[INFO] crate bytekey 0.4.2 is already in cache
[INFO] checking bytekey-0.4.2 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate bytekey 0.4.2 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate bytekey 0.4.2 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate bytekey 0.4.2
[INFO] finished tweaking crates.io crate bytekey 0.4.2
[INFO] tweaked toml for crates.io crate bytekey 0.4.2 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2ae8cd8656446970baeba09718c257afed605fc8e1ea47e4d3e02e441388d763
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "2ae8cd8656446970baeba09718c257afed605fc8e1ea47e4d3e02e441388d763"`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking bytekey v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]   --> src/lib.rs:58:18
[INFO] [stderr]    |
[INFO] [stderr] 58 | #![feature(core, custom_attribute, io, plugin, unicode)]
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stderr]    |
[INFO] [stderr]    = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::iter::range_inclusive`
[INFO] [stderr]  --> src/decoder.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::iter::range_inclusive;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ no `range_inclusive` in `iter`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::wrapping`
[INFO] [stderr]  --> src/decoder.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::num::wrapping::OverflowingOps;
[INFO] [stderr]   |               ^^^^^^^^ could not find `wrapping` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `CharsError` in `io`
[INFO] [stderr]    --> src/decoder.rs:120:26
[INFO] [stderr]     |
[INFO] [stderr] 120 |             Some(Err(io::CharsError::NotUtf8)) => Err(Error::NotUtf8),
[INFO] [stderr]     |                          ^^^^^^^^^^ could not find `CharsError` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `CharsError` in `io`
[INFO] [stderr]    --> src/decoder.rs:121:26
[INFO] [stderr]     |
[INFO] [stderr] 121 |             Some(Err(io::CharsError::Other(error))) => Err(Error::Io(error)),
[INFO] [stderr]     |                          ^^^^^^^^^^ could not find `CharsError` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `CharsError` in `io`
[INFO] [stderr]    --> src/lib.rs:140:17
[INFO] [stderr]     |
[INFO] [stderr] 140 |             io::CharsError::NotUtf8 => Error::NotUtf8,
[INFO] [stderr]     |                 ^^^^^^^^^^ could not find `CharsError` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `CharsError` in `io`
[INFO] [stderr]    --> src/lib.rs:141:17
[INFO] [stderr]     |
[INFO] [stderr] 141 |             io::CharsError::Other(error) => Error::Io(error),
[INFO] [stderr]     |                 ^^^^^^^^^^ could not find `CharsError` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `Error` in `byteorder`
[INFO] [stderr]    --> src/lib.rs:149:24
[INFO] [stderr]     |
[INFO] [stderr] 149 |             byteorder::Error::UnexpectedEOF => Error::UnexpectedEof,
[INFO] [stderr]     |                        ^^^^^ could not find `Error` in `byteorder`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `Error` in `byteorder`
[INFO] [stderr]    --> src/lib.rs:150:24
[INFO] [stderr]     |
[INFO] [stderr] 150 |             byteorder::Error::Io(error) => Error::Io(error),
[INFO] [stderr]     |                        ^^^^^ could not find `Error` in `byteorder`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stderr]    --> src/lib.rs:137:15
[INFO] [stderr]     |
[INFO] [stderr] 137 | impl From<io::CharsError> for Error {
[INFO] [stderr]     |               ^^^^^^^^^^ not found in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stderr]    --> src/lib.rs:138:24
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn from(error: io::CharsError) -> Error {
[INFO] [stderr]     |                        ^^^^^^^^^^ not found in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Error` in crate `byteorder`
[INFO] [stderr]    --> src/lib.rs:146:22
[INFO] [stderr]     |
[INFO] [stderr] 146 | impl From<byteorder::Error> for Error {
[INFO] [stderr]     |                      ^^^^^ not found in `byteorder`
[INFO] [stderr]     |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]     |
[INFO] [stderr] 68  | use Error;
[INFO] [stderr]     |
[INFO] [stderr] 68  | use std::error::Error;
[INFO] [stderr]     |
[INFO] [stderr] 68  | use std::fmt::Error;
[INFO] [stderr]     |
[INFO] [stderr] 68  | use std::io::Error;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Error` in crate `byteorder`
