Dec 17 10:41:49.182 INFO checking zyxw59/formatting against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 10:41:49.182 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/zyxw59/formatting:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 10:41:49.464 INFO [stdout] a7ca0aa89fbcae0f811ac103499df5807a3582e050d7f3e4948da8dcb570d611
Dec 17 10:41:49.467 INFO running `"docker" "start" "-a" "a7ca0aa89fbcae0f811ac103499df5807a3582e050d7f3e4948da8dcb570d611"`
Dec 17 10:41:50.684 INFO [stderr]    Compiling cc v1.0.13
Dec 17 10:41:50.684 INFO [stderr]    Compiling unicode-xid v0.0.4
Dec 17 10:41:50.684 INFO [stderr]    Compiling quote v0.3.15
Dec 17 10:41:50.684 INFO [stderr]     Checking libc v0.2.40
Dec 17 10:41:50.684 INFO [stderr]     Checking cfg-if v0.1.2
Dec 17 10:41:50.684 INFO [stderr]     Checking rustc-demangle v0.1.7
Dec 17 10:41:51.168 INFO [stderr]    Compiling synom v0.11.3
Dec 17 10:41:52.645 INFO [stderr]    Compiling syn v0.11.11
Dec 17 10:41:56.519 INFO [stderr]    Compiling backtrace-sys v0.1.16
Dec 17 10:42:03.225 INFO [stderr]    Compiling synstructure v0.6.1
Dec 17 10:42:06.498 INFO [stderr]    Compiling failure_derive v0.1.1
Dec 17 10:42:14.604 INFO [stderr]     Checking backtrace v0.3.6
Dec 17 10:42:15.120 INFO [stderr]     Checking failure v0.1.1
Dec 17 10:42:15.492 INFO [stderr]     Checking formatting v0.1.0 (/opt/crater/workdir)
Dec 17 10:42:15.596 INFO [stderr] warning: unused `#[macro_use]` import
Dec 17 10:42:15.596 INFO [stderr]  --> src/main.rs:2:1
Dec 17 10:42:15.596 INFO [stderr]   |
Dec 17 10:42:15.596 INFO [stderr] 2 | #[macro_use]
Dec 17 10:42:15.596 INFO [stderr]   | ^^^^^^^^^^^^
Dec 17 10:42:15.596 INFO [stderr]   |
Dec 17 10:42:15.596 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 10:42:15.596 INFO [stderr] 
Dec 17 10:42:15.596 INFO [stderr] warning: unused imports: `Backtrace`, `Context`, `Fail`, `ResultExt`
Dec 17 10:42:15.596 INFO [stderr]  --> src/parser/mod.rs:1:15
Dec 17 10:42:15.596 INFO [stderr]   |
Dec 17 10:42:15.596 INFO [stderr] 1 | use failure::{Backtrace, Context, Fail, ResultExt};
Dec 17 10:42:15.596 INFO [stderr]   |               ^^^^^^^^^  ^^^^^^^  ^^^^  ^^^^^^^^^
Dec 17 10:42:15.596 INFO [stderr] 
Dec 17 10:42:15.596 INFO [stderr] warning: unused imports: `ErrorKind`, `Error`
Dec 17 10:42:15.596 INFO [stderr]  --> src/parser/mod.rs:3:14
Dec 17 10:42:15.596 INFO [stderr]   |
Dec 17 10:42:15.596 INFO [stderr] 3 | use errors::{Error, ErrorKind};
Dec 17 10:42:15.596 INFO [stderr]   |              ^^^^^  ^^^^^^^^^
Dec 17 10:42:15.596 INFO [stderr] 
Dec 17 10:42:15.596 INFO [stderr] warning: unused imports: `Backtrace`, `Context`, `Fail`
Dec 17 10:42:15.596 INFO [stderr]  --> src/parser/bufread.rs:3:15
Dec 17 10:42:15.596 INFO [stderr]   |
Dec 17 10:42:15.596 INFO [stderr] 3 | use failure::{Backtrace, Context, Fail, ResultExt};
Dec 17 10:42:15.596 INFO [stderr]   |               ^^^^^^^^^  ^^^^^^^  ^^^^
Dec 17 10:42:15.596 INFO [stderr] 
Dec 17 10:42:15.684 INFO [stderr] warning: method is never used: `kind`
Dec 17 10:42:15.684 INFO [stderr]   --> src/errors.rs:12:5
Dec 17 10:42:15.684 INFO [stderr]    |
Dec 17 10:42:15.684 INFO [stderr] 12 |     pub fn kind(&self) -> ErrorKind {
Dec 17 10:42:15.684 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.684 INFO [stderr]    |
Dec 17 10:42:15.684 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 10:42:15.684 INFO [stderr] 
Dec 17 10:42:15.684 INFO [stderr] warning: variant is never constructed: `EndOfInput`
Dec 17 10:42:15.684 INFO [stderr]   --> src/errors.rs:50:5
Dec 17 10:42:15.684 INFO [stderr]    |
Dec 17 10:42:15.684 INFO [stderr] 50 |     EndOfInput,
Dec 17 10:42:15.684 INFO [stderr]    |     ^^^^^^^^^^
Dec 17 10:42:15.684 INFO [stderr] 
Dec 17 10:42:15.688 INFO [stderr] warning: variant is never constructed: `UnclosedVerbatim`
Dec 17 10:42:15.689 INFO [stderr]   --> src/errors.rs:52:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 52 |     UnclosedVerbatim(usize, usize),
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: variant is never constructed: `Unicode`
Dec 17 10:42:15.689 INFO [stderr]   --> src/errors.rs:54:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 54 |     Unicode(usize),
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: variant is never constructed: `Io`
Dec 17 10:42:15.689 INFO [stderr]   --> src/errors.rs:56:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 56 |     Io(usize),
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: method is never used: `from_io`
