[INFO] updating cached repository algon-320/msh
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/algon-320/msh
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/algon-320/msh" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/algon-320/msh"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/algon-320/msh'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/algon-320/msh" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/algon-320/msh"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/algon-320/msh'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d43c1b0f7ced6f993262e6566c498afff2c413c4
[INFO] sha for GitHub repo algon-320/msh: d43c1b0f7ced6f993262e6566c498afff2c413c4
[INFO] validating manifest of algon-320/msh on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of algon-320/msh on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing algon-320/msh
[INFO] finished frobbing algon-320/msh
[INFO] frobbed toml for algon-320/msh written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/algon-320/msh/Cargo.toml
[INFO] started frobbing algon-320/msh
[INFO] finished frobbing algon-320/msh
[INFO] frobbed toml for algon-320/msh written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/algon-320/msh/Cargo.toml
[INFO] crate algon-320/msh already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking algon-320/msh against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-0/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/algon-320/msh:/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 28e85ebfe35ea52eafb2b709497584f72667dfc2b40de41d07a44e676f5d6d03
[INFO] running `"docker" "start" "-a" "28e85ebfe35ea52eafb2b709497584f72667dfc2b40de41d07a44e676f5d6d03"`
[INFO] [stderr]    Compiling peg v0.5.7
[INFO] [stderr]    Compiling msh v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `nix::sys::signal`
[INFO] [stderr]  --> src/execute.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use nix::sys::signal;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]   --> src/execute.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::cell::RefCell;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/crater/target/debug/build/msh-3819d8084133ca5e/out/msh_grammar.rs:153:314
[INFO] [stderr]     |
[INFO] [stderr] 153 |  fn __parse_char_varname < 'input > ( __input : & 'input str , __state : & mut ParseState < 'input > , __pos : usize ) -> RuleResult < () > { # ! [ allow ( non_snake_case , unused ) ] { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { 'a' ... 'z' | 'A' ... 'Z' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[a-zA-Z]" ) , } } else { __state . mark_failure ( __pos , "[a-zA-Z]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '0' ... '9' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[0-9]" ) , } } else { __state . mark_failure ( __pos , "[0-9]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '_' | '-' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[_-]" ) , } } else { __state . mark_failure ( __pos , "[_-]" ) } } } } } } 
[INFO] [stderr]     |                                                                                                                                                                                                                                                                                                                          ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/crater/target/debug/build/msh-3819d8084133ca5e/out/msh_grammar.rs:153:328
[INFO] [stderr]     |
[INFO] [stderr] 153 |  fn __parse_char_varname < 'input > ( __input : & 'input str , __state : & mut ParseState < 'input > , __pos : usize ) -> RuleResult < () > { # ! [ allow ( non_snake_case , unused ) ] { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { 'a' ... 'z' | 'A' ... 'Z' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[a-zA-Z]" ) , } } else { __state . mark_failure ( __pos , "[a-zA-Z]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '0' ... '9' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[0-9]" ) , } } else { __state . mark_failure ( __pos , "[0-9]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '_' | '-' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[_-]" ) , } } else { __state . mark_failure ( __pos , "[_-]" ) } } } } } } 
[INFO] [stderr]     |                                                                                                                                                                                                                                                                                                                                        ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/crater/target/debug/build/msh-3819d8084133ca5e/out/msh_grammar.rs:153:701
[INFO] [stderr]     |
[INFO] [stderr] 153 |  fn __parse_char_varname < 'input > ( __input : & 'input str , __state : & mut ParseState < 'input > , __pos : usize ) -> RuleResult < () > { # ! [ allow ( non_snake_case , unused ) ] { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { 'a' ... 'z' | 'A' ... 'Z' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[a-zA-Z]" ) , } } else { __state . mark_failure ( __pos , "[a-zA-Z]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '0' ... '9' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[0-9]" ) , } } else { __state . mark_failure ( __pos , "[0-9]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '_' | '-' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[_-]" ) , } } else { __state . mark_failure ( __pos , "[_-]" ) } } } } } } 
[INFO] [stderr]     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nix::sys::signal`
