[INFO] fetching crate libalpm 0.1.2...
[INFO] checking libalpm-0.1.2 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate libalpm 0.1.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate libalpm 0.1.2 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libalpm 0.1.2
[INFO] finished tweaking crates.io crate libalpm 0.1.2
[INFO] tweaked toml for crates.io crate libalpm 0.1.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8e68c7f3684b1d64e65ed566c6b718952d2fffb4926f9a9ee9e18a68972417b2
[INFO] running `Command { std: "docker" "start" "-a" "8e68c7f3684b1d64e65ed566c6b718952d2fffb4926f9a9ee9e18a68972417b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e68c7f3684b1d64e65ed566c6b718952d2fffb4926f9a9ee9e18a68972417b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e68c7f3684b1d64e65ed566c6b718952d2fffb4926f9a9ee9e18a68972417b2", kill_on_drop: false }`
[INFO] [stdout] 8e68c7f3684b1d64e65ed566c6b718952d2fffb4926f9a9ee9e18a68972417b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 405afe776d8cd3258e27904163d51ee605f3443a4b6562a4b6fe1bd04311029a
[INFO] running `Command { std: "docker" "start" "-a" "405afe776d8cd3258e27904163d51ee605f3443a4b6562a4b6fe1bd04311029a", kill_on_drop: false }`
[INFO] [stderr]     Checking alpm-sys v0.1.2
[INFO] [stderr]     Checking libalpm v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Package`
[INFO] [stdout]  --> src/event.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use package::{Package, PackageOperation};
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/db.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use libc::{self, c_char};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::borrow::Borrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]   --> src/lib.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use std::mem;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:45:41
[INFO] [stdout]    |
[INFO] [stdout] 45 |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(LogLevels, String) + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:45:41
[INFO] [stdout]    |
[INFO] [stdout] 45 |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(LogLevels, String) + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:46:46
[INFO] [stdout]    |
[INFO] [stdout] 46 |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&str, u64, u64) + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:47:43
[INFO] [stdout]    |
[INFO] [stdout] 47 |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&str, &str, bool) -> DownloadResult + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:48:45
[INFO] [stdout]    |
[INFO] [stdout] 48 |     static ref DLTOTAL_CB: Mutex<Option<Box<FnMut(u64) + Send>>> = Default::default();
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(u64) + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:49:43
[INFO] [stdout]    |
[INFO] [stdout] 49 |     static ref EVENT_CB: Mutex<Option<Box<FnMut(Event) + Send>>> = Default::default();
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Event) + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / lazy_static! {
[INFO] [stdout] 45 | |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 46 | |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout] 47 | |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |     //static ref PROGRESS_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / lazy_static! {
[INFO] [stdout] 45 | |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 46 | |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout] 47 | |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |     //static ref PROGRESS_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / lazy_static! {
[INFO] [stdout] 45 | |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 46 | |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout] 47 | |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |     //static ref PROGRESS_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / lazy_static! {
[INFO] [stdout] 45 | |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 46 | |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout] 47 | |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |     //static ref PROGRESS_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / lazy_static! {
[INFO] [stdout] 45 | |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 46 | |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout] 47 | |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |     //static ref PROGRESS_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Package`
[INFO] [stdout]  --> src/event.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use package::{Package, PackageOperation};
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/db.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use libc::{self, c_char};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]   --> src/lib.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::borrow::Borrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]   --> src/lib.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use std::mem;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:45:41
[INFO] [stdout]    |
[INFO] [stdout] 45 |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(LogLevels, String) + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:45:41
[INFO] [stdout]    |
[INFO] [stdout] 45 |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(LogLevels, String) + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:46:46
[INFO] [stdout]    |
[INFO] [stdout] 46 |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&str, u64, u64) + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:47:43
[INFO] [stdout]    |
[INFO] [stdout] 47 |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&str, &str, bool) -> DownloadResult + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:48:45
[INFO] [stdout]    |
[INFO] [stdout] 48 |     static ref DLTOTAL_CB: Mutex<Option<Box<FnMut(u64) + Send>>> = Default::default();
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(u64) + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:49:43
[INFO] [stdout]    |
[INFO] [stdout] 49 |     static ref EVENT_CB: Mutex<Option<Box<FnMut(Event) + Send>>> = Default::default();
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Event) + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/error.rs:203:30
