Dec 19 19:55:23.683 INFO checking benschau/rsh against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:55:23.683 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/benschau/rsh:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 19:55:24.052 INFO [stdout] 699d85f0c08e39f1b6365b99d260dd608363c84979178054b1021190a73ea87f
Dec 19 19:55:24.054 INFO running `"docker" "start" "-a" "699d85f0c08e39f1b6365b99d260dd608363c84979178054b1021190a73ea87f"`
Dec 19 19:55:25.544 INFO [stderr]     Checking rsh v0.1.0 (/opt/crater/workdir)
Dec 19 19:55:25.912 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 19:55:25.912 INFO [stderr]  --> src/lib.rs:7:5
Dec 19 19:55:25.912 INFO [stderr]   |
Dec 19 19:55:25.912 INFO [stderr] 7 | use std::fs::File;
Dec 19 19:55:25.912 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 19:55:25.912 INFO [stderr]   |
Dec 19 19:55:25.912 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 19:55:25.912 INFO [stderr] 
Dec 19 19:55:25.912 INFO [stderr] warning: unused import: `Stdio`
Dec 19 19:55:25.913 INFO [stderr]   --> src/lib.rs:11:29
Dec 19 19:55:25.913 INFO [stderr]    |
Dec 19 19:55:25.913 INFO [stderr] 11 | use std::process::{Command, Stdio};
Dec 19 19:55:25.913 INFO [stderr]    |                             ^^^^^
Dec 19 19:55:25.913 INFO [stderr] 
Dec 19 19:55:25.913 INFO [stderr] warning: unused imports: `FromRawFd`, `IntoRawFd`
Dec 19 19:55:25.913 INFO [stderr]   --> src/lib.rs:12:25
Dec 19 19:55:25.913 INFO [stderr]    |
Dec 19 19:55:25.913 INFO [stderr] 12 | use std::os::unix::io::{FromRawFd, IntoRawFd};
Dec 19 19:55:25.913 INFO [stderr]    |                         ^^^^^^^^^  ^^^^^^^^^
Dec 19 19:55:25.913 INFO [stderr] 
Dec 19 19:55:25.913 INFO [stderr] warning: unused import: `rustyline::error::ReadlineError`
Dec 19 19:55:25.913 INFO [stderr]   --> src/lib.rs:15:5
Dec 19 19:55:25.913 INFO [stderr]    |
Dec 19 19:55:25.913 INFO [stderr] 15 | use rustyline::error::ReadlineError;
Dec 19 19:55:25.913 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:55:25.913 INFO [stderr] 
Dec 19 19:55:25.913 INFO [stderr] warning: unused import: `nix::unistd::pipe`
Dec 19 19:55:25.913 INFO [stderr]   --> src/lib.rs:18:5
Dec 19 19:55:25.913 INFO [stderr]    |
Dec 19 19:55:25.913 INFO [stderr] 18 | use nix::unistd::pipe;
Dec 19 19:55:25.913 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 19 19:55:25.913 INFO [stderr] 
Dec 19 19:55:25.913 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 19 19:55:25.913 INFO [stderr]   --> src/builtin.rs:54:8
Dec 19 19:55:25.913 INFO [stderr]    |
Dec 19 19:55:25.913 INFO [stderr] 54 |     Ok((0))
Dec 19 19:55:25.913 INFO [stderr]    |        ^^^ help: remove these parentheses
Dec 19 19:55:25.913 INFO [stderr]    |
Dec 19 19:55:25.913 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 19:55:25.913 INFO [stderr] 
Dec 19 19:55:25.913 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 19 19:55:25.913 INFO [stderr]   --> src/builtin.rs:61:8
Dec 19 19:55:25.913 INFO [stderr]    |
Dec 19 19:55:25.913 INFO [stderr] 61 |     Ok((env::current_dir().unwrap()))
