[INFO] cloning repository pop-os/upgrade
[INFO] running `"git" "clone" "--bare" "git://github.com/pop-os/upgrade.git" "work/cache/sources/gh/pop-os/upgrade"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/pop-os/upgrade'...
[INFO] running `"git" "clone" "work/cache/sources/gh/pop-os/upgrade" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/pop-os/upgrade"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/pop-os/upgrade'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pop-os/upgrade" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/pop-os/upgrade"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/pop-os/upgrade'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 366d2e0157fc0f5681c8344cb021b6e7a918f609
[INFO] sha for GitHub repo pop-os/upgrade: 366d2e0157fc0f5681c8344cb021b6e7a918f609
[INFO] validating manifest of pop-os/upgrade on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pop-os/upgrade on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pop-os/upgrade
[INFO] removed workspace from pop-os/upgrade
[INFO] finished frobbing pop-os/upgrade
[INFO] frobbed toml for pop-os/upgrade written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/pop-os/upgrade/Cargo.toml
[INFO] started frobbing pop-os/upgrade
[INFO] removed workspace from pop-os/upgrade
[INFO] finished frobbing pop-os/upgrade
[INFO] frobbed toml for pop-os/upgrade written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/pop-os/upgrade/Cargo.toml
[INFO] crate pop-os/upgrade already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-cli-wrappers`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-fetcher`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-keyring`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-sources-lists`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/async-fetcher`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/distinst/`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/exit-status-ext`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-release-file`
[INFO] [stderr] error: the lock file /mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/pop-os/upgrade/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/sysfs-class`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-cli-wrappers`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-fetcher`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-keyring`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-sources-lists`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/async-fetcher`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/distinst/`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/exit-status-ext`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-release-file`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/sysfs-class`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-cli-wrappers`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-fetcher`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-keyring`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-sources-lists`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/async-fetcher`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/distinst/`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/exit-status-ext`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-release-file`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shrinkwraprs v0.2.1
[INFO] [stderr]   Downloaded ubuntu-version v0.1.2
[INFO] [stderr]   Downloaded numtoa v0.2.3
[INFO] [stderr]   Downloaded progress-streams v1.0.0
[INFO] [stderr]   Downloaded systemd-boot-conf v0.1.0
[INFO] [stderr]   Downloaded snailquote v0.2.0
[INFO] [stderr]   Downloaded disk-types v0.1.2
[INFO] [stderr]   Downloaded tempfile-fast v0.2.4
[INFO] [stderr]   Downloaded libparted-sys v0.1.1
[INFO] [stderr]   Downloaded gpgrv v0.1.1
[INFO] [stderr]   Downloaded parallel-getter v0.2.0
[INFO] [stderr]   Downloaded cascade v0.1.3
[INFO] [stderr]   Downloaded atomic v0.4.5
[INFO] [stderr]   Downloaded sedregex v0.1.1
[INFO] [stderr]   Downloaded envfile v0.2.1
[INFO] [stderr]   Downloaded loopdev v0.2.1
[INFO] [stderr]   Downloaded fstab-generate v0.1.2
[INFO] [stderr]   Downloaded lz4 v1.23.1
[INFO] [stderr]   Downloaded lz4-sys v1.8.3
[INFO] [stderr]   Downloaded deb-architectures v0.1.0
[INFO] [stderr]   Downloaded iowrap v0.1.2
[INFO] [stderr]   Downloaded sys-mount v1.2.0
[INFO] [stderr]   Downloaded proc-mounts v0.1.2
[INFO] [stderr]   Downloaded os-detect v0.2.2
[INFO] [stderr]   Downloaded logind-dbus v0.1.1
[INFO] [stderr]   Downloaded hex-view v0.1.3
[INFO] [stderr]   Downloaded libparted v0.1.3
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking pop-os/upgrade against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-1/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/pop-os/upgrade:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0343a0eceaa7945b17485812b627759e2bb69ecf8dec9e05ea1fa7c9c7f3f901
