[INFO] cloning repository https://github.com/22116/debian_bridge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/22116/debian_bridge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F22116%2Fdebian_bridge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F22116%2Fdebian_bridge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2421219bd72cd1bd9f23cf9b1b3fe25367473bcd
[INFO] testing 22116/debian_bridge against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F22116%2Fdebian_bridge" "/workspace/builds/worker-66/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-66/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/22116/debian_bridge on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/22116/debian_bridge
[INFO] finished tweaking git repo https://github.com/22116/debian_bridge
[INFO] tweaked toml for git repo https://github.com/22116/debian_bridge written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] crate git repo https://github.com/22116/debian_bridge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f2e7f6488ddde6a8478fc2b2e53569d4f92d32bbe4960ad46e887b5fd42487d
[INFO] running `Command { std: "docker" "start" "-a" "9f2e7f6488ddde6a8478fc2b2e53569d4f92d32bbe4960ad46e887b5fd42487d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f2e7f6488ddde6a8478fc2b2e53569d4f92d32bbe4960ad46e887b5fd42487d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f2e7f6488ddde6a8478fc2b2e53569d4f92d32bbe4960ad46e887b5fd42487d", kill_on_drop: false }`
[INFO] [stdout] 9f2e7f6488ddde6a8478fc2b2e53569d4f92d32bbe4960ad46e887b5fd42487d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e42b34dcc764a10c9bc510cf2bed85e44c73c80c8ae4b84a997e5d6ebebe4e08
[INFO] running `Command { std: "docker" "start" "-a" "e42b34dcc764a10c9bc510cf2bed85e44c73c80c8ae4b84a997e5d6ebebe4e08", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling httparse v1.4.0
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling xdg v2.2.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling hyper-openssl v0.7.1
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling colorful v0.2.1
[INFO] [stderr]    Compiling pipers v1.0.1
[INFO] [stderr]    Compiling dockerfile v0.2.1
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling linked_hash_set v0.1.4
[INFO] [stderr]    Compiling unicode-bidi v0.3.5
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling tinyvec v1.2.0
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling openssl-sys v0.9.63
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]    Compiling unicode-normalization v0.1.17
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling tar v0.4.33
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling debian_bridge_core v0.2.2 (/opt/rustwide/workdir/debian_bridge_core)
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> debian_bridge_core/build.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error::Error`, `path::Path`
[INFO] [stdout]  --> debian_bridge_core/build.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{error::Error, path::Path};
[INFO] [stdout]   |           ^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> debian_bridge_core/build.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut path = dirs::home_dir().unwrap();
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> debian_bridge_core/build.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut path = default_icon_path(path.as_path());
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> debian_bridge_core/build.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             std::fs::create_dir(&path);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling tokio-buf v0.1.1
[INFO] [stderr]    Compiling string v0.2.1
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling http-body v0.1.0
[INFO] [stderr]    Compiling tokio-openssl v0.3.0
[INFO] [stderr]    Compiling debian_bridge_cli v0.2.2 (/opt/rustwide/workdir/debian_bridge_cli)
[INFO] [stdout] warning: unused import: `path::Path`
[INFO] [stdout]  --> debian_bridge_cli/build.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{error::Error, path::Path};
[INFO] [stdout]   |                         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_cli/build.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Err(err) = result {
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling markup-proc-macro v0.3.1
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling markup v0.3.1
[INFO] [stderr]    Compiling freedesktop-desktop-entry v0.1.1
[INFO] [stderr]    Compiling hyperlocal v0.6.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling shiplift v0.5.0
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> debian_bridge_core/src/app/config.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `convert::TryInto`
[INFO] [stdout]  --> debian_bridge_core/src/app/deb.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{convert::TryInto, ffi::OsStr, path::Path};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> debian_bridge_core/src/app/docker.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> debian_bridge_core/src/app/docker.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |     sync::{Arc, Mutex},