Dec 19 19:55:25.913 INFO [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 19:55:25.913 INFO [stderr] 
Dec 19 19:55:25.913 INFO [stderr] warning: unused import: `super::*`
Dec 19 19:55:25.913 INFO [stderr]    --> src/lib.rs:203:9
Dec 19 19:55:25.913 INFO [stderr]     |
Dec 19 19:55:25.913 INFO [stderr] 203 |     use super::*;
Dec 19 19:55:25.913 INFO [stderr]     |         ^^^^^^^^
Dec 19 19:55:25.913 INFO [stderr] 
Dec 19 19:55:25.952 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 19:55:25.952 INFO [stderr]  --> src/lib.rs:7:5
Dec 19 19:55:25.952 INFO [stderr]   |
Dec 19 19:55:25.952 INFO [stderr] 7 | use std::fs::File;
Dec 19 19:55:25.952 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 19:55:25.952 INFO [stderr]   |
Dec 19 19:55:25.952 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 19:55:25.952 INFO [stderr] 
Dec 19 19:55:25.952 INFO [stderr] warning: unused import: `Stdio`
Dec 19 19:55:25.952 INFO [stderr]   --> src/lib.rs:11:29
Dec 19 19:55:25.952 INFO [stderr]    |
Dec 19 19:55:25.952 INFO [stderr] 11 | use std::process::{Command, Stdio};
Dec 19 19:55:25.953 INFO [stderr]    |                             ^^^^^
Dec 19 19:55:25.953 INFO [stderr] 
Dec 19 19:55:25.953 INFO [stderr] warning: unused imports: `FromRawFd`, `IntoRawFd`
Dec 19 19:55:25.953 INFO [stderr]   --> src/lib.rs:12:25
Dec 19 19:55:25.953 INFO [stderr]    |
Dec 19 19:55:25.953 INFO [stderr] 12 | use std::os::unix::io::{FromRawFd, IntoRawFd};
Dec 19 19:55:25.953 INFO [stderr]    |                         ^^^^^^^^^  ^^^^^^^^^
Dec 19 19:55:25.953 INFO [stderr] 
Dec 19 19:55:25.953 INFO [stderr] warning: unused import: `rustyline::error::ReadlineError`
Dec 19 19:55:25.953 INFO [stderr]   --> src/lib.rs:15:5
Dec 19 19:55:25.953 INFO [stderr]    |
Dec 19 19:55:25.953 INFO [stderr] 15 | use rustyline::error::ReadlineError;
Dec 19 19:55:25.953 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:55:25.953 INFO [stderr] 
Dec 19 19:55:25.953 INFO [stderr] warning: unused import: `nix::unistd::pipe`
Dec 19 19:55:25.953 INFO [stderr]   --> src/lib.rs:18:5
Dec 19 19:55:25.953 INFO [stderr]    |
Dec 19 19:55:25.953 INFO [stderr] 18 | use nix::unistd::pipe;
Dec 19 19:55:25.953 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 19 19:55:25.953 INFO [stderr] 
Dec 19 19:55:25.953 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 19 19:55:25.953 INFO [stderr]   --> src/builtin.rs:54:8
Dec 19 19:55:25.953 INFO [stderr]    |
Dec 19 19:55:25.953 INFO [stderr] 54 |     Ok((0))
Dec 19 19:55:25.953 INFO [stderr]    |        ^^^ help: remove these parentheses
Dec 19 19:55:25.953 INFO [stderr]    |
Dec 19 19:55:25.953 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 19:55:25.953 INFO [stderr] 
Dec 19 19:55:25.953 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 19 19:55:25.953 INFO [stderr]   --> src/builtin.rs:61:8
Dec 19 19:55:25.953 INFO [stderr]    |
Dec 19 19:55:25.953 INFO [stderr] 61 |     Ok((env::current_dir().unwrap()))
Dec 19 19:55:25.953 INFO [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 19:55:25.953 INFO [stderr] 
