Sep 20 05:55:47.490 INFO checking brotli-no-stdlib-1.0.4 against try#135b4cd023a753409d01e43b0f23d22a899feeeb for pr-54352 Sep 20 05:55:47.490 INFO running: cargo +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets Sep 20 05:55:47.490 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54352/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-3/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"` Sep 20 05:55:47.627 INFO blam! 7efa2b80865ea3a9558c7a0f2e69c6793e828ed4f140cbafe945c56b021ece3f Sep 20 05:55:47.630 INFO running `"docker" "start" "-a" "7efa2b80865ea3a9558c7a0f2e69c6793e828ed4f140cbafe945c56b021ece3f"` Sep 20 05:55:48.771 INFO kablam! usermod: no changes Sep 20 05:55:48.794 INFO kablam! warning: An explicit [[bin]] section is specified in Cargo.toml which currently Sep 20 05:55:48.794 INFO kablam! disables Cargo from automatically inferring other binary targets. Sep 20 05:55:48.794 INFO kablam! This inference behavior will change in the Rust 2018 edition and the following Sep 20 05:55:48.794 INFO kablam! files will be included as a binary target: Sep 20 05:55:48.794 INFO kablam! Sep 20 05:55:48.794 INFO kablam! * /source/src/bin/integration_tests.rs Sep 20 05:55:48.794 INFO kablam! Sep 20 05:55:48.794 INFO kablam! This is likely to break cargo build or cargo test as these files may not be Sep 20 05:55:48.794 INFO kablam! ready to be compiled as a binary target today. You can future-proof yourself Sep 20 05:55:48.794 INFO kablam! and disable this warning by adding `autobins = false` to your [package] Sep 20 05:55:48.794 INFO kablam! section. You may also move the files to a location where Cargo would not Sep 20 05:55:48.794 INFO kablam! automatically infer them to be a target, such as in subfolders. Sep 20 05:55:48.794 INFO kablam! Sep 20 05:55:48.794 INFO kablam! For more information on this warning you can consult Sep 20 05:55:48.794 INFO kablam! https://github.com/rust-lang/cargo/issues/5330 Sep 20 05:55:48.799 INFO kablam! Checking alloc-no-stdlib v1.0.0 Sep 20 05:55:48.964 INFO kablam! Checking brotli-no-stdlib v1.0.4 (/source) Sep 20 05:55:49.638 INFO kablam! warning: unused `#[macro_use]` import Sep 20 05:55:49.638 INFO kablam! --> src/lib.rs:11:1 Sep 20 05:55:49.638 INFO kablam! | Sep 20 05:55:49.638 INFO kablam! 11 | #[macro_use] Sep 20 05:55:49.638 INFO kablam! | ^^^^^^^^^^^^ Sep 20 05:55:49.638 INFO kablam! | Sep 20 05:55:49.638 INFO kablam! = note: #[warn(unused_imports)] on by default Sep 20 05:55:49.638 INFO kablam! Sep 20 05:55:49.667 INFO kablam! warning: unused macro definition Sep 20 05:55:49.667 INFO kablam! --> src/lib.rs:921:1 Sep 20 05:55:49.667 INFO kablam! | Sep 20 05:55:49.667 INFO kablam! 921 | / macro_rules! SafeReadBlockLength ( Sep 20 05:55:49.667 INFO kablam! 922 | | ($state : expr, $result : expr , $table : expr) => { Sep 20 05:55:49.667 INFO kablam! 923 | | SafeReadBlockLengthFromIndex(&mut $state, &mut $result, Sep 20 05:55:49.667 INFO kablam! 924 | | SafeReadBlockLengthIndex($state.substate_read_block_length, Sep 20 05:55:49.667 INFO kablam! ... | Sep 20 05:55:49.667 INFO kablam! 928 | | }; Sep 20 05:55:49.667 INFO kablam! 929 | | ); Sep 20 05:55:49.667 INFO kablam! | |__^ Sep 20 05:55:49.667 INFO kablam! | Sep 20 05:55:49.667 INFO kablam! = note: #[warn(unused_macros)] on by default Sep 20 05:55:49.668 INFO kablam! Sep 20 05:55:49.897 INFO kablam! warning: unused macro definition Sep 20 05:55:49.898 INFO kablam! --> src/lib.rs:921:1 Sep 20 05:55:49.898 INFO kablam! | Sep 20 05:55:49.898 INFO kablam! 921 | / macro_rules! SafeReadBlockLength ( Sep 20 05:55:49.898 INFO kablam! 