[INFO] [stdout]     |
[INFO] [stdout] 203 |         write!(f, "{}", self.description())
[INFO] [stdout]     |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / lazy_static! {
[INFO] [stdout] 45 | |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 46 | |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout] 47 | |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |     //static ref PROGRESS_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / lazy_static! {
[INFO] [stdout] 45 | |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 46 | |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout] 47 | |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |     //static ref PROGRESS_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / lazy_static! {
[INFO] [stdout] 45 | |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 46 | |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout] 47 | |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |     //static ref PROGRESS_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / lazy_static! {
[INFO] [stdout] 45 | |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 46 | |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout] 47 | |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |     //static ref PROGRESS_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / lazy_static! {
[INFO] [stdout] 45 | |     static ref LOG_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 46 | |     static ref DOWNLOAD_CB: Mutex<Option<Box<FnMut(&str, u64, u64) + Send>>> = Default::default();
[INFO] [stdout] 47 | |     static ref FETCH_CB: Mutex<Option<Box<FnMut(&str, &str, bool) -> DownloadResult + Send>>> = Default::default();
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |     //static ref PROGRESS_CB: Mutex<Option<Box<FnMut(LogLevels, String) + Send>>> = Default::default();
[INFO] [stdout] 52 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/package.rs:734:13
[INFO] [stdout]     |
[INFO] [stdout] 733 |             ALPM_PKG_VALIDATION_UNKNWON => Validation::Unknown,
[INFO] [stdout]     |             --------------------------- matches any value
[INFO] [stdout] 734 |             ALPM_PKG_VALIDATION_NONE => Validation::None,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^ unreachable pattern
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/package.rs:735:13
[INFO] [stdout]     |
[INFO] [stdout] 733 |             ALPM_PKG_VALIDATION_UNKNWON => Validation::Unknown,
[INFO] [stdout]     |             --------------------------- matches any value
[INFO] [stdout] 734 |             ALPM_PKG_VALIDATION_NONE => Validation::None,
[INFO] [stdout] 735 |             other => Validation::Some(ValidationMethod {
[INFO] [stdout]     |             ^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `options`
[INFO] [stdout]   --> src/lib.rs:88:25
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn with_options(options: &Options) -> AlpmResult<Alpm> {
[INFO] [stdout]    |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_options`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]    --> src/lib.rs:227:40
[INFO] [stdout]     |
[INFO] [stdout] 227 |     pub fn question_function<F>(&self, func: F)
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]    --> src/lib.rs:239:40
[INFO] [stdout]     |
[INFO] [stdout] 239 |     pub fn progress_function<F>(&self, func: F)
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ALPM_PKG_VALIDATION_UNKNWON`
[INFO] [stdout]    --> src/package.rs:733:13
[INFO] [stdout]     |
[INFO] [stdout] 733 |             ALPM_PKG_VALIDATION_UNKNWON => Validation::Unknown,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ALPM_PKG_VALIDATION_UNKNWON`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/package.rs:735:13
[INFO] [stdout]     |
[INFO] [stdout] 735 |             other => Validation::Some(ValidationMethod {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/package.rs:832:13
[INFO] [stdout]     |
[INFO] [stdout] 832 |         for i in 0..count {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loc`
[INFO] [stdout]   --> src/options.rs:36:21
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn from_ini(loc: &Path) -> Option<Options> {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_loc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> src/util.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let first = raw;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/error.rs:203:30
[INFO] [stdout]     |
[INFO] [stdout] 203 |         write!(f, "{}", self.description())
[INFO] [stdout]     |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/util.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |     let mut p = libc::calloc(len + 1, mem::size_of::<libc::c_char>()) as *mut libc::c_char;
[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: unnecessary `unsafe` block
[INFO] [stdout]   --> src/db.rs:66:54
[INFO] [stdout]    |
[INFO] [stdout] 65 |         unsafe {
[INFO] [stdout]    |         ------ because it's nested under this `unsafe` block
[INFO] [stdout] 66 |             let list = vec_to_alpm_list(servers, |s| unsafe {
[INFO] [stdout]    |                                                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `handle`
[INFO] [stdout]   --> src/package.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     handle: &'a Alpm
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/package.rs:512:26
[INFO] [stdout]     |
[INFO] [stdout] 512 |     pub(crate) unsafe fn new<'b>(name: *const c_char, packages: *const alpm_list_t) -> Group<'b> {
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `pub_restricted` has been stable since 1.18.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(pub_restricted)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: getting the inner pointer of a temporary `CString`
[INFO] [stdout]   --> src/package.rs:40:69
[INFO] [stdout]    |
[INFO] [stdout] 40 | ...                   CString::new(filename).unwrap().as_ptr(),
[INFO] [stdout]    |                       ------------------------------- ^^^^^^ this pointer will be invalid
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(temporary_cstring_as_ptr)]` on by default
