[INFO] fetching crate stream_multiplexer 0.16.1...
[INFO] checking stream_multiplexer-0.16.1 against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] extracting crate stream_multiplexer 0.16.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate stream_multiplexer 0.16.1
[INFO] finished tweaking crates.io crate stream_multiplexer 0.16.1
[INFO] tweaked toml for crates.io crate stream_multiplexer 0.16.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stream_multiplexer 0.16.1 on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "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 alto_logger v0.3.7 (available: v0.4.0)
[INFO] [stderr]       Adding async-channel v1.9.0 (available: v2.5.0)
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[INFO] [stderr]       Adding dashmap v4.0.2 (available: v6.1.0)
[INFO] [stderr]       Adding parking_lot v0.11.2 (available: v0.12.4)
[INFO] [stderr]       Adding pin-project-lite v0.1.12 (available: v0.2.16)
[INFO] [stderr]       Adding sharded-slab v0.0.9 (available: v0.1.7)
[INFO] [stderr]       Adding smol v0.3.3 (available: v2.0.2)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.16)
[INFO] [stderr]       Adding tokio-util v0.3.1 (available: v0.7.16)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce18ef8aae73a88ac45105073eef09d61f15c1ad31070dc2388b8dd1fbb42056
[INFO] running `Command { std: "docker" "start" "-a" "ce18ef8aae73a88ac45105073eef09d61f15c1ad31070dc2388b8dd1fbb42056", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce18ef8aae73a88ac45105073eef09d61f15c1ad31070dc2388b8dd1fbb42056", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce18ef8aae73a88ac45105073eef09d61f15c1ad31070dc2388b8dd1fbb42056", kill_on_drop: false }`
[INFO] [stdout] ce18ef8aae73a88ac45105073eef09d61f15c1ad31070dc2388b8dd1fbb42056
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 784778df5f6ab9256fbe813cb7089d601aa89fcbbac39a5d760e1a36a18c89ef
[INFO] running `Command { std: "docker" "start" "-a" "784778df5f6ab9256fbe813cb7089d601aa89fcbbac39a5d760e1a36a18c89ef", kill_on_drop: false }`
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[INFO] [stderr]     Checking stream_multiplexer v0.16.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0453]: warn(unsafe_code) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 78 | #![forbid(unsafe_code)]
[INFO] [stdout]    |           ----------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 86 |     unsafe_code,
[INFO] [stdout]    |     ^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: warn(unsafe_code) incompatible with previous forbid
[INFO] [stdout]   --> src/lib.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 78 | #![forbid(unsafe_code)]
[INFO] [stdout]    |           ----------- `forbid` level set here
[INFO] [stdout] ...
[INFO] [stdout] 86 |     unsafe_code,
[INFO] [stdout]    |     ^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/lib.rs:355:33
[INFO] [stdout]     |
[INFO] [stdout] 341 |         match self.channels.get(&channel_id) {
[INFO] [stdout]     |               ------------------------------
[INFO] [stdout]     |               |
[INFO] [stdout]     |               immutable borrow occurs here
[INFO] [stdout]     |               a temporary with access to the immutable borrow is created here ...
[INFO] [stdout] ...
[INFO] [stdout] 355 |                                 self.process_add_channel(add_res)?;
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 363 |     }
[INFO] [stdout]     |     - ... and the immutable borrow might be used here, when that temporary is dropped and runs the destructor for type `Option<dashmap::mapref::one::Ref<'_, usize, (async_channel::Sender<stream_dropper::StreamDropper<St>>, async_mutex::Mutex<Channel<St>>)>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the temporary is part of an expression at the end of a block;
[INFO] [stdout]             consider forcing this temporary to be dropped sooner, before the block's local variables are dropped
[INFO] [stdout] help: for example, you could save the expression's value in a new local variable `x` and then make `x` be the expression at the end of the block
[INFO] [stdout]     |
[INFO] [stdout] 341 ~         let x = match self.channels.get(&channel_id) {
[INFO] [stdout] 342 |             Some(channel_guard) => {
[INFO] [stdout] ...