[INFO] [stderr]  --> src/execute.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use nix::sys::signal;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]   --> src/execute.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::cell::RefCell;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/crater/target/debug/build/msh-3819d8084133ca5e/out/msh_grammar.rs:153:314
[INFO] [stderr]     |
[INFO] [stderr] 153 |  fn __parse_char_varname < 'input > ( __input : & 'input str , __state : & mut ParseState < 'input > , __pos : usize ) -> RuleResult < () > { # ! [ allow ( non_snake_case , unused ) ] { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { 'a' ... 'z' | 'A' ... 'Z' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[a-zA-Z]" ) , } } else { __state . mark_failure ( __pos , "[a-zA-Z]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '0' ... '9' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[0-9]" ) , } } else { __state . mark_failure ( __pos , "[0-9]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '_' | '-' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[_-]" ) , } } else { __state . mark_failure ( __pos , "[_-]" ) } } } } } } 
[INFO] [stderr]     |                                                                                                                                                                                                                                                                                                                          ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/crater/target/debug/build/msh-3819d8084133ca5e/out/msh_grammar.rs:153:328
[INFO] [stderr]     |
[INFO] [stderr] 153 |  fn __parse_char_varname < 'input > ( __input : & 'input str , __state : & mut ParseState < 'input > , __pos : usize ) -> RuleResult < () > { # ! [ allow ( non_snake_case , unused ) ] { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { 'a' ... 'z' | 'A' ... 'Z' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[a-zA-Z]" ) , } } else { __state . mark_failure ( __pos , "[a-zA-Z]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '0' ... '9' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[0-9]" ) , } } else { __state . mark_failure ( __pos , "[0-9]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '_' | '-' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[_-]" ) , } } else { __state . mark_failure ( __pos , "[_-]" ) } } } } } } 
[INFO] [stderr]     |                                                                                                                                                                                                                                                                                                                                        ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> /opt/crater/target/debug/build/msh-3819d8084133ca5e/out/msh_grammar.rs:153:701
[INFO] [stderr]     |
[INFO] [stderr] 153 |  fn __parse_char_varname < 'input > ( __input : & 'input str , __state : & mut ParseState < 'input > , __pos : usize ) -> RuleResult < () > { # ! [ allow ( non_snake_case , unused ) ] { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { 'a' ... 'z' | 'A' ... 'Z' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[a-zA-Z]" ) , } } else { __state . mark_failure ( __pos , "[a-zA-Z]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => { let __choice_res = if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '0' ... '9' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[0-9]" ) , } } else { __state . mark_failure ( __pos , "[0-9]" ) } ; match __choice_res { Matched ( __pos , __value ) => Matched ( __pos , __value ) , Failed => if __input . len ( ) > __pos { let ( __ch , __next ) = char_range_at ( __input , __pos ) ; match __ch { '_' | '-' => Matched ( __next , ( ) ) , _ => __state . mark_failure ( __pos , "[_-]" ) , } } else { __state . mark_failure ( __pos , "[_-]" ) } } } } } } 
[INFO] [stderr]     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `argv`
[INFO] [stderr]    --> src/builtin_commands.rs:113:40
[INFO] [stderr]     |
[INFO] [stderr] 113 | pub fn exit(_: &mut structures::Shell, argv: Vec<String>) -> execute::ExitCode {
[INFO] [stderr]     |                                        ^^^^ help: consider prefixing with an underscore: `_argv`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `argv`
[INFO] [stderr]    --> src/builtin_commands.rs:113:40
[INFO] [stderr]     |
[INFO] [stderr] 113 | pub fn exit(_: &mut structures::Shell, argv: Vec<String>) -> execute::ExitCode {
[INFO] [stderr]     |                                        ^^^^ help: consider prefixing with an underscore: `_argv`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `end_of_string`
[INFO] [stderr]    --> src/execute.rs:168:33
[INFO] [stderr]     |
[INFO] [stderr] 168 |             RedirectIn::Heredoc(end_of_string) => unimplemented!(),
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_end_of_string`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `end_of_string`
[INFO] [stderr]    --> src/execute.rs:168:33
[INFO] [stderr]     |
[INFO] [stderr] 168 |             RedirectIn::Heredoc(end_of_string) => unimplemented!(),
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_end_of_string`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `child`
[INFO] [stderr]    --> src/execute.rs:261:61
[INFO] [stderr]     |
[INFO] [stderr] 261 |                             Ok(unistd::ForkResult::Parent { child, .. }) => {}
[INFO] [stderr]     |                                                             ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `child`
[INFO] [stderr]    --> src/execute.rs:322:53
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     Ok(unistd::ForkResult::Parent { child, .. }) => {}
