Dec 12 03:22:08.109 INFO checking ConceptsDemo/rust-example against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 03:22:08.109 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 03:22:08.482 INFO [stdout] a45bbbe3935027f3a0bc631352dac1bf421372ce8c48d6d16421e7feaa50f740
Dec 12 03:22:08.486 INFO running `"docker" "start" "-a" "a45bbbe3935027f3a0bc631352dac1bf421372ce8c48d6d16421e7feaa50f740"`
Dec 12 03:22:09.729 INFO [stderr] usermod: no changes
Dec 12 03:22:09.780 INFO [stderr]     Checking rust-example v0.1.0 (/source)
Dec 12 03:22:10.464 INFO [stderr] warning: unused imports: `f32`, `i16`, `i64`, `u16`, `u64`, `u8`, `usize`
Dec 12 03:22:10.464 INFO [stderr]  --> src/main.rs:1:15
Dec 12 03:22:10.464 INFO [stderr]   |
Dec 12 03:22:10.464 INFO [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, f32, f64, isize, usize};
Dec 12 03:22:10.464 INFO [stderr]   |               ^^^       ^^^  ^^  ^^^       ^^^  ^^^              ^^^^^
Dec 12 03:22:10.464 INFO [stderr]   |
Dec 12 03:22:10.464 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:22:10.464 INFO [stderr] 
Dec 12 03:22:10.568 INFO [stderr] warning: unused imports: `f32`, `i16`, `i64`, `u16`, `u64`, `u8`, `usize`
Dec 12 03:22:10.568 INFO [stderr]  --> src/main.rs:1:15
Dec 12 03:22:10.568 INFO [stderr]   |
Dec 12 03:22:10.568 INFO [stderr] 1 | use std::{i8, i16, i32, i64, u8, u16, u32, u64, f32, f64, isize, usize};
Dec 12 03:22:10.568 INFO [stderr]   |               ^^^       ^^^  ^^  ^^^       ^^^  ^^^              ^^^^^
Dec 12 03:22:10.568 INFO [stderr]   |
Dec 12 03:22:10.568 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 03:22:10.568 INFO [stderr] 
Dec 12 03:22:10.656 INFO [stderr] warning: unused variable: `age`
Dec 12 03:22:10.656 INFO [stderr]  --> src/main.rs:7:13
Dec 12 03:22:10.656 INFO [stderr]   |
Dec 12 03:22:10.656 INFO [stderr] 7 |     let mut age : u32 = 100; 
Dec 12 03:22:10.656 INFO [stderr]   |             ^^^ help: consider using `_age` instead
Dec 12 03:22:10.656 INFO [stderr]   |
Dec 12 03:22:10.656 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 03:22:10.656 INFO [stderr] 
Dec 12 03:22:10.656 INFO [stderr] warning: unused variable: `count`
Dec 12 03:22:10.656 INFO [stderr]   --> src/main.rs:64:6
Dec 12 03:22:10.656 INFO [stderr]    |
Dec 12 03:22:10.656 INFO [stderr] 64 |     let count = rand_string.chars().count();
Dec 12 03:22:10.656 INFO [stderr]    |         ^^^^^ help: consider using `_count` instead
Dec 12 03:22:10.656 INFO [stderr] 
Dec 12 03:22:10.656 INFO [stderr] warning: unused variable: `rand_tuple`
Dec 12 03:22:10.656 INFO [stderr]    --> src/main.rs:134:6
Dec 12 03:22:10.656 INFO [stderr]     |
Dec 12 03:22:10.656 INFO [stderr] 134 |     let rand_tuple = ("Vancir", 30);
Dec 12 03:22:10.656 INFO [stderr]     |         ^^^^^^^^^^ help: consider using `_rand_tuple` instead
Dec 12 03:22:10.657 INFO [stderr] 
Dec 12 03:22:10.657 INFO [stderr] warning: unused variable: `quicksilver`
Dec 12 03:22:10.657 INFO [stderr]    --> src/main.rs:172:6
Dec 12 03:22:10.657 INFO [stderr]     |