Dec 19 19:55:26.144 INFO [stderr] warning: unused variable: `env`
Dec 19 19:55:26.144 INFO [stderr]   --> src/builtin.rs:38:15
Dec 19 19:55:26.144 INFO [stderr]    |
Dec 19 19:55:26.144 INFO [stderr] 38 | pub fn export(env: &[String]) -> Result<(), Box<Error>> {
Dec 19 19:55:26.145 INFO [stderr]    |               ^^^ help: consider using `_env` instead
Dec 19 19:55:26.145 INFO [stderr]    |
Dec 19 19:55:26.145 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 19:55:26.145 INFO [stderr] 
Dec 19 19:55:26.145 INFO [stderr] warning: unused variable: `string`
Dec 19 19:55:26.145 INFO [stderr]   --> src/builtin.rs:52:13
Dec 19 19:55:26.145 INFO [stderr]    |
Dec 19 19:55:26.145 INFO [stderr] 52 | pub fn hash(string: &str) -> Result<(u32), Box<Error>> {
Dec 19 19:55:26.145 INFO [stderr]    |             ^^^^^^ help: consider using `_string` instead
Dec 19 19:55:26.145 INFO [stderr] 
Dec 19 19:55:26.145 INFO [stderr] warning: unused variable: `stdin`
Dec 19 19:55:26.145 INFO [stderr]   --> src/lib.rs:48:9
Dec 19 19:55:26.145 INFO [stderr]    |
Dec 19 19:55:26.145 INFO [stderr] 48 |     let stdin = io::stdin();
Dec 19 19:55:26.145 INFO [stderr]    |         ^^^^^ help: consider using `_stdin` instead
Dec 19 19:55:26.145 INFO [stderr] 
Dec 19 19:55:26.145 INFO [stderr] warning: variable `pwd` is assigned to, but never used
Dec 19 19:55:26.145 INFO [stderr]   --> src/lib.rs:51:13
Dec 19 19:55:26.145 INFO [stderr]    |
Dec 19 19:55:26.145 INFO [stderr] 51 |     let mut pwd: PathBuf;
Dec 19 19:55:26.145 INFO [stderr]    |             ^^^
Dec 19 19:55:26.145 INFO [stderr]    |
Dec 19 19:55:26.145 INFO [stderr]    = note: consider using `_pwd` instead
Dec 19 19:55:26.145 INFO [stderr] 
Dec 19 19:55:26.145 INFO [stderr] warning: value assigned to `pwd` is never read
Dec 19 19:55:26.145 INFO [stderr]   --> src/lib.rs:63:9
Dec 19 19:55:26.145 INFO [stderr]    |
Dec 19 19:55:26.145 INFO [stderr] 63 |         pwd = builtin::pwd()?;
Dec 19 19:55:26.145 INFO [stderr]    |         ^^^
Dec 19 19:55:26.145 INFO [stderr]    |
Dec 19 19:55:26.145 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 19:55:26.145 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 19:55:26.145 INFO [stderr] 
Dec 19 19:55:26.145 INFO [stderr] warning: unused variable: `e`
Dec 19 19:55:26.145 INFO [stderr]    --> src/lib.rs:107:25
Dec 19 19:55:26.145 INFO [stderr]     |
Dec 19 19:55:26.145 INFO [stderr] 107 |                     Err(e) => {
Dec 19 19:55:26.145 INFO [stderr]     |                         ^ help: consider using `_e` instead
Dec 19 19:55:26.145 INFO [stderr] 
Dec 19 19:55:26.145 INFO [stderr] warning: unused variable: `config`
Dec 19 19:55:26.145 INFO [stderr]   --> src/lib.rs:47:12
Dec 19 19:55:26.145 INFO [stderr]    |
Dec 19 19:55:26.145 INFO [stderr] 47 | pub fn run(config: Config) -> Result<(), Box<Error>> {
Dec 19 19:55:26.145 INFO [stderr]    |            ^^^^^^ help: consider using `_config` instead
Dec 19 19:55:26.145 INFO [stderr] 
Dec 19 19:55:26.145 INFO [stderr] warning: unused variable: `i`