922 | | ($state : expr, $result : expr , $table : expr) => { Sep 20 05:55:49.899 INFO kablam! 923 | | SafeReadBlockLengthFromIndex(&mut $state, &mut $result, Sep 20 05:55:49.899 INFO kablam! 924 | | SafeReadBlockLengthIndex($state.substate_read_block_length, Sep 20 05:55:49.899 INFO kablam! ... | Sep 20 05:55:49.899 INFO kablam! 928 | | }; Sep 20 05:55:49.899 INFO kablam! 929 | | ); Sep 20 05:55:49.900 INFO kablam! | |__^ Sep 20 05:55:49.900 INFO kablam! | Sep 20 05:55:49.900 INFO kablam! = note: #[warn(unused_macros)] on by default Sep 20 05:55:49.900 INFO kablam! Sep 20 05:55:51.182 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.182 INFO kablam! --> src/lib.rs:131:22 Sep 20 05:55:51.182 INFO kablam! | Sep 20 05:55:51.182 INFO kablam! 131 | mut value : &mut u32, Sep 20 05:55:51.182 INFO kablam! | ----^^^^^ Sep 20 05:55:51.182 INFO kablam! | | Sep 20 05:55:51.182 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.182 INFO kablam! | Sep 20 05:55:51.182 INFO kablam! = note: #[warn(unused_mut)] on by default Sep 20 05:55:51.182 INFO kablam! Sep 20 05:55:51.275 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.275 INFO kablam! --> src/lib.rs:1271:45 Sep 20 05:55:51.275 INFO kablam! | Sep 20 05:55:51.275 INFO kablam! 1271 | mut s : &mut BlockTypeAndLengthState, Sep 20 05:55:51.275 INFO kablam! | ----^ Sep 20 05:55:51.275 INFO kablam! | | Sep 20 05:55:51.276 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.276 INFO kablam! Sep 20 05:55:51.276 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.276 INFO kablam! --> src/lib.rs:1272:45 Sep 20 05:55:51.276 INFO kablam! | Sep 20 05:55:51.276 INFO kablam! 1272 | mut br : &mut bit_reader::BrotliBitReader, Sep 20 05:55:51.276 INFO kablam! | ----^^ Sep 20 05:55:51.276 INFO kablam! | | Sep 20 05:55:51.276 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.276 INFO kablam! Sep 20 05:55:51.277 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.277 INFO kablam! --> src/lib.rs:1332:45 Sep 20 05:55:51.277 INFO kablam! | Sep 20 05:55:51.277 INFO kablam! 1332 | mut s : &mut BrotliState src/lib.rs:1377:45 Sep 20 05:55:51.278 INFO kablam! | Sep 20 05:55:51.278 INFO kablam! 1377 | mut s : &mut BrotliState, input : &[u8]) -> bool { Sep 20 05:55:51.278 INFO kablam! | ----^ Sep 20 05:55:51.278 INFO kablam! | | Sep 20 05:55:51.278 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.278 INFO kablam! Sep 20 05:55:51.279 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.279 INFO kablam! --> src/lib.rs:1390:45 Sep 20 05:55:51.279 INFO kablam! | Sep 20 05:55:51.279 INFO kablam! 1390 | AllocHC : alloc::Allocator> (mut s : &mut BrotliState, input : &[u8]) { Sep 20 05:55:51.279 INFO kablam! | ----^ Sep 20 05:55:51.279 INFO kablam! | | Sep 20 05:55:51.279 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.279 INFO kablam! Sep 20 05:55:51.279 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.280 INFO kablam! --> src/lib.rs:1398:45 Sep 20 05:55:51.280 INFO kablam! | Sep 20 05:55:51.280 INFO kablam! 1398 | AllocHC : alloc::Allocator> (mut s : &mut BrotliState, input : &[u8]) -> bool { Sep 20 05:55:51.280 INFO kablam! | ----^ Sep 20 05:55:51.280 INFO kablam! | | Sep 20 05:55:51.281 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.281 INFO kablam! Sep 20 05:55:51.282 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.282 INFO kablam! --> src/lib.rs:1409:45 Sep 20 05:55:51.282 INFO kablam! | Sep 20 05:55:51.282 INFO kablam! 1409 | mut s : &mut BrotliState, input : &[u8]) -> bool { Sep 20 05:55:51.282 INFO kablam! | ----^ Sep 20 05:55:51.282 INFO kablam! | | Sep 20 05:55:51.282 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.283 INFO kablam! Sep 20 05:55:51.283 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.283 INFO kablam! --> src/lib.rs:1424:45 Sep 20 05:55:51.283 INFO kablam! | Sep 20 05:55:51.284 INFO kablam! 