Dec 19 20:01:04.361 INFO checking bb2000/brainfuck_rs against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 20:01:04.361 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/bb2000/brainfuck_rs:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:01:05.102 INFO [stdout] 5c1d0e866ca0b02ffd3b46c79ba37fcf0d94a9c389c7e1b30237bfb073514256
Dec 19 20:01:05.104 INFO running `"docker" "start" "-a" "5c1d0e866ca0b02ffd3b46c79ba37fcf0d94a9c389c7e1b30237bfb073514256"`
Dec 19 20:01:07.412 INFO [stderr]     Checking brainfuck v0.1.0 (/opt/crater/workdir)
Dec 19 20:01:07.850 INFO [stderr] warning: unused imports: `Read`, `Stdin`, `Write`
Dec 19 20:01:07.850 INFO [stderr]  --> src/brainfuck.rs:1:15
Dec 19 20:01:07.850 INFO [stderr]   |
Dec 19 20:01:07.850 INFO [stderr] 1 | use std::io::{Read, Write, Stdin};
Dec 19 20:01:07.850 INFO [stderr]   |               ^^^^  ^^^^^  ^^^^^
Dec 19 20:01:07.850 INFO [stderr]   |
Dec 19 20:01:07.850 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 20:01:07.850 INFO [stderr] 
Dec 19 20:01:07.850 INFO [stderr] warning: unused import: `std::io`
Dec 19 20:01:07.850 INFO [stderr]  --> src/brainfuck.rs:2:5
Dec 19 20:01:07.850 INFO [stderr]   |
Dec 19 20:01:07.850 INFO [stderr] 2 | use std::io;
Dec 19 20:01:07.850 INFO [stderr]   |     ^^^^^^^
Dec 19 20:01:07.850 INFO [stderr] 
Dec 19 20:01:07.850 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 19 20:01:07.850 INFO [stderr]   --> src/brainfuck.rs:41:25
Dec 19 20:01:07.850 INFO [stderr]    |
Dec 19 20:01:07.850 INFO [stderr] 41 |         for location in (0..self.memory.len()) {
Dec 19 20:01:07.850 INFO [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 20:01:07.850 INFO [stderr]    |
Dec 19 20:01:07.850 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 20:01:07.850 INFO [stderr] 
Dec 19 20:01:07.850 INFO [stderr] warning: unused import: `BufReader`
Dec 19 20:01:07.850 INFO [stderr]  --> src/main.rs:5:15
Dec 19 20:01:07.850 INFO [stderr]   |
Dec 19 20:01:07.850 INFO [stderr] 5 | use std::io::{BufReader, Read, Write};
Dec 19 20:01:07.850 INFO [stderr]   |               ^^^^^^^^^
Dec 19 20:01:07.850 INFO [stderr] 
Dec 19 20:01:07.888 INFO [stderr] warning: unused imports: `Read`, `Stdin`, `Write`
Dec 19 20:01:07.888 INFO [stderr]  --> src/brainfuck.rs:1:15
Dec 19 20:01:07.888 INFO [stderr]   |
Dec 19 20:01:07.888 INFO [stderr] 1 | use std::io::{Read, Write, Stdin};
Dec 19 20:01:07.888 INFO [stderr]   |               ^^^^  ^^^^^  ^^^^^
Dec 19 20:01:07.888 INFO [stderr]   |
Dec 19 20:01:07.888 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 20:01:07.888 INFO [stderr] 
Dec 19 20:01:07.888 INFO [stderr] warning: unused import: `std::io`
Dec 19 20:01:07.888 INFO [stderr]  --> src/brainfuck.rs:2:5
Dec 19 20:01:07.888 INFO [stderr]   |
Dec 19 20:01:07.888 INFO [stderr] 2 | use std::io;
Dec 19 20:01:07.888 INFO [stderr]   |     ^^^^^^^
Dec 19 20:01:07.889 INFO [stderr] 
Dec 19 20:01:07.889 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 19 20:01:07.889 INFO [stderr]   --> src/brainfuck.rs:41:25
Dec 19 20:01:07.889 INFO [stderr]    |
Dec 19 20:01:07.889 INFO [stderr] 41 |         for location in (0..self.memory.len()) {
Dec 19 20:01:07.889 INFO [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 20:01:07.889 INFO [stderr]    |
Dec 19 20:01:07.889 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 20:01:07.889 INFO [stderr] 
Dec 19 20:01:07.900 INFO [stderr] warning: unused import: `BufReader`
Dec 19 20:01:07.900 INFO [stderr]  --> src/main.rs:5:15
Dec 19 20:01:07.900 INFO [stderr]   |
Dec 19 20:01:07.900 INFO [stderr] 5 | use std::io::{BufReader, Read, Write};
Dec 19 20:01:07.900 INFO [stderr]   |               ^^^^^^^^^
Dec 19 20:01:07.900 INFO [stderr] 
Dec 19 20:01:07.988 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:01:07.988 INFO [stderr]   --> src/main.rs:19:5
Dec 19 20:01:07.988 INFO [stderr]    |
Dec 19 20:01:07.988 INFO [stderr] 19 |     io::stdout().flush();
Dec 19 20:01:07.988 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:01:07.988 INFO [stderr]    |
Dec 19 20:01:07.988 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:01:07.988 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:01:07.988 INFO [stderr] 
Dec 19 20:01:07.988 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:01:07.988 INFO [stderr]   --> src/main.rs:20:5
Dec 19 20:01:07.988 INFO [stderr]    |
Dec 19 20:01:07.988 INFO [stderr] 20 |     io::stdin().read_line(&mut input_buf);
Dec 19 20:01:07.988 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:01:07.988 INFO [stderr]    |
Dec 19 20:01:07.988 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:01:07.988 INFO [stderr] 
Dec 19 20:01:08.088 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:01:08.088 INFO [stderr]   --> src/main.rs:19:5
Dec 19 20:01:08.088 INFO [stderr]    |
Dec 19 20:01:08.088 INFO [stderr] 19 |     io::stdout().flush();
Dec 19 20:01:08.088 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:01:08.088 INFO [stderr]    |
Dec 19 20:01:08.088 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:01:08.088 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:01:08.088 INFO [stderr] 
Dec 19 20:01:08.088 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:01:08.088 INFO [stderr]   --> src/main.rs:20:5
Dec 19 20:01:08.088 INFO [stderr]    |
Dec 19 20:01:08.088 INFO [stderr] 20 |     io::stdin().read_line(&mut input_buf);
Dec 19 20:01:08.088 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:01:08.088 INFO [stderr]    |
Dec 19 20:01:08.088 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:01:08.088 INFO [stderr] 
Dec 19 20:01:08.107 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
Dec 19 20:01:08.966 INFO running `"docker" "inspect" "5c1d0e866ca0b02ffd3b46c79ba37fcf0d94a9c389c7e1b30237bfb073514256"`
Dec 19 20:01:09.280 INFO running `"docker" "rm" "-f" "5c1d0e866ca0b02ffd3b46c79ba37fcf0d94a9c389c7e1b30237bfb073514256"`
Dec 19 20:01:09.568 INFO [stdout] 5c1d0e866ca0b02ffd3b46c79ba37fcf0d94a9c389c7e1b30237bfb073514256