[INFO] updating cached repository moreheadm/nut-shell
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/moreheadm/nut-shell
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/moreheadm/nut-shell" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/moreheadm/nut-shell"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/moreheadm/nut-shell'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/moreheadm/nut-shell" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/moreheadm/nut-shell"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/moreheadm/nut-shell'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 062ff44b0416f47d3e302c90eae25863a5bd76e7
[INFO] sha for GitHub repo moreheadm/nut-shell: 062ff44b0416f47d3e302c90eae25863a5bd76e7
[INFO] validating manifest of moreheadm/nut-shell 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 moreheadm/nut-shell 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 moreheadm/nut-shell
[INFO] finished frobbing moreheadm/nut-shell
[INFO] frobbed toml for moreheadm/nut-shell written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/moreheadm/nut-shell/Cargo.toml
[INFO] started frobbing moreheadm/nut-shell
[INFO] finished frobbing moreheadm/nut-shell
[INFO] frobbed toml for moreheadm/nut-shell written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/moreheadm/nut-shell/Cargo.toml
[INFO] crate moreheadm/nut-shell 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 moreheadm/nut-shell against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/moreheadm/nut-shell:/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] fd10643f43f6ef3f5c2c6b8aba04b21abbb19f88b89f4d8f3aecc7a32fac8877
[INFO] running `"docker" "start" "-a" "fd10643f43f6ef3f5c2c6b8aba04b21abbb19f88b89f4d8f3aecc7a32fac8877"`
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking liner v0.4.4
[INFO] [stderr] warning[E0503]: cannot use `self.key_bindings` because it was mutably borrowed
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/liner-0.4.4/src/context.rs:98:17
[INFO] [stderr]    |
[INFO] [stderr] 96 |             let ed = try!(Editor::new_with_init_buffer(stdout, prompt, self, buffer));
[INFO] [stderr]    |                                                                        ---- borrow of `*self` occurs here
[INFO] [stderr] 97 |             match self.key_bindings {
[INFO] [stderr] 98 |                 KeyBindings::Emacs => Self::handle_keys(keymap::Emacs::new(ed), handler),
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ use of borrowed `*self`
[INFO] [stderr] 99 |                 KeyBindings::Vi => Self::handle_keys(keymap::Vi::new(ed), handler),
[INFO] [stderr]    |                                                                      -- borrow later used here
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]    = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]    = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Checking nut-shell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `ParseOp`
[INFO] [stderr]   --> src/main.rs:10:32
[INFO] [stderr]    |
[INFO] [stderr] 10 | use parser::{ParseRes, Parsed, ParseOp};
[INFO] [stderr]    |                                ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufRead`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::BufRead;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stdin`
[INFO] [stderr]   --> src/main.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let stdin = io::stdin();
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_stdin`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `command`
[INFO] [stderr]   --> src/execute.rs:40:24
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn run_builtin(command: &Vec<String>) {
[INFO] [stderr]    |                        ^^^^^^^ help: consider prefixing with an underscore: `_command`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parsed`
[INFO] [stderr]   --> src/parser.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let parsed = try!(process_tokens(ast));
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_parsed`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `param`
[INFO] [stderr]   --> src/parser.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 | fn expand_param(param: String) -> ParseRes<String> {
[INFO] [stderr]    |                 ^^^^^ help: consider prefixing with an underscore: `_param`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/parser.rs:79:17
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn expand_arith(expr: String) -> ParseRes<String> {
[INFO] [stderr]    |                 ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]    --> src/parser.rs:365:28
[INFO] [stderr]     |
[INFO] [stderr] 365 | fn parse_unbracketed_param(text: &str) -> ParseRes<(Token, &str)> {
[INFO] [stderr]     |                            ^^^^ help: consider prefixing with an underscore: `_text`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]    --> src/parser.rs:379:21
[INFO] [stderr]     |
[INFO] [stderr] 379 | fn parse_arith_expr(text: &str) -> ParseRes<(Token, &str)> {
[INFO] [stderr]     |                     ^^^^ help: consider prefixing with an underscore: `_text`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]    --> src/parser.rs:389:26
[INFO] [stderr]     |
[INFO] [stderr] 389 | fn parse_bracketed_param(text: &str, mut curr_expr: String) -> ParseRes<(Token, &str)> {
[INFO] [stderr]     |                          ^^^^ help: consider prefixing with an underscore: `_text`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `curr_expr`
[INFO] [stderr]    --> src/parser.rs:389:42
[INFO] [stderr]     |
[INFO] [stderr] 389 | fn parse_bracketed_param(text: &str, mut curr_expr: String) -> ParseRes<(Token, &str)> {
[INFO] [stderr]     |                                          ^^^^^^^^^ help: consider prefixing with an underscore: `_curr_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ParseOp`
[INFO] [stderr]   --> src/main.rs:10:32
[INFO] [stderr]    |
[INFO] [stderr] 10 | use parser::{ParseRes, Parsed, ParseOp};
[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/parser.rs:389:38
