[INFO] fetching crate xxd-rs 0.2.4...
[INFO] checking xxd-rs-0.2.4 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate xxd-rs 0.2.4 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate xxd-rs 0.2.4 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate xxd-rs 0.2.4
[INFO] finished tweaking crates.io crate xxd-rs 0.2.4
[INFO] tweaked toml for crates.io crate xxd-rs 0.2.4 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] 4ce8031985007e9e25f02831e2badc33765be308313390b53626fecadd22546e
[INFO] running `"docker" "start" "-a" "4ce8031985007e9e25f02831e2badc33765be308313390b53626fecadd22546e"`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking term-painter v0.2.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking error-chain v0.9.0
[INFO] [stderr]    Compiling xxd-rs v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `error_chain::*`
[INFO] [stderr]  --> src/xxd/lib.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use error_chain::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::result`
[INFO] [stderr]  --> src/xxd/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::result;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Error`
[INFO] [stderr]  --> src/xxd/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::fmt::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Display`
[INFO] [stderr]  --> src/xxd/dump.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::Display;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Error`
[INFO] [stderr]  --> src/xxd/dump.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fmt::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert::Into`
[INFO] [stderr]  --> src/xxd/dump.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::convert::Into;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `stderr`
[INFO] [stderr]  --> src/xxd/dump.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::{Read, Write, stderr};
[INFO] [stderr]   |               ^^^^         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/xxd/dump.rs:170:33
[INFO] [stderr]     |
[INFO] [stderr] 170 |                 character @ 20u8...126u8 => write!(f, "{}", character as char)?,
[INFO] [stderr]     |                                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/xxd/dump.rs:207:38
[INFO] [stderr]     |
[INFO] [stderr] 207 |                         writer: &mut Write,
[INFO] [stderr]     |                                      ^^^^^ help: use `dyn`: `dyn Write`
[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/xxd/dump.rs:234:40
[INFO] [stderr]     |
[INFO] [stderr] 234 | fn dump_line(data: &[u8], writer: &mut Write, output_settings: OutputSettings) {
[INFO] [stderr]     |                                        ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/xxd/dump.rs:242:9
[INFO] [stderr]     |
[INFO] [stderr] 242 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Write`
[INFO] [stderr]    --> src/xxd/dump.rs:243:9
[INFO] [stderr]     |
[INFO] [stderr] 243 |     use std::fmt::Write;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::errors::*`
[INFO] [stderr]  --> src/xxd/generate.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::errors::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/xxd/generate.rs:141:9
[INFO] [stderr]     |
[INFO] [stderr] 141 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ErrorKind`, `IResult`, `be_u16`, `be_u8`, `is_digit`
[INFO] [stderr]  --> src/xxd/convert.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nom::{IResult, is_digit, be_u8, be_u16, ErrorKind};
[INFO] [stderr]   |           ^^^^^^^  ^^^^^^^^  ^^^^^  ^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/xxd/convert.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Write`
[INFO] [stderr]   --> src/xxd/convert.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     use std::fmt::Write;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `errors::*`
[INFO] [stderr]   --> src/xxd/lib.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | use errors::*;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/xxd/lib.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     error_chain!{
[INFO] [stderr] 17 | |         foreign_links {
[INFO] [stderr] 18 | |             FormatError(::std::fmt::Error);
[INFO] [stderr] 19 | |             Io(::std::io::Error);
[INFO] [stderr] 20 | |         }
[INFO] [stderr] 21 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/xxd/lib.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     error_chain!{
[INFO] [stderr] 17 | |         foreign_links {
[INFO] [stderr] 18 | |             FormatError(::std::fmt::Error);
[INFO] [stderr] 19 | |             Io(::std::io::Error);
[INFO] [stderr] 20 | |         }
[INFO] [stderr] 21 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `error_chain::*`
[INFO] [stderr]  --> src/xxd/lib.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use error_chain::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::result`
[INFO] [stderr]  --> src/xxd/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::result;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Error`
[INFO] [stderr]  --> src/xxd/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::fmt::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Display`
[INFO] [stderr]  --> src/xxd/dump.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::Display;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Error`
