                       ^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 17 23:27:29.665 INFO [stderr] 
Dec 17 23:27:29.665 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 17 23:27:29.665 INFO [stderr]   --> src/main.rs:85:12
Dec 17 23:27:29.665 INFO [stderr]    |
Dec 17 23:27:29.665 INFO [stderr] 85 |         if ((x % 2) == 0) {
Dec 17 23:27:29.665 INFO [stderr]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 17 23:27:29.665 INFO [stderr] 
Dec 17 23:27:29.665 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 17 23:27:29.665 INFO [stderr]   --> src/main.rs:90:12
Dec 17 23:27:29.665 INFO [stderr]    |
Dec 17 23:27:29.665 INFO [stderr] 90 |         if (x > 10) {
Dec 17 23:27:29.665 INFO [stderr]    |            ^^^^^^^^ help: remove these parentheses
Dec 17 23:27:29.665 INFO [stderr] 
Dec 17 23:27:29.672 INFO [stderr] warning: unused imports: `u16`, `u32`, `u64`, `u8`
Dec 17 23:27:29.672 INFO [stderr]  --> src/main.rs:1:30
Dec 17 23:27:29.672 INFO [stderr]   |
Dec 17 23:27:29.672 INFO [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64};
Dec 17 23:27:29.672 INFO [stderr]   |                              ^^  ^^^  ^^^  ^^^
Dec 17 23:27:29.672 INFO [stderr]   |
Dec 17 23:27:29.672 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 23:27:29.673 INFO [stderr] 
Dec 17 23:27:29.673 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 17 23:27:29.673 INFO [stderr]   --> src/main.rs:62:8
Dec 17 23:27:29.673 INFO [stderr]    |
Dec 17 23:27:29.673 INFO [stderr] 62 |     if (age_old == 5) {
Dec 17 23:27:29.673 INFO [stderr]    |        ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 17 23:27:29.673 INFO [stderr]    |
Dec 17 23:27:29.673 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 17 23:27:29.673 INFO [stderr] 
Dec 17 23:27:29.673 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 17 23:27:29.673 INFO [stderr]   --> src/main.rs:78:23
Dec 17 23:27:29.673 INFO [stderr]    |
Dec 17 23:27:29.673 INFO [stderr] 78 |     let can_vote = if (age_old >= 18) { true } else { false };
Dec 17 23:27:29.673 INFO [stderr]    |                       ^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 17 23:27:29.673 INFO [stderr] 
Dec 17 23:27:29.673 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 17 23:27:29.673 INFO [stderr]   --> src/main.rs:85:12
Dec 17 23:27:29.673 INFO [stderr]    |
Dec 17 23:27:29.673 INFO [stderr] 85 |         if ((x % 2) == 0) {
Dec 17 23:27:29.673 INFO [stderr]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 17 23:27:29.673 INFO [stderr] 
Dec 17 23:27:29.673 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 17 23:27:29.673 INFO [stderr]   --> src/main.rs:90:12
Dec 17 23:27:29.673 INFO [stderr]    |
Dec 17 23:27:29.673 INFO [stderr] 90 |         if (x > 10) {
Dec 17 23:27:29.673 INFO [stderr]    |            ^^^^^^^^ help: remove these parentheses
Dec 17 23:27:29.673 INFO [stderr] 
Dec 17 23:27:29.988 INFO [stderr] warning: unused variable: `num`
Dec 17 23:27:29.988 INFO [stderr]  --> src/main.rs:8:9
Dec 17 23:27:29.988 INFO [stderr]   |
Dec 17 23:27:29.988 INFO [stderr] 8 |     let num = 10;
Dec 17 23:27:29.988 INFO [stderr]   |         ^^^ help: consider using `_num` instead
Dec 17 23:27:29.988 INFO [stderr]   |
Dec 17 23:27:29.988 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 17 23:27:29.988 INFO [stderr] 
Dec 17 23:27:29.988 INFO [stderr] warning: unused variable: `f_name`
Dec 17 23:27:29.988 INFO [stderr]   --> src/main.rs:34:10
Dec 17 23:27:29.988 INFO [stderr]    |
Dec 17 23:27:29.988 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 17 23:27:29.988 INFO [stderr]    |          ^^^^^^ help: consider using `_f_name` instead
Dec 17 23:27:29.988 INFO [stderr] 
Dec 17 23:27:29.988 INFO [stderr] warning: unused variable: `l_name`
Dec 17 23:27:29.988 INFO [stderr]   --> src/main.rs:34:18
Dec 17 23:27:29.988 INFO [stderr]    |
Dec 17 23:27:29.988 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 17 23:27:29.989 INFO [stderr]    |                  ^^^^^^ help: consider using `_l_name` instead
Dec 17 23:27:29.989 INFO [stderr] 
Dec 17 23:27:29.989 INFO [stderr] warning: unused variable: `count`
Dec 17 23:27:29.989 INFO [stderr]    --> src/main.rs:116:9