Dec 17 10:42:15.689 INFO [stderr]   --> src/errors.rs:60:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 60 |     pub fn from_io(err: &io::Error, line: usize) -> ErrorKind {
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: struct is never constructed: `BufReadIter`
Dec 17 10:42:15.689 INFO [stderr]   --> src/parser/bufread.rs:12:1
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 12 | pub struct BufReadIter<R> {
Dec 17 10:42:15.689 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: method is never used: `new`
Dec 17 10:42:15.689 INFO [stderr]   --> src/parser/bufread.rs:22:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 22 |     pub fn new(input: R) -> BufReadIter<R> {
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: method is never used: `column`
Dec 17 10:42:15.689 INFO [stderr]   --> src/parser/bufread.rs:33:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 33 |     pub fn column(&self) -> usize {
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: method is never used: `line`
Dec 17 10:42:15.689 INFO [stderr]   --> src/parser/bufread.rs:38:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 38 |     pub fn line(&self) -> usize {
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: method is never used: `fill_buffer`
Dec 17 10:42:15.689 INFO [stderr]   --> src/parser/bufread.rs:43:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 43 |     fn fill_buffer(&mut self) -> Result<(), Error> {
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: method is never used: `next`
Dec 17 10:42:15.689 INFO [stderr]   --> src/parser/bufread.rs:55:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 55 |     pub fn next(&mut self) -> Result<Option<char>, Error> {
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: method is never used: `expect_next`
Dec 17 10:42:15.689 INFO [stderr]   --> src/parser/bufread.rs:66:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 66 |     pub fn expect_next(&mut self) -> Result<char, Error> {
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: method is never used: `current`
Dec 17 10:42:15.689 INFO [stderr]   --> src/parser/bufread.rs:72:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 72 |     pub fn current(&self) -> Option<&char> {
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: method is never used: `peek`
Dec 17 10:42:15.689 INFO [stderr]   --> src/parser/bufread.rs:78:5
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 78 |     pub fn peek(&self) -> Option<&char> {
Dec 17 10:42:15.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: struct is never constructed: `Parser`
Dec 17 10:42:15.689 INFO [stderr]   --> src/parser/mod.rs:10:1
Dec 17 10:42:15.689 INFO [stderr]    |
Dec 17 10:42:15.689 INFO [stderr] 10 | pub struct Parser<R> {
Dec 17 10:42:15.689 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.689 INFO [stderr] 
Dec 17 10:42:15.689 INFO [stderr] warning: unused `#[macro_use]` import
Dec 17 10:42:15.689 INFO [stderr]  --> src/main.rs:2:1
Dec 17 10:42:15.689 INFO [stderr]   |
Dec 17 10:42:15.696 INFO [stderr] 2 | #[macro_use]
Dec 17 10:42:15.696 INFO [stderr]   | ^^^^^^^^^^^^
Dec 17 10:42:15.696 INFO [stderr]   |
Dec 17 10:42:15.696 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 10:42:15.696 INFO [stderr] 
Dec 17 10:42:15.696 INFO [stderr] warning: unused imports: `Backtrace`, `Context`, `Fail`, `ResultExt`
Dec 17 10:42:15.696 INFO [stderr]  --> src/parser/mod.rs:1:15
Dec 17 10:42:15.696 INFO [stderr]   |
Dec 17 10:42:15.696 INFO [stderr] 1 | use failure::{Backtrace, Context, Fail, ResultExt};
Dec 17 10:42:15.696 INFO [stderr]   |               ^^^^^^^^^  ^^^^^^^  ^^^^  ^^^^^^^^^
Dec 17 10:42:15.696 INFO [stderr] 
Dec 17 10:42:15.696 INFO [stderr] warning: unused imports: `ErrorKind`, `Error`
Dec 17 10:42:15.696 INFO [stderr]  --> src/parser/mod.rs:3:14
Dec 17 10:42:15.696 INFO [stderr]   |
Dec 17 10:42:15.696 INFO [stderr] 3 | use errors::{Error, ErrorKind};
Dec 17 10:42:15.696 INFO [stderr]   |              ^^^^^  ^^^^^^^^^
Dec 17 10:42:15.696 INFO [stderr] 
Dec 17 10:42:15.696 INFO [stderr] warning: unused imports: `Backtrace`, `Context`, `Fail`
Dec 17 10:42:15.696 INFO [stderr]  --> src/parser/bufread.rs:3:15
Dec 17 10:42:15.696 INFO [stderr]   |
Dec 17 10:42:15.696 INFO [stderr] 3 | use failure::{Backtrace, Context, Fail, ResultExt};
Dec 17 10:42:15.696 INFO [stderr]   |               ^^^^^^^^^  ^^^^^^^  ^^^^
Dec 17 10:42:15.696 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: method is never used: `kind`
