[INFO] fetching crate easy-configuration-format 0.2.3...
[INFO] testing easy-configuration-format-0.2.3 against 1.90.0 for beta-1.91-3
[INFO] extracting crate easy-configuration-format 0.2.3 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate easy-configuration-format 0.2.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate easy-configuration-format 0.2.3
[INFO] tweaked toml for crates.io crate easy-configuration-format 0.2.3 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate easy-configuration-format 0.2.3 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 easy-configuration-format 0.2.3 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded winnow v0.7.11
[INFO] [stderr]   Downloaded syn v2.0.103
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17f83ce397f85494b08cb1e84485e1eeb90d745e051d43ef5ea275d7ce1111f8
[INFO] running `Command { std: "docker" "start" "-a" "17f83ce397f85494b08cb1e84485e1eeb90d745e051d43ef5ea275d7ce1111f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17f83ce397f85494b08cb1e84485e1eeb90d745e051d43ef5ea275d7ce1111f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17f83ce397f85494b08cb1e84485e1eeb90d745e051d43ef5ea275d7ce1111f8", kill_on_drop: false }`
[INFO] [stdout] 17f83ce397f85494b08cb1e84485e1eeb90d745e051d43ef5ea275d7ce1111f8
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53220a8696b3021b6bb7e6d79e77f34eb2816fdfe8950a196697d1002abb3a73
[INFO] running `Command { std: "docker" "start" "-a" "53220a8696b3021b6bb7e6d79e77f34eb2816fdfe8950a196697d1002abb3a73", kill_on_drop: false }`
[INFO] [stderr]    Compiling easy-configuration-format v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:104:1
[INFO] [stdout]     |
[INFO] [stdout] 104 | #![feature(anonymous_lifetime_in_impl_trait)]
[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 `easy-configuration-format` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "53220a8696b3021b6bb7e6d79e77f34eb2816fdfe8950a196697d1002abb3a73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53220a8696b3021b6bb7e6d79e77f34eb2816fdfe8950a196697d1002abb3a73", kill_on_drop: false }`
[INFO] [stdout] 53220a8696b3021b6bb7e6d79e77f34eb2816fdfe8950a196697d1002abb3a73