Dec 13 17:51:09.060 INFO testing halcyon/rust_tut against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 17:51:09.060 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 13 17:51:09.568 INFO [stdout] 44284249f2568b866c741d143924db77acab658f53c7da54751093e17363a5d4
Dec 13 17:51:09.571 INFO running `"docker" "start" "-a" "44284249f2568b866c741d143924db77acab658f53c7da54751093e17363a5d4"`
Dec 13 17:51:10.442 INFO [stderr] usermod: no changes
Dec 13 17:51:10.479 INFO [stderr]    Compiling rust_tut v0.1.0 (/source)
Dec 13 17:51:10.755 INFO [stderr] warning: unused imports: `u16`, `u32`, `u64`, `u8`
Dec 13 17:51:10.755 INFO [stderr]  --> src/main.rs:1:30
Dec 13 17:51:10.755 INFO [stderr]   |
Dec 13 17:51:10.755 INFO [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64};
Dec 13 17:51:10.755 INFO [stderr]   |                              ^^  ^^^  ^^^  ^^^
Dec 13 17:51:10.755 INFO [stderr]   |
Dec 13 17:51:10.755 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 17:51:10.755 INFO [stderr] 
Dec 13 17:51:10.755 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 13 17:51:10.755 INFO [stderr]   --> src/main.rs:62:8
Dec 13 17:51:10.755 INFO [stderr]    |
Dec 13 17:51:10.755 INFO [stderr] 62 |     if (age_old == 5) {
Dec 13 17:51:10.755 INFO [stderr]    |        ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 13 17:51:10.755 INFO [stderr]    |
Dec 13 17:51:10.755 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 13 17:51:10.755 INFO [stderr] 
Dec 13 17:51:10.755 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 13 17:51:10.755 INFO [stderr]   --> src/main.rs:78:23
Dec 13 17:51:10.755 INFO [stderr]    |
Dec 13 17:51:10.755 INFO [stderr] 78 |     let can_vote = if (age_old >= 18) { true } else { false };
Dec 13 17:51:10.755 INFO [stderr]    |                       ^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 13 17:51:10.755 INFO [stderr] 
Dec 13 17:51:10.755 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 13 17:51:10.755 INFO [stderr]   --> src/main.rs:85:12
Dec 13 17:51:10.755 INFO [stderr]    |
Dec 13 17:51:10.755 INFO [stderr] 85 |         if ((x % 2) == 0) {
Dec 13 17:51:10.755 INFO [stderr]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 13 17:51:10.755 INFO [stderr] 
Dec 13 17:51:10.755 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 13 17:51:10.755 INFO [stderr]   --> src/main.rs:90:12
Dec 13 17:51:10.755 INFO [stderr]    |
Dec 13 17:51:10.755 INFO [stderr] 90 |         if (x > 10) {
Dec 13 17:51:10.755 INFO [stderr]    |            ^^^^^^^^ help: remove these parentheses
Dec 13 17:51:10.755 INFO [stderr] 
Dec 13 17:51:10.910 INFO [stderr] warning: unused variable: `num`
Dec 13 17:51:10.910 INFO [stderr]  --> src/main.rs:8:9
Dec 13 17:51:10.910 INFO [stderr]   |
Dec 13 17:51:10.910 INFO [stderr] 8 |     let num = 10;
Dec 13 17:51:10.910 INFO [stderr]   |         ^^^ help: consider using `_num` instead
Dec 13 17:51:10.910 INFO [stderr]   |
Dec 13 17:51:10.910 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 13 17:51:10.910 INFO [stderr] 
Dec 13 17:51:10.910 INFO [stderr] warning: unused variable: `f_name`