Dec 17 10:42:15.837 INFO [stderr]   --> src/errors.rs:12:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 12 |     pub fn kind(&self) -> ErrorKind {
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: variant is never constructed: `EndOfInput`
Dec 17 10:42:15.837 INFO [stderr]   --> src/errors.rs:50:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 50 |     EndOfInput,
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: variant is never constructed: `UnclosedVerbatim`
Dec 17 10:42:15.837 INFO [stderr]   --> src/errors.rs:52:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 52 |     UnclosedVerbatim(usize, usize),
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: variant is never constructed: `Unicode`
Dec 17 10:42:15.837 INFO [stderr]   --> src/errors.rs:54:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 54 |     Unicode(usize),
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: variant is never constructed: `Io`
Dec 17 10:42:15.837 INFO [stderr]   --> src/errors.rs:56:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 56 |     Io(usize),
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: method is never used: `from_io`
Dec 17 10:42:15.837 INFO [stderr]   --> src/errors.rs:60:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 60 |     pub fn from_io(err: &io::Error, line: usize) -> ErrorKind {
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: struct is never constructed: `BufReadIter`
Dec 17 10:42:15.837 INFO [stderr]   --> src/parser/bufread.rs:12:1
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 12 | pub struct BufReadIter<R> {
Dec 17 10:42:15.837 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: method is never used: `new`
Dec 17 10:42:15.837 INFO [stderr]   --> src/parser/bufread.rs:22:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 22 |     pub fn new(input: R) -> BufReadIter<R> {
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: method is never used: `column`
Dec 17 10:42:15.837 INFO [stderr]   --> src/parser/bufread.rs:33:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 33 |     pub fn column(&self) -> usize {
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: method is never used: `line`
Dec 17 10:42:15.837 INFO [stderr]   --> src/parser/bufread.rs:38:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 38 |     pub fn line(&self) -> usize {
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: method is never used: `fill_buffer`
Dec 17 10:42:15.837 INFO [stderr]   --> src/parser/bufread.rs:43:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 43 |     fn fill_buffer(&mut self) -> Result<(), Error> {
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: method is never used: `next`
Dec 17 10:42:15.837 INFO [stderr]   --> src/parser/bufread.rs:55:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 55 |     pub fn next(&mut self) -> Result<Option<char>, Error> {
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: method is never used: `expect_next`
Dec 17 10:42:15.837 INFO [stderr]   --> src/parser/bufread.rs:66:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 66 |     pub fn expect_next(&mut self) -> Result<char, Error> {
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: method is never used: `current`
Dec 17 10:42:15.837 INFO [stderr]   --> src/parser/bufread.rs:72:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 72 |     pub fn current(&self) -> Option<&char> {
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.837 INFO [stderr] warning: method is never used: `peek`
Dec 17 10:42:15.837 INFO [stderr]   --> src/parser/bufread.rs:78:5
Dec 17 10:42:15.837 INFO [stderr]    |
Dec 17 10:42:15.837 INFO [stderr] 78 |     pub fn peek(&self) -> Option<&char> {
Dec 17 10:42:15.837 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.837 INFO [stderr] 
Dec 17 10:42:15.838 INFO [stderr] warning: struct is never constructed: `Parser`
Dec 17 10:42:15.838 INFO [stderr]   --> src/parser/mod.rs:10:1
Dec 17 10:42:15.838 INFO [stderr]    |
Dec 17 10:42:15.838 INFO [stderr] 10 | pub struct Parser<R> {
Dec 17 10:42:15.838 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^
Dec 17 10:42:15.838 INFO [stderr] 
Dec 17 10:42:15.873 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.38s
Dec 17 10:42:16.704 INFO running `"docker" "inspect" "a7ca0aa89fbcae0f811ac103499df5807a3582e050d7f3e4948da8dcb570d611"`
Dec 17 10:42:16.870 INFO running `"docker" "rm" "-f" "a7ca0aa89fbcae0f811ac103499df5807a3582e050d7f3e4948da8dcb570d611"`
Dec 17 10:42:17.140 INFO [stdout] a7ca0aa89fbcae0f811ac103499df5807a3582e050d7f3e4948da8dcb570d611