[INFO] fetching crate wombo 0.1.2...
[INFO] checking wombo-0.1.2 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate wombo 0.1.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate wombo 0.1.2 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a600e7cce9aeeeff6458ab743d09a5ddef05e0164c316f784a0fa54843169a6
[INFO] running `Command { std: "docker" "start" "-a" "0a600e7cce9aeeeff6458ab743d09a5ddef05e0164c316f784a0fa54843169a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a600e7cce9aeeeff6458ab743d09a5ddef05e0164c316f784a0fa54843169a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a600e7cce9aeeeff6458ab743d09a5ddef05e0164c316f784a0fa54843169a6", kill_on_drop: false }`
[INFO] [stdout] 0a600e7cce9aeeeff6458ab743d09a5ddef05e0164c316f784a0fa54843169a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58e836bf9869400493c73505971d81b609d3ef893a3eef019bac86425f632000
[INFO] running `Command { std: "docker" "start" "-a" "58e836bf9869400493c73505971d81b609d3ef893a3eef019bac86425f632000", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking env_logger v0.4.3
[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 pretty_env_logger v0.1.1
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]     Checking wombo v0.1.2 (/opt/rustwide/workdir)
[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]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T, Error=E>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T, Error=E>`
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T, Error=()>`
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=Option<T>, Error=()>`
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T, Error=()>`
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T, Error=()>`
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=usize, Error=()>`
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T, Error=E>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]    |                                                       ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T, Error=E>`
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T, Error=()>`
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=Option<T>, Error=()>`
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item=T, Error=()>`
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[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]     = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]     |
[INFO] [stdout] 136 - pub type CancelHookFt<T: Send + 'static> = Box<Future<Item=T, Error=()>>;
[INFO] [stdout] 136 + pub type CancelHookFt<T> = Box<Future<Item=T, Error=()>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[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] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 33 - pub type ExitSender<T: Send + 'static> = OneshotSender<Option<T>>;
[INFO] [stdout] 33 + pub type ExitSender<T> = OneshotSender<Option<T>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[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]     = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]     |
[INFO] [stdout] 136 - pub type CancelHookFt<T: Send + 'static> = Box<Future<Item=T, Error=()>>;
[INFO] [stdout] 136 + pub type CancelHookFt<T> = Box<Future<Item=T, Error=()>>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters are not enforced in type aliases
[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] help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stdout]    |
[INFO] [stdout] 33 - pub type ExitSender<T: Send + 'static> = OneshotSender<Option<T>>;
[INFO] [stdout] 33 + pub type ExitSender<T> = OneshotSender<Option<T>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.27s
[INFO] running `Command { std: "docker" "inspect" "58e836bf9869400493c73505971d81b609d3ef893a3eef019bac86425f632000", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58e836bf9869400493c73505971d81b609d3ef893a3eef019bac86425f632000", kill_on_drop: false }`
[INFO] [stdout] 58e836bf9869400493c73505971d81b609d3ef893a3eef019bac86425f632000