[INFO] fetching crate msg_channel 0.1.0-beat.3...
[INFO] testing msg_channel-0.1.0-beat.3 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate msg_channel 0.1.0-beat.3 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate msg_channel 0.1.0-beat.3
[INFO] finished tweaking crates.io crate msg_channel 0.1.0-beat.3
[INFO] tweaked toml for crates.io crate msg_channel 0.1.0-beat.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate msg_channel 0.1.0-beat.3 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate msg_channel 0.1.0-beat.3 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] 1cae762cdff0ab719ef0fe2ba0731712afc61c303c5d5f2cc5440423f9f24f46
[INFO] running `Command { std: "docker" "start" "-a" "1cae762cdff0ab719ef0fe2ba0731712afc61c303c5d5f2cc5440423f9f24f46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cae762cdff0ab719ef0fe2ba0731712afc61c303c5d5f2cc5440423f9f24f46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cae762cdff0ab719ef0fe2ba0731712afc61c303c5d5f2cc5440423f9f24f46", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f8849d6db9cfb2a2bdde261dc7e17b329c13828c21b80bf394576825edf1a19
[INFO] running `Command { std: "docker" "start" "-a" "5f8849d6db9cfb2a2bdde261dc7e17b329c13828c21b80bf394576825edf1a19", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling autocfg v1.2.0
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[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling futures-core v0.3.30
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[INFO] [stderr]    Compiling smallvec v1.13.2
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[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling msg_channel_macro v0.1.0-beat.3
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling msg_channel_core v0.1.0-beat.3
[INFO] [stderr]    Compiling msg_channel v0.1.0-beat.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.60s
[INFO] running `Command { std: "docker" "inspect" "5f8849d6db9cfb2a2bdde261dc7e17b329c13828c21b80bf394576825edf1a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f8849d6db9cfb2a2bdde261dc7e17b329c13828c21b80bf394576825edf1a19", kill_on_drop: false }`
[INFO] [stdout] 5f8849d6db9cfb2a2bdde261dc7e17b329c13828c21b80bf394576825edf1a19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 991ae16b8d4959b92511ad08d672bbb016e257db352ad615998988d4a2a71904
[INFO] running `Command { std: "docker" "start" "-a" "991ae16b8d4959b92511ad08d672bbb016e257db352ad615998988d4a2a71904", kill_on_drop: false }`
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[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling once_cell v1.19.0
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[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling owo-colors v3.5.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]    Compiling indenter v0.3.3
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[INFO] [stderr]    Compiling socket2 v0.5.6
[INFO] [stderr]    Compiling parking_lot v0.12.1
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[INFO] [stderr]    Compiling tokio v1.37.0
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[INFO] [stderr]    Compiling msg_channel_core v0.1.0-beat.3
[INFO] [stderr]    Compiling msg_channel v0.1.0-beat.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `MsgHandler: msg_channel::HandleReplay<msg_channel::MessageSetItem<TestMsgSet>>` is not satisfied
[INFO] [stdout]    --> examples/playground.rs:122:24
[INFO] [stdout]     |
[INFO] [stdout] 122 |         Ok(self.x.send(_msg.0)?.await)
[INFO] [stdout]     |                   ---- ^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `msg_channel::HandleReplay<msg_channel::MessageSetItem<TestMsgSet>>` is not implemented for `MsgHandler`
[INFO] [stdout]    --> examples/playground.rs:9:1
[INFO] [stdout]     |
[INFO] [stdout]   9 | pub struct MsgHandler;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: the following other types implement trait `msg_channel::HandleReplay<M>`:
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncConcurrentMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncConcurrentMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncMsg>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncConcurrentMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncConcurrentMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<TestMsgSetAsyncConcurrentVariant>`
[INFO] [stdout]             and 3 others
[INFO] [stdout] note: required by a bound in `msg_channel::MessageSetSender::<MS>::send`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/msg_channel_core-0.1.0-beat.3/src/message_set.rs:81:22
[INFO] [stdout]     |
[INFO] [stdout]  69 |     pub fn send<M>(
[INFO] [stdout]     |            ---- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout]  81 |         MS::Handler: HandleReplay<M>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^ required by this bound in `MessageSetSender::<MS>::send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MsgHandler: msg_channel::HandleReplay<msg_channel::MessageSetItem<TestMsgSet>>` is not satisfied
[INFO] [stdout]    --> examples/playground.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 |         Ok(self.x.send(_msg.0)?.await)
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `msg_channel::HandleReplay<msg_channel::MessageSetItem<TestMsgSet>>` is not implemented for `MsgHandler`