[INFO] [stdout]    = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stdout]    = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ALPM_PKG_VALIDATION_UNKNWON` should have a snake case name
[INFO] [stdout]    --> src/package.rs:733:13
[INFO] [stdout]     |
[INFO] [stdout] 733 |             ALPM_PKG_VALIDATION_UNKNWON => Validation::Unknown,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `alpm_pkg_validation_unknwon`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/package.rs:734:13
[INFO] [stdout]     |
[INFO] [stdout] 733 |             ALPM_PKG_VALIDATION_UNKNWON => Validation::Unknown,
[INFO] [stdout]     |             --------------------------- matches any value
[INFO] [stdout] 734 |             ALPM_PKG_VALIDATION_NONE => Validation::None,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^ unreachable pattern
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/package.rs:735:13
[INFO] [stdout]     |
[INFO] [stdout] 733 |             ALPM_PKG_VALIDATION_UNKNWON => Validation::Unknown,
[INFO] [stdout]     |             --------------------------- matches any value
[INFO] [stdout] 734 |             ALPM_PKG_VALIDATION_NONE => Validation::None,
[INFO] [stdout] 735 |             other => Validation::Some(ValidationMethod {
[INFO] [stdout]     |             ^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `options`
[INFO] [stdout]   --> src/lib.rs:88:25
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn with_options(options: &Options) -> AlpmResult<Alpm> {
[INFO] [stdout]    |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_options`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]    --> src/lib.rs:227:40
[INFO] [stdout]     |
[INFO] [stdout] 227 |     pub fn question_function<F>(&self, func: F)
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]    --> src/lib.rs:239:40
[INFO] [stdout]     |
[INFO] [stdout] 239 |     pub fn progress_function<F>(&self, func: F)
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ALPM_PKG_VALIDATION_UNKNWON`
[INFO] [stdout]    --> src/package.rs:733:13
[INFO] [stdout]     |
[INFO] [stdout] 733 |             ALPM_PKG_VALIDATION_UNKNWON => Validation::Unknown,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ALPM_PKG_VALIDATION_UNKNWON`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/package.rs:735:13
[INFO] [stdout]     |
[INFO] [stdout] 735 |             other => Validation::Some(ValidationMethod {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/package.rs:832:13
[INFO] [stdout]     |
[INFO] [stdout] 832 |         for i in 0..count {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loc`
[INFO] [stdout]   --> src/options.rs:36:21
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn from_ini(loc: &Path) -> Option<Options> {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_loc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> src/util.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let first = raw;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/util.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |     let mut p = libc::calloc(len + 1, mem::size_of::<libc::c_char>()) as *mut libc::c_char;
[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: unused variable: `loc`
[INFO] [stdout]   --> examples/download_package.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn fetch(url: &str, loc: &str, force: bool) -> DownloadResult {
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_loc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `force`
[INFO] [stdout]   --> examples/download_package.rs:13:32
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn fetch(url: &str, loc: &str, force: bool) -> DownloadResult {
[INFO] [stdout]    |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_force`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/package.rs:575:5
[INFO] [stdout]     |
[INFO] [stdout] 575 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/db.rs:66:54
[INFO] [stdout]    |
[INFO] [stdout] 65 |         unsafe {
[INFO] [stdout]    |         ------ because it's nested under this `unsafe` block
[INFO] [stdout] 66 |             let list = vec_to_alpm_list(servers, |s| unsafe {
[INFO] [stdout]    |                                                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `handle`
[INFO] [stdout]   --> src/package.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     handle: &'a Alpm
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/package.rs:512:26
[INFO] [stdout]     |
[INFO] [stdout] 512 |     pub(crate) unsafe fn new<'b>(name: *const c_char, packages: *const alpm_list_t) -> Group<'b> {
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `pub_restricted` has been stable since 1.18.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(pub_restricted)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: getting the inner pointer of a temporary `CString`
[INFO] [stdout]   --> src/package.rs:40:69
[INFO] [stdout]    |
[INFO] [stdout] 40 | ...                   CString::new(filename).unwrap().as_ptr(),
[INFO] [stdout]    |                       ------------------------------- ^^^^^^ this pointer will be invalid
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(temporary_cstring_as_ptr)]` on by default
[INFO] [stdout]    = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stdout]    = help: for more information, see https://doc.rust-lang.org/reference/destructors.html
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ALPM_PKG_VALIDATION_UNKNWON` should have a snake case name
[INFO] [stdout]    --> src/package.rs:733:13
[INFO] [stdout]     |
[INFO] [stdout] 733 |             ALPM_PKG_VALIDATION_UNKNWON => Validation::Unknown,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `alpm_pkg_validation_unknwon`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> examples/package.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> examples/package.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |         db.add_server(&fixed_servers.next().unwrap());
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.07s
[INFO] running `Command { std: "docker" "inspect" "405afe776d8cd3258e27904163d51ee605f3443a4b6562a4b6fe1bd04311029a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "405afe776d8cd3258e27904163d51ee605f3443a4b6562a4b6fe1bd04311029a", kill_on_drop: false }`
[INFO] [stdout] 405afe776d8cd3258e27904163d51ee605f3443a4b6562a4b6fe1bd04311029a