[INFO] running `"docker" "start" "-a" "0343a0eceaa7945b17485812b627759e2bb69ecf8dec9e05ea1fa7c9c7f3f901"`
[INFO] [stderr]     Checking numtoa v0.2.3
[INFO] [stderr]     Checking iowrap v0.1.2
[INFO] [stderr]     Checking distinst-bootloader v0.1.0 (https://github.com/pop-os/distinst/#38a6394a)
[INFO] [stderr]     Checking hex-view v0.1.3
[INFO] [stderr]     Checking deb-architectures v0.1.0
[INFO] [stderr]     Checking cascade v0.1.3
[INFO] [stderr]     Checking progress-streams v1.0.0
[INFO] [stderr]     Checking exit-status-ext v0.1.0 (https://github.com/pop-os/exit-status-ext#46700735)
[INFO] [stderr]     Checking atomic v0.4.5
[INFO] [stderr]    Compiling syntex_pos v0.58.1
[INFO] [stderr]    Compiling clang-sys v0.19.0
[INFO] [stderr]    Compiling lz4-sys v1.8.3
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling lzma-sys v0.1.14
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]     Checking snailquote v0.2.0
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]     Checking os-release v0.1.0
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking sysfs-class v0.1.1 (https://github.com/pop-os/sysfs-class#7bc914e0)
[INFO] [stderr]     Checking envfile v0.2.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.12
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking signal-hook-registry v1.0.1
[INFO] [stderr]     Checking filetime v0.2.6
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking apt-cli-wrappers v0.1.0 (https://github.com/pop-os/apt-cli-wrappers#7ea2fd5e)
[INFO] [stderr]     Checking fern v0.5.8
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling pulldown-cmark v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.30
[INFO] [stderr]     Checking miniz-sys v0.1.12
[INFO] [stderr]    Compiling syntex_errors v0.58.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking loopdev v0.2.1
[INFO] [stderr]     Checking signal-hook v0.1.10
[INFO] [stderr]    Compiling backtrace v0.3.32
[INFO] [stderr]     Checking dbus v0.6.4
[INFO] [stderr]     Checking flate2 v1.0.9
[INFO] [stderr]     Checking crossbeam-deque v0.5.2
[INFO] [stderr]    Compiling smart-default v0.3.0
[INFO] [stderr]    Compiling derive-new v0.5.7
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking sys-mount v1.2.0
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]     Checking sedregex v0.1.1
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking crossbeam v0.7.1
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling cexpr v0.2.3
[INFO] [stderr]    Compiling syntex_syntax v0.58.1
[INFO] [stderr]     Checking logind-dbus v0.1.1
[INFO] [stderr]     Checking distinst-chroot v0.1.0 (https://github.com/pop-os/distinst/#38a6394a)
[INFO] [stderr]     Checking promptly v0.1.5
[INFO] [stderr]     Checking distinst-utils v0.1.0 (https://github.com/pop-os/distinst/#38a6394a)
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]     Checking apt-release-file v0.1.1 (https://github.com/pop-os/apt-release-file#a080bc6a)
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking tempfile-fast v0.2.4
[INFO] [stderr]     Checking gpgrv v0.1.1
[INFO] [stderr]    Compiling err-derive v0.1.5
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling shrinkwraprs v0.2.1
[INFO] [stderr]     Checking apt-keyring v0.1.0 (https://github.com/pop-os/apt-keyring#4b0df7f6)
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking tokio-process v0.2.4
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking crossbeam-channel v0.2.6
[INFO] [stderr]     Checking reqwest v0.9.18
[INFO] [stderr]     Checking partition-identity v0.2.6
[INFO] [stderr]     Checking ubuntu-version v0.1.2
[INFO] [stderr]     Checking systemd-boot-conf v0.1.0
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]     Checking os-detect v0.2.2
[INFO] [stderr]     Checking proc-mounts v0.1.2
[INFO] [stderr]     Checking proc-mounts v0.2.2
[INFO] [stderr]     Checking crossbeam v0.4.1
[INFO] [stderr]     Checking apt-sources-lists v0.1.0 (https://github.com/pop-os/apt-sources-lists#0f2c82fb)
[INFO] [stderr]     Checking async-fetcher v0.2.0 (https://github.com/pop-os/async-fetcher#6b607384)
[INFO] [stderr]     Checking parallel-getter v0.2.0
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]    Compiling lz4 v1.23.1
[INFO] [stderr]     Checking apt-fetcher v0.1.0 (https://github.com/pop-os/apt-fetcher#b190ca87)
[INFO] [stderr]    Compiling syntex v0.58.1
[INFO] [stderr]    Compiling aster v0.41.0
[INFO] [stderr]    Compiling quasi v0.32.0
[INFO] [stderr]    Compiling quasi_codegen v0.32.0
[INFO] [stderr]    Compiling bindgen v0.30.0
[INFO] [stderr]    Compiling libparted-sys v0.1.1
[INFO] [stderr]     Checking libparted v0.1.3