[INFO] [stdout] 361 |             None => Err(MultiplexerError::UnknownChannel(channel_id)),
[INFO] [stdout] 362 ~         }; x
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:208:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |     pub fn remove_channel(&mut self, channel: ChannelId) -> bool {
[INFO] [stdout]     |                                                             ---- expected `bool` because of return type
[INFO] [stdout] 207 |         // FIXME: What do we do with the sockets in that channel?
[INFO] [stdout] 208 |         self.channels.remove(&channel)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Option<(usize, (Sender<...>, ...))>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type `bool`
[INFO] [stdout]                found enum `Option<(usize, (async_channel::Sender<stream_dropper::StreamDropper<St>>, async_mutex::Mutex<Channel<St>>))>`
[INFO] [stdout] help: use `Option::is_some` to test if the `Option` has a value
[INFO] [stdout]     |
[INFO] [stdout] 208 |         self.channels.remove(&channel).is_some()
[INFO] [stdout]     |                                       ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/lib.rs:355:33
[INFO] [stdout]     |
[INFO] [stdout] 341 |         match self.channels.get(&channel_id) {
[INFO] [stdout]     |               ------------------------------
[INFO] [stdout]     |               |
[INFO] [stdout]     |               immutable borrow occurs here
[INFO] [stdout]     |               a temporary with access to the immutable borrow is created here ...
[INFO] [stdout] ...
[INFO] [stdout] 355 |                                 self.process_add_channel(add_res)?;
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 363 |     }
[INFO] [stdout]     |     - ... and the immutable borrow might be used here, when that temporary is dropped and runs the destructor for type `Option<dashmap::mapref::one::Ref<'_, usize, (async_channel::Sender<stream_dropper::StreamDropper<St>>, async_mutex::Mutex<Channel<St>>)>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the temporary is part of an expression at the end of a block;
[INFO] [stdout]             consider forcing this temporary to be dropped sooner, before the block's local variables are dropped
[INFO] [stdout] help: for example, you could save the expression's value in a new local variable `x` and then make `x` be the expression at the end of the block
[INFO] [stdout]     |
[INFO] [stdout] 341 ~         let x = match self.channels.get(&channel_id) {
[INFO] [stdout] 342 |             Some(channel_guard) => {
[INFO] [stdout] ...
[INFO] [stdout] 361 |             None => Err(MultiplexerError::UnknownChannel(channel_id)),
[INFO] [stdout] 362 ~         }; x
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0453, E0502.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:208:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |     pub fn remove_channel(&mut self, channel: ChannelId) -> bool {
[INFO] [stdout]     |                                                             ---- expected `bool` because of return type
[INFO] [stdout] 207 |         // FIXME: What do we do with the sockets in that channel?
[INFO] [stdout] 208 |         self.channels.remove(&channel)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Option<(usize, (Sender<...>, ...))>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type `bool`
[INFO] [stdout]                found enum `Option<(usize, (async_channel::Sender<stream_dropper::StreamDropper<St>>, async_mutex::Mutex<Channel<St>>))>`
[INFO] [stdout] help: use `Option::is_some` to test if the `Option` has a value
[INFO] [stdout]     |
[INFO] [stdout] 208 |         self.channels.remove(&channel).is_some()
[INFO] [stdout]     |                                       ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0453, E0502.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stream_multiplexer` (lib test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `stream_multiplexer` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "784778df5f6ab9256fbe813cb7089d601aa89fcbbac39a5d760e1a36a18c89ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "784778df5f6ab9256fbe813cb7089d601aa89fcbbac39a5d760e1a36a18c89ef", kill_on_drop: false }`
[INFO] [stdout] 784778df5f6ab9256fbe813cb7089d601aa89fcbbac39a5d760e1a36a18c89ef
