Dec 18 03:29:51.308 INFO checking bb2000/brainfuck_rs against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 03:29:51.308 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 03:29:51.976 INFO [stdout] e18d1fd32a64b99c532120dc05457a54b001f3562ad812dc87e0aa58f9a1ec70
Dec 18 03:29:51.978 INFO running `"docker" "start" "-a" "e18d1fd32a64b99c532120dc05457a54b001f3562ad812dc87e0aa58f9a1ec70"`
Dec 18 03:29:53.608 INFO [stderr]     Checking brainfuck v0.1.0 (/opt/crater/workdir)
Dec 18 03:29:54.196 INFO [stderr] warning: unused imports: `Read`, `Stdin`, `Write`
Dec 18 03:29:54.196 INFO [stderr]  --> src/brainfuck.rs:1:15
Dec 18 03:29:54.196 INFO [stderr]   |
Dec 18 03:29:54.196 INFO [stderr] 1 | use std::io::{Read, Write, Stdin};
Dec 18 03:29:54.196 INFO [stderr]   |               ^^^^  ^^^^^  ^^^^^
Dec 18 03:29:54.196 INFO [stderr]   |
Dec 18 03:29:54.196 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 03:29:54.196 INFO [stderr] 
Dec 18 03:29:54.196 INFO [stderr] warning: unused import: `std::io`
Dec 18 03:29:54.196 INFO [stderr]  --> src/brainfuck.rs:2:5
Dec 18 03:29:54.196 INFO [stderr]   |
Dec 18 03:29:54.196 INFO [stderr] 2 | use std::io;
Dec 18 03:29:54.196 INFO [stderr]   |     ^^^^^^^
Dec 18 03:29:54.196 INFO [stderr] 
Dec 18 03:29:54.196 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 03:29:54.196 INFO [stderr]   --> src/brainfuck.rs:41:25
Dec 18 03:29:54.196 INFO [stderr]    |
Dec 18 03:29:54.196 INFO [stderr] 41 |         for location in (0..self.memory.len()) {
Dec 18 03:29:54.196 INFO [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 03:29:54.196 INFO [stderr]    |
Dec 18 03:29:54.196 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 03:29:54.196 INFO [stderr] 
Dec 18 03:29:54.196 INFO [stderr] warning: unused import: `BufReader`
Dec 18 03:29:54.197 INFO [stderr]  --> src/main.rs:5:15
Dec 18 03:29:54.197 INFO [stderr]   |
Dec 18 03:29:54.197 INFO [stderr] 5 | use std::io::{BufReader, Read, Write};
Dec 18 03:29:54.197 INFO [stderr]   |               ^^^^^^^^^
Dec 18 03:29:54.197 INFO [stderr] 
Dec 18 03:29:54.224 INFO [stderr] warning: unused imports: `Read`, `Stdin`, `Write`
Dec 18 03:29:54.224 INFO [stderr]  --> src/brainfuck.rs:1:15
Dec 18 03:29:54.224 INFO [stderr]   |
Dec 18 03:29:54.224 INFO [stderr] 1 | use std::io::{Read, Write, Stdin};
Dec 18 03:29:54.224 INFO [stderr]   |               ^^^^  ^^^^^  ^^^^^
Dec 18 03:29:54.224 INFO [stderr]   |
Dec 18 03:29:54.224 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 03:29:54.224 INFO [stderr] 
Dec 18 03:29:54.224 INFO [stderr] warning: unused import: `std::io`
Dec 18 03:29:54.224 INFO [stderr]  --> src/brainfuck.rs:2:5
Dec 18 03:29:54.224 INFO [stderr]   |
Dec 18 03:29:54.224 INFO [stderr] 2 | use std::io;
Dec 18 03:29:54.224 INFO [stderr]   |     ^^^^^^^
Dec 18 03:29:54.224 INFO [stderr] 
Dec 18 03:29:54.224 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 03:29:54.224 INFO [stderr]   --> src/brainfuck.rs:41:25
Dec 18 03:29:54.224 INFO [stderr]    |
Dec 18 03:29:54.224 INFO [stderr] 41 |         for location in (0..self.memory.len()) {
Dec 18 03:29:54.224 INFO [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 03:29:54.224 INFO [stderr]    |
Dec 18 03:29:54.224 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 03:29:54.224 INFO [stderr] 
Dec 18 03:29:54.224 INFO [stderr] warning: unused import: `BufReader`
Dec 18 03:29:54.224 INFO [stderr]  --> src/main.rs:5:15
Dec 18 03:29:54.225 INFO [stderr]   |
Dec 18 03:29:54.225 INFO [stderr] 5 | use std::io::{BufReader, Read, Write};
Dec 18 03:29:54.225 INFO [stderr]   |               ^^^^^^^^^
Dec 18 03:29:54.225 INFO [stderr] 
Dec 18 03:29:54.412 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:29:54.412 INFO [stderr]   --> src/main.rs:19:5
Dec 18 03:29:54.412 INFO [stderr]    |
Dec 18 03:29:54.412 INFO [stderr] 19 |     io::stdout().flush();
Dec 18 03:29:54.412 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:29:54.412 INFO [stderr]    |
Dec 18 03:29:54.412 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 03:29:54.412 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:29:54.412 INFO [stderr] 
Dec 18 03:29:54.412 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:29:54.412 INFO [stderr]   --> src/main.rs:20:5
Dec 18 03:29:54.412 INFO [stderr]    |
Dec 18 03:29:54.412 INFO [stderr] 20 |     io::stdin().read_line(&mut input_buf);
Dec 18 03:29:54.412 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:29:54.412 INFO [stderr]    |
Dec 18 03:29:54.412 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:29:54.412 INFO [stderr] 
Dec 18 03:29:54.413 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:29:54.413 INFO [stderr]   --> src/main.rs:19:5
Dec 18 03:29:54.413 INFO [stderr]    |
Dec 18 03:29:54.413 INFO [stderr] 19 |     io::stdout().flush();
Dec 18 03:29:54.413 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:29:54.413 INFO [stderr]    |
Dec 18 03:29:54.413 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 03:29:54.413 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:29:54.413 INFO [stderr] 
Dec 18 03:29:54.413 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:29:54.413 INFO [stderr]   --> src/main.rs:20:5
Dec 18 03:29:54.413 INFO [stderr]    |
Dec 18 03:29:54.413 INFO [stderr] 20 |     io::stdin().read_line(&mut input_buf);
Dec 18 03:29:54.413 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:29:54.413 INFO [stderr]    |
Dec 18 03:29:54.413 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:29:54.413 INFO [stderr] 
Dec 18 03:29:54.450 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
Dec 18 03:29:55.442 INFO running `"docker" "inspect" "e18d1fd32a64b99c532120dc05457a54b001f3562ad812dc87e0aa58f9a1ec70"`
Dec 18 03:29:55.738 INFO running `"docker" "rm" "-f" "e18d1fd32a64b99c532120dc05457a54b001f3562ad812dc87e0aa58f9a1ec70"`
Dec 18 03:29:56.100 INFO [stdout] e18d1fd32a64b99c532120dc05457a54b001f3562ad812dc87e0aa58f9a1ec70