[INFO] fetching crate generic-session-types 0.1.0...
[INFO] testing generic-session-types-0.1.0 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate generic-session-types 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate generic-session-types 0.1.0 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate generic-session-types 0.1.0
[INFO] finished tweaking crates.io crate generic-session-types 0.1.0
[INFO] tweaked toml for crates.io crate generic-session-types 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a880b30e755b86da21d8baaad81be3d94e72ec1485b2693b449bc1b78d248515
[INFO] running `Command { std: "docker" "start" "-a" "a880b30e755b86da21d8baaad81be3d94e72ec1485b2693b449bc1b78d248515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a880b30e755b86da21d8baaad81be3d94e72ec1485b2693b449bc1b78d248515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a880b30e755b86da21d8baaad81be3d94e72ec1485b2693b449bc1b78d248515", kill_on_drop: false }`
[INFO] [stdout] a880b30e755b86da21d8baaad81be3d94e72ec1485b2693b449bc1b78d248515
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 363f55c89fcdd79e0b9600e0c40f3c106d587cbc0f336ae4448fd508662584b0
[INFO] running `Command { std: "docker" "start" "-a" "363f55c89fcdd79e0b9600e0c40f3c106d587cbc0f336ae4448fd508662584b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling tokio v1.28.0
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling mio v0.8.6
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling socket2 v0.4.9
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling generic-session-types v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]   --> src/chan/mpsc.rs:13:27
[INFO] [stdout]    |
[INFO] [stdout] 13 |     type SendFuture<'a> = impl Future<Output = Result<(), Error>> + 'a
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]   --> src/chan/mpsc.rs:23:27
[INFO] [stdout]    |
[INFO] [stdout] 23 |     type RecvFuture<'a> = impl Future<Output = Result<R, Error>>  + 'a where Self: 'a;
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable
[INFO] [stdout]   --> src/chan/mpsc.rs:31:24
[INFO] [stdout]    |
[INFO] [stdout] 31 |     type CloseFuture = impl Future<Output = Result<(), Error>> + 'static;
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `generic-session-types` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "363f55c89fcdd79e0b9600e0c40f3c106d587cbc0f336ae4448fd508662584b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "363f55c89fcdd79e0b9600e0c40f3c106d587cbc0f336ae4448fd508662584b0", kill_on_drop: false }`
[INFO] [stdout] 363f55c89fcdd79e0b9600e0c40f3c106d587cbc0f336ae4448fd508662584b0