[INFO] [stderr]  --> src/xxd/dump.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fmt::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert::Into`
[INFO] [stderr]  --> src/xxd/dump.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::convert::Into;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `stderr`
[INFO] [stderr]  --> src/xxd/dump.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::{Read, Write, stderr};
[INFO] [stderr]   |               ^^^^         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/xxd/dump.rs:170:33
[INFO] [stderr]     |
[INFO] [stderr] 170 |                 character @ 20u8...126u8 => write!(f, "{}", character as char)?,
[INFO] [stderr]     |                                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/xxd/dump.rs:207:38
[INFO] [stderr]     |
[INFO] [stderr] 207 |                         writer: &mut Write,
[INFO] [stderr]     |                                      ^^^^^ help: use `dyn`: `dyn Write`
[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/xxd/dump.rs:234:40
[INFO] [stderr]     |
[INFO] [stderr] 234 | fn dump_line(data: &[u8], writer: &mut Write, output_settings: OutputSettings) {
[INFO] [stderr]     |                                        ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::errors::*`
[INFO] [stderr]  --> src/xxd/generate.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::errors::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ErrorKind`, `be_u16`, `be_u8`, `is_digit`
[INFO] [stderr]  --> src/xxd/convert.rs:1:20
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nom::{IResult, is_digit, be_u8, be_u16, ErrorKind};
[INFO] [stderr]   |                    ^^^^^^^^  ^^^^^  ^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Write`
[INFO] [stderr]   --> src/xxd/convert.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     use std::fmt::Write;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `errors::*`
[INFO] [stderr]   --> src/xxd/lib.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | use errors::*;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/xxd/lib.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     error_chain!{
[INFO] [stderr] 17 | |         foreign_links {
[INFO] [stderr] 18 | |             FormatError(::std::fmt::Error);
[INFO] [stderr] 19 | |             Io(::std::io::Error);
[INFO] [stderr] 20 | |         }
[INFO] [stderr] 21 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/xxd/lib.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     error_chain!{
[INFO] [stderr] 17 | |         foreign_links {
[INFO] [stderr] 18 | |             FormatError(::std::fmt::Error);
[INFO] [stderr] 19 | |             Io(::std::io::Error);
[INFO] [stderr] 20 | |         }
[INFO] [stderr] 21 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/xxd/lib.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     error_chain!{
[INFO] [stderr] 17 | |         foreign_links {
[INFO] [stderr] 18 | |             FormatError(::std::fmt::Error);
[INFO] [stderr] 19 | |             Io(::std::io::Error);
[INFO] [stderr] 20 | |         }
[INFO] [stderr] 21 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `address` is never read
[INFO] [stderr]    --> src/xxd/dump.rs:228:9
[INFO] [stderr]     |
[INFO] [stderr] 228 |         address += data.len();
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/xxd/dump.rs:190:58
[INFO] [stderr]     |
[INFO] [stderr] 190 |         let bytes_written = self.write_bytes(f).map_err(|e| ::std::fmt::Error)?;
[INFO] [stderr]     |                                                          ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/xxd/dump.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 195 |         for i in 0..padding {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TestFixture`
[INFO] [stderr]    --> src/xxd/dump.rs:245:12
[INFO] [stderr]     |
[INFO] [stderr] 245 |     struct TestFixture {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/xxd/dump.rs:251:9
[INFO] [stderr]     |
[INFO] [stderr] 251 |         fn new() -> Self {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `data`
[INFO] [stderr]    --> src/xxd/dump.rs:258:9
[INFO] [stderr]     |
[INFO] [stderr] 258 |         fn data(&self) -> &[u8] {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `small_data`
[INFO] [stderr]    --> src/xxd/dump.rs:262:9
[INFO] [stderr]     |
[INFO] [stderr] 262 |         fn small_data(&self) -> &[u8] {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/xxd/dump.rs:188:13
[INFO] [stderr]     |
[INFO] [stderr] 188 |             self.write_address(f);
[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/xxd/dump.rs:199:13
[INFO] [stderr]     |
[INFO] [stderr] 199 |             self.write_interpretation(f);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/xxd/dump.rs:236:5
[INFO] [stderr]     |
[INFO] [stderr] 236 |     writer.write_fmt(format_args!("{}\n", output_line));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/xxd/lib.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | /     error_chain!{
[INFO] [stderr] 17 | |         foreign_links {
[INFO] [stderr] 18 | |             FormatError(::std::fmt::Error);
[INFO] [stderr] 19 | |             Io(::std::io::Error);
[INFO] [stderr] 20 | |         }
[INFO] [stderr] 21 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 31 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `address` is never read
[INFO] [stderr]    --> src/xxd/dump.rs:228:9
[INFO] [stderr]     |
[INFO] [stderr] 228 |         address += data.len();
