[INFO] fetching crate rhai-memflow 0.1.2...
[INFO] testing rhai-memflow-0.1.2 against 1.90.0 for beta-1.91-3
[INFO] extracting crate rhai-memflow 0.1.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate rhai-memflow 0.1.2
[INFO] finished tweaking crates.io crate rhai-memflow 0.1.2
[INFO] tweaked toml for crates.io crate rhai-memflow 0.1.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rhai-memflow 0.1.2 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rhai-memflow 0.1.2 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ahash v0.8.0
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[INFO] [stderr]   Downloaded core_extensions v1.5.3
[INFO] [stderr]   Downloaded memflow v0.2.0-beta7
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 167c62166dd3c2657e9f04d27ee012c89c4b1b59d1f0f215b9fa247977b68d3c
[INFO] running `Command { std: "docker" "start" "-a" "167c62166dd3c2657e9f04d27ee012c89c4b1b59d1f0f215b9fa247977b68d3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "167c62166dd3c2657e9f04d27ee012c89c4b1b59d1f0f215b9fa247977b68d3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "167c62166dd3c2657e9f04d27ee012c89c4b1b59d1f0f215b9fa247977b68d3c", kill_on_drop: false }`
[INFO] [stdout] 167c62166dd3c2657e9f04d27ee012c89c4b1b59d1f0f215b9fa247977b68d3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb19efa37ccc5c2659ff2f0bb6eacecd604b1c82470e9db44d92ae0c7aac645c
[INFO] running `Command { std: "docker" "start" "-a" "cb19efa37ccc5c2659ff2f0bb6eacecd604b1c82470e9db44d92ae0c7aac645c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling once_cell v1.14.0
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling smallvec v1.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling core_extensions v1.5.3
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling core_extensions_proc_macros v1.5.3
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling tstr_proc_macros v0.2.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling abi_stable_shared v0.10.3
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling tstr v0.2.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling rustversion v1.0.9
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling generational-arena v0.2.8
[INFO] [stderr]    Compiling repr_offset v0.2.1
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling ahash v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]    Compiling no-std-compat v0.4.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling dirs-sys v0.3.7
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling dataview v0.1.2
[INFO] [stderr]    Compiling volatile v0.4.5
[INFO] [stderr]    Compiling pelite-macros v0.1.1
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling x86_64 v0.14.10
[INFO] [stderr]    Compiling dirs v4.0.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling pelite v0.9.0
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling coarsetime v0.1.22
[INFO] [stderr]    Compiling fixed-slice-vec v0.8.0
[INFO] [stderr]    Compiling rangemap v1.0.3
[INFO] [stderr]    Compiling bumpalo v3.11.0
[INFO] [stderr]    Compiling widestring v1.0.2
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling as_derive_utils v0.10.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.34
[INFO] [stderr]    Compiling scroll_derive v0.11.0
[INFO] [stderr]    Compiling abi_stable_derive v0.10.3
[INFO] [stderr]    Compiling rhai_codegen v1.4.2
[INFO] [stderr]    Compiling thiserror v1.0.34
[INFO] [stderr]    Compiling scroll v0.11.0
[INFO] [stderr]    Compiling proc-macro-crate v1.2.1
[INFO] [stderr]    Compiling rhai v1.9.1
[INFO] [stderr]    Compiling cglue-gen v0.2.5
[INFO] [stderr]    Compiling goblin v0.5.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling memflow-derive v0.2.0-beta3
[INFO] [stderr]    Compiling cglue-macro v0.2.2
[INFO] [stderr]    Compiling abi_stable v0.10.4
[INFO] [stderr]    Compiling cglue v0.2.11
[INFO] [stderr]    Compiling memflow v0.2.0-beta7
[INFO] [stderr]    Compiling rhai-memflow v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `map_first_last` has been stable since 1.66.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rhai-memflow` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "cb19efa37ccc5c2659ff2f0bb6eacecd604b1c82470e9db44d92ae0c7aac645c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb19efa37ccc5c2659ff2f0bb6eacecd604b1c82470e9db44d92ae0c7aac645c", kill_on_drop: false }`
[INFO] [stdout] cb19efa37ccc5c2659ff2f0bb6eacecd604b1c82470e9db44d92ae0c7aac645c