[INFO] fetching crate transformable_channels 0.1.1...
[INFO] testing transformable_channels-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate transformable_channels 0.1.1 into /workspace/builds/worker-117/source
[INFO] validating manifest of crates.io crate transformable_channels 0.1.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate transformable_channels 0.1.1
[INFO] finished tweaking crates.io crate transformable_channels 0.1.1
[INFO] tweaked toml for crates.io crate transformable_channels 0.1.1 written to /workspace/builds/worker-117/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] befd318b62c8db7876b23d7bb486692078791904987f62b3f6e03e4bdc06b4b9
[INFO] running `Command { std: "docker" "start" "-a" "befd318b62c8db7876b23d7bb486692078791904987f62b3f6e03e4bdc06b4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "befd318b62c8db7876b23d7bb486692078791904987f62b3f6e03e4bdc06b4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "befd318b62c8db7876b23d7bb486692078791904987f62b3f6e03e4bdc06b4b9", kill_on_drop: false }`
[INFO] [stdout] befd318b62c8db7876b23d7bb486692078791904987f62b3f6e03e4bdc06b4b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5feaa7d4931b3373ffc4129377727c7d57a4d51c304bf48e891352528ead3291
[INFO] running `Command { std: "docker" "start" "-a" "5feaa7d4931b3373ffc4129377727c7d57a4d51c304bf48e891352528ead3291", kill_on_drop: false }`
[INFO] [stderr]    Compiling transformable_channels v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/mpsc.rs:68:37
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn internal_clone(&self) -> Box<ExtSender<T>>;
[INFO] [stdout]    |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:250:30
[INFO] [stdout]     |
[INFO] [stdout] 250 | impl<T> ExtSender<T> for Box<ExtSender<T>> where T: Send + 'static {
[INFO] [stdout]     |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:254:37
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:258:23
[INFO] [stdout]     |
[INFO] [stdout] 258 | impl<T> Clone for Box<ExtSender<T>> where T: Send + 'static {
[INFO] [stdout]     |                       ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:263:40
[INFO] [stdout]     |
[INFO] [stdout] 263 | impl<T> TransformableSender<T> for Box<ExtSender<T>> where T: Send + 'static { }
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:280:37
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:318:37
[INFO] [stdout]     |
[INFO] [stdout] 318 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:369:37
[INFO] [stdout]     |
[INFO] [stdout] 369 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:416:37
[INFO] [stdout]     |
[INFO] [stdout] 416 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:470:37
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn internal_clone(&self) -> Box<ExtSender<(V1, V2)>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<(V1, V2)>`
[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: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "5feaa7d4931b3373ffc4129377727c7d57a4d51c304bf48e891352528ead3291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5feaa7d4931b3373ffc4129377727c7d57a4d51c304bf48e891352528ead3291", kill_on_drop: false }`
[INFO] [stdout] 5feaa7d4931b3373ffc4129377727c7d57a4d51c304bf48e891352528ead3291
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa90e7825f6ecf577a55242c5724a522554b10b62cdc4e56fed55555c7c7bfab
[INFO] running `Command { std: "docker" "start" "-a" "fa90e7825f6ecf577a55242c5724a522554b10b62cdc4e56fed55555c7c7bfab", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/mpsc.rs:68:37
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn internal_clone(&self) -> Box<ExtSender<T>>;
[INFO] [stdout]    |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:250:30
[INFO] [stdout]     |
[INFO] [stdout] 250 | impl<T> ExtSender<T> for Box<ExtSender<T>> where T: Send + 'static {
[INFO] [stdout]     |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:254:37
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:258:23
[INFO] [stdout]     |
[INFO] [stdout] 258 | impl<T> Clone for Box<ExtSender<T>> where T: Send + 'static {
[INFO] [stdout]     |                       ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:263:40
[INFO] [stdout]     |
[INFO] [stdout] 263 | impl<T> TransformableSender<T> for Box<ExtSender<T>> where T: Send + 'static { }
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:280:37
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:318:37
[INFO] [stdout]     |
[INFO] [stdout] 318 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:369:37
[INFO] [stdout]     |
[INFO] [stdout] 369 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:416:37
[INFO] [stdout]     |
[INFO] [stdout] 416 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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] [stderr]    Compiling transformable_channels v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/mpsc.rs:470:37
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn internal_clone(&self) -> Box<ExtSender<(V1, V2)>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<(V1, V2)>`
[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: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/mpsc.rs:68:37