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/xxd/dump.rs:190:58
[INFO] [stderr]     |
[INFO] [stderr] 190 |         let bytes_written = self.write_bytes(f).map_err(|e| ::std::fmt::Error)?;
[INFO] [stderr]     |                                                          ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/xxd/dump.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 195 |         for i in 0..padding {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output_settings`
[INFO] [stderr]    --> src/xxd/dump.rs:269:13
[INFO] [stderr]     |
[INFO] [stderr] 269 |         let output_settings = OutputSettings::new();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_settings`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output_line`
[INFO] [stderr]    --> src/xxd/dump.rs:343:13
[INFO] [stderr]     |
[INFO] [stderr] 343 |         let output_line = OutputLine::new(fixture.data());
[INFO] [stderr]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_line`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/xxd/dump.rs:281:13
[INFO] [stderr]     |
[INFO] [stderr] 281 |         let mut output_settings = OutputSettings::new()
[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/xxd/dump.rs:300:17
[INFO] [stderr]     |
[INFO] [stderr] 300 |             let mut output_settings = OutputSettings::new().columns(columns).group_size(group_size);
[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/xxd/dump.rs:306:17
[INFO] [stderr]     |
[INFO] [stderr] 306 |             let mut output_settings = OutputSettings::new().columns(columns).group_size(group_size);
[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/xxd/dump.rs:312:17
[INFO] [stderr]     |
[INFO] [stderr] 312 |             let mut output_settings = OutputSettings::new().columns(columns).group_size(group_size);
[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/xxd/dump.rs:188:13
[INFO] [stderr]     |
[INFO] [stderr] 188 |             self.write_address(f);
[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/xxd/dump.rs:199:13
[INFO] [stderr]     |
[INFO] [stderr] 199 |             self.write_interpretation(f);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/xxd/dump.rs:236:5
[INFO] [stderr]     |
[INFO] [stderr] 236 |     writer.write_fmt(format_args!("{}\n", output_line));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/xxd/dump.rs:442:9
[INFO] [stderr]     |
[INFO] [stderr] 442 |         super::dump_iterator(small_data, &mut buffer, output_settings);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Language`
[INFO] [stderr]  --> src/bin/main.rs:9:21
[INFO] [stderr]   |
[INFO] [stderr] 9 | use xxd::generate::{Language, Render, Template};
[INFO] [stderr]   |                     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stderr`
[INFO] [stderr]   --> src/bin/main.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::io::{stderr, Read, Write};
[INFO] [stderr]    |               ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/bin/main.rs:49:50
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub fn create_reader(path: String) -> Result<Box<std::io::Read>> {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Read`
[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/bin/main.rs:59:50
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn create_writer(path: String) -> Result<Box<std::io::Write>> {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/bin/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     error_chain! {
[INFO] [stderr] 20 | |         foreign_links {
[INFO] [stderr] 21 | |             ParseError(::std::num::ParseIntError);
[INFO] [stderr] 22 | |             Xxd(::xxd::errors::Error);
[INFO] [stderr] 23 | |             Io(::std::io::Error);
[INFO] [stderr] 24 | |         }
[INFO] [stderr] 25 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/bin/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     error_chain! {
[INFO] [stderr] 20 | |         foreign_links {
[INFO] [stderr] 21 | |             ParseError(::std::num::ParseIntError);
[INFO] [stderr] 22 | |             Xxd(::xxd::errors::Error);
[INFO] [stderr] 23 | |             Io(::std::io::Error);
[INFO] [stderr] 24 | |         }
[INFO] [stderr] 25 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Language`
[INFO] [stderr]  --> src/bin/main.rs:9:21
[INFO] [stderr]   |
[INFO] [stderr] 9 | use xxd::generate::{Language, Render, Template};
[INFO] [stderr]   |                     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stderr`
[INFO] [stderr]   --> src/bin/main.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::io::{stderr, Read, Write};
[INFO] [stderr]    |               ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/bin/main.rs:49:50
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub fn create_reader(path: String) -> Result<Box<std::io::Read>> {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Read`
[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/bin/main.rs:59:50
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn create_writer(path: String) -> Result<Box<std::io::Write>> {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/bin/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     error_chain! {
[INFO] [stderr] 20 | |         foreign_links {
[INFO] [stderr] 21 | |             ParseError(::std::num::ParseIntError);
[INFO] [stderr] 22 | |             Xxd(::xxd::errors::Error);
[INFO] [stderr] 23 | |             Io(::std::io::Error);
[INFO] [stderr] 24 | |         }
