[INFO] updating cached repository https://github.com/jasonhansel/paraphrase
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ce446649cb3b9538fff5ad09560720368c7e7eab
[INFO] checking jasonhansel/paraphrase against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjasonhansel%2Fparaphrase" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jasonhansel/paraphrase on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jasonhansel/paraphrase
[INFO] finished tweaking git repo https://github.com/jasonhansel/paraphrase
[INFO] tweaked toml for git repo https://github.com/jasonhansel/paraphrase written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/jasonhansel/paraphrase already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 34a3e20dceb689a27f1bcc7ee3c5c3e7ee9556580bc6bc5a235b63ea0af50956
[INFO] running `"docker" "start" "-a" "34a3e20dceb689a27f1bcc7ee3c5c3e7ee9556580bc6bc5a235b63ea0af50956"`
[INFO] [stderr]     Checking num-traits v0.1.42
[INFO] [stderr]     Checking clap v2.29.2
[INFO] [stderr]     Checking serde_json v1.0.9
[INFO] [stderr]     Checking structopt v0.1.7
[INFO] [stderr]     Checking paraphrase v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `IndexMut`, `Index`
[INFO] [stderr]   --> src/value.rs:13:20
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ops::{Add,Index,IndexMut};
[INFO] [stderr]    |                    ^^^^^ ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `let` head expression
[INFO] [stderr]    --> src/base.rs:201:36
[INFO] [stderr]     |
[INFO] [stderr] 201 |                 if let Some(tag) = (name_tag.get(1)) {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `UnwindSafe`
[INFO] [stderr]   --> src/expand.rs:16:18
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::panic::{UnwindSafe,AssertUnwindSafe};
[INFO] [stderr]    |                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/expand.rs:73:23
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub type Fut<T> = Box<Future<Item=T,Error=Box<Any+Send>> + Send>;
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T,Error=Box<Any+Send>> + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/expand.rs:73:47
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub type Fut<T> = Box<Future<Item=T,Error=Box<Any+Send>> + Send>;
[INFO] [stderr]    |                                               ^^^^^^^^ help: use `dyn`: `dyn Any+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/expand.rs:238:41
[INFO] [stderr]     |
[INFO] [stderr] 238 |         self.final_join = Some(Box::new((self.handle_call(cmd, call))));
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/expand.rs:407:26
[INFO] [stderr]     |
[INFO] [stderr] 407 |                   Box::new((final_join.map(|w| {
[INFO] [stderr]     |  __________________________^
[INFO] [stderr] 408 | |                     match w {
[INFO] [stderr] 409 | |                         EvalResult::Expand(new_scope, new_rope) => Loop::Continue((joins, new_scope, new_rope)),
[INFO] [stderr] 410 | |                         EvalResult::Done(val) => {
[INFO] [stderr] ...   |
[INFO] [stderr] 414 | |                     }
[INFO] [stderr] 415 | |                 })))  as Fut<Loop<_,_>>
[INFO] [stderr]     | |___________________^
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 407 |                 Box::new(final_join.map(|w| {
[INFO] [stderr] 408 |                     match w {
[INFO] [stderr] 409 |                         EvalResult::Expand(new_scope, new_rope) => Loop::Continue((joins, new_scope, new_rope)),
[INFO] [stderr] 410 |                         EvalResult::Done(val) => {
[INFO] [stderr] 411 |                             joins.push(Box::new(ok(Rope::from_value(val))));
[INFO] [stderr] 412 |                             Loop::Break(joins)
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/expand.rs:431:18
[INFO] [stderr]     |
[INFO] [stderr] 431 |         ) as Box<Future<Item=Value,Error=Box<Any+Send>>+Send> ))
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=Value,Error=Box<Any+Send>>+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/expand.rs:431:46
[INFO] [stderr]     |
[INFO] [stderr] 431 |         ) as Box<Future<Item=Value,Error=Box<Any+Send>>+Send> ))
[INFO] [stderr]     |                                              ^^^^^^^^ help: use `dyn`: `dyn Any+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CpuFuture`
[INFO] [stderr]   --> src/main.rs:38:23
[INFO] [stderr]    |
[INFO] [stderr] 38 | use futures_cpupool::{CpuFuture, CpuPool};
