[INFO] fetching crate d9d_p2p 0.1.0...
[INFO] testing d9d_p2p-0.1.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate d9d_p2p 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate d9d_p2p 0.1.0
[INFO] finished tweaking crates.io crate d9d_p2p 0.1.0
[INFO] tweaked toml for crates.io crate d9d_p2p 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate d9d_p2p 0.1.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "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" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 114 packages to highest compatible versions
[INFO] [stderr]       Adding base64 v0.10.1 (available: v0.23.1)
[INFO] [stderr]       Adding bytes v0.4.12 (available: v1.12.1)
[INFO] [stderr]       Adding env_logger v0.6.2 (available: v0.11.11)
[INFO] [stderr]       Adding futures-channel-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-core-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-executor-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-io-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-join-macro-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-select-macro-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-sink-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-util-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.10.3)
[INFO] [stderr]       Adding tokio v0.1.22 (available: v1.53.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d2c332b412aaf5a6287f917c035024fd5397c5d298fc0839ad93999bc949bb7c
[INFO] running `Command { std: "docker" "start" "d2c332b412aaf5a6287f917c035024fd5397c5d298fc0839ad93999bc949bb7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2c332b412aaf5a6287f917c035024fd5397c5d298fc0839ad93999bc949bb7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d2c332b412aaf5a6287f917c035024fd5397c5d298fc0839ad93999bc949bb7c" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2c332b412aaf5a6287f917c035024fd5397c5d298fc0839ad93999bc949bb7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d2c332b412aaf5a6287f917c035024fd5397c5d298fc0839ad93999bc949bb7c" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling rand_core v0.3.2
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling pin-utils v0.1.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling futures-join-macro-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.18
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-util-preview-0.3.0-alpha.18/src/lib.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(feature = "async-await", feature(async_await))]
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `async_await` has been stable since `1.39.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-util-preview` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d2c332b412aaf5a6287f917c035024fd5397c5d298fc0839ad93999bc949bb7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2c332b412aaf5a6287f917c035024fd5397c5d298fc0839ad93999bc949bb7c", kill_on_drop: false }`
[INFO] [stdout] d2c332b412aaf5a6287f917c035024fd5397c5d298fc0839ad93999bc949bb7c
