[INFO] fetching crate cachy 0.2.0...
[INFO] testing cachy-0.2.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate cachy 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate cachy 0.2.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cachy 0.2.0
[INFO] finished tweaking crates.io crate cachy 0.2.0
[INFO] tweaked toml for crates.io crate cachy 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-option v0.1.2
[INFO] [stderr]   Downloaded parking_lot_core v0.2.14
[INFO] [stderr]   Downloaded bus v1.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0dc77213bd67761268e4d779114995dc0d007a88232afe10788585e0898aa6a0
[INFO] running `Command { std: "docker" "start" "-a" "0dc77213bd67761268e4d779114995dc0d007a88232afe10788585e0898aa6a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0dc77213bd67761268e4d779114995dc0d007a88232afe10788585e0898aa6a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dc77213bd67761268e4d779114995dc0d007a88232afe10788585e0898aa6a0", kill_on_drop: false }`
[INFO] [stdout] 0dc77213bd67761268e4d779114995dc0d007a88232afe10788585e0898aa6a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8bc61dacc69b96700dcc261d6af8e966c83e8e0235bbd5349f996192687c1ae
[INFO] running `Command { std: "docker" "start" "-a" "b8bc61dacc69b96700dcc261d6af8e966c83e8e0235bbd5349f996192687c1ae", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling atomic-option v0.1.2
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling bus v1.4.1
[INFO] [stderr]    Compiling cachy v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: the method `try_recv` exists for mutable reference `&mut BusReader<Arc<R>>`, but its trait bounds were not satisfied
[INFO] [stdout]   --> src/lib.rs:85:28
[INFO] [stdout]    |
[INFO] [stdout] 85 |               res = match sc.try_recv() {
[INFO] [stdout]    |                              ^^^^^^^^ method cannot be called on `&mut BusReader<Arc<R>>` due to unsatisfied trait bounds
[INFO] [stdout]   --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/sync.rs:248:1
[INFO] [stdout]   ::: /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/sync.rs:251:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: doesn't satisfy `Arc<R>: Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `Arc<R>: Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `try_recv` exists for mutable reference `&mut BusReader<Arc<R>>`, but its trait bounds were not satisfied
[INFO] [stdout]    --> src/lib.rs:148:95
[INFO] [stdout]     |
[INFO] [stdout] 148 |           let temp = itc.into_iter().filter_map(|(k, mut x)| match Rc::get_mut(&mut x).unwrap().try_recv() {
[INFO] [stdout]     |                                                                                                 ^^^^^^^^ method cannot be called on `&mut BusReader<Arc<R>>` due to unsatisfied trait bounds
[INFO] [stdout]    --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/sync.rs:248:1
[INFO] [stdout]    ::: /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/sync.rs:251:1
[INFO] [stdout]     |
[INFO] [stdout]     = note: doesn't satisfy `Arc<R>: Sync`
[INFO] [stdout]     |
[INFO] [stdout]     = note: the following trait bounds were not satisfied:
[INFO] [stdout]             `Arc<R>: Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cachy` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b8bc61dacc69b96700dcc261d6af8e966c83e8e0235bbd5349f996192687c1ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8bc61dacc69b96700dcc261d6af8e966c83e8e0235bbd5349f996192687c1ae", kill_on_drop: false }`
[INFO] [stdout] b8bc61dacc69b96700dcc261d6af8e966c83e8e0235bbd5349f996192687c1ae