Dec 12 03:22:10.657 INFO [stderr] 172 |     let quicksilver = Hero::Fast;
Dec 12 03:22:10.657 INFO [stderr]     |         ^^^^^^^^^^^ help: consider using `_quicksilver` instead
Dec 12 03:22:10.657 INFO [stderr] 
Dec 12 03:22:10.708 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:22:10.708 INFO [stderr]  --> src/main.rs:7:9
Dec 12 03:22:10.708 INFO [stderr]   |
Dec 12 03:22:10.708 INFO [stderr] 7 |     let mut age : u32 = 100; 
Dec 12 03:22:10.708 INFO [stderr]   |         ----^^^
Dec 12 03:22:10.708 INFO [stderr]   |         |
Dec 12 03:22:10.708 INFO [stderr]   |         help: remove this `mut`
Dec 12 03:22:10.708 INFO [stderr]   |
Dec 12 03:22:10.708 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 12 03:22:10.708 INFO [stderr] 
Dec 12 03:22:10.708 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:22:10.708 INFO [stderr]   --> src/main.rs:18:6
Dec 12 03:22:10.708 INFO [stderr]    |
Dec 12 03:22:10.708 INFO [stderr] 18 |     let mut var = -4i32;
Dec 12 03:22:10.708 INFO [stderr]    |         ----^^^
Dec 12 03:22:10.708 INFO [stderr]    |         |
Dec 12 03:22:10.708 INFO [stderr]    |         help: remove this `mut`
Dec 12 03:22:10.708 INFO [stderr] 
Dec 12 03:22:10.708 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:22:10.708 INFO [stderr]    --> src/main.rs:153:6
Dec 12 03:22:10.708 INFO [stderr]     |
Dec 12 03:22:10.708 INFO [stderr] 153 |     let mut circle1 = Circle {
Dec 12 03:22:10.708 INFO [stderr]     |         ----^^^^^^^
Dec 12 03:22:10.708 INFO [stderr]     |         |
Dec 12 03:22:10.708 INFO [stderr]     |         help: remove this `mut`
Dec 12 03:22:10.708 INFO [stderr] 
Dec 12 03:22:10.708 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:22:10.708 INFO [stderr]    --> src/main.rs:166:6
Dec 12 03:22:10.708 INFO [stderr]     |
Dec 12 03:22:10.708 INFO [stderr] 166 |     let mut rect1 = Rectangle {
Dec 12 03:22:10.708 INFO [stderr]     |         ----^^^^^
Dec 12 03:22:10.708 INFO [stderr]     |         |
Dec 12 03:22:10.708 INFO [stderr]     |         help: remove this `mut`
Dec 12 03:22:10.709 INFO [stderr] 
Dec 12 03:22:10.872 INFO [stderr] warning: unused variable: `age`
Dec 12 03:22:10.872 INFO [stderr]  --> src/main.rs:7:13
Dec 12 03:22:10.872 INFO [stderr]   |
Dec 12 03:22:10.872 INFO [stderr] 7 |     let mut age : u32 = 100; 
Dec 12 03:22:10.872 INFO [stderr]   |             ^^^ help: consider using `_age` instead
Dec 12 03:22:10.872 INFO [stderr]   |
Dec 12 03:22:10.872 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 03:22:10.872 INFO [stderr] 
Dec 12 03:22:10.872 INFO [stderr] warning: unused variable: `count`
Dec 12 03:22:10.872 INFO [stderr]   --> src/main.rs:64:6
Dec 12 03:22:10.872 INFO [stderr]    |
Dec 12 03:22:10.872 INFO [stderr] 64 |     let count = rand_string.chars().count();
Dec 12 03:22:10.872 INFO [stderr]    |         ^^^^^ help: consider using `_count` instead
Dec 12 03:22:10.872 INFO [stderr] 
Dec 12 03:22:10.872 INFO [stderr] warning: unused variable: `rand_tuple`
Dec 12 03:22:10.872 INFO [stderr]    --> src/main.rs:134:6