Dec 13 17:51:10.910 INFO [stderr]   --> src/main.rs:34:10
Dec 13 17:51:10.910 INFO [stderr]    |
Dec 13 17:51:10.910 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 13 17:51:10.910 INFO [stderr]    |          ^^^^^^ help: consider using `_f_name` instead
Dec 13 17:51:10.910 INFO [stderr] 
Dec 13 17:51:10.910 INFO [stderr] warning: unused variable: `l_name`
Dec 13 17:51:10.910 INFO [stderr]   --> src/main.rs:34:18
Dec 13 17:51:10.910 INFO [stderr]    |
Dec 13 17:51:10.910 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 13 17:51:10.910 INFO [stderr]    |                  ^^^^^^ help: consider using `_l_name` instead
Dec 13 17:51:10.910 INFO [stderr] 
Dec 13 17:51:10.910 INFO [stderr] warning: unused variable: `count`
Dec 13 17:51:10.910 INFO [stderr]    --> src/main.rs:116:9
Dec 13 17:51:10.910 INFO [stderr]     |
Dec 13 17:51:10.910 INFO [stderr] 116 |     let count = rand_string.chars().count();
Dec 13 17:51:10.910 INFO [stderr]     |         ^^^^^ help: consider using `_count` instead
Dec 13 17:51:10.910 INFO [stderr] 
Dec 13 17:51:10.939 INFO [stderr] warning: variable does not need to be mutable
Dec 13 17:51:10.939 INFO [stderr]   --> src/main.rs:10:9
Dec 13 17:51:10.939 INFO [stderr]    |
Dec 13 17:51:10.939 INFO [stderr] 10 |     let mut age: i32 = 40;
Dec 13 17:51:10.939 INFO [stderr]    |         ----^^^
Dec 13 17:51:10.939 INFO [stderr]    |         |
Dec 13 17:51:10.939 INFO [stderr]    |         help: remove this `mut`
Dec 13 17:51:10.939 INFO [stderr]    |
Dec 13 17:51:10.939 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 17:51:10.939 INFO [stderr] 
Dec 13 17:51:10.939 INFO [stderr] warning: variable does not need to be mutable
Dec 13 17:51:10.939 INFO [stderr]   --> src/main.rs:52:9
Dec 13 17:51:10.939 INFO [stderr]    |
Dec 13 17:51:10.939 INFO [stderr] 52 |     let mut neg_4 = -4i32;
Dec 13 17:51:10.939 INFO [stderr]    |         ----^^^^^
Dec 13 17:51:10.939 INFO [stderr]    |         |
Dec 13 17:51:10.939 INFO [stderr]    |         help: remove this `mut`
Dec 13 17:51:10.939 INFO [stderr] 
Dec 13 17:51:11.485 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
Dec 13 17:51:11.487 INFO [stderr] su: No module specific data is present
Dec 13 17:51:11.892 INFO running `"docker" "inspect" "44284249f2568b866c741d143924db77acab658f53c7da54751093e17363a5d4"`
Dec 13 17:51:12.133 INFO running `"docker" "rm" "-f" "44284249f2568b866c741d143924db77acab658f53c7da54751093e17363a5d4"`
Dec 13 17:51:12.419 INFO [stdout] 44284249f2568b866c741d143924db77acab658f53c7da54751093e17363a5d4
Dec 13 17:51:12.421 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 13 17:51:12.918 INFO [stdout] 25db500723edfd0b48d6860711e470a7a7fb0c7db51f225eed7b23a56763ddb2
Dec 13 17:51:12.920 INFO running `"docker" "start" "-a" "25db500723edfd0b48d6860711e470a7a7fb0c7db51f225eed7b23a56763ddb2"`
Dec 13 17:51:13.595 INFO [stderr] usermod: no changes
Dec 13 17:51:13.651 INFO [stderr]    Compiling rust_tut v0.1.0 (/source)
Dec 13 17:51:14.235 INFO [stderr] warning: unused imports: `u16`, `u32`, `u64`, `u8`
Dec 13 17:51:14.235 INFO [stderr]  --> src/main.rs:1:30
