[INFO] fetching crate req_ 0.1.31...
[INFO] testing req_-0.1.31 against 1.90.0 for beta-1.91-3
[INFO] extracting crate req_ 0.1.31 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate req_ 0.1.31
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate req_ 0.1.31
[INFO] tweaked toml for crates.io crate req_ 0.1.31 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate req_ 0.1.31 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 req_ 0.1.31 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 static_ v0.1.14
[INFO] [stderr]   Downloaded gensym v0.1.1
[INFO] [stderr]   Downloaded xkv v0.1.44
[INFO] [stderr]   Downloaded xboot v0.1.28
[INFO] [stderr]   Downloaded captcha_verify v0.1.4
[INFO] [stderr]   Downloaded async_wrap v0.1.10
[INFO] [stderr]   Downloaded append-only-vec v0.1.7
[INFO] [stderr]   Downloaded munge_macro v0.4.3
[INFO] [stderr]   Downloaded hpc_captcha v0.1.3
[INFO] [stderr]   Downloaded xbin v0.1.6
[INFO] [stderr]   Downloaded pb-jelly v0.0.17
[INFO] [stderr]   Downloaded munge v0.4.3
[INFO] [stderr]   Downloaded rancor v0.1.0
[INFO] [stderr]   Downloaded compact_str v0.5.2
[INFO] [stderr]   Downloaded fred v10.0.4
[INFO] [stderr]   Downloaded redis-protocol v6.0.0
[INFO] [stderr]   Downloaded sonic-number v0.1.0
[INFO] [stderr]   Downloaded loginit v0.1.18
[INFO] [stderr]   Downloaded async-trait v0.1.86
[INFO] [stderr]   Downloaded rkyv v0.8.10
[INFO] [stderr]   Downloaded sonic-rs v0.3.17
[INFO] [stderr]   Downloaded static_init v1.0.3
[INFO] [stderr]   Downloaded cookie-factory v0.3.2
[INFO] [stderr]   Downloaded faststr v0.2.31
[INFO] [stderr]   Downloaded ptr_meta_derive v0.3.0
[INFO] [stderr]   Downloaded rend v0.5.2
[INFO] [stderr]   Downloaded rkyv_derive v0.8.10
[INFO] [stderr]   Downloaded static_init_macro v1.0.4
[INFO] [stderr]   Downloaded sonic-simd v0.1.0
[INFO] [stderr]   Downloaded icall v0.1.46
[INFO] [stderr]   Downloaded xerr v0.1.15
[INFO] [stderr]   Downloaded fred-macros v0.1.0
[INFO] [stderr]   Downloaded crc16 v0.4.0
[INFO] [stderr]   Downloaded ptr_meta v0.3.0
[INFO] [stderr]   Downloaded anyhow v1.0.96
[INFO] [stderr]   Downloaded uuid v1.15.0
[INFO] [stderr]   Downloaded ub64 v0.0.10
[INFO] [stderr]   Downloaded aok v0.1.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 0d5413dfdbcb119ba2ea876be0075ab56c1fc626af8f0701a560b1b0ccb4d60e
[INFO] running `Command { std: "docker" "start" "-a" "0d5413dfdbcb119ba2ea876be0075ab56c1fc626af8f0701a560b1b0ccb4d60e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d5413dfdbcb119ba2ea876be0075ab56c1fc626af8f0701a560b1b0ccb4d60e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d5413dfdbcb119ba2ea876be0075ab56c1fc626af8f0701a560b1b0ccb4d60e", kill_on_drop: false }`
[INFO] [stdout] 0d5413dfdbcb119ba2ea876be0075ab56c1fc626af8f0701a560b1b0ccb4d60e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2eec7a457852e78828f2eb34dd7e97a28445b998b3d3ad5b13b98884dfef17a4
[INFO] running `Command { std: "docker" "start" "-a" "2eec7a457852e78828f2eb34dd7e97a28445b998b3d3ad5b13b98884dfef17a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.17
[INFO] [stderr]    Compiling libc v0.2.170
[INFO] [stderr]    Compiling anyhow v1.0.96
[INFO] [stderr]    Compiling smallvec v1.14.0
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling http v1.2.0
[INFO] [stderr]    Compiling bumpalo v3.17.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling aok v0.1.17
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling dashmap v6.1.0
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling tokio v1.43.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling xerr v0.1.15
[INFO] [stderr]    Compiling req_ v0.1.31 (/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(doc_auto_cfg)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(doc_cfg)]
[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 `req_` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2eec7a457852e78828f2eb34dd7e97a28445b998b3d3ad5b13b98884dfef17a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2eec7a457852e78828f2eb34dd7e97a28445b998b3d3ad5b13b98884dfef17a4", kill_on_drop: false }`
[INFO] [stdout] 2eec7a457852e78828f2eb34dd7e97a28445b998b3d3ad5b13b98884dfef17a4