[INFO] cloning repository https://github.com/yyklll/skeleton
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yyklll/skeleton" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyklll%2Fskeleton", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyklll%2Fskeleton'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 24eb82d118ce76281e35ed6f7deb89f355e4d8b3
[INFO] testing yyklll/skeleton against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyyklll%2Fskeleton" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yyklll/skeleton on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yyklll/skeleton
[INFO] finished tweaking git repo https://github.com/yyklll/skeleton
[INFO] tweaked toml for git repo https://github.com/yyklll/skeleton written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yyklll/skeleton already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-serde-json v0.2.0
[INFO] [stderr]   Downloaded iovec v0.1.3
[INFO] [stderr]   Downloaded tokio-serde v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95c4a0ee7d0d1c84a6a6b1ba5ed5cfacfc77bdac3d92d55e666137fe191c26db
[INFO] running `Command { std: "docker" "start" "-a" "95c4a0ee7d0d1c84a6a6b1ba5ed5cfacfc77bdac3d92d55e666137fe191c26db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95c4a0ee7d0d1c84a6a6b1ba5ed5cfacfc77bdac3d92d55e666137fe191c26db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95c4a0ee7d0d1c84a6a6b1ba5ed5cfacfc77bdac3d92d55e666137fe191c26db", kill_on_drop: false }`
[INFO] [stdout] 95c4a0ee7d0d1c84a6a6b1ba5ed5cfacfc77bdac3d92d55e666137fe191c26db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5350eb10d3879fa643b4c191ffc812ad7ab51fdb5acad15131c3e07973fddb8a
[INFO] running `Command { std: "docker" "start" "-a" "5350eb10d3879fa643b4c191ffc812ad7ab51fdb5acad15131c3e07973fddb8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling futures v0.1.29
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling smallvec v0.6.10
[INFO] [stderr]    Compiling lock_api v0.3.1
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling iovec v0.1.3
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling tokio-executor v0.1.8
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling tokio-sync v0.1.6
[INFO] [stderr]    Compiling tokio-threadpool v0.1.16
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.10
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling tokio-udp v0.1.5
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling serde_test v0.8.23
[INFO] [stderr]    Compiling tokio-timer v0.2.11
[INFO] [stderr]    Compiling backtrace v0.3.38
[INFO] [stderr]    Compiling tokio-serde v0.3.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde-hjson v0.8.2
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling serde_json v1.0.41
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling config v0.9.3
[INFO] [stderr]    Compiling tokio-serde-json v0.2.0
[INFO] [stderr]    Compiling skeleton v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:11:40
[INFO] [stdout]    |
[INFO] [stdout] 11 |   fn command1(&self, arg1: u32) -> Box<Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |   fn command1(&self, arg1: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:14:51
[INFO] [stdout]    |
[INFO] [stdout] 14 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:31:40
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn command1(&self, arg1: u32) -> Box<Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn command1(&self, arg1: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:45:51
[INFO] [stdout]    |
[INFO] [stdout] 45 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 45 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `configs_from_file`
[INFO] [stdout]   --> src/bin/server.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 |   let configs_from_file = settings.try_into::<HashMap<String, String>>().unwrap();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_configs_from_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/bin/client.rs:70:10
[INFO] [stdout]    |
[INFO] [stdout] 70 |         if let (value, _) = client
[INFO] [stdout]    |  __________^
[INFO] [stdout] 71 | |         .and_then(move |client| client.command1(arg1))
[INFO] [stdout] 72 | |         .wait()?
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/bin/client.rs:81:10
[INFO] [stdout]    |
[INFO] [stdout] 81 |         if let (value, _) = client
[INFO] [stdout]    |  __________^
[INFO] [stdout] 82 | |         .and_then(move |client| client.command2(arg1, arg2))
[INFO] [stdout] 83 | |         .wait()?
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.10s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "5350eb10d3879fa643b4c191ffc812ad7ab51fdb5acad15131c3e07973fddb8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5350eb10d3879fa643b4c191ffc812ad7ab51fdb5acad15131c3e07973fddb8a", kill_on_drop: false }`
[INFO] [stdout] 5350eb10d3879fa643b4c191ffc812ad7ab51fdb5acad15131c3e07973fddb8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42d2eff1ee36168b1d890233ae98e4ca98c0f26c300addf09d42809a18aa86a1
[INFO] running `Command { std: "docker" "start" "-a" "42d2eff1ee36168b1d890233ae98e4ca98c0f26c300addf09d42809a18aa86a1", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:11:40
[INFO] [stdout]    |
[INFO] [stdout] 11 |   fn command1(&self, arg1: u32) -> Box<Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |   fn command1(&self, arg1: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:14:51
[INFO] [stdout]    |
[INFO] [stdout] 14 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:31:40
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn command1(&self, arg1: u32) -> Box<Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn command1(&self, arg1: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:45:51
[INFO] [stdout]    |
[INFO] [stdout] 45 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 45 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling skeleton v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:11:40
[INFO] [stdout]    |
[INFO] [stdout] 11 |   fn command1(&self, arg1: u32) -> Box<Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |   fn command1(&self, arg1: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:14:51
[INFO] [stdout]    |
[INFO] [stdout] 14 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send>;
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:31:40
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn command1(&self, arg1: u32) -> Box<Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn command1(&self, arg1: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/engine/mod.rs:45:51
[INFO] [stdout]    |
[INFO] [stdout] 45 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 45 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `configs_from_file`
[INFO] [stdout]   --> src/bin/server.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 |   let configs_from_file = settings.try_into::<HashMap<String, String>>().unwrap();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_configs_from_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/bin/client.rs:70:10
[INFO] [stdout]    |
[INFO] [stdout] 70 |         if let (value, _) = client
[INFO] [stdout]    |  __________^
[INFO] [stdout] 71 | |         .and_then(move |client| client.command1(arg1))
[INFO] [stdout] 72 | |         .wait()?