[INFO] [stderr]     |
[INFO] [stderr] 389 | fn parse_bracketed_param(text: &str, mut curr_expr: String) -> ParseRes<(Token, &str)> {
[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: function is never used: `run_builtin`
[INFO] [stderr]   --> src/execute.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn run_builtin(command: &Vec<String>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `And`
[INFO] [stderr]  --> src/parser.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     And,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Or`
[INFO] [stderr]  --> src/parser.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Or,
[INFO] [stderr]   |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Seq`
[INFO] [stderr]  --> src/parser.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Seq,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Expr`
[INFO] [stderr]   --> src/parser.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     Expr(Box<Parsed>, Box<Parsed>, ParseOp),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Param`
[INFO] [stderr]   --> src/parser.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     Param(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Arith`
[INFO] [stderr]   --> src/parser.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Arith(String)
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufRead`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::BufRead;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stdin`
[INFO] [stderr]   --> src/main.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let stdin = io::stdin();
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_stdin`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `command`
[INFO] [stderr]   --> src/execute.rs:40:24
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn run_builtin(command: &Vec<String>) {
[INFO] [stderr]    |                        ^^^^^^^ help: consider prefixing with an underscore: `_command`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parsed`
[INFO] [stderr]   --> src/parser.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let parsed = try!(process_tokens(ast));
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_parsed`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `param`
[INFO] [stderr]   --> src/parser.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 | fn expand_param(param: String) -> ParseRes<String> {
[INFO] [stderr]    |                 ^^^^^ help: consider prefixing with an underscore: `_param`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/parser.rs:79:17
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn expand_arith(expr: String) -> ParseRes<String> {
[INFO] [stderr]    |                 ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]    --> src/parser.rs:365:28
[INFO] [stderr]     |
[INFO] [stderr] 365 | fn parse_unbracketed_param(text: &str) -> ParseRes<(Token, &str)> {
[INFO] [stderr]     |                            ^^^^ help: consider prefixing with an underscore: `_text`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]    --> src/parser.rs:379:21
[INFO] [stderr]     |
[INFO] [stderr] 379 | fn parse_arith_expr(text: &str) -> ParseRes<(Token, &str)> {
[INFO] [stderr]     |                     ^^^^ help: consider prefixing with an underscore: `_text`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]    --> src/parser.rs:389:26
[INFO] [stderr]     |
[INFO] [stderr] 389 | fn parse_bracketed_param(text: &str, mut curr_expr: String) -> ParseRes<(Token, &str)> {
[INFO] [stderr]     |                          ^^^^ help: consider prefixing with an underscore: `_text`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `curr_expr`
[INFO] [stderr]    --> src/parser.rs:389:42
[INFO] [stderr]     |
[INFO] [stderr] 389 | fn parse_bracketed_param(text: &str, mut curr_expr: String) -> ParseRes<(Token, &str)> {
[INFO] [stderr]     |                                          ^^^^^^^^^ help: consider prefixing with an underscore: `_curr_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `text`
[INFO] [stderr]    --> src/parser.rs:428:64
[INFO] [stderr]     |
[INFO] [stderr] 428 |         make_assert_success!(&str, ParseRes::Success( (tokens, text) ),
[INFO] [stderr]     |                                                                ^^^^ help: consider prefixing with an underscore: `_text`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parser.rs:389:38
[INFO] [stderr]     |
[INFO] [stderr] 389 | fn parse_bracketed_param(text: &str, mut curr_expr: String) -> ParseRes<(Token, &str)> {
[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: function is never used: `run_builtin`
[INFO] [stderr]   --> src/execute.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn run_builtin(command: &Vec<String>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `And`
[INFO] [stderr]  --> src/parser.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     And,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Or`
[INFO] [stderr]  --> src/parser.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Or,
[INFO] [stderr]   |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Seq`
[INFO] [stderr]  --> src/parser.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Seq,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Expr`
[INFO] [stderr]   --> src/parser.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     Expr(Box<Parsed>, Box<Parsed>, ParseOp),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Param`
[INFO] [stderr]   --> src/parser.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     Param(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Arith`
[INFO] [stderr]   --> src/parser.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Arith(String)
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.95s
[INFO] running `"docker" "inspect" "fd10643f43f6ef3f5c2c6b8aba04b21abbb19f88b89f4d8f3aecc7a32fac8877"`
[INFO] running `"docker" "rm" "-f" "fd10643f43f6ef3f5c2c6b8aba04b21abbb19f88b89f4d8f3aecc7a32fac8877"`
[INFO] [stdout] fd10643f43f6ef3f5c2c6b8aba04b21abbb19f88b89f4d8f3aecc7a32fac8877