[INFO] [stdout]    --> examples/playground.rs:9:1
[INFO] [stdout]     |
[INFO] [stdout]   9 | pub struct MsgHandler;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: the following other types implement trait `msg_channel::HandleReplay<M>`:
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncConcurrentMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncConcurrentMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncMsg>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncConcurrentMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncConcurrentMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<TestMsgSetAsyncConcurrentVariant>`
[INFO] [stdout]             and 3 others
[INFO] [stdout] note: required by a bound in `msg_channel::MessageSetSender::<MS>::send`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/msg_channel_core-0.1.0-beat.3/src/message_set.rs:81:22
[INFO] [stdout]     |
[INFO] [stdout]  69 |     pub fn send<M>(
[INFO] [stdout]     |            ---- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout]  81 |         MS::Handler: HandleReplay<M>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^ required by this bound in `MessageSetSender::<MS>::send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MsgHandler: msg_channel::HandleReplay<msg_channel::MessageSetItem<TestMsgSet>>` is not satisfied
[INFO] [stdout]    --> examples/playground.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 |         Ok(self.x.send(_msg.0)?.await)
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `msg_channel::HandleReplay<msg_channel::MessageSetItem<TestMsgSet>>` is not implemented for `MsgHandler`
[INFO] [stdout]    --> examples/playground.rs:9:1
[INFO] [stdout]     |
[INFO] [stdout]   9 | pub struct MsgHandler;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: the following other types implement trait `msg_channel::HandleReplay<M>`:
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncConcurrentMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncConcurrentMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncMsg>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncConcurrentMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncConcurrentMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<TestMsgSetAsyncConcurrentVariant>`
[INFO] [stdout]             and 3 others
[INFO] [stdout] note: required by a bound in `msg_channel::MessageSetSender::<MS>::send`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/msg_channel_core-0.1.0-beat.3/src/message_set.rs:81:22
[INFO] [stdout]     |
[INFO] [stdout]  69 |     pub fn send<M>(
[INFO] [stdout]     |            ---- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout]  81 |         MS::Handler: HandleReplay<M>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^ required by this bound in `MessageSetSender::<MS>::send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MsgHandler: msg_channel::HandleReplay<msg_channel::MessageSetItem<TestMsgSet>>` is not satisfied
[INFO] [stdout]    --> examples/playground.rs:122:33
[INFO] [stdout]     |
[INFO] [stdout] 122 |         Ok(self.x.send(_msg.0)?.await)
[INFO] [stdout]     |                                 ^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `msg_channel::HandleReplay<msg_channel::MessageSetItem<TestMsgSet>>` is not implemented for `MsgHandler`
[INFO] [stdout]    --> examples/playground.rs:9:1
[INFO] [stdout]     |
[INFO] [stdout]   9 | pub struct MsgHandler;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: the following other types implement trait `msg_channel::HandleReplay<M>`:
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncConcurrentMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncConcurrentMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<AsyncMsg>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncConcurrentMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncConcurrentMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncMsgA>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<SyncMsgB>`
[INFO] [stdout]               `MsgHandler` implements `msg_channel::HandleReplay<TestMsgSetAsyncConcurrentVariant>`
[INFO] [stdout]             and 3 others
[INFO] [stdout] note: required by a bound in `msg_channel::MessageSetSender::<MS>::send`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/msg_channel_core-0.1.0-beat.3/src/message_set.rs:81:22
[INFO] [stdout]     |
[INFO] [stdout]  69 |     pub fn send<M>(
[INFO] [stdout]     |            ---- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout]  81 |         MS::Handler: HandleReplay<M>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^ required by this bound in `MessageSetSender::<MS>::send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::future::Future`
[INFO] [stdout]  --> examples/playground.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::future::Future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `msg_channel` (example "playground") due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "991ae16b8d4959b92511ad08d672bbb016e257db352ad615998988d4a2a71904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "991ae16b8d4959b92511ad08d672bbb016e257db352ad615998988d4a2a71904", kill_on_drop: false }`
[INFO] [stdout] 991ae16b8d4959b92511ad08d672bbb016e257db352ad615998988d4a2a71904