1424 | AllocHC : alloc::Allocator> (mut s : &mut BrotliState, input : &[u8]) { Sep 20 05:55:51.284 INFO kablam! | ----^ Sep 20 05:55:51.284 INFO kablam! | | Sep 20 05:55:51.284 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.284 INFO kablam! Sep 20 05:55:51.285 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.285 INFO kablam! --> src/lib.rs:1433:45 Sep 20 05:55:51.285 INFO kablam! | Sep 20 05:55:51.285 INFO kablam! 1433 | AllocHC : alloc::Allocator> (mut s : &mut BrotliState, input : &[u8]) -> bool { Sep 20 05:55:51.285 INFO kablam! | ----^ Sep 20 05:55:51.285 INFO kablam! | | Sep 20 05:55:51.286 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.286 INFO kablam! Sep 20 05:55:51.287 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.288 INFO kablam! --> src/lib.rs:1440:33 Sep 20 05:55:51.288 INFO kablam! | Sep 20 05:55:51.288 INFO kablam! 1440 | (available_out : &mut usize, mut output : &mut [u8], mut output_offset : &mut usize, Sep 20 05:55:51.288 INFO kablam! | ----^^^^^^ Sep 20 05:55:51.288 INFO kablam! | | Sep 20 05:55:51.288 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.288 INFO kablam! Sep 20 05:55:51.289 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.289 INFO kablam! --> src/lib.rs:1440:57 Sep 20 05:55:51.289 INFO kablam! | Sep 20 05:55:51.289 INFO kablam! 1440 | (available_out : &mut usize, mut output : &mut [u8], mut output_offset : &mut usize, Sep 20 05:55:51.289 INFO kablam! | ----^^^^^^^^^^^^^ Sep 20 05:55:51.289 INFO kablam! | | Sep 20 05:55:51.290 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.290 INFO kablam! Sep 20 05:55:51.290 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.290 INFO kablam! --> src/lib.rs:1441:20 Sep 20 05:55:51.290 INFO kablam! | Sep 20 05:55:51.290 INFO kablam! 1441 | mut total_out : &mut usize, s : &mut BrotliState) -> BrotliResult { Sep 20 05:55:51.291 INFO kablam! | ----^^^^^^^^^ Sep 20 05:55:51.291 INFO kablam! | | Sep 20 05:55:51.291 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.291 INFO kablam! Sep 20 05:55:51.777 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.777 INFO kablam! --> src/lib.rs:2198:3 Sep 20 05:55:51.777 INFO kablam! | Sep 20 05:55:51.777 INFO kablam! 2198 | mut available_in : &mut usize, input_offset : &mut usize, xinput : &[u8], // ugly that we are mutable Sep 20 05:55:51.777 INFO kablam! | ----^^^^^^^^^^^^ Sep 20 05:55:51.778 INFO kablam! | | Sep 20 05:55:51.778 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.778 INFO kablam! Sep 20 05:55:51.907 INFO kablam! warning: variable does not need to be mutable Sep 20 05:55:51.907 INFO kablam! --> src/transform.rs:284:9 Sep 20 05:55:51.908 INFO kablam! | Sep 20 05:55:51.908 INFO kablam! 284 | let mut uppercase = &mut dst[(idx - len) as usize ..]; Sep 20 05:55:51.908 INFO kablam! | ----^^^^^^^^^ Sep 20 05:55:51.908 INFO kablam! | | Sep 20 05:55:51.909 INFO kablam! | help: remove this `mut` Sep 20 05:55:51.909 INFO kablam! Sep 20 05:56:10.170 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.170 INFO kablam! --> src/lib.rs:131:22 Sep 20 05:56:10.170 INFO kablam! | Sep 20 05:56:10.170 INFO kablam! 131 | mut value : &mut u32, Sep 20 05:56:10.170 INFO kablam! | ----^^^^^ Sep 20 05:56:10.170 INFO kablam! | | Sep 20 05:56:10.170 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.170 INFO kablam! | Sep 20 05:56:10.170 INFO kablam! = note: #[warn(unused_mut)] on by default Sep 20 05:56:10.170 INFO kablam! Sep 20 05:56:10.378 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.378 INFO kablam! --> src/lib.rs:1271:45 Sep 20 05:56:10.378 INFO kablam! | Sep 20 05:56:10.378 INFO kablam! 