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Feature`
[INFO] [stdout]  --> debian_bridge_core/src/app/util.rs:6:35
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{app::error::AppError, Feature};
[INFO] [stdout]   |                                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::to_string`
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use serde_json::to_string;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `net::IpAddr`
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     net::IpAddr,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExitStatus`, `error::Error`, `ffi::OsString`, `fs::File`
[INFO] [stdout]   --> debian_bridge_core/src/sys/mod.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  |     error::Error,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 10 |     ffi::OsString,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 11 |     fmt::{Display, Formatter},
[INFO] [stdout] 12 |     fs::File,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 13 |     process::{Command, ExitStatus, Stdio},
[INFO] [stdout]    |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `colorful::core::StrMarker`
[INFO] [stdout]  --> debian_bridge_core/src/app/docker.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use colorful::core::StrMarker;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     error::Error,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]    --> debian_bridge_core/src/app/config.rs:153:18
[INFO] [stdout]     |
[INFO] [stdout] 153 |             Some(elem) => {
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/app/docker.rs:67:43
[INFO] [stdout]    |
[INFO] [stdout] 67 |         rt.shutdown_now().wait().map_err(|err| AppError::Docker)?;
[INFO] [stdout]    |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/app/docker.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |             Err(err) => Err(AppError::Docker),
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/app/docker.rs:85:43
[INFO] [stdout]    |
[INFO] [stdout] 85 |         rt.shutdown_now().wait().map_err(|err| AppError::Docker)?;
[INFO] [stdout]    |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> debian_bridge_core/src/app/docker.rs:105:43
[INFO] [stdout]     |
[INFO] [stdout] 105 |         rt.shutdown_now().wait().map_err(|err| AppError::Docker)?;
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> debian_bridge_core/src/app/docker.rs:145:43
[INFO] [stdout]     |
[INFO] [stdout] 145 |         rt.shutdown_now().wait().map_err(|err| AppError::Docker)?;
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> debian_bridge_core/src/app/docker.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             .map_err(|err| AppError::Docker)?;
[INFO] [stdout]     |                       ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/app/util.rs:27:23
[INFO] [stdout]    |
[INFO] [stdout] 27 |             .map_err(|err| {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/sys/mod.rs:46:23
[INFO] [stdout]    |
[INFO] [stdout] 46 |             .map_err(|err| SystemError::DockerConnection)?;
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/sys/mod.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |             Err(err) => Err(SystemError::DockerConnection),
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]   --> debian_bridge_core/src/sys/mod.rs:74:19
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .map(|o| SoundDriver::PulseAudio)
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]   --> debian_bridge_core/src/sys/mod.rs:75:32
[INFO] [stdout]    |
[INFO] [stdout] 75 |             .or(alsa.ok().map(|o| SoundDriver::Alsa))
[INFO] [stdout]    |                                ^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> debian_bridge_core/src/app/mod.rs:189:13
[INFO] [stdout]     |
[INFO] [stdout] 189 |         let mut dockerfile = util::gen_dockerfile(&deb, &program)?;
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `system`
[INFO] [stdout]   --> debian_bridge_core/src/app/docker.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     system: &'a System,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `prefix`
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     prefix: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         writeln!(f, "\n");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 | /             writeln!(
[INFO] [stdout] 63 | |                 f,
[INFO] [stdout] 64 | |                 "\t{:<15} ===> {}",
[INFO] [stdout] 65 | |                 format!("{}", feature),
[INFO] [stdout] ...  |
[INFO] [stdout] 69 | |                 }
[INFO] [stdout] 70 | |             );
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> debian_bridge_core/src/app/config.rs:121:21
[INFO] [stdout]     |
[INFO] [stdout] 121 |                     config.serialize(path);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ArgMatches`
