[INFO] fetching crate pi_async 0.5.16...
[INFO] testing pi_async-0.5.16 against 1.91.0 for beta-1.92-2
[INFO] extracting crate pi_async 0.5.16 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate pi_async 0.5.16
[INFO] finished tweaking crates.io crate pi_async 0.5.16
[INFO] tweaked toml for crates.io crate pi_async 0.5.16 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pi_async 0.5.16 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 142 packages to latest compatible versions
[INFO] [stderr]       Adding dashmap v3.11.10 (available: v6.1.0)
[INFO] [stderr]       Adding env_logger v0.7.1 (available: v0.11.8)
[INFO] [stderr]       Adding flume v0.10.14 (available: v0.11.1)
[INFO] [stderr]       Adding pi_cancel_timer v0.2.1 (available: v0.3.3)
[INFO] [stderr]       Adding pi_time v0.3.4 (available: v0.5.2)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] [stderr]       Adding twox-hash v1.6.3 (available: v2.1.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pi_hash v0.1.1
[INFO] [stderr]   Downloaded pi_slot_wheel v0.2.0
[INFO] [stderr]   Downloaded pi_time v0.3.4
[INFO] [stderr]   Downloaded pi_slot_deque v0.2.1
[INFO] [stderr]   Downloaded wasi v0.7.0
[INFO] [stderr]   Downloaded dashmap v3.11.10
[INFO] [stderr]   Downloaded pi_ext_heap v0.1.1
[INFO] [stderr]   Downloaded ahash v0.3.8
[INFO] [stderr]   Downloaded pi_cancel_timer v0.2.1
[INFO] [stderr]   Downloaded future-parking_lot v0.3.3
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebd631ae34c58e778b153e6c0d753a61bf14efc55ce683cad051ab7ebd471261
[INFO] running `Command { std: "docker" "start" "-a" "ebd631ae34c58e778b153e6c0d753a61bf14efc55ce683cad051ab7ebd471261", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebd631ae34c58e778b153e6c0d753a61bf14efc55ce683cad051ab7ebd471261", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebd631ae34c58e778b153e6c0d753a61bf14efc55ce683cad051ab7ebd471261", kill_on_drop: false }`
[INFO] [stdout] ebd631ae34c58e778b153e6c0d753a61bf14efc55ce683cad051ab7ebd471261
[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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a15a10843b0e7505a6a0491230f300f9068224771e101147776738d2fa883b53
[INFO] running `Command { std: "docker" "start" "-a" "a15a10843b0e7505a6a0491230f300f9068224771e101147776738d2fa883b53", kill_on_drop: false }`
[INFO] [stderr]    Compiling slotmap v1.0.7
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling pi_ext_heap v0.1.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling ctor v0.2.9
[INFO] [stderr]    Compiling async-stream-impl v0.3.6
[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/pi_ext_heap-0.1.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/pi_ext_heap-0.1.1/src/lib.rs:145:1
[INFO] [stdout]     |
[INFO] [stdout] 145 | #![feature(inplace_iteration)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/pi_ext_heap-0.1.1/src/lib.rs:146:1
[INFO] [stdout]     |
[INFO] [stdout] 146 | #![feature(trusted_len)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/pi_ext_heap-0.1.1/src/lib.rs:147:1
[INFO] [stdout]     |
[INFO] [stdout] 147 | #![feature(exact_size_is_empty)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/pi_ext_heap-0.1.1/src/lib.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | #![feature(extend_one)]
[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 `pi_ext_heap` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a15a10843b0e7505a6a0491230f300f9068224771e101147776738d2fa883b53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a15a10843b0e7505a6a0491230f300f9068224771e101147776738d2fa883b53", kill_on_drop: false }`
[INFO] [stdout] a15a10843b0e7505a6a0491230f300f9068224771e101147776738d2fa883b53