[INFO] [stderr] 25 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/bin/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     error_chain! {
[INFO] [stderr] 20 | |         foreign_links {
[INFO] [stderr] 21 | |             ParseError(::std::num::ParseIntError);
[INFO] [stderr] 22 | |             Xxd(::xxd::errors::Error);
[INFO] [stderr] 23 | |             Io(::std::io::Error);
[INFO] [stderr] 24 | |         }
[INFO] [stderr] 25 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_command_available`
[INFO] [stderr]  --> tests/integration_tests.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn is_command_available(command: String) -> bool {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/bin/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     error_chain! {
[INFO] [stderr] 20 | |         foreign_links {
[INFO] [stderr] 21 | |             ParseError(::std::num::ParseIntError);
[INFO] [stderr] 22 | |             Xxd(::xxd::errors::Error);
[INFO] [stderr] 23 | |             Io(::std::io::Error);
[INFO] [stderr] 24 | |         }
[INFO] [stderr] 25 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 30 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/bin/main.rs:115:16
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn convert<'a>(args: Option<&ArgMatches<'a>>) -> Result<()> {
[INFO] [stderr]     |                ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/main.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |             let mut file_writer = std::fs::File::create(path)?;
[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/bin/main.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let mut settings = OutputSettings::new()
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `convert`
[INFO] [stderr]    --> src/bin/main.rs:115:4
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn convert<'a>(args: Option<&ArgMatches<'a>>) -> Result<()> {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `command_not_supported`
[INFO] [stderr]    --> src/bin/main.rs:146:4
[INFO] [stderr]     |
[INFO] [stderr] 146 | fn command_not_supported() -> Result<()> {
[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/bin/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     error_chain! {
[INFO] [stderr] 20 | |         foreign_links {
[INFO] [stderr] 21 | |             ParseError(::std::num::ParseIntError);
[INFO] [stderr] 22 | |             Xxd(::xxd::errors::Error);
[INFO] [stderr] 23 | |             Io(::std::io::Error);
[INFO] [stderr] 24 | |         }
[INFO] [stderr] 25 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/main.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 | /     match length {
[INFO] [stderr] 79 | |         None => dump_iterator(
[INFO] [stderr] 80 | |             reader.bytes().skip(seek).flat_map(|result| result),
[INFO] [stderr] 81 | |             &mut *writer,
[INFO] [stderr] ...  |
[INFO] [stderr] 92 | |         ),
[INFO] [stderr] 93 | |     };
[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/bin/main.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     writer.write_fmt(format_args!("{}\n", template.render(&data)));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/bin/main.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |     std::io::stderr().write_fmt(format_args!("xxd-rs: {}\n", error));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/bin/main.rs:115:16
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn convert<'a>(args: Option<&ArgMatches<'a>>) -> Result<()> {
[INFO] [stderr]     |                ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/main.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |             let mut file_writer = std::fs::File::create(path)?;
[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/bin/main.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let mut settings = OutputSettings::new()
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `convert`
[INFO] [stderr]    --> src/bin/main.rs:115:4
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn convert<'a>(args: Option<&ArgMatches<'a>>) -> Result<()> {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `command_not_supported`
[INFO] [stderr]    --> src/bin/main.rs:146:4
[INFO] [stderr]     |
[INFO] [stderr] 146 | fn command_not_supported() -> Result<()> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/main.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 | /     match length {
[INFO] [stderr] 79 | |         None => dump_iterator(
[INFO] [stderr] 80 | |             reader.bytes().skip(seek).flat_map(|result| result),
[INFO] [stderr] 81 | |             &mut *writer,
[INFO] [stderr] ...  |
[INFO] [stderr] 92 | |         ),
[INFO] [stderr] 93 | |     };
[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/bin/main.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     writer.write_fmt(format_args!("{}\n", template.render(&data)));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[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/bin/main.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |     std::io::stderr().write_fmt(format_args!("xxd-rs: {}\n", error));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.70s
[INFO] running `"docker" "inspect" "4ce8031985007e9e25f02831e2badc33765be308313390b53626fecadd22546e"`
[INFO] running `"docker" "rm" "-f" "4ce8031985007e9e25f02831e2badc33765be308313390b53626fecadd22546e"`
[INFO] [stdout] 4ce8031985007e9e25f02831e2badc33765be308313390b53626fecadd22546e