[INFO] fetching crate coroutines 0.2.0...
[INFO] checking coroutines-0.2.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate coroutines 0.2.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate coroutines 0.2.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate coroutines 0.2.0
[INFO] finished tweaking crates.io crate coroutines 0.2.0
[INFO] tweaked toml for crates.io crate coroutines 0.2.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 383849cafa03e8d4d489bc84780f4c06833a6df66fbeaa90b22cb7a0b6dc1d9c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "383849cafa03e8d4d489bc84780f4c06833a6df66fbeaa90b22cb7a0b6dc1d9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "383849cafa03e8d4d489bc84780f4c06833a6df66fbeaa90b22cb7a0b6dc1d9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "383849cafa03e8d4d489bc84780f4c06833a6df66fbeaa90b22cb7a0b6dc1d9c", kill_on_drop: false }`
[INFO] [stdout] 383849cafa03e8d4d489bc84780f4c06833a6df66fbeaa90b22cb7a0b6dc1d9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bc10b67bf32f245f46087b2aa7ac7065af761aba5278744a03a0d737c4e5189
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3bc10b67bf32f245f46087b2aa7ac7065af761aba5278744a03a0d737c4e5189", kill_on_drop: false }`
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]     Checking coroutines v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:61:29
[INFO] [stdout]    |
[INFO] [stdout] 61 |     E: FnOnce(Result<T, Box<Any + Send>>) + Send + 'static
[INFO] [stdout]    |                             ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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/lib.rs:70:29
[INFO] [stdout]    |
[INFO] [stdout] 70 |     E: FnOnce(Result<T, Box<Any + Send>>) + Send + 'static
[INFO] [stdout]    |                             ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:83:29
[INFO] [stdout]    |
[INFO] [stdout] 83 |     E: FnOnce(Result<T, Box<Any + Send>>) + Send + 'static
[INFO] [stdout]    |                             ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:123:40
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn join(self) -> Result<T, Box<Any + Send>> {
[INFO] [stdout]     |                                        ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:143:24
[INFO] [stdout]     |
[INFO] [stdout] 143 |     Done(Result<T, Box<Any + Send>>),
[INFO] [stdout]     |                        ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:144:35
[INFO] [stdout]     |
[INFO] [stdout] 144 |     Pending(Promise<Result<T, Box<Any + Send>>>)
[INFO] [stdout]     |                                   ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:162:62
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let mut resolve_target: Option<Promise<Result<T, Box<Any + Send>>>> = None;
[INFO] [stdout]     |                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:61:29
[INFO] [stdout]    |
[INFO] [stdout] 61 |     E: FnOnce(Result<T, Box<Any + Send>>) + Send + 'static
[INFO] [stdout]    |                             ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:70:29
[INFO] [stdout]    |
[INFO] [stdout] 70 |     E: FnOnce(Result<T, Box<Any + Send>>) + Send + 'static
[INFO] [stdout]    |                             ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:83:29
[INFO] [stdout]    |
[INFO] [stdout] 83 |     E: FnOnce(Result<T, Box<Any + Send>>) + Send + 'static
[INFO] [stdout]    |                             ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:123:40
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn join(self) -> Result<T, Box<Any + Send>> {
[INFO] [stdout]     |                                        ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:143:24
[INFO] [stdout]     |
[INFO] [stdout] 143 |     Done(Result<T, Box<Any + Send>>),
[INFO] [stdout]     |                        ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:144:35
[INFO] [stdout]     |
[INFO] [stdout] 144 |     Pending(Promise<Result<T, Box<Any + Send>>>)
[INFO] [stdout]     |                                   ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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:162:62
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let mut resolve_target: Option<Promise<Result<T, Box<Any + Send>>>> = None;
[INFO] [stdout]     |                                                              ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "3bc10b67bf32f245f46087b2aa7ac7065af761aba5278744a03a0d737c4e5189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bc10b67bf32f245f46087b2aa7ac7065af761aba5278744a03a0d737c4e5189", kill_on_drop: false }`
[INFO] [stdout] 3bc10b67bf32f245f46087b2aa7ac7065af761aba5278744a03a0d737c4e5189