Dec 18 03:44:26.909 INFO checking athorwall/parser-combinators against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 03:44:26.909 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/athorwall/parser-combinators:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 03:44:27.248 INFO [stdout] fc6a51dc7d85816590eb1da9d763d44e41fd9c3bce7194ed52c74ae588704fe8
Dec 18 03:44:27.252 INFO running `"docker" "start" "-a" "fc6a51dc7d85816590eb1da9d763d44e41fd9c3bce7194ed52c74ae588704fe8"`
Dec 18 03:44:28.134 INFO [stderr]     Checking parser-combinators v0.1.0 (/opt/crater/workdir)
Dec 18 03:44:28.303 INFO [stderr] warning: unused variable: `value`
Dec 18 03:44:28.303 INFO [stderr]   --> src/parser.rs:42:26
Dec 18 03:44:28.303 INFO [stderr]    |
Dec 18 03:44:28.303 INFO [stderr] 42 |                     Some(value) => {
Dec 18 03:44:28.303 INFO [stderr]    |                          ^^^^^ help: consider using `_value` instead
Dec 18 03:44:28.303 INFO [stderr]    |
Dec 18 03:44:28.303 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 03:44:28.303 INFO [stderr] 
Dec 18 03:44:28.303 INFO [stderr] warning: unused variable: `new_input`
Dec 18 03:44:28.303 INFO [stderr]   --> src/parser.rs:43:33
Dec 18 03:44:28.303 INFO [stderr]    |
Dec 18 03:44:28.303 INFO [stderr] 43 |                         let mut new_input = input.clone();
Dec 18 03:44:28.303 INFO [stderr]    |                                 ^^^^^^^^^ help: consider using `_new_input` instead
Dec 18 03:44:28.303 INFO [stderr] 
Dec 18 03:44:28.328 INFO [stderr] warning: struct is never constructed: `Parser`
Dec 18 03:44:28.328 INFO [stderr]  --> src/parser.rs:3:1
Dec 18 03:44:28.328 INFO [stderr]   |
Dec 18 03:44:28.328 INFO [stderr] 3 | struct Parser<'a, T> {
Dec 18 03:44:28.328 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Dec 18 03:44:28.328 INFO [stderr]   |
Dec 18 03:44:28.328 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 03:44:28.328 INFO [stderr] 
Dec 18 03:44:28.328 INFO [stderr] warning: method is never used: `parse`
Dec 18 03:44:28.328 INFO [stderr]  --> src/parser.rs:8:5
Dec 18 03:44:28.328 INFO [stderr]   |
Dec 18 03:44:28.328 INFO [stderr] 8 |     pub fn parse(&self, input: &String) -> Result<T, String> {
Dec 18 03:44:28.328 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:44:28.328 INFO [stderr] 
Dec 18 03:44:28.328 INFO [stderr] warning: method is never used: `map`
Dec 18 03:44:28.329 INFO [stderr]   --> src/parser.rs:24:5
Dec 18 03:44:28.329 INFO [stderr]    |
Dec 18 03:44:28.329 INFO [stderr] 24 |     pub fn map<U>(self, func: Box<Fn(&T) -> U>) -> Parser<'a, U> where T: 'a, U: 'a {
Dec 18 03:44:28.329 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:44:28.329 INFO [stderr] 
Dec 18 03:44:28.329 INFO [stderr] warning: method is never used: `one`
Dec 18 03:44:28.329 INFO [stderr]   --> src/parser.rs:38:5
Dec 18 03:44:28.329 INFO [stderr]    |
Dec 18 03:44:28.329 INFO [stderr] 38 |     pub fn one(t: char) -> Parser<'a, char> {
Dec 18 03:44:28.329 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:44:28.329 INFO [stderr] 
Dec 18 03:44:28.329 INFO [stderr] warning: method is never used: `combine`
Dec 18 03:44:28.329 INFO [stderr]   --> src/parser.rs:62:5
Dec 18 03:44:28.329 INFO [stderr]    |
Dec 18 03:44:28.329 INFO [stderr] 62 | /     pub fn combine<'b, U>(p1: Parser<'b, U>, p2: Parser<'b, U>) -> Parser<'b, U>
Dec 18 03:44:28.329 INFO [stderr] 63 | |         where U: Copy + 'b {
Dec 18 03:44:28.329 INFO [stderr] 64 | |         Parser{
Dec 18 03:44:28.329 INFO [stderr] 65 | |             f: Box::from(move |input: &String| {
Dec 18 03:44:28.329 INFO [stderr] ...  |
Dec 18 03:44:28.329 INFO [stderr] 71 | |         }
Dec 18 03:44:28.329 INFO [stderr] 72 | |     }
Dec 18 03:44:28.329 INFO [stderr]    | |_____^
Dec 18 03:44:28.329 INFO [stderr] 
Dec 18 03:44:28.329 INFO [stderr] warning: method is never used: `option`
