[INFO] updating cached repository rajasekarv/ant-colony-optimization [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/rajasekarv/ant-colony-optimization [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/rajasekarv/ant-colony-optimization" "work/ex/beta-1.38-1/sources/1.37.0/gh/rajasekarv/ant-colony-optimization"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rajasekarv/ant-colony-optimization'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/rajasekarv/ant-colony-optimization" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rajasekarv/ant-colony-optimization"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rajasekarv/ant-colony-optimization'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] a3a1f4c379ddeeeab6fccbf6564fc46e938951b9 [INFO] sha for GitHub repo rajasekarv/ant-colony-optimization: a3a1f4c379ddeeeab6fccbf6564fc46e938951b9 [INFO] validating manifest of rajasekarv/ant-colony-optimization on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of rajasekarv/ant-colony-optimization on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing rajasekarv/ant-colony-optimization [INFO] finished frobbing rajasekarv/ant-colony-optimization [INFO] frobbed toml for rajasekarv/ant-colony-optimization written to work/ex/beta-1.38-1/sources/1.37.0/gh/rajasekarv/ant-colony-optimization/Cargo.toml [INFO] started frobbing rajasekarv/ant-colony-optimization [INFO] finished frobbing rajasekarv/ant-colony-optimization [INFO] frobbed toml for rajasekarv/ant-colony-optimization written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rajasekarv/ant-colony-optimization/Cargo.toml [INFO] crate rajasekarv/ant-colony-optimization already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing rajasekarv/ant-colony-optimization against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rajasekarv/ant-colony-optimization:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] f09252993fcfc1e49ffd12273f54d584c645eb58a8cbd19b520d69f8c679b0ab [INFO] running `"docker" "start" "-a" "f09252993fcfc1e49ffd12273f54d584c645eb58a8cbd19b520d69f8c679b0ab"` [INFO] [stderr] Compiling permutation v0.2.5 [INFO] [stderr] Compiling rand v0.6.4 [INFO] [stderr] Compiling fs2 v0.4.3 [INFO] [stderr] Compiling rand_os v0.1.1 [INFO] [stderr] Compiling memmap v0.7.0 [INFO] [stderr] Compiling syn v0.15.24 [INFO] [stderr] Compiling bincode v0.8.0 [INFO] [stderr] Compiling rayon-core v1.4.1 [INFO] [stderr] Compiling rustbreak v1.4.0 [INFO] [stderr] Compiling rayon v1.0.3 [INFO] [stderr] Compiling serde_derive v1.0.84 [INFO] [stderr] Compiling aco_rust v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `HashMap` [INFO] [stderr] --> src/aco_mem.rs:8:24 [INFO] [stderr] | [INFO] [stderr] 8 | use std::collections::{HashMap, HashSet}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::f64::INFINITY` [INFO] [stderr] --> src/aco_mem.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::f64::INFINITY; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `memmap::MmapOptions` [INFO] [stderr] --> src/aco_memmap.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use memmap::MmapOptions; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::f32::INFINITY` [INFO] [stderr] --> src/aco_memmap.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | use std::f32::INFINITY; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::mem::transmute` [INFO] [stderr] --> src/aco_memmap.rs:14:5 [INFO] [stderr] | [INFO] [stderr] 14 | use std::mem::transmute; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `slice` [INFO] [stderr] --> src/aco_memmap.rs:15:16 [INFO] [stderr] | [INFO] [stderr] 15 | use std::{mem, slice}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `rayon::prelude` [INFO] [stderr] --> src/aco_mem.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use rayon::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/aco_mem.rs:153:13 [INFO] [stderr] | [INFO] [stderr] 153 | for i in 0..