Dec 17 23:27:29.989 INFO [stderr]     |
Dec 17 23:27:29.989 INFO [stderr] 116 |     let count = rand_string.chars().count();
Dec 17 23:27:29.989 INFO [stderr]     |         ^^^^^ help: consider using `_count` instead
Dec 17 23:27:29.989 INFO [stderr] 
Dec 17 23:27:30.071 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:27:30.071 INFO [stderr]   --> src/main.rs:10:9
Dec 17 23:27:30.071 INFO [stderr]    |
Dec 17 23:27:30.071 INFO [stderr] 10 |     let mut age: i32 = 40;
Dec 17 23:27:30.071 INFO [stderr]    |         ----^^^
Dec 17 23:27:30.071 INFO [stderr]    |         |
Dec 17 23:27:30.071 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:27:30.071 INFO [stderr]    |
Dec 17 23:27:30.071 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 23:27:30.071 INFO [stderr] 
Dec 17 23:27:30.071 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:27:30.071 INFO [stderr]   --> src/main.rs:52:9
Dec 17 23:27:30.071 INFO [stderr]    |
Dec 17 23:27:30.071 INFO [stderr] 52 |     let mut neg_4 = -4i32;
Dec 17 23:27:30.071 INFO [stderr]    |         ----^^^^^
Dec 17 23:27:30.071 INFO [stderr]    |         |
Dec 17 23:27:30.071 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:27:30.071 INFO [stderr] 
Dec 17 23:27:30.156 INFO [stderr] warning: unused variable: `num`
Dec 17 23:27:30.156 INFO [stderr]  --> src/main.rs:8:9
Dec 17 23:27:30.156 INFO [stderr]   |
Dec 17 23:27:30.156 INFO [stderr] 8 |     let num = 10;
Dec 17 23:27:30.156 INFO [stderr]   |         ^^^ help: consider using `_num` instead
Dec 17 23:27:30.156 INFO [stderr]   |
Dec 17 23:27:30.156 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 17 23:27:30.156 INFO [stderr] 
Dec 17 23:27:30.156 INFO [stderr] warning: unused variable: `f_name`
Dec 17 23:27:30.156 INFO [stderr]   --> src/main.rs:34:10
Dec 17 23:27:30.156 INFO [stderr]    |
Dec 17 23:27:30.156 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 17 23:27:30.156 INFO [stderr]    |          ^^^^^^ help: consider using `_f_name` instead
Dec 17 23:27:30.156 INFO [stderr] 
Dec 17 23:27:30.156 INFO [stderr] warning: unused variable: `l_name`
Dec 17 23:27:30.156 INFO [stderr]   --> src/main.rs:34:18
Dec 17 23:27:30.156 INFO [stderr]    |
Dec 17 23:27:30.156 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 17 23:27:30.156 INFO [stderr]    |                  ^^^^^^ help: consider using `_l_name` instead
Dec 17 23:27:30.156 INFO [stderr] 
Dec 17 23:27:30.156 INFO [stderr] warning: unused variable: `count`
Dec 17 23:27:30.156 INFO [stderr]    --> src/main.rs:116:9
Dec 17 23:27:30.156 INFO [stderr]     |
Dec 17 23:27:30.157 INFO [stderr] 116 |     let count = rand_string.chars().count();
Dec 17 23:27:30.157 INFO [stderr]     |         ^^^^^ help: consider using `_count` instead
Dec 17 23:27:30.157 INFO [stderr] 
Dec 17 23:27:30.216 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:27:30.216 INFO [stderr]   --> src/main.rs:10:9
Dec 17 23:27:30.216 INFO [stderr]    |
Dec 17 23:27:30.216 INFO [stderr] 10 |     let mut age: i32 = 40;
Dec 17 23:27:30.216 INFO [stderr]    |         ----^^^
Dec 17 23:27:30.216 INFO [stderr]    |         |
Dec 17 23:27:30.216 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:27:30.216 INFO [stderr]    |
Dec 17 23:27:30.216 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 23:27:30.216 INFO [stderr] 
Dec 17 23:27:30.216 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:27:30.216 INFO [stderr]   --> src/main.rs:52:9
Dec 17 23:27:30.216 INFO [stderr]    |
Dec 17 23:27:30.216 INFO [stderr] 52 |     let mut neg_4 = -4i32;
Dec 17 23:27:30.216 INFO [stderr]    |         ----^^^^^
Dec 17 23:27:30.216 INFO [stderr]    |         |
Dec 17 23:27:30.216 INFO [stderr]    |         help: remove this `mut`
Dec 17 23:27:30.216 INFO [stderr] 
Dec 17 23:27:30.253 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
Dec 17 23:27:31.100 INFO running `"docker" "inspect" "414b4328c567c4313c037c671cd0b14af5a693930f19f37bc91abcab30349898"`
Dec 17 23:27:31.404 INFO running `"docker" "rm" "-f" "414b4328c567c4313c037c671cd0b14af5a693930f19f37bc91abcab30349898"`
Dec 17 23:27:31.688 INFO [stdout] 414b4328c567c4313c037c671cd0b14af5a693930f19f37bc91abcab30349898