Dec 18 03:44:28.329 INFO [stderr]   --> src/parser.rs:75:5
Dec 18 03:44:28.329 INFO [stderr]    |
Dec 18 03:44:28.329 INFO [stderr] 75 | /     pub fn option<'b, U>(p1: Parser<'b, U>, p2: Parser<'b, U>) -> Parser<'b, U>
Dec 18 03:44:28.329 INFO [stderr] 76 | |         where U: Copy + 'b {
Dec 18 03:44:28.329 INFO [stderr] 77 | |         Parser{
Dec 18 03:44:28.329 INFO [stderr] 78 | |             f: Box::from(move |input: &String| {
Dec 18 03:44:28.329 INFO [stderr] ...  |
Dec 18 03:44:28.329 INFO [stderr] 86 | |         }
Dec 18 03:44:28.329 INFO [stderr] 87 | |     }
Dec 18 03:44:28.329 INFO [stderr]    | |_____^
Dec 18 03:44:28.329 INFO [stderr] 
Dec 18 03:44:28.329 INFO [stderr] warning: method is never used: `bind`
Dec 18 03:44:28.329 INFO [stderr]    --> src/parser.rs:90:5
Dec 18 03:44:28.329 INFO [stderr]     |
Dec 18 03:44:28.329 INFO [stderr] 90  | /     pub fn bind<'b, U, V>(p1: Parser<'b, U>, p2: Box<Fn(U) -> Parser<'b, V>>) -> Parser<'b, V>
Dec 18 03:44:28.329 INFO [stderr] 91  | |         where U: Copy + 'b, V: 'b {
Dec 18 03:44:28.329 INFO [stderr] 92  | |         Parser{
Dec 18 03:44:28.329 INFO [stderr] 93  | |             f: Box::from(move |input: &String| {
Dec 18 03:44:28.329 INFO [stderr] ...   |
Dec 18 03:44:28.329 INFO [stderr] 100 | |         }
Dec 18 03:44:28.329 INFO [stderr] 101 | |     }
Dec 18 03:44:28.329 INFO [stderr]     | |_____^
Dec 18 03:44:28.329 INFO [stderr] 
Dec 18 03:44:28.392 INFO [stderr] warning: unused variable: `value`
Dec 18 03:44:28.392 INFO [stderr]   --> src/parser.rs:42:26
Dec 18 03:44:28.392 INFO [stderr]    |
Dec 18 03:44:28.392 INFO [stderr] 42 |                     Some(value) => {
Dec 18 03:44:28.392 INFO [stderr]    |                          ^^^^^ help: consider using `_value` instead
Dec 18 03:44:28.392 INFO [stderr]    |
Dec 18 03:44:28.392 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 03:44:28.392 INFO [stderr] 
Dec 18 03:44:28.392 INFO [stderr] warning: unused variable: `new_input`
Dec 18 03:44:28.392 INFO [stderr]   --> src/parser.rs:43:33
Dec 18 03:44:28.392 INFO [stderr]    |
Dec 18 03:44:28.392 INFO [stderr] 43 |                         let mut new_input = input.clone();
Dec 18 03:44:28.392 INFO [stderr]    |                                 ^^^^^^^^^ help: consider using `_new_input` instead
Dec 18 03:44:28.392 INFO [stderr] 
Dec 18 03:44:28.418 INFO [stderr] warning: variable does not need to be mutable
Dec 18 03:44:28.418 INFO [stderr]    --> src/parser.rs:153:21
Dec 18 03:44:28.418 INFO [stderr]     |
Dec 18 03:44:28.418 INFO [stderr] 153 |                 let mut s = a.to_string();
Dec 18 03:44:28.418 INFO [stderr]     |                     ----^
Dec 18 03:44:28.418 INFO [stderr]     |                     |
Dec 18 03:44:28.418 INFO [stderr]     |                     help: remove this `mut`
Dec 18 03:44:28.418 INFO [stderr]     |
Dec 18 03:44:28.418 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 03:44:28.418 INFO [stderr] 
Dec 18 03:44:28.418 INFO [stderr] warning: variable does not need to be mutable
Dec 18 03:44:28.418 INFO [stderr]    --> src/parser.rs:153:21
Dec 18 03:44:28.418 INFO [stderr]     |
Dec 18 03:44:28.418 INFO [stderr] 153 |                 let mut s = a.to_string();
Dec 18 03:44:28.418 INFO [stderr]     |                     ----^
Dec 18 03:44:28.418 INFO [stderr]     |                     |
Dec 18 03:44:28.418 INFO [stderr]     |                     help: remove this `mut`
Dec 18 03:44:28.418 INFO [stderr] 
Dec 18 03:44:28.433 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
Dec 18 03:44:28.729 INFO running `"docker" "inspect" "fc6a51dc7d85816590eb1da9d763d44e41fd9c3bce7194ed52c74ae588704fe8"`
Dec 18 03:44:28.817 INFO running `"docker" "rm" "-f" "fc6a51dc7d85816590eb1da9d763d44e41fd9c3bce7194ed52c74ae588704fe8"`
Dec 18 03:44:28.938 INFO [stdout] fc6a51dc7d85816590eb1da9d763d44e41fd9c3bce7194ed52c74ae588704fe8