[INFO] [stderr]     Checking disk-types v0.1.2
[INFO] [stderr]     Checking distinst-external-commands v0.1.0 (https://github.com/pop-os/distinst/#38a6394a)
[INFO] [stderr]     Checking fstab-generate v0.1.2
[INFO] [stderr]     Checking distinst-disk-ops v0.1.0 (https://github.com/pop-os/distinst/#38a6394a)
[INFO] [stderr]     Checking distinst-disks v0.1.0 (https://github.com/pop-os/distinst/#38a6394a)
[INFO] [stderr]     Checking pop-upgrade v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/release/mod.rs:129:19
[INFO] [stderr]     |
[INFO] [stderr] 129 |         func: Arc<Fn(FetchEvent) + Send + Sync>,
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FetchEvent) + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/release/mod.rs:232:20
[INFO] [stderr]     |
[INFO] [stderr] 232 |         fetch: Arc<Fn(FetchEvent) + Send + Sync>,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FetchEvent) + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/release/mod.rs:352:44
[INFO] [stderr]     |
[INFO] [stderr] 352 |     fn attempt_fetch(&mut self, fetch: Arc<Fn(FetchEvent) + Send + Sync>) -> RelResult<()> {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FetchEvent) + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/release/mod.rs:370:20
[INFO] [stderr]     |
[INFO] [stderr] 370 |         fetch: Arc<Fn(FetchEvent) + Send + Sync>,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FetchEvent) + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/release/mod.rs:129:19
[INFO] [stderr]     |
[INFO] [stderr] 129 |         func: Arc<Fn(FetchEvent) + Send + Sync>,
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FetchEvent) + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/release/mod.rs:232:20
[INFO] [stderr]     |
[INFO] [stderr] 232 |         fetch: Arc<Fn(FetchEvent) + Send + Sync>,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FetchEvent) + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/release/mod.rs:352:44
[INFO] [stderr]     |
[INFO] [stderr] 352 |     fn attempt_fetch(&mut self, fetch: Arc<Fn(FetchEvent) + Send + Sync>) -> RelResult<()> {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FetchEvent) + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/release/mod.rs:370:20
[INFO] [stderr]     |
[INFO] [stderr] 370 |         fetch: Arc<Fn(FetchEvent) + Send + Sync>,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(FetchEvent) + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `flags`
[INFO] [stderr]    --> src/recovery/mod.rs:205:5
[INFO] [stderr]     |
[INFO] [stderr] 205 |     flags: ReleaseFlags,
[INFO] [stderr]     |     ^^^^^ help: consider prefixing with an underscore: `_flags`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `flags`
[INFO] [stderr]    --> src/recovery/mod.rs:205:5
[INFO] [stderr]     |
[INFO] [stderr] 205 |     flags: ReleaseFlags,
[INFO] [stderr]     |     ^^^^^ help: consider prefixing with an underscore: `_flags`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `build`
[INFO] [stderr]    --> src/release/mod.rs:642:23
[INFO] [stderr]     |
[INFO] [stderr] 642 |         let (current, build) = find_current_release(v1804, releases_up_to_1910, None).unwrap();
[INFO] [stderr]     |                       ^^^^^ help: consider prefixing with an underscore: `_build`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `build`
[INFO] [stderr]    --> src/release/mod.rs:645:23
[INFO] [stderr]     |
[INFO] [stderr] 645 |         let (current, build) = find_current_release(v1904, releases_up_to_1904, None).unwrap();
[INFO] [stderr]     |                       ^^^^^ help: consider prefixing with an underscore: `_build`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `build`
[INFO] [stderr]    --> src/release/mod.rs:648:23
[INFO] [stderr]     |
[INFO] [stderr] 648 |         let (current, build) =
[INFO] [stderr]     |                       ^^^^^ help: consider prefixing with an underscore: `_build`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/release/mod.rs:492:41
[INFO] [stderr]     |
[INFO] [stderr] 492 |             if let (Some(current), Some(mut next)) = (iter.next(), iter.next()) {
[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/release/mod.rs:492:41
[INFO] [stderr]     |
[INFO] [stderr] 492 |             if let (Some(current), Some(mut next)) = (iter.next(), iter.next()) {
[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: function is never used: `from_file`
[INFO] [stderr]    --> src/recovery/mod.rs:220:1
[INFO] [stderr]     |
[INFO] [stderr] 220 | fn from_file(path: &PathBuf) -> RecResult<PathBuf> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEPRECATED_PACKAGES`
[INFO] [stderr]   --> src/release/mod.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | / const DEPRECATED_PACKAGES: &[&str] = &[
[INFO] [stderr] 30 | |     // Not critical to the system.