[INFO] [stderr]     |                                                     ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `child`
[INFO] [stderr]    --> src/execute.rs:261:61
[INFO] [stderr]     |
[INFO] [stderr] 261 |                             Ok(unistd::ForkResult::Parent { child, .. }) => {}
[INFO] [stderr]     |                                                             ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `child`
[INFO] [stderr]    --> src/execute.rs:322:53
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     Ok(unistd::ForkResult::Parent { child, .. }) => {}
[INFO] [stderr]     |                                                     ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `INDENT_WIDTH`
[INFO] [stderr]   --> src/structures.rs:87:1
[INFO] [stderr]    |
[INFO] [stderr] 87 | static INDENT_WIDTH: usize = 2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_indent`
[INFO] [stderr]   --> src/structures.rs:88:1
[INFO] [stderr]    |
[INFO] [stderr] 88 | fn gen_indent(d: usize) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]   --> src/structures.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/structures.rs:105:5
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/structures.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/structures.rs:149:5
[INFO] [stderr]     |
[INFO] [stderr] 149 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/structures.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/structures.rs:194:5
[INFO] [stderr]     |
[INFO] [stderr] 194 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `fromParent` should have a snake case name
[INFO] [stderr]   --> src/execute.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn fromParent(parent: &'a Shell<'a>) -> Shell<'a> {
[INFO] [stderr]    |            ^^^^^^^^^^ help: convert the identifier to snake case: `from_parent`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/execute.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |             cmds.exec(&mut subsehll, 0, 1, 2, Vec::new());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execute.rs:328:25
[INFO] [stderr]     |
[INFO] [stderr] 328 |                         unistd::dup2(stdin, 0).map_err(error_then_exit);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execute.rs:329:25
[INFO] [stderr]     |
[INFO] [stderr] 329 |                         unistd::dup2(stdout, 1).map_err(error_then_exit);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execute.rs:330:25
[INFO] [stderr]     |
[INFO] [stderr] 330 |                         unistd::dup2(stderr, 2).map_err(error_then_exit);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execute.rs:331:25
[INFO] [stderr]     |
[INFO] [stderr] 331 |                         child_shell.exec(cmds).map_err(error_then_exit);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execute.rs:393:25
[INFO] [stderr]     |
[INFO] [stderr] 393 |                         unistd::dup2(pfd.1, 1).map_err(error_then_exit);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `INDENT_WIDTH`
[INFO] [stderr]   --> src/structures.rs:87:1
[INFO] [stderr]    |
[INFO] [stderr] 87 | static INDENT_WIDTH: usize = 2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_indent`
[INFO] [stderr]   --> src/structures.rs:88:1
[INFO] [stderr]    |
[INFO] [stderr] 88 | fn gen_indent(d: usize) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]   --> src/structures.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/structures.rs:105:5
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/structures.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/structures.rs:149:5
[INFO] [stderr]     |
[INFO] [stderr] 149 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/structures.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]    --> src/structures.rs:194:5
[INFO] [stderr]     |
[INFO] [stderr] 194 |     pub fn print(&self, indent: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `fromParent` should have a snake case name
[INFO] [stderr]   --> src/execute.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn fromParent(parent: &'a Shell<'a>) -> Shell<'a> {
[INFO] [stderr]    |            ^^^^^^^^^^ help: convert the identifier to snake case: `from_parent`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/execute.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |             cmds.exec(&mut subsehll, 0, 1, 2, Vec::new());
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execute.rs:328:25
[INFO] [stderr]     |
[INFO] [stderr] 328 |                         unistd::dup2(stdin, 0).map_err(error_then_exit);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execute.rs:329:25
[INFO] [stderr]     |
[INFO] [stderr] 329 |                         unistd::dup2(stdout, 1).map_err(error_then_exit);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execute.rs:330:25
[INFO] [stderr]     |
[INFO] [stderr] 330 |                         unistd::dup2(stderr, 2).map_err(error_then_exit);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execute.rs:331:25
[INFO] [stderr]     |
[INFO] [stderr] 331 |                         child_shell.exec(cmds).map_err(error_then_exit);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execute.rs:393:25
[INFO] [stderr]     |
[INFO] [stderr] 393 |                         unistd::dup2(pfd.1, 1).map_err(error_then_exit);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.23s
[INFO] running `"docker" "inspect" "28e85ebfe35ea52eafb2b709497584f72667dfc2b40de41d07a44e676f5d6d03"`
[INFO] running `"docker" "rm" "-f" "28e85ebfe35ea52eafb2b709497584f72667dfc2b40de41d07a44e676f5d6d03"`
[INFO] [stdout] 28e85ebfe35ea52eafb2b709497584f72667dfc2b40de41d07a44e676f5d6d03