[INFO] fetching crate safety-parser 0.3.8...
[INFO] testing safety-parser-0.3.8 against 1.90.0 for beta-1.91-3
[INFO] extracting crate safety-parser 0.3.8 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate safety-parser 0.3.8
[INFO] finished tweaking crates.io crate safety-parser 0.3.8
[INFO] tweaked toml for crates.io crate safety-parser 0.3.8 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate safety-parser 0.3.8 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 safety-parser 0.3.8 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 20c671cb7772629630cbcf7cfa7783d184970b557f682a5fb9e1051b09a2217f
[INFO] running `Command { std: "docker" "start" "-a" "20c671cb7772629630cbcf7cfa7783d184970b557f682a5fb9e1051b09a2217f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20c671cb7772629630cbcf7cfa7783d184970b557f682a5fb9e1051b09a2217f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20c671cb7772629630cbcf7cfa7783d184970b557f682a5fb9e1051b09a2217f", kill_on_drop: false }`
[INFO] [stdout] 20c671cb7772629630cbcf7cfa7783d184970b557f682a5fb9e1051b09a2217f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 6b56359c068fd7487b5fe9048dd33dd42de5a5f5dbb34175c627311549b2f7d1
[INFO] running `Command { std: "docker" "start" "-a" "6b56359c068fd7487b5fe9048dd33dd42de5a5f5dbb34175c627311549b2f7d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling winnow v0.7.11
[INFO] [stderr]    Compiling toml_writer v1.0.2
[INFO] [stderr]    Compiling hashbrown v0.15.3
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling toml_parser v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_spanned v1.0.0
[INFO] [stderr]    Compiling toml_datetime v0.7.0
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling indexmap v2.10.0
[INFO] [stderr]    Compiling toml v0.9.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling safety-parser v0.3.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `let_chains` has been stable since `1.88.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `safety-parser` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "6b56359c068fd7487b5fe9048dd33dd42de5a5f5dbb34175c627311549b2f7d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b56359c068fd7487b5fe9048dd33dd42de5a5f5dbb34175c627311549b2f7d1", kill_on_drop: false }`
[INFO] [stdout] 6b56359c068fd7487b5fe9048dd33dd42de5a5f5dbb34175c627311549b2f7d1