Dec 13 17:51:14.235 INFO [stderr]   |
Dec 13 17:51:14.235 INFO [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, isize, usize, f32, f64};
Dec 13 17:51:14.235 INFO [stderr]   |                              ^^  ^^^  ^^^  ^^^
Dec 13 17:51:14.235 INFO [stderr]   |
Dec 13 17:51:14.235 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 17:51:14.235 INFO [stderr] 
Dec 13 17:51:14.235 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 13 17:51:14.235 INFO [stderr]   --> src/main.rs:62:8
Dec 13 17:51:14.235 INFO [stderr]    |
Dec 13 17:51:14.235 INFO [stderr] 62 |     if (age_old == 5) {
Dec 13 17:51:14.235 INFO [stderr]    |        ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 13 17:51:14.235 INFO [stderr]    |
Dec 13 17:51:14.235 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 13 17:51:14.235 INFO [stderr] 
Dec 13 17:51:14.235 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 13 17:51:14.235 INFO [stderr]   --> src/main.rs:78:23
Dec 13 17:51:14.235 INFO [stderr]    |
Dec 13 17:51:14.235 INFO [stderr] 78 |     let can_vote = if (age_old >= 18) { true } else { false };
Dec 13 17:51:14.235 INFO [stderr]    |                       ^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 13 17:51:14.235 INFO [stderr] 
Dec 13 17:51:14.235 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 13 17:51:14.235 INFO [stderr]   --> src/main.rs:85:12
Dec 13 17:51:14.235 INFO [stderr]    |
Dec 13 17:51:14.235 INFO [stderr] 85 |         if ((x % 2) == 0) {
Dec 13 17:51:14.235 INFO [stderr]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
Dec 13 17:51:14.235 INFO [stderr] 
Dec 13 17:51:14.235 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 13 17:51:14.235 INFO [stderr]   --> src/main.rs:90:12
Dec 13 17:51:14.235 INFO [stderr]    |
Dec 13 17:51:14.235 INFO [stderr] 90 |         if (x > 10) {
Dec 13 17:51:14.235 INFO [stderr]    |            ^^^^^^^^ help: remove these parentheses
Dec 13 17:51:14.235 INFO [stderr] 
Dec 13 17:51:14.395 INFO [stderr] warning: unused variable: `num`
Dec 13 17:51:14.395 INFO [stderr]  --> src/main.rs:8:9
Dec 13 17:51:14.395 INFO [stderr]   |
Dec 13 17:51:14.395 INFO [stderr] 8 |     let num = 10;
Dec 13 17:51:14.395 INFO [stderr]   |         ^^^ help: consider using `_num` instead
Dec 13 17:51:14.395 INFO [stderr]   |
Dec 13 17:51:14.395 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 13 17:51:14.395 INFO [stderr] 
Dec 13 17:51:14.395 INFO [stderr] warning: unused variable: `f_name`
Dec 13 17:51:14.395 INFO [stderr]   --> src/main.rs:34:10
Dec 13 17:51:14.395 INFO [stderr]    |
Dec 13 17:51:14.395 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 13 17:51:14.395 INFO [stderr]    |          ^^^^^^ help: consider using `_f_name` instead
Dec 13 17:51:14.395 INFO [stderr] 
Dec 13 17:51:14.395 INFO [stderr] warning: unused variable: `l_name`
Dec 13 17:51:14.395 INFO [stderr]   --> src/main.rs:34:18
Dec 13 17:51:14.395 INFO [stderr]    |
Dec 13 17:51:14.395 INFO [stderr] 34 |     let (f_name, l_name) = ("Derek", "Banas");
Dec 13 17:51:14.395 INFO [stderr]    |                  ^^^^^^ help: consider using `_l_name` instead