[INFO] [stdout]  --> debian_bridge_cli/src/starter.rs:2:30
[INFO] [stdout]   |
[INFO] [stdout] 2 | use clap::{App, AppSettings, ArgMatches};
[INFO] [stdout]   |                              ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Program`
[INFO] [stdout]  --> debian_bridge_cli/src/starter.rs:3:73
[INFO] [stdout]   |
[INFO] [stdout] 3 | use debian_bridge_core::{App as Wrapper, Config, Docker, Feature, Icon, Program, System};
[INFO] [stdout]   |                                                                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `net::IpAddr`, `str::FromStr`
[INFO] [stdout]  --> debian_bridge_cli/src/starter.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     net::IpAddr,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 7 |     path::{Path, PathBuf},
[INFO] [stdout] 8 |     str::FromStr,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling debian_bridge v1.0.0 (/opt/rustwide/workdir/debian_bridge)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.85s
[INFO] running `Command { std: "docker" "inspect" "e42b34dcc764a10c9bc510cf2bed85e44c73c80c8ae4b84a997e5d6ebebe4e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e42b34dcc764a10c9bc510cf2bed85e44c73c80c8ae4b84a997e5d6ebebe4e08", kill_on_drop: false }`
[INFO] [stdout] e42b34dcc764a10c9bc510cf2bed85e44c73c80c8ae4b84a997e5d6ebebe4e08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 452e8b809ac9fb9ef77aad9dd0c1ef7b4b449088b298d008f7b5c51be016ad59
[INFO] running `Command { std: "docker" "start" "-a" "452e8b809ac9fb9ef77aad9dd0c1ef7b4b449088b298d008f7b5c51be016ad59", kill_on_drop: false }`
[INFO] [stderr]    Compiling mocktopus_macros v0.7.11
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> debian_bridge_core/build.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error::Error`, `path::Path`
[INFO] [stdout]  --> debian_bridge_core/build.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{error::Error, path::Path};
[INFO] [stdout]   |           ^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> debian_bridge_core/build.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let mut path = dirs::home_dir().unwrap();
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> debian_bridge_core/build.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut path = default_icon_path(path.as_path());
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> debian_bridge_core/build.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             std::fs::create_dir(&path);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `path::Path`
[INFO] [stdout]  --> debian_bridge_cli/build.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{error::Error, path::Path};
[INFO] [stdout]   |                         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_cli/build.rs:31:16
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if let Err(err) = result {
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> debian_bridge_core/src/app/config.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `convert::TryInto`
[INFO] [stdout]  --> debian_bridge_core/src/app/deb.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{convert::TryInto, ffi::OsStr, path::Path};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Value`
[INFO] [stdout]  --> debian_bridge_core/src/app/docker.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_json::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> debian_bridge_core/src/app/docker.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |     sync::{Arc, Mutex},
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling debian_bridge v1.0.0 (/opt/rustwide/workdir/debian_bridge)
[INFO] [stdout] warning: unused import: `Feature`
[INFO] [stdout]  --> debian_bridge_core/src/app/util.rs:6:35
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{app::error::AppError, Feature};
[INFO] [stdout]   |                                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::to_string`
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use serde_json::to_string;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `net::IpAddr`
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     net::IpAddr,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExitStatus`, `error::Error`, `ffi::OsString`, `fs::File`
[INFO] [stdout]   --> debian_bridge_core/src/sys/mod.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  |     error::Error,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 10 |     ffi::OsString,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 11 |     fmt::{Display, Formatter},
[INFO] [stdout] 12 |     fs::File,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 13 |     process::{Command, ExitStatus, Stdio},
[INFO] [stdout]    |                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `colorful::core::StrMarker`
[INFO] [stdout]  --> debian_bridge_core/src/app/docker.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use colorful::core::StrMarker;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     error::Error,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]    --> debian_bridge_core/src/app/config.rs:153:18