Dec 19 19:55:26.145 INFO [stderr]    --> src/lib.rs:171:10
Dec 19 19:55:26.145 INFO [stderr]     |
Dec 19 19:55:26.145 INFO [stderr] 171 |     for (i, token) in tokens.iter().enumerate() {
Dec 19 19:55:26.145 INFO [stderr]     |          ^ help: consider using `_i` instead
Dec 19 19:55:26.145 INFO [stderr] 
Dec 19 19:55:26.145 INFO [stderr] warning: unused variable: `filetype`
Dec 19 19:55:26.145 INFO [stderr]    --> src/lib.rs:207:13
Dec 19 19:55:26.145 INFO [stderr]     |
Dec 19 19:55:26.145 INFO [stderr] 207 |         let filetype = "startup";
Dec 19 19:55:26.145 INFO [stderr]     |             ^^^^^^^^ help: consider using `_filetype` instead
Dec 19 19:55:26.145 INFO [stderr] 
Dec 19 19:55:26.145 INFO [stderr] warning: unused variable: `filename`
Dec 19 19:55:26.145 INFO [stderr]    --> src/lib.rs:208:13
Dec 19 19:55:26.145 INFO [stderr]     |
Dec 19 19:55:26.145 INFO [stderr] 208 |         let filename = "./rshrc";
Dec 19 19:55:26.145 INFO [stderr]     |             ^^^^^^^^ help: consider using `_filename` instead
Dec 19 19:55:26.145 INFO [stderr] 
Dec 19 19:55:26.148 INFO [stderr] warning: unused variable: `env`
Dec 19 19:55:26.148 INFO [stderr]   --> src/builtin.rs:38:15
Dec 19 19:55:26.148 INFO [stderr]    |
Dec 19 19:55:26.148 INFO [stderr] 38 | pub fn export(env: &[String]) -> Result<(), Box<Error>> {
Dec 19 19:55:26.148 INFO [stderr]    |               ^^^ help: consider using `_env` instead
Dec 19 19:55:26.148 INFO [stderr]    |
Dec 19 19:55:26.148 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 19:55:26.148 INFO [stderr] 
Dec 19 19:55:26.149 INFO [stderr] warning: unused variable: `string`
Dec 19 19:55:26.149 INFO [stderr]   --> src/builtin.rs:52:13
Dec 19 19:55:26.149 INFO [stderr]    |
Dec 19 19:55:26.149 INFO [stderr] 52 | pub fn hash(string: &str) -> Result<(u32), Box<Error>> {
Dec 19 19:55:26.149 INFO [stderr]    |             ^^^^^^ help: consider using `_string` instead
Dec 19 19:55:26.149 INFO [stderr] 
Dec 19 19:55:26.149 INFO [stderr] warning: unused variable: `stdin`
Dec 19 19:55:26.149 INFO [stderr]   --> src/lib.rs:48:9
Dec 19 19:55:26.149 INFO [stderr]    |
Dec 19 19:55:26.149 INFO [stderr] 48 |     let stdin = io::stdin();
Dec 19 19:55:26.149 INFO [stderr]    |         ^^^^^ help: consider using `_stdin` instead
Dec 19 19:55:26.149 INFO [stderr] 
Dec 19 19:55:26.149 INFO [stderr] warning: variable `pwd` is assigned to, but never used
Dec 19 19:55:26.149 INFO [stderr]   --> src/lib.rs:51:13
Dec 19 19:55:26.149 INFO [stderr]    |
Dec 19 19:55:26.149 INFO [stderr] 51 |     let mut pwd: PathBuf;
Dec 19 19:55:26.149 INFO [stderr]    |             ^^^
Dec 19 19:55:26.149 INFO [stderr]    |
Dec 19 19:55:26.149 INFO [stderr]    = note: consider using `_pwd` instead
Dec 19 19:55:26.149 INFO [stderr] 
Dec 19 19:55:26.149 INFO [stderr] warning: value assigned to `pwd` is never read
Dec 19 19:55:26.149 INFO [stderr]   --> src/lib.rs:63:9
Dec 19 19:55:26.149 INFO [stderr]    |
Dec 19 19:55:26.149 INFO [stderr] 63 |         pwd = builtin::pwd()?;
Dec 19 19:55:26.149 INFO [stderr]    |         ^^^