[INFO] [stderr]    --> src/lib.rs:147:31
[INFO] [stderr]     |
[INFO] [stderr] 147 |     fn from(error: byteorder::Error) -> Error {
[INFO] [stderr]     |                               ^^^^^ not found in `byteorder`
[INFO] [stderr]     |
[INFO] [stderr] help: possible candidates are found in other modules, you can import them into scope
[INFO] [stderr]     |
[INFO] [stderr] 68  | use Error;
[INFO] [stderr]     |
[INFO] [stderr] 68  | use std::error::Error;
[INFO] [stderr]     |
[INFO] [stderr] 68  | use std::fmt::Error;
[INFO] [stderr]     |
[INFO] [stderr] 68  | use std::io::Error;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:168:13
[INFO] [stderr]     |
[INFO] [stderr] 168 |             try!(self.writer.write_u8(((val >> 16) as u8) | 2 << 4));
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:173:13
[INFO] [stderr]     |
[INFO] [stderr] 173 |             try!(self.writer.write_u8(((val >> 32) as u8) | 4 << 4));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:176:13
[INFO] [stderr]     |
[INFO] [stderr] 176 |             try!(self.writer.write_u16::<BigEndian>(((val >> 32) as u16) | 5 << 12));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:179:13
[INFO] [stderr]     |
[INFO] [stderr] 179 |             try!(self.writer.write_u8(((val >> 48) as u8) | 6 << 4));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:180:13
[INFO] [stderr]     |
[INFO] [stderr] 180 |             try!(self.writer.write_u16::<BigEndian>((val >> 32) as u16));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:185:13
[INFO] [stderr]     |
[INFO] [stderr] 185 |             try!(self.writer.write_u8(8 << 4));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:270:13
[INFO] [stderr]     |
[INFO] [stderr] 270 |             try!(self.writer.write_u8((masked >> 16) as u8));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:277:13
[INFO] [stderr]     |
[INFO] [stderr] 277 |             try!(self.writer.write_u8((masked >> 32) as u8));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:281:13
[INFO] [stderr]     |
[INFO] [stderr] 281 |             try!(self.writer.write_u16::<BigEndian>((masked >> 32) as u16));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:285:13
[INFO] [stderr]     |
[INFO] [stderr] 285 |             try!(self.writer.write_u8((masked >> 48) as u8));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:286:13
[INFO] [stderr]     |
[INFO] [stderr] 286 |             try!(self.writer.write_u16::<BigEndian>((masked >> 32) as u16));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:292:13
[INFO] [stderr]     |
[INFO] [stderr] 292 |             try!(self.writer.write_u8((0x18 << 3) ^ mask as u8));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:369:9
[INFO] [stderr]     |
[INFO] [stderr] 369 |         try!(self.writer.write_all(v.as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:383:9
[INFO] [stderr]     |
[INFO] [stderr] 383 |         try!(self.emit_usize(id));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:398:9
[INFO] [stderr]     |
[INFO] [stderr] 398 |         try!(self.emit_usize(id));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/encoder.rs:451:9
[INFO] [stderr]     |
[INFO] [stderr] 451 |         try!(self.emit_bool(true));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:27:22
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let header = try!(self.reader.read_u8());
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:31:24
[INFO] [stderr]    |
[INFO] [stderr] 31 |             let byte = try!(self.reader.read_u8());
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:38:22
[INFO] [stderr]    |
[INFO] [stderr] 38 |         let header = try!(self.reader.read_u8());
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:43:24
[INFO] [stderr]    |
[INFO] [stderr] 43 |             let byte = try!(self.reader.read_u8());
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:72:19
[INFO] [stderr]    |
[INFO] [stderr] 72 |         let val = try!(self.read_var_u64());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:77:19
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let val = try!(self.reader.read_i8());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |         let val = try!(self.reader.read_i16::<BigEndian>());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:85:19
[INFO] [stderr]    |
[INFO] [stderr] 85 |         let val = try!(self.reader.read_i32::<BigEndian>());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:89:19