Dec 13 17:51:14.395 INFO [stderr] 
Dec 13 17:51:14.395 INFO [stderr] warning: unused variable: `count`
Dec 13 17:51:14.395 INFO [stderr]    --> src/main.rs:116:9
Dec 13 17:51:14.395 INFO [stderr]     |
Dec 13 17:51:14.395 INFO [stderr] 116 |     let count = rand_string.chars().count();
Dec 13 17:51:14.395 INFO [stderr]     |         ^^^^^ help: consider using `_count` instead
Dec 13 17:51:14.395 INFO [stderr] 
Dec 13 17:51:14.432 INFO [stderr] warning: variable does not need to be mutable
Dec 13 17:51:14.433 INFO [stderr]   --> src/main.rs:10:9
Dec 13 17:51:14.433 INFO [stderr]    |
Dec 13 17:51:14.433 INFO [stderr] 10 |     let mut age: i32 = 40;
Dec 13 17:51:14.433 INFO [stderr]    |         ----^^^
Dec 13 17:51:14.433 INFO [stderr]    |         |
Dec 13 17:51:14.433 INFO [stderr]    |         help: remove this `mut`
Dec 13 17:51:14.433 INFO [stderr]    |
Dec 13 17:51:14.433 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 17:51:14.433 INFO [stderr] 
Dec 13 17:51:14.433 INFO [stderr] warning: variable does not need to be mutable
Dec 13 17:51:14.433 INFO [stderr]   --> src/main.rs:52:9
Dec 13 17:51:14.433 INFO [stderr]    |
Dec 13 17:51:14.433 INFO [stderr] 52 |     let mut neg_4 = -4i32;
Dec 13 17:51:14.433 INFO [stderr]    |         ----^^^^^
Dec 13 17:51:14.433 INFO [stderr]    |         |
Dec 13 17:51:14.433 INFO [stderr]    |         help: remove this `mut`
Dec 13 17:51:14.433 INFO [stderr] 
Dec 13 17:51:14.821 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
Dec 13 17:51:14.821 INFO [stderr] su: No module specific data is present
Dec 13 17:51:15.547 INFO running `"docker" "inspect" "25db500723edfd0b48d6860711e470a7a7fb0c7db51f225eed7b23a56763ddb2"`
Dec 13 17:51:15.796 INFO running `"docker" "rm" "-f" "25db500723edfd0b48d6860711e470a7a7fb0c7db51f225eed7b23a56763ddb2"`
Dec 13 17:51:16.059 INFO [stdout] 25db500723edfd0b48d6860711e470a7a7fb0c7db51f225eed7b23a56763ddb2
Dec 13 17:51:16.067 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 13 17:51:16.487 INFO [stdout] c1a8c231e353d3402fc05508fcc9a7448b4f78c38b1701117b70343491723f6b
Dec 13 17:51:16.495 INFO running `"docker" "start" "-a" "c1a8c231e353d3402fc05508fcc9a7448b4f78c38b1701117b70343491723f6b"`
Dec 13 17:51:18.127 INFO [stderr] usermod: no changes
Dec 13 17:51:18.223 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
Dec 13 17:51:18.227 INFO [stderr]      Running /target/debug/deps/rust_tut-86af4fc5d9a85135
Dec 13 17:51:18.228 INFO [stdout] 
Dec 13 17:51:18.228 INFO [stdout] running 0 tests
Dec 13 17:51:18.228 INFO [stdout] 
Dec 13 17:51:18.228 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 17:51:18.228 INFO [stdout] 
Dec 13 17:51:18.232 INFO [stderr] su: No module specific data is present
Dec 13 17:51:19.271 INFO running `"docker" "inspect" "c1a8c231e353d3402fc05508fcc9a7448b4f78c38b1701117b70343491723f6b"`
Dec 13 17:51:19.480 INFO running `"docker" "rm" "-f" "c1a8c231e353d3402fc05508fcc9a7448b4f78c38b1701117b70343491723f6b"`
Dec 13 17:51:19.795 INFO [stdout] c1a8c231e353d3402fc05508fcc9a7448b4f78c38b1701117b70343491723f6b