1271 | mut s : &mut BlockTypeAndLengthState, Sep 20 05:56:10.378 INFO kablam! | ----^ Sep 20 05:56:10.378 INFO kablam! | | Sep 20 05:56:10.378 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.378 INFO kablam! Sep 20 05:56:10.378 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.378 INFO kablam! --> src/lib.rs:1272:45 Sep 20 05:56:10.378 INFO kablam! | Sep 20 05:56:10.378 INFO kablam! 1272 | mut br : &mut bit_reader::BrotliBitReader, Sep 20 05:56:10.378 INFO kablam! | ----^^ Sep 20 05:56:10.378 INFO kablam! | | Sep 20 05:56:10.378 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.378 INFO kablam! Sep 20 05:56:10.378 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.378 INFO kablam! --> src/lib.rs:1332:45 Sep 20 05:56:10.378 INFO kablam! | Sep 20 05:56:10.378 INFO kablam! 1332 | mut s : &mut BrotliState src/lib.rs:1377:45 Sep 20 05:56:10.378 INFO kablam! | Sep 20 05:56:10.378 INFO kablam! 1377 | mut s : &mut BrotliState, input : &[u8]) -> bool { Sep 20 05:56:10.378 INFO kablam! | ----^ Sep 20 05:56:10.379 INFO kablam! | | Sep 20 05:56:10.379 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.379 INFO kablam! Sep 20 05:56:10.379 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.379 INFO kablam! --> src/lib.rs:1390:45 Sep 20 05:56:10.379 INFO kablam! | Sep 20 05:56:10.379 INFO kablam! 1390 | AllocHC : alloc::Allocator> (mut s : &mut BrotliState, input : &[u8]) { Sep 20 05:56:10.379 INFO kablam! | ----^ Sep 20 05:56:10.379 INFO kablam! | | Sep 20 05:56:10.379 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.379 INFO kablam! Sep 20 05:56:10.379 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.379 INFO kablam! --> src/lib.rs:1398:45 Sep 20 05:56:10.379 INFO kablam! | Sep 20 05:56:10.379 INFO kablam! 1398 | AllocHC : alloc::Allocator> (mut s : &mut BrotliState, input : &[u8]) -> bool { Sep 20 05:56:10.379 INFO kablam! | ----^ Sep 20 05:56:10.379 INFO kablam! | | Sep 20 05:56:10.379 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.379 INFO kablam! Sep 20 05:56:10.394 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.394 INFO kablam! --> src/lib.rs:1409:45 Sep 20 05:56:10.394 INFO kablam! | Sep 20 05:56:10.394 INFO kablam! 1409 | mut s : &mut BrotliState, input : &[u8]) -> bool { Sep 20 05:56:10.394 INFO kablam! | ----^ Sep 20 05:56:10.394 INFO kablam! | | Sep 20 05:56:10.394 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.394 INFO kablam! Sep 20 05:56:10.394 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.394 INFO kablam! --> src/lib.rs:1424:45 Sep 20 05:56:10.394 INFO kablam! | Sep 20 05:56:10.394 INFO kablam! 1424 | AllocHC : alloc::Allocator> (mut s : &mut BrotliState, input : &[u8]) { Sep 20 05:56:10.394 INFO kablam! | ----^ Sep 20 05:56:10.394 INFO kablam! | | Sep 20 05:56:10.394 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.394 INFO kablam! Sep 20 05:56:10.394 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.395 INFO kablam! --> src/lib.rs:1433:45 Sep 20 05:56:10.395 INFO kablam! | Sep 20 05:56:10.395 INFO kablam! 1433 | AllocHC : alloc::Allocator> (mut s : &mut BrotliState, input : &[u8]) -> bool { Sep 20 05:56:10.395 INFO kablam! | ----^ Sep 20 05:56:10.395 INFO kablam! | | Sep 20 05:56:10.395 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.395 INFO kablam! Sep 20 05:56:10.395 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.395 INFO kablam! --> src/lib.rs:1440:33 Sep 20 05:56:10.395 INFO kablam! | Sep 20 05:56:10.395 INFO kablam! 