[INFO] [stderr]    |                       ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]   --> src/main.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 | use std::borrow::Cow;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/main.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 | use std::rc::Rc;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `IndexMut`, `Index`
[INFO] [stderr]   --> src/value.rs:13:20
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ops::{Add,Index,IndexMut};
[INFO] [stderr]    |                    ^^^^^ ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `let` head expression
[INFO] [stderr]    --> src/base.rs:201:36
[INFO] [stderr]     |
[INFO] [stderr] 201 |                 if let Some(tag) = (name_tag.get(1)) {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `UnwindSafe`
[INFO] [stderr]   --> src/expand.rs:16:18
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::panic::{UnwindSafe,AssertUnwindSafe};
[INFO] [stderr]    |                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/expand.rs:73:23
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub type Fut<T> = Box<Future<Item=T,Error=Box<Any+Send>> + Send>;
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T,Error=Box<Any+Send>> + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/expand.rs:73:47
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub type Fut<T> = Box<Future<Item=T,Error=Box<Any+Send>> + Send>;
[INFO] [stderr]    |                                               ^^^^^^^^ help: use `dyn`: `dyn Any+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/expand.rs:238:41
[INFO] [stderr]     |
[INFO] [stderr] 238 |         self.final_join = Some(Box::new((self.handle_call(cmd, call))));
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/expand.rs:407:26
[INFO] [stderr]     |
[INFO] [stderr] 407 |                   Box::new((final_join.map(|w| {
[INFO] [stderr]     |  __________________________^
[INFO] [stderr] 408 | |                     match w {
[INFO] [stderr] 409 | |                         EvalResult::Expand(new_scope, new_rope) => Loop::Continue((joins, new_scope, new_rope)),
[INFO] [stderr] 410 | |                         EvalResult::Done(val) => {
[INFO] [stderr] ...   |
[INFO] [stderr] 414 | |                     }
[INFO] [stderr] 415 | |                 })))  as Fut<Loop<_,_>>
[INFO] [stderr]     | |___________________^
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 407 |                 Box::new(final_join.map(|w| {
[INFO] [stderr] 408 |                     match w {
[INFO] [stderr] 409 |                         EvalResult::Expand(new_scope, new_rope) => Loop::Continue((joins, new_scope, new_rope)),
[INFO] [stderr] 410 |                         EvalResult::Done(val) => {
[INFO] [stderr] 411 |                             joins.push(Box::new(ok(Rope::from_value(val))));
[INFO] [stderr] 412 |                             Loop::Break(joins)
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/expand.rs:431:18
[INFO] [stderr]     |
[INFO] [stderr] 431 |         ) as Box<Future<Item=Value,Error=Box<Any+Send>>+Send> ))
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=Value,Error=Box<Any+Send>>+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/expand.rs:431:46
[INFO] [stderr]     |
[INFO] [stderr] 431 |         ) as Box<Future<Item=Value,Error=Box<Any+Send>>+Send> ))
[INFO] [stderr]     |                                              ^^^^^^^^ help: use `dyn`: `dyn Any+Send`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `CpuFuture`
[INFO] [stderr]   --> src/main.rs:38:23
[INFO] [stderr]    |
[INFO] [stderr] 38 | use futures_cpupool::{CpuFuture, CpuPool};
[INFO] [stderr]    |                       ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Cow`
[INFO] [stderr]   --> src/main.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 | use std::borrow::Cow;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/main.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 | use std::rc::Rc;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/value.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         return self.to_str().to_owned();
[INFO] [stderr]    |         ------------------------------- any code following this expression is unreachable
[INFO] [stderr] 54 | 
[INFO] [stderr] 55 |         let range = self.range.clone();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/value.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         return self.to_str().to_owned();
