[INFO] fetching crate wombo 0.1.2...
[INFO] checking wombo-0.1.2 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate wombo 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate wombo 0.1.2
[INFO] finished tweaking crates.io crate wombo 0.1.2
[INFO] tweaked toml for crates.io crate wombo 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wombo 0.1.2 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 83 packages to latest compatible versions
[INFO] [stderr]       Adding futures v0.1.31 (available: v0.3.31)
[INFO] [stderr]       Adding parking_lot v0.5.5 (available: v0.12.5)
[INFO] [stderr]       Adding pretty_env_logger v0.1.1 (available: v0.5.0)
[INFO] [stderr]       Adding thread-id v3.3.0 (available: v5.0.0)
[INFO] [stderr]       Adding tokio-timer v0.1.2 (available: v0.2.13)
[INFO] [stderr]       Adding uuid v0.5.1 (available: v1.19.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6438bfe9904813f77722918cb2add27b7f65751ce0c843b617763db52135f271
[INFO] running `Command { std: "docker" "start" "-a" "6438bfe9904813f77722918cb2add27b7f65751ce0c843b617763db52135f271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6438bfe9904813f77722918cb2add27b7f65751ce0c843b617763db52135f271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6438bfe9904813f77722918cb2add27b7f65751ce0c843b617763db52135f271", kill_on_drop: false }`
[INFO] [stdout] 6438bfe9904813f77722918cb2add27b7f65751ce0c843b617763db52135f271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b474be3c83b50e0e1455f03c9a94f6710b1952b7df695578d37a6458b770905d
[INFO] running `Command { std: "docker" "start" "-a" "b474be3c83b50e0e1455f03c9a94f6710b1952b7df695578d37a6458b770905d", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking ucd-util v0.1.10
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking pretty_env_logger v0.1.1
[INFO] [stderr]     Checking wombo v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:136:48
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub type CancelHookFt<T: Send + 'static> = Box<Future<Item=T, Error=()>>;
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub type CancelHookFt<T: Send + 'static> = Box<dyn Future<Item=T, Error=()>>;
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:136:48
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub type CancelHookFt<T: Send + 'static> = Box<Future<Item=T, Error=()>>;
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub type CancelHookFt<T: Send + 'static> = Box<dyn Future<Item=T, Error=()>>;
[INFO] [stdout]     |                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:37:60
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn future_error<T: 'static, E: 'static>(err: E) -> Box<Future<Item=T, Error=E>> {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn future_error<T: 'static, E: 'static>(err: E) -> Box<dyn Future<Item=T, Error=E>> {
[INFO] [stdout]    |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:41:55
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn future_ok<T: 'static, E: 'static>(d: T) -> Box<Future<Item=T, Error=E>> {
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn future_ok<T: 'static, E: 'static>(d: T) -> Box<dyn Future<Item=T, Error=E>> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:50:56
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn interruptible_future<T: Send + 'static>(ft: Box<Future<Item=T, Error=()>>, on_cancel: Arc<RwLock<Option<CancelHookFt<T>>>>)
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn interruptible_future<T: Send + 'static>(ft: Box<dyn Future<Item=T, Error=()>>, on_cancel: Arc<RwLock<Option<CancelHookFt<T>>>>)
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:51:28
[INFO] [stdout]    |
[INFO] [stdout] 51 |   -> (InterruptSender, Box<Future<Item=Option<T>, Error=()>>)
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 51 |   -> (InterruptSender, Box<dyn Future<Item=Option<T>, Error=()>>)
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:37:60
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn future_error<T: 'static, E: 'static>(err: E) -> Box<Future<Item=T, Error=E>> {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn future_error<T: 'static, E: 'static>(err: E) -> Box<dyn Future<Item=T, Error=E>> {
[INFO] [stdout]    |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:41:55
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn future_ok<T: 'static, E: 'static>(d: T) -> Box<Future<Item=T, Error=E>> {
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn future_ok<T: 'static, E: 'static>(d: T) -> Box<dyn Future<Item=T, Error=E>> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:50:56
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn interruptible_future<T: Send + 'static>(ft: Box<Future<Item=T, Error=()>>, on_cancel: Arc<RwLock<Option<CancelHookFt<T>>>>)
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn interruptible_future<T: Send + 'static>(ft: Box<dyn Future<Item=T, Error=()>>, on_cancel: Arc<RwLock<Option<CancelHookFt<T>>>>)
[INFO] [stdout]    |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:51:28