Dec 19 19:55:26.149 INFO [stderr]    |
Dec 19 19:55:26.149 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 19:55:26.149 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 19:55:26.149 INFO [stderr] 
Dec 19 19:55:26.149 INFO [stderr] warning: unused variable: `e`
Dec 19 19:55:26.149 INFO [stderr]    --> src/lib.rs:107:25
Dec 19 19:55:26.149 INFO [stderr]     |
Dec 19 19:55:26.149 INFO [stderr] 107 |                     Err(e) => {
Dec 19 19:55:26.149 INFO [stderr]     |                         ^ help: consider using `_e` instead
Dec 19 19:55:26.149 INFO [stderr] 
Dec 19 19:55:26.149 INFO [stderr] warning: unused variable: `config`
Dec 19 19:55:26.149 INFO [stderr]   --> src/lib.rs:47:12
Dec 19 19:55:26.149 INFO [stderr]    |
Dec 19 19:55:26.149 INFO [stderr] 47 | pub fn run(config: Config) -> Result<(), Box<Error>> {
Dec 19 19:55:26.149 INFO [stderr]    |            ^^^^^^ help: consider using `_config` instead
Dec 19 19:55:26.149 INFO [stderr] 
Dec 19 19:55:26.149 INFO [stderr] warning: unused variable: `i`
Dec 19 19:55:26.149 INFO [stderr]    --> src/lib.rs:171:10
Dec 19 19:55:26.149 INFO [stderr]     |
Dec 19 19:55:26.149 INFO [stderr] 171 |     for (i, token) in tokens.iter().enumerate() {
Dec 19 19:55:26.149 INFO [stderr]     |          ^ help: consider using `_i` instead
Dec 19 19:55:26.149 INFO [stderr] 
Dec 19 19:55:26.172 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:55:26.172 INFO [stderr]   --> src/lib.rs:52:9
Dec 19 19:55:26.172 INFO [stderr]    |
Dec 19 19:55:26.172 INFO [stderr] 52 |     let mut running: bool = true;
Dec 19 19:55:26.172 INFO [stderr]    |         ----^^^^^^^
Dec 19 19:55:26.172 INFO [stderr]    |         |
Dec 19 19:55:26.172 INFO [stderr]    |         help: remove this `mut`
Dec 19 19:55:26.172 INFO [stderr]    |
Dec 19 19:55:26.172 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 19:55:26.172 INFO [stderr] 
Dec 19 19:55:26.180 INFO [stderr] warning: static item is never used: `HELP`
Dec 19 19:55:26.180 INFO [stderr]   --> src/builtin.rs:10:1
Dec 19 19:55:26.180 INFO [stderr]    |
Dec 19 19:55:26.180 INFO [stderr] 10 | / static HELP: &'static str = "
Dec 19 19:55:26.180 INFO [stderr] 11 | |     exit - exits the shell.     
Dec 19 19:55:26.180 INFO [stderr] 12 | | ";
Dec 19 19:55:26.180 INFO [stderr]    | |__^
Dec 19 19:55:26.180 INFO [stderr]    |
Dec 19 19:55:26.180 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 19:55:26.181 INFO [stderr] 
Dec 19 19:55:26.181 INFO [stderr] warning: function is never used: `help`
Dec 19 19:55:26.181 INFO [stderr]   --> src/builtin.rs:17:1
Dec 19 19:55:26.181 INFO [stderr]    |
Dec 19 19:55:26.181 INFO [stderr] 17 | pub fn help() {
Dec 19 19:55:26.181 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 19 19:55:26.181 INFO [stderr] 
Dec 19 19:55:26.181 INFO [stderr] warning: function is never used: `cd`
Dec 19 19:55:26.181 INFO [stderr]   --> src/builtin.rs:31:1
Dec 19 19:55:26.181 INFO [stderr]    |
Dec 19 19:55:26.181 INFO [stderr] 31 | pub fn cd(path: PathBuf) {