(self.distances.len() - 1) { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/aco_mem.rs:116:17 [INFO] [stderr] | [INFO] [stderr] 116 | let mut iteration_paths: Vec; [INFO] [stderr] | ----^^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/aco_memmap.rs:146:17 [INFO] [stderr] | [INFO] [stderr] 146 | let mut iteration_paths: Vec; [INFO] [stderr] | ----^^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/aco_no_mem.rs:136:17 [INFO] [stderr] | [INFO] [stderr] 136 | let mut iteration_paths: Vec; [INFO] [stderr] | ----^^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `euclidean_distance` [INFO] [stderr] --> src/aco_mem.rs:245:5 [INFO] [stderr] | [INFO] [stderr] 245 | fn euclidean_distance(a: &Coordinate, b: &Coordinate) -> f64 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `fnv::FnvHashMap` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use fnv::FnvHashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::mem::transmute` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:15:5 [INFO] [stderr] | [INFO] [stderr] 15 | use std::mem::transmute; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `slice` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:16:16 [INFO] [stderr] | [INFO] [stderr] 16 | use std::{mem, slice}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::HashMap` [INFO] [stderr] --> src/bin/aco_using_ram.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::collections::HashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/aco_using_memmap.rs:39:13 [INFO] [stderr] | [INFO] [stderr] 39 | let mut f = File::create("/data1/temp").expect("Unable to create file"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/aco_using_memmap.rs:53:9 [INFO] [stderr] | [INFO] [stderr] 53 | let mut f = File::open("/data1/temp").unwrap(); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/aco_using_memmap.rs:98:13 [INFO] [stderr] | [INFO] [stderr] 98 | let mut f = File::create("temp").expect("Unable to create file"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/aco_using_memmap.rs:115:9 [INFO] [stderr] | [INFO] [stderr] 115 | let mut f = File::open("temp").unwrap(); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/aco_using_memmap.rs:209:9 [INFO] [stderr] | [INFO] [stderr] 209 | let mut f = File::create("temp").expect("Unable to create file"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main0` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:74:1 [INFO] [stderr] | [INFO] [stderr] 74 | fn main0() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main4` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:144:1 [INFO] [stderr] | [INFO] [stderr] 144 | fn main4() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main1` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:185:1 [INFO] [stderr] | [INFO] [stderr] 185 | fn main1() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 37.28s [INFO] running `"docker" "inspect" "f09252993fcfc1e49ffd12273f54d584c645eb58a8cbd19b520d69f8c679b0ab"` [INFO] running `"docker" "rm" "-f" "f09252993fcfc1e49ffd12273f54d584c645eb58a8cbd19b520d69f8c679b0ab"` [INFO] [stdout] f09252993fcfc1e49ffd12273f54d584c645eb58a8cbd19b520d69f8c679b0ab [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rajasekarv/ant-colony-optimization:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] fb3ae423f3b381bb4a170d5d66645dd2e22734dfaaa7da6495b9e305d43d4408 [INFO] running `"docker" "start" "-a" "fb3ae423f3b381bb4a170d5d66645dd2e22734dfaaa7da6495b9e305d43d4408"` [INFO] [stderr] Compiling aco_rust v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `fnv::FnvHashMap` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use fnv::FnvHashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::mem::transmute` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:15:5 [INFO] [stderr] | [INFO] [stderr] 15 | use std::mem::transmute; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `slice` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:16:16 [INFO] [stderr] | [INFO] [stderr] 16 | use std::{mem, slice}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/aco_using_memmap.rs:39:13 [INFO] [stderr] | [INFO] [stderr] 39 | let mut f = File::create("/data1/temp").expect("Unable to create file"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/aco_using_memmap.rs:53:9 [INFO] [stderr] | [INFO] [stderr] 53 | let mut f = File::open("/data1/temp").unwrap(); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/aco_using_memmap.rs:98:13 [INFO] [stderr] | [INFO] [stderr] 98 | let mut f = File::create("temp").expect("Unable to create file"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/aco_using_memmap.rs:115:9 [INFO] [stderr] | [INFO] [stderr] 115 | let mut f = File::open("temp").unwrap(); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::HashMap` [INFO] [stderr] --> src/bin/aco_using_ram.