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/bin/client.rs:81:10
[INFO] [stdout]    |
[INFO] [stdout] 81 |         if let (value, _) = client
[INFO] [stdout]    |  __________^
[INFO] [stdout] 82 | |         .and_then(move |client| client.command2(arg1, arg2))
[INFO] [stdout] 83 | |         .wait()?
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "42d2eff1ee36168b1d890233ae98e4ca98c0f26c300addf09d42809a18aa86a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42d2eff1ee36168b1d890233ae98e4ca98c0f26c300addf09d42809a18aa86a1", kill_on_drop: false }`
[INFO] [stdout] 42d2eff1ee36168b1d890233ae98e4ca98c0f26c300addf09d42809a18aa86a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fc7294d5edced9e56c0546f4259e3d39f5f668ae5503740adb7b534cee2b74bd
[INFO] running `Command { std: "docker" "start" "-a" "fc7294d5edced9e56c0546f4259e3d39f5f668ae5503740adb7b534cee2b74bd", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/mod.rs:11:40
[INFO] [stderr]    |
[INFO] [stderr] 11 |   fn command1(&self, arg1: u32) -> Box<Future<Item = u32, Error = Error> + Send>;
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 11 |   fn command1(&self, arg1: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send>;
[INFO] [stderr]    |                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/mod.rs:14:51
[INFO] [stderr]    |
[INFO] [stderr] 14 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<Future<Item = u32, Error = Error> + Send>;
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 14 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send>;
[INFO] [stderr]    |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/mod.rs:31:40
[INFO] [stderr]    |
[INFO] [stderr] 31 |   fn command1(&self, arg1: u32) -> Box<Future<Item = u32, Error = Error> + Send> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 31 |   fn command1(&self, arg1: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send> {
[INFO] [stderr]    |                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/engine/mod.rs:45:51
[INFO] [stderr]    |
[INFO] [stderr] 45 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<Future<Item = u32, Error = Error> + Send> {
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 45 |   fn command2(&self, arg1: u32, arg2: u32) -> Box<dyn Future<Item = u32, Error = Error> + Send> {
[INFO] [stderr]    |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: `skeleton` (lib) generated 4 warnings (run `cargo fix --lib -p skeleton` to apply 4 suggestions)
[INFO] [stderr] warning: `skeleton` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr] warning: unused variable: `configs_from_file`
[INFO] [stderr]   --> src/bin/server.rs:40:7
[INFO] [stderr]    |
[INFO] [stderr] 40 |   let configs_from_file = settings.try_into::<HashMap<String, String>>().unwrap();
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_configs_from_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]   --> src/bin/client.rs:70:10
[INFO] [stderr]    |
[INFO] [stderr] 70 |         if let (value, _) = client
[INFO] [stderr]    |  __________^
[INFO] [stderr] 71 | |         .and_then(move |client| client.command1(arg1))
[INFO] [stderr] 72 | |         .wait()?
[INFO] [stderr]    | |________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]    = help: consider replacing the `if let` with a `let`
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable `if let` pattern
[INFO] [stderr]   --> src/bin/client.rs:81:10
[INFO] [stderr]    |
[INFO] [stderr] 81 |         if let (value, _) = client
[INFO] [stderr]    |  __________^
[INFO] [stderr] 82 | |         .and_then(move |client| client.command2(arg1, arg2))
[INFO] [stderr] 83 | |         .wait()?
[INFO] [stderr]    | |________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stderr]    = help: consider replacing the `if let` with a `let`
[INFO] [stderr] 
[INFO] [stderr] warning: `skeleton` (bin "server" test) generated 1 warning (run `cargo fix --bin "server" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `skeleton` (bin "client" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/skeleton-59bdd485e238de92)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/client.rs (/opt/rustwide/target/debug/deps/client-df315af693a3d756)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/server.rs (/opt/rustwide/target/debug/deps/server-ed333beb5d01fb32)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests skeleton
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fc7294d5edced9e56c0546f4259e3d39f5f668ae5503740adb7b534cee2b74bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc7294d5edced9e56c0546f4259e3d39f5f668ae5503740adb7b534cee2b74bd", kill_on_drop: false }`
[INFO] [stdout] fc7294d5edced9e56c0546f4259e3d39f5f668ae5503740adb7b534cee2b74bd
