Dec 04 22:00:34.728 INFO checking bb2000/brainfuck_rs against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 22:00:34.728 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 22:00:35.442 INFO [stdout] 4210ead01c06ac663e530f923728c849c438bba4f76916852a56313234b55546
Dec 04 22:00:35.444 INFO running `"docker" "start" "-a" "4210ead01c06ac663e530f923728c849c438bba4f76916852a56313234b55546"`
Dec 04 22:00:37.418 INFO [stderr] usermod: no changes
Dec 04 22:00:37.464 INFO [stderr]     Checking brainfuck v0.1.0 (/source)
Dec 04 22:00:37.991 INFO [stderr] warning: unused imports: `Read`, `Stdin`, `Write`
Dec 04 22:00:37.992 INFO [stderr]  --> src/brainfuck.rs:1:15
Dec 04 22:00:37.992 INFO [stderr]   |
Dec 04 22:00:37.992 INFO [stderr] 1 | use std::io::{Read, Write, Stdin};
Dec 04 22:00:37.993 INFO [stderr]   |               ^^^^  ^^^^^  ^^^^^
Dec 04 22:00:37.993 INFO [stderr]   |
Dec 04 22:00:37.993 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 22:00:37.993 INFO [stderr] 
Dec 04 22:00:37.994 INFO [stderr] warning: unused import: `std::io`
Dec 04 22:00:37.994 INFO [stderr]  --> src/brainfuck.rs:2:5
Dec 04 22:00:37.994 INFO [stderr]   |
Dec 04 22:00:37.995 INFO [stderr] 2 | use std::io;
Dec 04 22:00:37.995 INFO [stderr]   |     ^^^^^^^
Dec 04 22:00:37.995 INFO [stderr] 
Dec 04 22:00:37.996 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 04 22:00:37.996 INFO [stderr]   --> src/brainfuck.rs:41:25
Dec 04 22:00:37.996 INFO [stderr]    |
Dec 04 22:00:37.996 INFO [stderr] 41 |         for location in (0..self.memory.len()) {
Dec 04 22:00:37.997 INFO [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 04 22:00:37.997 INFO [stderr]    |
Dec 04 22:00:37.997 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 04 22:00:37.998 INFO [stderr] 
Dec 04 22:00:37.998 INFO [stderr] warning: unused import: `BufReader`
Dec 04 22:00:37.998 INFO [stderr]  --> src/main.rs:5:15
Dec 04 22:00:37.999 INFO [stderr]   |
Dec 04 22:00:37.999 INFO [stderr] 5 | use std::io::{BufReader, Read, Write};
Dec 04 22:00:37.999 INFO [stderr]   |               ^^^^^^^^^
Dec 04 22:00:38.000 INFO [stderr] 
Dec 04 22:00:38.219 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 22:00:38.219 INFO [stderr]   --> src/main.rs:19:5
Dec 04 22:00:38.219 INFO [stderr]    |
Dec 04 22:00:38.220 INFO [stderr] 19 |     io::stdout().flush();
Dec 04 22:00:38.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 22:00:38.220 INFO [stderr]    |
Dec 04 22:00:38.221 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 22:00:38.221 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 22:00:38.221 INFO [stderr] 
Dec 04 22:00:38.221 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 22:00:38.222 INFO [stderr]   --> src/main.rs:20:5
Dec 04 22:00:38.222 INFO [stderr]    |
Dec 04 22:00:38.222 INFO [stderr] 20 |     io::stdin().read_line(&mut input_buf);
Dec 04 22:00:38.223 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 22:00:38.223 INFO [stderr]    |
Dec 04 22:00:38.223 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 22:00:38.223 INFO [stderr] 
Dec 04 22:00:38.345 INFO [stderr] warning: unused imports: `Read`, `Stdin`, `Write`
Dec 04 22:00:38.345 INFO [stderr]  --> src/brainfuck.rs:1:15
Dec 04 22:00:38.345 INFO [stderr]   |
Dec 04 22:00:38.346 INFO [stderr] 1 | use std::io::{Read, Write, Stdin};
Dec 04 22:00:38.346 INFO [stderr]   |               ^^^^  ^^^^^  ^^^^^
Dec 04 22:00:38.346 INFO [stderr]   |
Dec 04 22:00:38.346 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 22:00:38.355 INFO [stderr] 
Dec 04 22:00:38.355 INFO [stderr] warning: unused import: `std::io`
Dec 04 22:00:38.355 INFO [stderr]  --> src/brainfuck.rs:2:5
Dec 04 22:00:38.355 INFO [stderr]   |
Dec 04 22:00:38.355 INFO [stderr] 2 | use std::io;
Dec 04 22:00:38.355 INFO [stderr]   |     ^^^^^^^
Dec 04 22:00:38.355 INFO [stderr] 
Dec 04 22:00:38.356 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 04 22:00:38.356 INFO [stderr]   --> src/brainfuck.rs:41:25
Dec 04 22:00:38.356 INFO [stderr]    |
Dec 04 22:00:38.356 INFO [stderr] 41 |         for location in (0..self.memory.len()) {
Dec 04 22:00:38.356 INFO [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 04 22:00:38.356 INFO [stderr]    |
Dec 04 22:00:38.356 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 04 22:00:38.356 INFO [stderr] 
Dec 04 22:00:38.357 INFO [stderr] warning: unused import: `BufReader`
Dec 04 22:00:38.357 INFO [stderr]  --> src/main.rs:5:15
Dec 04 22:00:38.357 INFO [stderr]   |
Dec 04 22:00:38.357 INFO [stderr] 5 | use std::io::{BufReader, Read, Write};
Dec 04 22:00:38.357 INFO [stderr]   |               ^^^^^^^^^
Dec 04 22:00:38.357 INFO [stderr] 
Dec 04 22:00:38.473 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 22:00:38.473 INFO [stderr]   --> src/main.rs:19:5
Dec 04 22:00:38.473 INFO [stderr]    |
Dec 04 22:00:38.473 INFO [stderr] 19 |     io::stdout().flush();
Dec 04 22:00:38.473 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 22:00:38.473 INFO [stderr]    |
Dec 04 22:00:38.473 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 22:00:38.473 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 22:00:38.473 INFO [stderr] 
Dec 04 22:00:38.473 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 22:00:38.473 INFO [stderr]   --> src/main.rs:20:5
Dec 04 22:00:38.473 INFO [stderr]    |
Dec 04 22:00:38.473 INFO [stderr] 20 |     io::stdin().read_line(&mut input_buf);
Dec 04 22:00:38.473 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 22:00:38.473 INFO [stderr]    |
Dec 04 22:00:38.474 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 22:00:38.474 INFO [stderr] 
Dec 04 22:00:38.507 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
Dec 04 22:00:38.510 INFO [stderr] su: No module specific data is present
Dec 04 22:00:39.999 INFO running `"docker" "inspect" "4210ead01c06ac663e530f923728c849c438bba4f76916852a56313234b55546"`
Dec 04 22:00:40.377 INFO running `"docker" "rm" "-f" "4210ead01c06ac663e530f923728c849c438bba4f76916852a56313234b55546"`
Dec 04 22:00:40.706 INFO [stdout] 4210ead01c06ac663e530f923728c849c438bba4f76916852a56313234b55546