Dec 19 19:55:26.181 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:55:26.181 INFO [stderr] 
Dec 19 19:55:26.181 INFO [stderr] warning: function is never used: `export`
Dec 19 19:55:26.181 INFO [stderr]   --> src/builtin.rs:38:1
Dec 19 19:55:26.181 INFO [stderr]    |
Dec 19 19:55:26.181 INFO [stderr] 38 | pub fn export(env: &[String]) -> Result<(), Box<Error>> {
Dec 19 19:55:26.181 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:55:26.181 INFO [stderr] 
Dec 19 19:55:26.181 INFO [stderr] warning: function is never used: `unset`
Dec 19 19:55:26.181 INFO [stderr]   --> src/builtin.rs:45:1
Dec 19 19:55:26.181 INFO [stderr]    |
Dec 19 19:55:26.181 INFO [stderr] 45 | pub fn unset() -> Result<(), Box<Error>> {
Dec 19 19:55:26.181 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:55:26.181 INFO [stderr] 
Dec 19 19:55:26.181 INFO [stderr] warning: function is never used: `hash`
Dec 19 19:55:26.181 INFO [stderr]   --> src/builtin.rs:52:1
Dec 19 19:55:26.181 INFO [stderr]    |
Dec 19 19:55:26.181 INFO [stderr] 52 | pub fn hash(string: &str) -> Result<(u32), Box<Error>> {
Dec 19 19:55:26.181 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:55:26.181 INFO [stderr] 
Dec 19 19:55:26.181 INFO [stderr] warning: field is never used: `stdin_fd`
Dec 19 19:55:26.181 INFO [stderr]    --> src/lib.rs:121:5
Dec 19 19:55:26.181 INFO [stderr]     |
Dec 19 19:55:26.181 INFO [stderr] 121 |     stdin_fd: c_int,
Dec 19 19:55:26.181 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Dec 19 19:55:26.181 INFO [stderr] 
Dec 19 19:55:26.181 INFO [stderr] warning: field is never used: `stdout_fd`
Dec 19 19:55:26.181 INFO [stderr]    --> src/lib.rs:122:5
Dec 19 19:55:26.181 INFO [stderr]     |
Dec 19 19:55:26.181 INFO [stderr] 122 |     stdout_fd: c_int,
Dec 19 19:55:26.181 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 19 19:55:26.181 INFO [stderr] 
Dec 19 19:55:26.181 INFO [stderr] warning: field is never used: `stderr_fd`
Dec 19 19:55:26.181 INFO [stderr]    --> src/lib.rs:123:5
Dec 19 19:55:26.181 INFO [stderr]     |
Dec 19 19:55:26.181 INFO [stderr] 123 |     stderr_fd: c_int,
Dec 19 19:55:26.181 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 19 19:55:26.181 INFO [stderr] 
Dec 19 19:55:26.181 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:55:26.181 INFO [stderr]   --> src/lib.rs:52:9
Dec 19 19:55:26.181 INFO [stderr]    |
Dec 19 19:55:26.181 INFO [stderr] 52 |     let mut running: bool = true;
Dec 19 19:55:26.181 INFO [stderr]    |         ----^^^^^^^
Dec 19 19:55:26.181 INFO [stderr]    |         |
Dec 19 19:55:26.181 INFO [stderr]    |         help: remove this `mut`
Dec 19 19:55:26.181 INFO [stderr]    |
Dec 19 19:55:26.181 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 19:55:26.181 INFO [stderr] 
Dec 19 19:55:26.200 INFO [stderr] warning: static item is never used: `HELP`
Dec 19 19:55:26.200 INFO [stderr]   --> src/builtin.rs:10:1
Dec 19 19:55:26.200 INFO [stderr]    |
Dec 19 19:55:26.200 INFO [stderr] 10 | / static HELP: &'static str = "
Dec 19 19:55:26.200 INFO [stderr] 11 | |     exit - exits the shell.     