[INFO] [stderr] 31 | |     // Slows the system down drastically.
[INFO] [stderr] 32 | |     // Filles journal logs with worthless messages.
[INFO] [stderr] 33 | |     // No longer maintained, and removed from repos since 18.10.
[INFO] [stderr] 34 | |     "ureadahead",
[INFO] [stderr] 35 | | ];
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `PENDING`
[INFO] [stderr]  --> src/signal_handler.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub static PENDING: AtomicUsize = AtomicUsize::new(0);
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Signal`
[INFO] [stderr]  --> src/signal_handler.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub enum Signal {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `init`
[INFO] [stderr]   --> src/signal_handler.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn init() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/daemon/mod.rs:201:29
[INFO] [stderr]     |
[INFO] [stderr] 201 | /                             runtime.package_upgrade(|event| {
[INFO] [stderr] 202 | |                                 let _ = dbus_tx.send(SignalEvent::Upgrade(event));
[INFO] [stderr] 203 | |                             });
[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: function is never used: `from_file`
[INFO] [stderr]    --> src/recovery/mod.rs:220:1
[INFO] [stderr]     |
[INFO] [stderr] 220 | fn from_file(path: &PathBuf) -> RecResult<PathBuf> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEPRECATED_PACKAGES`
[INFO] [stderr]   --> src/release/mod.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | / const DEPRECATED_PACKAGES: &[&str] = &[
[INFO] [stderr] 30 | |     // Not critical to the system.
[INFO] [stderr] 31 | |     // Slows the system down drastically.
[INFO] [stderr] 32 | |     // Filles journal logs with worthless messages.
[INFO] [stderr] 33 | |     // No longer maintained, and removed from repos since 18.10.
[INFO] [stderr] 34 | |     "ureadahead",
[INFO] [stderr] 35 | | ];
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `PENDING`
[INFO] [stderr]  --> src/signal_handler.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub static PENDING: AtomicUsize = AtomicUsize::new(0);
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Signal`
[INFO] [stderr]  --> src/signal_handler.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub enum Signal {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `init`
[INFO] [stderr]   --> src/signal_handler.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn init() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/daemon/mod.rs:201:29
[INFO] [stderr]     |
[INFO] [stderr] 201 | /                             runtime.package_upgrade(|event| {
[INFO] [stderr] 202 | |                                 let _ = dbus_tx.send(SignalEvent::Upgrade(event));
[INFO] [stderr] 203 | |                             });
[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 import: `Message`
[INFO] [stderr]  --> src/cli/mod.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use dbus::{self, Message};
[INFO] [stderr]   |                  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Message`
[INFO] [stderr]  --> src/cli/mod.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 | use dbus::{self, Message};
[INFO] [stderr]   |                  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 23s
[INFO] running `"docker" "inspect" "0343a0eceaa7945b17485812b627759e2bb69ecf8dec9e05ea1fa7c9c7f3f901"`
[INFO] running `"docker" "rm" "-f" "0343a0eceaa7945b17485812b627759e2bb69ecf8dec9e05ea1fa7c9c7f3f901"`
[INFO] [stdout] 0343a0eceaa7945b17485812b627759e2bb69ecf8dec9e05ea1fa7c9c7f3f901