[INFO] [stderr]    |         ------------------------------- any code following this expression is unreachable
[INFO] [stderr] 54 | 
[INFO] [stderr] 55 |         let range = self.range.clone();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_scope`
[INFO] [stderr]    --> src/expand.rs:306:25
[INFO] [stderr]     |
[INFO] [stderr] 306 |                     let new_scope = scope.clone();
[INFO] [stderr]     |                         ^^^^^^^^^ help: consider prefixing with an underscore: `_new_scope`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]    --> src/expand.rs:385:9
[INFO] [stderr]     |
[INFO] [stderr] 385 |     let id = rand::random::<u64>();
[INFO] [stderr]     |         ^^ help: consider prefixing with an underscore: `_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scope`
[INFO] [stderr]    --> src/expand.rs:186:17
[INFO] [stderr]     |
[INFO] [stderr] 186 |             let scope = self.scope.clone();
[INFO] [stderr]     |                 ^^^^^ help: consider prefixing with an underscore: `_scope`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pool2`
[INFO] [stderr]    --> src/expand.rs:187:17
[INFO] [stderr]     |
[INFO] [stderr] 187 |             let pool2 = self.pool.clone();
[INFO] [stderr]     |                 ^^^^^ help: consider prefixing with an underscore: `_pool2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scope`
[INFO] [stderr]    --> src/expand.rs:179:54
[INFO] [stderr]     |
[INFO] [stderr] 179 |     fn end_command(&mut self, cmd: Vec<CommandPart>, scope: Arc<Scope>) {
[INFO] [stderr]     |                                                      ^^^^^ help: consider prefixing with an underscore: `_scope`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scope.rs:196:41
[INFO] [stderr]     |
[INFO] [stderr] 196 |              code(args.into_iter().map(|mut x| { x }).collect())
[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/base.rs:116:87
[INFO] [stderr]     |
[INFO] [stderr] 116 |         (Some(Str(n)), Some(Str(replacement)), Some(Closure(ValueClosure(inner_scope, mut h))), None, ..) => {
[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/base.rs:136:17
[INFO] [stderr]     |
[INFO] [stderr] 136 |             let mut todo = if value_a == value_b { if_true } else { if_false };
[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/base.rs:146:17
[INFO] [stderr]     |
[INFO] [stderr] 146 |             let mut todo = (if value_a == value_b { if_true } else { if_false }).force_clone().1;
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_scope`
[INFO] [stderr]    --> src/expand.rs:306:25
[INFO] [stderr]     |
[INFO] [stderr] 306 |                     let new_scope = scope.clone();
[INFO] [stderr]     |                         ^^^^^^^^^ help: consider prefixing with an underscore: `_new_scope`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]    --> src/expand.rs:385:9
[INFO] [stderr]     |
[INFO] [stderr] 385 |     let id = rand::random::<u64>();
[INFO] [stderr]     |         ^^ help: consider prefixing with an underscore: `_id`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/base.rs:232:17
[INFO] [stderr]     |
[INFO] [stderr] 232 |             let mut params = vec![];
[INFO] [stderr]     |                 ----^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scope`
[INFO] [stderr]    --> src/expand.rs:186:17
[INFO] [stderr]     |
[INFO] [stderr] 186 |             let scope = self.scope.clone();
[INFO] [stderr]     |                 ^^^^^ help: consider prefixing with an underscore: `_scope`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pool2`
[INFO] [stderr]    --> src/expand.rs:187:17
[INFO] [stderr]     |
[INFO] [stderr] 187 |             let pool2 = self.pool.clone();
[INFO] [stderr]     |                 ^^^^^ help: consider prefixing with an underscore: `_pool2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scope`
[INFO] [stderr]    --> src/expand.rs:179:54
[INFO] [stderr]     |
[INFO] [stderr] 179 |     fn end_command(&mut self, cmd: Vec<CommandPart>, scope: Arc<Scope>) {
[INFO] [stderr]     |                                                      ^^^^^ help: consider prefixing with an underscore: `_scope`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/expand.rs:220:29
[INFO] [stderr]     |
[INFO] [stderr] 220 |     fn raw_param(&mut self, mut rope: Rope) {
[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/expand.rs:227:54
[INFO] [stderr]     |
[INFO] [stderr] 227 |     fn semi_param(&mut self, stack: Vec<ParseEntry>, mut rope: Rope, cmd: Vec<CommandPart>) {
