[INFO] fetching crate frei0r-rs 0.2.0...
[INFO] testing frei0r-rs-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate frei0r-rs 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate frei0r-rs 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate frei0r-rs 0.2.0
[INFO] tweaked toml for crates.io crate frei0r-rs 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate frei0r-rs 0.2.0 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 frei0r-rs 0.2.0 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 either v1.12.0
[INFO] [stderr]   Downloaded frei0r-macros v0.2.0
[INFO] [stderr]   Downloaded frei0r-sys v0.1.1
[INFO] [stderr]   Downloaded clang-sys v1.8.2
[INFO] [stderr]   Downloaded prettyplease v0.2.20
[INFO] [stderr]   Downloaded proc-macro2 v1.0.84
[INFO] [stderr]   Downloaded syn v2.0.66
[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] 60facefb91af897fae3db7ed341d19efb84b5d419fe77b27b3080e71ed9b9da6
[INFO] running `Command { std: "docker" "start" "-a" "60facefb91af897fae3db7ed341d19efb84b5d419fe77b27b3080e71ed9b9da6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60facefb91af897fae3db7ed341d19efb84b5d419fe77b27b3080e71ed9b9da6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60facefb91af897fae3db7ed341d19efb84b5d419fe77b27b3080e71ed9b9da6", kill_on_drop: false }`
[INFO] [stdout] 60facefb91af897fae3db7ed341d19efb84b5d419fe77b27b3080e71ed9b9da6
[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] d427a8e16320e192d1fc55e17911015255a3bac50da9dd0682c8673521c0aff6
[INFO] running `Command { std: "docker" "start" "-a" "d427a8e16320e192d1fc55e17911015255a3bac50da9dd0682c8673521c0aff6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.84
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling prettyplease v0.2.20
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling either v1.12.0
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling bindgen v0.69.4
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling libloading v0.8.3
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling clang-sys v1.8.2
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling frei0r-macros v0.2.0
[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/frei0r-macros-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_try_collect)]
[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 `frei0r-macros` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d427a8e16320e192d1fc55e17911015255a3bac50da9dd0682c8673521c0aff6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d427a8e16320e192d1fc55e17911015255a3bac50da9dd0682c8673521c0aff6", kill_on_drop: false }`
[INFO] [stdout] d427a8e16320e192d1fc55e17911015255a3bac50da9dd0682c8673521c0aff6