[INFO] fetching crate eth_trie_utils 0.6.0...
[INFO] testing eth_trie_utils-0.6.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate eth_trie_utils 0.6.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate eth_trie_utils 0.6.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate eth_trie_utils 0.6.0
[INFO] tweaked toml for crates.io crate eth_trie_utils 0.6.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate eth_trie_utils 0.6.0 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 eth_trie_utils 0.6.0 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 byte-slice-cast v1.2.2
[INFO] [stderr]   Downloaded keccak-hash v0.8.0
[INFO] [stderr]   Downloaded primitive-types v0.10.1
[INFO] [stderr]   Downloaded parking_lot_core v0.5.0
[INFO] [stderr]   Downloaded parking_lot v0.8.0
[INFO] [stderr]   Downloaded hashbrown v0.3.1
[INFO] [stderr]   Downloaded heapsize v0.4.2
[INFO] [stderr]   Downloaded uint v0.4.1
[INFO] [stderr]   Downloaded rlp v0.3.0
[INFO] [stderr]   Downloaded winnow v0.4.1
[INFO] [stderr]   Downloaded toml_edit v0.19.8
[INFO] [stderr]   Downloaded parity-scale-codec v3.4.0
[INFO] [stderr]   Downloaded lock_api v0.2.0
[INFO] [stderr]   Downloaded ethereum-types-serialize v0.2.2
[INFO] [stderr]   Downloaded fixed-hash v0.2.5
[INFO] [stderr]   Downloaded ethereum-types v0.4.2
[INFO] [stderr]   Downloaded eth_trie v0.1.0
[INFO] [stderr]   Downloaded primitive-types v0.12.1
[INFO] [stderr]   Downloaded ethbloom v0.5.3
[INFO] [stderr]   Downloaded crunchy v0.1.6
[INFO] [stderr]   Downloaded parity-scale-codec-derive v3.1.4
[INFO] [stderr]   Downloaded keccak-hash v0.10.0
[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] dedc38ea376ce636761b64f2f2cf3f0e4fb3dceeb96d371c259321cca36b3afa
[INFO] running `Command { std: "docker" "start" "-a" "dedc38ea376ce636761b64f2f2cf3f0e4fb3dceeb96d371c259321cca36b3afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dedc38ea376ce636761b64f2f2cf3f0e4fb3dceeb96d371c259321cca36b3afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dedc38ea376ce636761b64f2f2cf3f0e4fb3dceeb96d371c259321cca36b3afa", kill_on_drop: false }`
[INFO] [stdout] dedc38ea376ce636761b64f2f2cf3f0e4fb3dceeb96d371c259321cca36b3afa
[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] 25b2c0801d7b5455f085cecd00f8405f9c7463faee5036c08da249e07caca8ff
[INFO] running `Command { std: "docker" "start" "-a" "25b2c0801d7b5455f085cecd00f8405f9c7463faee5036c08da249e07caca8ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling rlp v0.5.2
[INFO] [stderr]    Compiling impl-rlp v0.3.0
[INFO] [stderr]    Compiling getrandom v0.2.9
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling fixed-hash v0.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling enum-as-inner v0.5.1
[INFO] [stderr]    Compiling impl-serde v0.4.0
[INFO] [stderr]    Compiling primitive-types v0.12.1
[INFO] [stderr]    Compiling ethbloom v0.13.0
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling ethereum-types v0.14.1
[INFO] [stderr]    Compiling keccak-hash v0.10.0
[INFO] [stderr]    Compiling eth_trie_utils v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(return_position_impl_trait_in_trait)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `return_position_impl_trait_in_trait` has been stable since `1.75.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `return_position_impl_trait_in_trait` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(return_position_impl_trait_in_trait)]
[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 `eth_trie_utils` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "25b2c0801d7b5455f085cecd00f8405f9c7463faee5036c08da249e07caca8ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25b2c0801d7b5455f085cecd00f8405f9c7463faee5036c08da249e07caca8ff", kill_on_drop: false }`
[INFO] [stdout] 25b2c0801d7b5455f085cecd00f8405f9c7463faee5036c08da249e07caca8ff