[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/expand.rs:240:24
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn text(&mut self, mut rope: Rope) {
[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/expand.rs:389:92
[INFO] [stderr]     |
[INFO] [stderr] 389 |         loop_fn(( (vec![] as Vec<Fut<Rope>>), _scope, _rope), move |(mut joins, mut scope, mut rope)| {
[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/scope.rs:196:41
[INFO] [stderr]     |
[INFO] [stderr] 196 |              code(args.into_iter().map(|mut x| { x }).collect())
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |             file.read_to_string(&mut s);
[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/value.rs:356:9
[INFO] [stderr]     |
[INFO] [stderr] 356 |         write!(f, "CODE<");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `latest_tag` should have an upper case name
[INFO] [stderr]   --> src/scope.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | static latest_tag : AtomicUsize = AtomicUsize::new(0);
[INFO] [stderr]    |        ^^^^^^^^^^ help: convert the identifier to upper case: `LATEST_TAG`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/scope.rs:40:76
[INFO] [stderr]    |
[INFO] [stderr] 40 |             &User(ref s, _, ref v) => { write!(f, "params (")?; s.fmt(f)?; write!(f, ") in "); v.fmt(f) },
[INFO] [stderr]    |                                                                            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/base.rs:116:87
[INFO] [stderr]     |
[INFO] [stderr] 116 |         (Some(Str(n)), Some(Str(replacement)), Some(Closure(ValueClosure(inner_scope, mut h))), None, ..) => {
[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/base.rs:136:17
[INFO] [stderr]     |
[INFO] [stderr] 136 |             let mut todo = if value_a == value_b { if_true } else { if_false };
[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/base.rs:146:17
[INFO] [stderr]     |
[INFO] [stderr] 146 |             let mut todo = (if value_a == value_b { if_true } else { if_false }).force_clone().1;
[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/base.rs:232:17
[INFO] [stderr]     |
[INFO] [stderr] 232 |             let mut params = 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/expand.rs:220:29
[INFO] [stderr]     |
[INFO] [stderr] 220 |     fn raw_param(&mut self, mut rope: Rope) {
[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/expand.rs:227:54
[INFO] [stderr]     |
[INFO] [stderr] 227 |     fn semi_param(&mut self, stack: Vec<ParseEntry>, mut rope: Rope, cmd: Vec<CommandPart>) {
[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/expand.rs:240:24
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn text(&mut self, mut rope: Rope) {
[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/expand.rs:389:92
[INFO] [stderr]     |
[INFO] [stderr] 389 |         loop_fn(( (vec![] as Vec<Fut<Rope>>), _scope, _rope), move |(mut joins, mut scope, mut rope)| {
[INFO] [stderr]     |                                                                                            ----^^^^
[INFO] [stderr]     |                                                                                            |
[INFO] [stderr]     |                                                                                            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |             file.read_to_string(&mut s);
[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/value.rs:356:9
[INFO] [stderr]     |
[INFO] [stderr] 356 |         write!(f, "CODE<");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `latest_tag` should have an upper case name
[INFO] [stderr]   --> src/scope.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | static latest_tag : AtomicUsize = AtomicUsize::new(0);
[INFO] [stderr]    |        ^^^^^^^^^^ help: convert the identifier to upper case: `LATEST_TAG`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/scope.rs:40:76
[INFO] [stderr]    |
[INFO] [stderr] 40 |             &User(ref s, _, ref v) => { write!(f, "params (")?; s.fmt(f)?; write!(f, ") in "); v.fmt(f) },
[INFO] [stderr]    |                                                                            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.18s
[INFO] running `"docker" "inspect" "34a3e20dceb689a27f1bcc7ee3c5c3e7ee9556580bc6bc5a235b63ea0af50956"`
[INFO] running `"docker" "rm" "-f" "34a3e20dceb689a27f1bcc7ee3c5c3e7ee9556580bc6bc5a235b63ea0af50956"`
[INFO] [stdout] 34a3e20dceb689a27f1bcc7ee3c5c3e7ee9556580bc6bc5a235b63ea0af50956