Dec 12 03:22:10.872 INFO [stderr]     |
Dec 12 03:22:10.872 INFO [stderr] 134 |     let rand_tuple = ("Vancir", 30);
Dec 12 03:22:10.872 INFO [stderr]     |         ^^^^^^^^^^ help: consider using `_rand_tuple` instead
Dec 12 03:22:10.872 INFO [stderr] 
Dec 12 03:22:10.872 INFO [stderr] warning: unused variable: `quicksilver`
Dec 12 03:22:10.872 INFO [stderr]    --> src/main.rs:172:6
Dec 12 03:22:10.872 INFO [stderr]     |
Dec 12 03:22:10.872 INFO [stderr] 172 |     let quicksilver = Hero::Fast;
Dec 12 03:22:10.872 INFO [stderr]     |         ^^^^^^^^^^^ help: consider using `_quicksilver` instead
Dec 12 03:22:10.873 INFO [stderr] 
Dec 12 03:22:10.903 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:22:10.903 INFO [stderr]  --> src/main.rs:7:9
Dec 12 03:22:10.903 INFO [stderr]   |
Dec 12 03:22:10.903 INFO [stderr] 7 |     let mut age : u32 = 100; 
Dec 12 03:22:10.903 INFO [stderr]   |         ----^^^
Dec 12 03:22:10.903 INFO [stderr]   |         |
Dec 12 03:22:10.903 INFO [stderr]   |         help: remove this `mut`
Dec 12 03:22:10.903 INFO [stderr]   |
Dec 12 03:22:10.903 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 12 03:22:10.903 INFO [stderr] 
Dec 12 03:22:10.903 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:22:10.903 INFO [stderr]   --> src/main.rs:18:6
Dec 12 03:22:10.903 INFO [stderr]    |
Dec 12 03:22:10.903 INFO [stderr] 18 |     let mut var = -4i32;
Dec 12 03:22:10.904 INFO [stderr]    |         ----^^^
Dec 12 03:22:10.904 INFO [stderr]    |         |
Dec 12 03:22:10.904 INFO [stderr]    |         help: remove this `mut`
Dec 12 03:22:10.904 INFO [stderr] 
Dec 12 03:22:10.904 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:22:10.904 INFO [stderr]    --> src/main.rs:153:6
Dec 12 03:22:10.904 INFO [stderr]     |
Dec 12 03:22:10.904 INFO [stderr] 153 |     let mut circle1 = Circle {
Dec 12 03:22:10.904 INFO [stderr]     |         ----^^^^^^^
Dec 12 03:22:10.904 INFO [stderr]     |         |
Dec 12 03:22:10.904 INFO [stderr]     |         help: remove this `mut`
Dec 12 03:22:10.904 INFO [stderr] 
Dec 12 03:22:10.904 INFO [stderr] warning: variable does not need to be mutable
Dec 12 03:22:10.904 INFO [stderr]    --> src/main.rs:166:6
Dec 12 03:22:10.904 INFO [stderr]     |
Dec 12 03:22:10.904 INFO [stderr] 166 |     let mut rect1 = Rectangle {
Dec 12 03:22:10.904 INFO [stderr]     |         ----^^^^^
Dec 12 03:22:10.904 INFO [stderr]     |         |
Dec 12 03:22:10.904 INFO [stderr]     |         help: remove this `mut`
Dec 12 03:22:10.904 INFO [stderr] 
Dec 12 03:22:10.936 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
Dec 12 03:22:10.945 INFO [stderr] su: No module specific data is present
Dec 12 03:22:11.772 INFO running `"docker" "inspect" "a45bbbe3935027f3a0bc631352dac1bf421372ce8c48d6d16421e7feaa50f740"`
Dec 12 03:22:12.054 INFO running `"docker" "rm" "-f" "a45bbbe3935027f3a0bc631352dac1bf421372ce8c48d6d16421e7feaa50f740"`
Dec 12 03:22:12.362 INFO [stdout] a45bbbe3935027f3a0bc631352dac1bf421372ce8c48d6d16421e7feaa50f740