[INFO] fetching crate stream_multiplexer 0.16.1... [INFO] testing stream_multiplexer-0.16.1 against beta-2022-04-10 for beta-1.61-1 [INFO] extracting crate stream_multiplexer 0.16.1 into /workspace/builds/worker-3/source [INFO] validating manifest of crates.io crate stream_multiplexer 0.16.1 on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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-3/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 7cab3a9dd04fd534831db22bacd0a3401e91781880ae2036b63ff91424fbf2e0 [INFO] running `Command { std: "docker" "start" "-a" "7cab3a9dd04fd534831db22bacd0a3401e91781880ae2036b63ff91424fbf2e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7cab3a9dd04fd534831db22bacd0a3401e91781880ae2036b63ff91424fbf2e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7cab3a9dd04fd534831db22bacd0a3401e91781880ae2036b63ff91424fbf2e0", kill_on_drop: false }` [INFO] [stdout] 7cab3a9dd04fd534831db22bacd0a3401e91781880ae2036b63ff91424fbf2e0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 83922159d29f742f44489327a06c4dd14daca0582edc7fc5ce1922dca9063975 [INFO] running `Command { std: "docker" "start" "-a" "83922159d29f742f44489327a06c4dd14daca0582edc7fc5ce1922dca9063975", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Compiling sharded-slab v0.0.9 [INFO] [stderr] Compiling parking_lot_core v0.8.5 [INFO] [stderr] Compiling dashmap v4.0.2 [INFO] [stderr] Compiling parking_lot v0.11.2 [INFO] [stderr] Compiling stream_multiplexer v0.16.1 (/opt/rustwide/workdir) [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>, async_mutex::Mutex>)>>` [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] 343 | log::debug!("recv({}) before loop {{}}", channel_id); [INFO] [stdout] 344 | let mut channel = channel_guard.value().1.lock().await; [INFO] [stdout] 345 | loop { [INFO] [stdout] 346 | log::debug!("recv({}) awaiting the select", channel_id); [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 enum `Option` [INFO] [stdout] | [INFO] [stdout] = note: expected type `bool` [INFO] [stdout] found enum `Option<(usize, (async_channel::Sender>, async_mutex::Mutex>))>` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0308, 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` due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "83922159d29f742f44489327a06c4dd14daca0582edc7fc5ce1922dca9063975", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "83922159d29f742f44489327a06c4dd14daca0582edc7fc5ce1922dca9063975", kill_on_drop: false }` [INFO] [stdout] 83922159d29f742f44489327a06c4dd14daca0582edc7fc5ce1922dca9063975