[INFO] fetching crate ready 1.1.0...
[INFO] checking ready-1.1.0 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate ready 1.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate ready 1.1.0 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ready 1.1.0
[INFO] finished tweaking crates.io crate ready 1.1.0
[INFO] tweaked toml for crates.io crate ready 1.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding hermit-abi v0.3.9 (available: v0.4.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8020304438b236350fb9d0464e3f2be1a672534f415ba9a8b58ced553e1089c0
[INFO] running `Command { std: "docker" "start" "-a" "8020304438b236350fb9d0464e3f2be1a672534f415ba9a8b58ced553e1089c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8020304438b236350fb9d0464e3f2be1a672534f415ba9a8b58ced553e1089c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8020304438b236350fb9d0464e3f2be1a672534f415ba9a8b58ced553e1089c0", kill_on_drop: false }`
[INFO] [stdout] 8020304438b236350fb9d0464e3f2be1a672534f415ba9a8b58ced553e1089c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fc32e69fa8fa445f535a05b4cb89403c24a31e6ced53ee3e26ff1ee8a3799d2
[INFO] running `Command { std: "docker" "start" "-a" "3fc32e69fa8fa445f535a05b4cb89403c24a31e6ced53ee3e26ff1ee8a3799d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking ready v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stdout] warning: the feature `futures_api` has been stable since 1.36.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | #![feature(futures_api)]
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stdout] error: the feature `futures_api` has been stable since 1.36.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | #![feature(futures_api)]
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:4:24
[INFO] [stdout]    |
[INFO] [stdout] 4  | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(stable_features)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ready` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3fc32e69fa8fa445f535a05b4cb89403c24a31e6ced53ee3e26ff1ee8a3799d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fc32e69fa8fa445f535a05b4cb89403c24a31e6ced53ee3e26ff1ee8a3799d2", kill_on_drop: false }`
[INFO] [stdout] 3fc32e69fa8fa445f535a05b4cb89403c24a31e6ced53ee3e26ff1ee8a3799d2