[INFO] [stderr]    |
[INFO] [stderr] 89 |         let val = try!(self.reader.read_i64::<BigEndian>());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:93:19
[INFO] [stderr]    |
[INFO] [stderr] 93 |         let val = try!(self.read_var_i64());
[INFO] [stderr]    |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder.rs:98:15
[INFO] [stderr]    |
[INFO] [stderr] 98 |         match try!(self.reader.read_u8()) {
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder.rs:105:19
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let val = try!(self.reader.read_i32::<BigEndian>());
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder.rs:111:19
[INFO] [stderr]     |
[INFO] [stderr] 111 |         let val = try!(self.reader.read_i64::<BigEndian>());
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder.rs:130:21
[INFO] [stderr]     |
[INFO] [stderr] 130 |             let c = try!(self.read_char());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder.rs:144:18
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let id = try!(self.read_usize());
[INFO] [stderr]     |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder.rs:193:23
[INFO] [stderr]     |
[INFO] [stderr] 193 |         let is_some = try!(self.read_bool());
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |         try!(value.encode(&mut encoder));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/encoder.rs:169:48
[INFO] [stderr]     |
[INFO] [stderr] 169 |             self.writer.write_u16::<BigEndian>((val as u16))
[INFO] [stderr]     |                                                ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/encoder.rs:174:48
[INFO] [stderr]     |
[INFO] [stderr] 174 |             self.writer.write_u32::<BigEndian>((val as u32))
[INFO] [stderr]     |                                                ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/encoder.rs:177:48
[INFO] [stderr]     |
[INFO] [stderr] 177 |             self.writer.write_u32::<BigEndian>((val as u32))
[INFO] [stderr]     |                                                ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/encoder.rs:181:48
[INFO] [stderr]     |
[INFO] [stderr] 181 |             self.writer.write_u32::<BigEndian>((val as u32))
[INFO] [stderr]     |                                                ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/decoder.rs:2:21
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{self, Read};
[INFO] [stderr]   |                     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:174:32
[INFO] [stderr]     |
[INFO] [stderr] 174 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:170:39
[INFO] [stderr]     |
[INFO] [stderr] 170 |             Error::Io(ref err) => err.description(),
[INFO] [stderr]     |                                       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/lib.rs:178:39
[INFO] [stderr]     |
[INFO] [stderr] 178 |             Error::Io(ref err) => err.cause(),
[INFO] [stderr]     |                                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `unwrap_or` found for mutable reference `&mut str` in the current scope
[INFO] [stderr]    --> src/encoder.rs:364:41
[INFO] [stderr]     |
[INFO] [stderr] 364 |         let n = v.encode_utf8(&mut buf).unwrap_or(0);
[INFO] [stderr]     |                                         ^^^^^^^^^ method not found in `&mut str`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `chars` found for mutable reference `&mut std::io::BufReader<R>` in the current scope
[INFO] [stderr]    --> src/decoder.rs:118:34
[INFO] [stderr]     |
[INFO] [stderr] 118 |         match (&mut self.reader).chars().next() {
[INFO] [stderr]     |                                  ^^^^^ method not found in `&mut std::io::BufReader<R>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]   --> src/lib.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 | use std::error::Error as StdError;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 15 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0432, E0433, E0557, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: could not compile `bytekey`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2ae8cd8656446970baeba09718c257afed605fc8e1ea47e4d3e02e441388d763"`
[INFO] running `"docker" "rm" "-f" "2ae8cd8656446970baeba09718c257afed605fc8e1ea47e4d3e02e441388d763"`
[INFO] [stdout] 2ae8cd8656446970baeba09718c257afed605fc8e1ea47e4d3e02e441388d763