[INFO] [stdout]    |
[INFO] [stdout] 51 |   -> (InterruptSender, Box<Future<Item=Option<T>, Error=()>>)
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 51 |   -> (InterruptSender, Box<dyn Future<Item=Option<T>, Error=()>>)
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/utils.rs:184:53
[INFO] [stdout]     |
[INFO] [stdout] 184 |   fn fake_callback_ft<T: 'static>(result: T) -> Box<Future<Item=T, Error=()>> {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 184 |   fn fake_callback_ft<T: 'static>(result: T) -> Box<dyn Future<Item=T, Error=()>> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:406:62
[INFO] [stdout]     |
[INFO] [stdout] 406 |   fn fake_timer_ft(timer: &Timer, dur: u64, c: usize) -> Box<Future<Item=usize, Error=()>> {
[INFO] [stdout]     |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 406 |   fn fake_timer_ft(timer: &Timer, dur: u64, c: usize) -> Box<dyn Future<Item=usize, Error=()>> {
[INFO] [stdout]     |                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters in type aliases are not enforced
[INFO] [stdout]    --> src/lib.rs:136:26
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub type CancelHookFt<T: Send + 'static> = Box<Future<Item=T, Error=()>>;
[INFO] [stdout]     |                        --^^^^---^^^^^^^
[INFO] [stdout]     |                        |        |
[INFO] [stdout]     |                        |        will not be checked at usage sites of the type alias
[INFO] [stdout]     |                        help: remove this bound
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is a known limitation of the type checker that may be lifted in a future edition.
[INFO] [stdout]             see issue #112792 <https://github.com/rust-lang/rust/issues/112792> for more information
[INFO] [stdout]     = help: add `#![feature(lazy_type_alias)]` to the crate attributes to enable the desired semantics
[INFO] [stdout]     = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters in type aliases are not enforced
[INFO] [stdout]   --> src/utils.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub type ExitSender<T: Send + 'static> = OneshotSender<Option<T>>;
[INFO] [stdout]    |                      --^^^^---^^^^^^^
[INFO] [stdout]    |                      |        |
[INFO] [stdout]    |                      |        will not be checked at usage sites of the type alias
[INFO] [stdout]    |                      help: remove this bound
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is a known limitation of the type checker that may be lifted in a future edition.
[INFO] [stdout]            see issue #112792 <https://github.com/rust-lang/rust/issues/112792> for more information
[INFO] [stdout]    = help: add `#![feature(lazy_type_alias)]` to the crate attributes to enable the desired semantics
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters in type aliases are not enforced
[INFO] [stdout]    --> src/lib.rs:136:26
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub type CancelHookFt<T: Send + 'static> = Box<Future<Item=T, Error=()>>;
[INFO] [stdout]     |                        --^^^^---^^^^^^^
[INFO] [stdout]     |                        |        |
[INFO] [stdout]     |                        |        will not be checked at usage sites of the type alias
[INFO] [stdout]     |                        help: remove this bound
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is a known limitation of the type checker that may be lifted in a future edition.
[INFO] [stdout]             see issue #112792 <https://github.com/rust-lang/rust/issues/112792> for more information
[INFO] [stdout]     = help: add `#![feature(lazy_type_alias)]` to the crate attributes to enable the desired semantics
[INFO] [stdout]     = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters in type aliases are not enforced
[INFO] [stdout]   --> src/utils.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub type ExitSender<T: Send + 'static> = OneshotSender<Option<T>>;
[INFO] [stdout]    |                      --^^^^---^^^^^^^
[INFO] [stdout]    |                      |        |
[INFO] [stdout]    |                      |        will not be checked at usage sites of the type alias
[INFO] [stdout]    |                      help: remove this bound
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is a known limitation of the type checker that may be lifted in a future edition.
[INFO] [stdout]            see issue #112792 <https://github.com/rust-lang/rust/issues/112792> for more information
[INFO] [stdout]    = help: add `#![feature(lazy_type_alias)]` to the crate attributes to enable the desired semantics
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.29s
[INFO] running `Command { std: "docker" "inspect" "b474be3c83b50e0e1455f03c9a94f6710b1952b7df695578d37a6458b770905d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b474be3c83b50e0e1455f03c9a94f6710b1952b7df695578d37a6458b770905d", kill_on_drop: false }`
[INFO] [stdout] b474be3c83b50e0e1455f03c9a94f6710b1952b7df695578d37a6458b770905d