Dec 19 19:55:26.200 INFO [stderr] 12 | | ";
Dec 19 19:55:26.201 INFO [stderr]    | |__^
Dec 19 19:55:26.201 INFO [stderr]    |
Dec 19 19:55:26.201 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 19:55:26.201 INFO [stderr] 
Dec 19 19:55:26.201 INFO [stderr] warning: function is never used: `help`
Dec 19 19:55:26.201 INFO [stderr]   --> src/builtin.rs:17:1
Dec 19 19:55:26.201 INFO [stderr]    |
Dec 19 19:55:26.201 INFO [stderr] 17 | pub fn help() {
Dec 19 19:55:26.201 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 19 19:55:26.201 INFO [stderr] 
Dec 19 19:55:26.201 INFO [stderr] warning: function is never used: `cd`
Dec 19 19:55:26.201 INFO [stderr]   --> src/builtin.rs:31:1
Dec 19 19:55:26.201 INFO [stderr]    |
Dec 19 19:55:26.201 INFO [stderr] 31 | pub fn cd(path: PathBuf) {
Dec 19 19:55:26.201 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:55:26.201 INFO [stderr] 
Dec 19 19:55:26.201 INFO [stderr] warning: function is never used: `export`
Dec 19 19:55:26.201 INFO [stderr]   --> src/builtin.rs:38:1
Dec 19 19:55:26.201 INFO [stderr]    |
Dec 19 19:55:26.201 INFO [stderr] 38 | pub fn export(env: &[String]) -> Result<(), Box<Error>> {
Dec 19 19:55:26.201 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:55:26.201 INFO [stderr] 
Dec 19 19:55:26.201 INFO [stderr] warning: function is never used: `unset`
Dec 19 19:55:26.201 INFO [stderr]   --> src/builtin.rs:45:1
Dec 19 19:55:26.201 INFO [stderr]    |
Dec 19 19:55:26.201 INFO [stderr] 45 | pub fn unset() -> Result<(), Box<Error>> {
Dec 19 19:55:26.201 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:55:26.201 INFO [stderr] 
Dec 19 19:55:26.201 INFO [stderr] warning: function is never used: `hash`
Dec 19 19:55:26.201 INFO [stderr]   --> src/builtin.rs:52:1
Dec 19 19:55:26.201 INFO [stderr]    |
Dec 19 19:55:26.201 INFO [stderr] 52 | pub fn hash(string: &str) -> Result<(u32), Box<Error>> {
Dec 19 19:55:26.201 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:55:26.201 INFO [stderr] 
Dec 19 19:55:26.201 INFO [stderr] warning: field is never used: `stdin_fd`
Dec 19 19:55:26.201 INFO [stderr]    --> src/lib.rs:121:5
Dec 19 19:55:26.201 INFO [stderr]     |
Dec 19 19:55:26.201 INFO [stderr] 121 |     stdin_fd: c_int,
Dec 19 19:55:26.201 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Dec 19 19:55:26.201 INFO [stderr] 
Dec 19 19:55:26.201 INFO [stderr] warning: field is never used: `stdout_fd`
Dec 19 19:55:26.201 INFO [stderr]    --> src/lib.rs:122:5
Dec 19 19:55:26.201 INFO [stderr]     |
Dec 19 19:55:26.201 INFO [stderr] 122 |     stdout_fd: c_int,
Dec 19 19:55:26.201 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 19 19:55:26.201 INFO [stderr] 
Dec 19 19:55:26.201 INFO [stderr] warning: field is never used: `stderr_fd`
Dec 19 19:55:26.201 INFO [stderr]    --> src/lib.rs:123:5
Dec 19 19:55:26.201 INFO [stderr]     |
Dec 19 19:55:26.201 INFO [stderr] 123 |     stderr_fd: c_int,
Dec 19 19:55:26.201 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 19 19:55:26.201 INFO [stderr] 
Dec 19 19:55:26.960 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
Dec 19 19:55:27.783 INFO running `"docker" "inspect" "699d85f0c08e39f1b6365b99d260dd608363c84979178054b1021190a73ea87f"`
Dec 19 19:55:28.099 INFO running `"docker" "rm" "-f" "699d85f0c08e39f1b6365b99d260dd608363c84979178054b1021190a73ea87f"`
Dec 19 19:55:28.352 INFO [stdout] 699d85f0c08e39f1b6365b99d260dd608363c84979178054b1021190a73ea87f