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::collections::HashMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/aco_using_memmap.rs:209:9 [INFO] [stderr] | [INFO] [stderr] 209 | let mut f = File::create("temp").expect("Unable to create file"); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main0` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:74:1 [INFO] [stderr] | [INFO] [stderr] 74 | fn main0() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main4` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:144:1 [INFO] [stderr] | [INFO] [stderr] 144 | fn main4() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `main1` [INFO] [stderr] --> src/bin/aco_using_memmap.rs:185:1 [INFO] [stderr] | [INFO] [stderr] 185 | fn main1() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `HashMap` [INFO] [stderr] --> src/aco_mem.rs:8:24 [INFO] [stderr] | [INFO] [stderr] 8 | use std::collections::{HashMap, HashSet}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::f64::INFINITY` [INFO] [stderr] --> src/aco_mem.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::f64::INFINITY; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `memmap::MmapOptions` [INFO] [stderr] --> src/aco_memmap.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use memmap::MmapOptions; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::f32::INFINITY` [INFO] [stderr] --> src/aco_memmap.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | use std::f32::INFINITY; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::mem::transmute` [INFO] [stderr] --> src/aco_memmap.rs:14:5 [INFO] [stderr] | [INFO] [stderr] 14 | use std::mem::transmute; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `slice` [INFO] [stderr] --> src/aco_memmap.rs:15:16 [INFO] [stderr] | [INFO] [stderr] 15 | use std::{mem, slice}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `rayon::prelude` [INFO] [stderr] --> src/aco_mem.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use rayon::prelude::*; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/aco_mem.rs:153:13 [INFO] [stderr] | [INFO] [stderr] 153 | for i in 0..(self.distances.len() - 1) { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_i` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/aco_mem.rs:116:17 [INFO] [stderr] | [INFO] [stderr] 116 | let mut iteration_paths: Vec; [INFO] [stderr] | ----^^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/aco_memmap.rs:146:17 [INFO] [stderr] | [INFO] [stderr] 146 | let mut iteration_paths: Vec; [INFO] [stderr] | ----^^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/aco_no_mem.rs:136:17 [INFO] [stderr] | [INFO] [stderr] 136 | let mut iteration_paths: Vec; [INFO] [stderr] | ----^^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `euclidean_distance` [INFO] [stderr] --> src/aco_mem.rs:245:5 [INFO] [stderr] | [INFO] [stderr] 245 | fn euclidean_distance(a: &Coordinate, b: &Coordinate) -> f64 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.74s [INFO] running `"docker" "inspect" "fb3ae423f3b381bb4a170d5d66645dd2e22734dfaaa7da6495b9e305d43d4408"` [INFO] running `"docker" "rm" "-f" "fb3ae423f3b381bb4a170d5d66645dd2e22734dfaaa7da6495b9e305d43d4408"` [INFO] [stdout] fb3ae423f3b381bb4a170d5d66645dd2e22734dfaaa7da6495b9e305d43d4408 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rajasekarv/ant-colony-optimization:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] fdedf7709c246fa315ae336c5063c80aa4ef899d4f15e389065c88ec64756b82 [INFO] running `"docker" "start" "-a" "fdedf7709c246fa315ae336c5063c80aa4ef899d4f15e389065c88ec64756b82"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.09s [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/aco_rust-d088a5739b99a1e5 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/aco_using_memmap-069b3add40058ab6 [INFO] [stderr] Running /opt/crater/target/debug/deps/aco_using_no_ram-fd53abbcb4ffc60c [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/aco_using_ram-3cf85cbb76e89c12 [INFO] [stdout] running 0 tests [INFO] [stderr] Doc-tests aco_rust [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "fdedf7709c246fa315ae336c5063c80aa4ef899d4f15e389065c88ec64756b82"` [INFO] running `"docker" "rm" "-f" "fdedf7709c246fa315ae336c5063c80aa4ef899d4f15e389065c88ec64756b82"` [INFO] [stdout] fdedf7709c246fa315ae336c5063c80aa4ef899d4f15e389065c88ec64756b82