[INFO] fetching crate pawkit-fs 0.1.2...
[INFO] testing pawkit-fs-0.1.2 against 1.90.0 for beta-1.91-3
[INFO] extracting crate pawkit-fs 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate pawkit-fs 0.1.2
[INFO] finished tweaking crates.io crate pawkit-fs 0.1.2
[INFO] tweaked toml for crates.io crate pawkit-fs 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pawkit-fs 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 pawkit-fs 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 pawkit-logger v0.1.2
[INFO] [stderr]   Downloaded libz-rs-sys v0.5.1
[INFO] [stderr]   Downloaded cc v1.2.19
[INFO] [stderr]   Downloaded bzip2 v0.5.2
[INFO] [stderr]   Downloaded liblzma v0.4.2
[INFO] [stderr]   Downloaded zopfli v0.8.2
[INFO] [stderr]   Downloaded zlib-rs v0.5.1
[INFO] [stderr]   Downloaded zip v4.1.0
[INFO] [stderr]   Downloaded liblzma-sys v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4af358c6a31c70318246844a0be6d88f9dab16d04bc2a465fa33bd19eff63b2e
[INFO] running `Command { std: "docker" "start" "-a" "4af358c6a31c70318246844a0be6d88f9dab16d04bc2a465fa33bd19eff63b2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4af358c6a31c70318246844a0be6d88f9dab16d04bc2a465fa33bd19eff63b2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4af358c6a31c70318246844a0be6d88f9dab16d04bc2a465fa33bd19eff63b2e", kill_on_drop: false }`
[INFO] [stdout] 4af358c6a31c70318246844a0be6d88f9dab16d04bc2a465fa33bd19eff63b2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 55b7b4bacd0550372ed9594b319204186413b707a603fadcf54a5f78e34f40b4
[INFO] running `Command { std: "docker" "start" "-a" "55b7b4bacd0550372ed9594b319204186413b707a603fadcf54a5f78e34f40b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling jobserver v0.1.33
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling zlib-rs v0.5.1
[INFO] [stderr]    Compiling bumpalo v3.17.0
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling deflate64 v0.1.9
[INFO] [stderr]    Compiling inout v0.1.4
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling chrono v0.4.41
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling pbkdf2 v0.12.2
[INFO] [stderr]    Compiling cipher v0.4.4
[INFO] [stderr]    Compiling zopfli v0.8.2
[INFO] [stderr]    Compiling cc v1.2.19
[INFO] [stderr]    Compiling aes v0.8.4
[INFO] [stderr]    Compiling zstd-sys v2.0.15+zstd.1.5.7
[INFO] [stderr]    Compiling liblzma-sys v0.4.4
[INFO] [stderr]    Compiling bzip2-sys v0.1.13+1.0.8
[INFO] [stderr]    Compiling pawkit-logger v0.1.2
[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/pawkit-logger-0.1.2/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(decl_macro)]
[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 `pawkit-logger` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "55b7b4bacd0550372ed9594b319204186413b707a603fadcf54a5f78e34f40b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55b7b4bacd0550372ed9594b319204186413b707a603fadcf54a5f78e34f40b4", kill_on_drop: false }`
[INFO] [stdout] 55b7b4bacd0550372ed9594b319204186413b707a603fadcf54a5f78e34f40b4