[INFO] fetching crate areq-tokio 0.1.0-alpha5...
[INFO] checking areq-tokio-0.1.0-alpha5 against 1.95.0 for pr-155915
[INFO] extracting crate areq-tokio 0.1.0-alpha5 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate areq-tokio 0.1.0-alpha5
[INFO] finished tweaking crates.io crate areq-tokio 0.1.0-alpha5
[INFO] tweaked toml for crates.io crate areq-tokio 0.1.0-alpha5 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate areq-tokio 0.1.0-alpha5 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate areq-tokio 0.1.0-alpha5 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded areq-body v0.1.0-alpha5
[INFO] [stderr]   Downloaded areq-h1 v0.1.0-alpha5
[INFO] [stderr]   Downloaded areq v0.1.0-alpha5
[INFO] [stderr]   Downloaded aws-lc-rs v1.12.4
[INFO] [stderr]   Downloaded h2 v0.4.8
[INFO] [stderr]   Downloaded aws-lc-sys v0.26.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 463ffe888c630d86202ac91a7c27587515e2c2c94f0993fd97df45655ca65f3a
[INFO] running `Command { std: "docker" "start" "-a" "463ffe888c630d86202ac91a7c27587515e2c2c94f0993fd97df45655ca65f3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "463ffe888c630d86202ac91a7c27587515e2c2c94f0993fd97df45655ca65f3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "463ffe888c630d86202ac91a7c27587515e2c2c94f0993fd97df45655ca65f3a", kill_on_drop: false }`
[INFO] [stdout] 463ffe888c630d86202ac91a7c27587515e2c2c94f0993fd97df45655ca65f3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6072d61028a28ff930d200caacbeb742c4cfd2ca41b7b19676f5088071b30399
[INFO] running `Command { std: "docker" "start" "-a" "6072d61028a28ff930d200caacbeb742c4cfd2ca41b7b19676f5088071b30399", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.170
[INFO] [stderr]     Checking smallvec v1.14.0
[INFO] [stderr]     Checking fastrand v2.3.0
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]     Checking futures-lite v2.6.0
[INFO] [stderr]     Checking socket2 v0.5.8
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]     Checking areq-body v0.1.0-alpha5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/areq-body-0.1.0-alpha5/src/lib.rs:2:30
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "rtn", feature(return_type_notation))]
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `areq-body` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6072d61028a28ff930d200caacbeb742c4cfd2ca41b7b19676f5088071b30399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6072d61028a28ff930d200caacbeb742c4cfd2ca41b7b19676f5088071b30399", kill_on_drop: false }`
[INFO] [stdout] 6072d61028a28ff930d200caacbeb742c4cfd2ca41b7b19676f5088071b30399