1440 | (available_out : &mut usize, mut output : &mut [u8], mut output_offset : &mut usize, Sep 20 05:56:10.395 INFO kablam! | ----^^^^^^ Sep 20 05:56:10.395 INFO kablam! | | Sep 20 05:56:10.395 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.395 INFO kablam! Sep 20 05:56:10.395 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.395 INFO kablam! --> src/lib.rs:1440:57 Sep 20 05:56:10.395 INFO kablam! | Sep 20 05:56:10.395 INFO kablam! 1440 | (available_out : &mut usize, mut output : &mut [u8], mut output_offset : &mut usize, Sep 20 05:56:10.395 INFO kablam! | ----^^^^^^^^^^^^^ Sep 20 05:56:10.395 INFO kablam! | | Sep 20 05:56:10.395 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.395 INFO kablam! Sep 20 05:56:10.395 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:10.395 INFO kablam! --> src/lib.rs:1441:20 Sep 20 05:56:10.395 INFO kablam! | Sep 20 05:56:10.395 INFO kablam! 1441 | mut total_out : &mut usize, s : &mut BrotliState) -> BrotliResult { Sep 20 05:56:10.395 INFO kablam! | ----^^^^^^^^^ Sep 20 05:56:10.395 INFO kablam! | | Sep 20 05:56:10.395 INFO kablam! | help: remove this `mut` Sep 20 05:56:10.395 INFO kablam! Sep 20 05:56:11.282 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:11.282 INFO kablam! --> src/lib.rs:2198:3 Sep 20 05:56:11.282 INFO kablam! | Sep 20 05:56:11.282 INFO kablam! 2198 | mut available_in : &mut usize, input_offset : &mut usize, xinput : &[u8], // ugly that we are mutable Sep 20 05:56:11.282 INFO kablam! | ----^^^^^^^^^^^^ Sep 20 05:56:11.282 INFO kablam! | | Sep 20 05:56:11.282 INFO kablam! | help: remove this `mut` Sep 20 05:56:11.282 INFO kablam! Sep 20 05:56:11.821 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:11.821 INFO kablam! --> src/transform.rs:284:9 Sep 20 05:56:11.821 INFO kablam! | Sep 20 05:56:11.821 INFO kablam! 284 | let mut uppercase = &mut dst[(idx - len) as usize ..]; Sep 20 05:56:11.821 INFO kablam! | ----^^^^^^^^^ Sep 20 05:56:11.821 INFO kablam! | | Sep 20 05:56:11.821 INFO kablam! | help: remove this `mut` Sep 20 05:56:11.821 INFO kablam! Sep 20 05:56:14.218 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:14.218 INFO kablam! --> src/bin/brot.rs:76:63 Sep 20 05:56:14.218 INFO kablam! | Sep 20 05:56:14.218 INFO kablam! 76 | pub fn decompress (r : &mut InputType, mut w : &mut OutputType) -> Result<(), io::Error> Sep 20 05:56:14.218 INFO kablam! | ----^ Sep 20 05:56:14.218 INFO kablam! | | Sep 20 05:56:14.218 INFO kablam! | help: remove this `mut` Sep 20 05:56:14.218 INFO kablam! | Sep 20 05:56:14.218 INFO kablam! = note: #[warn(unused_mut)] on by default Sep 20 05:56:14.218 INFO kablam! Sep 20 05:56:14.734 INFO kablam! warning: variable does not need to be mutable Sep 20 05:56:14.734 INFO kablam! --> src/bin/brot.rs:76:63 Sep 20 05:56:14.734 INFO kablam! | Sep 20 05:56:14.734 INFO kablam! 76 | pub fn decompress (r : &mut InputType, mut w : &mut OutputType) -> Result<(), io::Error> Sep 20 05:56:14.734 INFO kablam! | ----^ Sep 20 05:56:14.734 INFO kablam! | | Sep 20 05:56:14.734 INFO kablam! | help: remove this `mut` Sep 20 05:56:14.734 INFO kablam! | Sep 20 05:56:14.734 INFO kablam! = note: #[warn(unused_mut)] on by default Sep 20 05:56:14.734 INFO kablam! Sep 20 05:56:14.958 INFO kablam! Finished dev [unoptimized + debuginfo] target(s) in 26.17s Sep 20 05:56:14.962 INFO kablam! su: No module specific data is present Sep 20 05:56:15.717 INFO running `"docker" "rm" "-f" "7efa2b80865ea3a9558c7a0f2e69c6793e828ed4f140cbafe945c56b021ece3f"` Sep 20 05:56:15.820 INFO blam! 7efa2b80865ea3a9558c7a0f2e69c6793e828ed4f140cbafe945c56b021ece3f