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn internal_clone(&self) -> Box<ExtSender<T>>;
[INFO] [stdout]    |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:250:30
[INFO] [stdout]     |
[INFO] [stdout] 250 | impl<T> ExtSender<T> for Box<ExtSender<T>> where T: Send + 'static {
[INFO] [stdout]     |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:254:37
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:258:23
[INFO] [stdout]     |
[INFO] [stdout] 258 | impl<T> Clone for Box<ExtSender<T>> where T: Send + 'static {
[INFO] [stdout]     |                       ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:263:40
[INFO] [stdout]     |
[INFO] [stdout] 263 | impl<T> TransformableSender<T> for Box<ExtSender<T>> where T: Send + 'static { }
[INFO] [stdout]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:280:37
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:318:37
[INFO] [stdout]     |
[INFO] [stdout] 318 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:369:37
[INFO] [stdout]     |
[INFO] [stdout] 369 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:416:37
[INFO] [stdout]     |
[INFO] [stdout] 416 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[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/mpsc.rs:470:37
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn internal_clone(&self) -> Box<ExtSender<(V1, V2)>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<(V1, V2)>`
[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: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "fa90e7825f6ecf577a55242c5724a522554b10b62cdc4e56fed55555c7c7bfab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa90e7825f6ecf577a55242c5724a522554b10b62cdc4e56fed55555c7c7bfab", kill_on_drop: false }`
[INFO] [stdout] fa90e7825f6ecf577a55242c5724a522554b10b62cdc4e56fed55555c7c7bfab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a7431aa00d582bf0a999e8ebec09e6d5f4f6599ca2753e051b06608005d5c322
[INFO] running `Command { std: "docker" "start" "-a" "a7431aa00d582bf0a999e8ebec09e6d5f4f6599ca2753e051b06608005d5c322", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mpsc.rs:68:37
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn internal_clone(&self) -> Box<ExtSender<T>>;
[INFO] [stderr]    |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) 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] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mpsc.rs:250:30
[INFO] [stderr]     |
[INFO] [stderr] 250 | impl<T> ExtSender<T> for Box<ExtSender<T>> where T: Send + 'static {
[INFO] [stderr]     |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mpsc.rs:254:37
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mpsc.rs:258:23
[INFO] [stderr]     |
[INFO] [stderr] 258 | impl<T> Clone for Box<ExtSender<T>> where T: Send + 'static {
[INFO] [stderr]     |                       ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mpsc.rs:263:40
[INFO] [stderr]     |
[INFO] [stderr] 263 | impl<T> TransformableSender<T> for Box<ExtSender<T>> where T: Send + 'static { }
[INFO] [stderr]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mpsc.rs:280:37
[INFO] [stderr]     |
[INFO] [stderr] 280 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mpsc.rs:318:37
[INFO] [stderr]     |
[INFO] [stderr] 318 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mpsc.rs:369:37
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mpsc.rs:416:37
[INFO] [stderr]     |
[INFO] [stderr] 416 |     fn internal_clone(&self) -> Box<ExtSender<T>> {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<T>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mpsc.rs:470:37
[INFO] [stderr]     |
[INFO] [stderr] 470 |     fn internal_clone(&self) -> Box<ExtSender<(V1, V2)>> {
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ExtSender<(V1, V2)>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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] 
[INFO] [stderr] warning: `transformable_channels` (lib) generated 10 warnings
[INFO] [stderr] warning: `transformable_channels` (lib test) generated 10 warnings (10 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/transformable_channels-1a0c56e51989c4d3)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests transformable_channels
[INFO] [stdout] running 2 tests
[INFO] [stdout] test mpsc::test_chain_map ... ok
[INFO] [stdout] test mpsc::test_filter_map ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/mpsc.rs - mpsc::TransformableSender::map (line 87) ... ok
[INFO] [stdout] test src/mpsc.rs - mpsc::TransformableSender::filter_map (line 185) ... ok
[INFO] [stdout] test src/mpsc.rs - mpsc::TransformableSender::filter (line 142) ... ok
[INFO] [stdout] test src/mpsc.rs - mpsc::channel (line 27) ... ok
[INFO] [stdout] test src/mpsc.rs - mpsc::TransformableSender::tie (line 223) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.10s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a7431aa00d582bf0a999e8ebec09e6d5f4f6599ca2753e051b06608005d5c322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7431aa00d582bf0a999e8ebec09e6d5f4f6599ca2753e051b06608005d5c322", kill_on_drop: false }`
[INFO] [stdout] a7431aa00d582bf0a999e8ebec09e6d5f4f6599ca2753e051b06608005d5c322