[INFO] [stdout]     |
[INFO] [stdout] 153 |             Some(elem) => {
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/app/docker.rs:67:43
[INFO] [stdout]    |
[INFO] [stdout] 67 |         rt.shutdown_now().wait().map_err(|err| AppError::Docker)?;
[INFO] [stdout]    |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/app/docker.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |             Err(err) => Err(AppError::Docker),
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/app/docker.rs:85:43
[INFO] [stdout]    |
[INFO] [stdout] 85 |         rt.shutdown_now().wait().map_err(|err| AppError::Docker)?;
[INFO] [stdout]    |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> debian_bridge_core/src/app/docker.rs:105:43
[INFO] [stdout]     |
[INFO] [stdout] 105 |         rt.shutdown_now().wait().map_err(|err| AppError::Docker)?;
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> debian_bridge_core/src/app/docker.rs:145:43
[INFO] [stdout]     |
[INFO] [stdout] 145 |         rt.shutdown_now().wait().map_err(|err| AppError::Docker)?;
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> debian_bridge_core/src/app/docker.rs:205:23
[INFO] [stdout]     |
[INFO] [stdout] 205 |             .map_err(|err| AppError::Docker)?;
[INFO] [stdout]     |                       ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/app/util.rs:27:23
[INFO] [stdout]    |
[INFO] [stdout] 27 |             .map_err(|err| {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/sys/mod.rs:46:23
[INFO] [stdout]    |
[INFO] [stdout] 46 |             .map_err(|err| SystemError::DockerConnection)?;
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> debian_bridge_core/src/sys/mod.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |             Err(err) => Err(SystemError::DockerConnection),
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]   --> debian_bridge_core/src/sys/mod.rs:74:19
[INFO] [stdout]    |
[INFO] [stdout] 74 |             .map(|o| SoundDriver::PulseAudio)
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]   --> debian_bridge_core/src/sys/mod.rs:75:32
[INFO] [stdout]    |
[INFO] [stdout] 75 |             .or(alsa.ok().map(|o| SoundDriver::Alsa))
[INFO] [stdout]    |                                ^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> debian_bridge_core/src/app/mod.rs:189:13
[INFO] [stdout]     |
[INFO] [stdout] 189 |         let mut dockerfile = util::gen_dockerfile(&deb, &program)?;
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `system`
[INFO] [stdout]   --> debian_bridge_core/src/app/docker.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     system: &'a System,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `prefix`
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     prefix: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         writeln!(f, "\n");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> debian_bridge_core/src/app/mod.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 | /             writeln!(
[INFO] [stdout] 63 | |                 f,
[INFO] [stdout] 64 | |                 "\t{:<15} ===> {}",
[INFO] [stdout] 65 | |                 format!("{}", feature),
[INFO] [stdout] ...  |
[INFO] [stdout] 69 | |                 }
[INFO] [stdout] 70 | |             );
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> debian_bridge_core/src/app/config.rs:121:21
[INFO] [stdout]     |
[INFO] [stdout] 121 |                     config.serialize(path);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ArgMatches`
[INFO] [stdout]  --> debian_bridge_cli/src/starter.rs:2:30
[INFO] [stdout]   |
[INFO] [stdout] 2 | use clap::{App, AppSettings, ArgMatches};
[INFO] [stdout]   |                              ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Program`
[INFO] [stdout]  --> debian_bridge_cli/src/starter.rs:3:73
[INFO] [stdout]   |
[INFO] [stdout] 3 | use debian_bridge_core::{App as Wrapper, Config, Docker, Feature, Icon, Program, System};
[INFO] [stdout]   |                                                                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `net::IpAddr`, `str::FromStr`
[INFO] [stdout]  --> debian_bridge_cli/src/starter.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     net::IpAddr,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 7 |     path::{Path, PathBuf},
[INFO] [stdout] 8 |     str::FromStr,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mocktopus_macros-0.7.11/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mocktopus_macros`
[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 `Command { std: "docker" "inspect" "452e8b809ac9fb9ef77aad9dd0c1ef7b4b449088b298d008f7b5c51be016ad59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "452e8b809ac9fb9ef77aad9dd0c1ef7b4b449088b298d008f7b5c51be016ad59", kill_on_drop: false }`
[INFO] [stdout] 452e8b809ac9fb9ef77aad9dd0c1ef7b4b449088b298d008f7b5c51be016ad59
