[INFO] fetching crate rscel 1.0.6...
[INFO] testing rscel-1.0.6 against 1.90.0 for beta-1.91-3
[INFO] extracting crate rscel 1.0.6 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate rscel 1.0.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rscel 1.0.6
[INFO] tweaked toml for crates.io crate rscel 1.0.6 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rscel 1.0.6 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 rscel 1.0.6 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded test-case v3.3.1
[INFO] [stderr]   Downloaded protoc-bin-vendored v3.1.0
[INFO] [stderr]   Downloaded rscel-macro v1.0.6
[INFO] [stderr]   Downloaded test-case-macros v3.3.1
[INFO] [stderr]   Downloaded test-case-core v3.3.1
[INFO] [stderr]   Downloaded chrono-tz-build v0.4.1
[INFO] [stderr]   Downloaded protobuf-support v3.7.1
[INFO] [stderr]   Downloaded tempfile v3.16.0
[INFO] [stderr]   Downloaded serde_json v1.0.138
[INFO] [stderr]   Downloaded protobuf-parse v3.7.1
[INFO] [stderr]   Downloaded protobuf-codegen v3.7.1
[INFO] [stderr]   Downloaded rust_decimal v1.36.0
[INFO] [stderr]   Downloaded duration-str v0.13.0
[INFO] [stderr]   Downloaded cc v1.2.14
[INFO] [stderr]   Downloaded winnow v0.6.8
[INFO] [stderr]   Downloaded protobuf v3.7.1
[INFO] [stderr]   Downloaded chrono-tz v0.10.3
[INFO] [stderr]   Downloaded protoc-bin-vendored-macos-aarch_64 v3.1.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-macos-x86_64 v3.1.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-win32 v3.1.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-linux-ppcle_64 v3.1.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-linux-x86_64 v3.1.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-linux-x86_32 v3.1.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-linux-aarch_64 v3.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 2fb35ac13008f9ac53ac554e51ae064f7714d871a9ff731f98a7d3dd57306c97
[INFO] running `Command { std: "docker" "start" "-a" "2fb35ac13008f9ac53ac554e51ae064f7714d871a9ff731f98a7d3dd57306c97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fb35ac13008f9ac53ac554e51ae064f7714d871a9ff731f98a7d3dd57306c97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fb35ac13008f9ac53ac554e51ae064f7714d871a9ff731f98a7d3dd57306c97", kill_on_drop: false }`
[INFO] [stdout] 2fb35ac13008f9ac53ac554e51ae064f7714d871a9ff731f98a7d3dd57306c97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] ec87f9f33eb96f9cf97cc47b78f502e892979ac901ce7f4bb8f1a66faf71aa4d
[INFO] running `Command { std: "docker" "start" "-a" "ec87f9f33eb96f9cf97cc47b78f502e892979ac901ce7f4bb8f1a66faf71aa4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling bitflags v2.8.0
[INFO] [stderr]    Compiling once_cell v1.20.3
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling protobuf v3.7.1
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]    Compiling protoc-bin-vendored-linux-x86_64 v3.1.0
[INFO] [stderr]    Compiling protoc-bin-vendored-linux-aarch_64 v3.1.0
[INFO] [stderr]    Compiling protoc-bin-vendored-linux-ppcle_64 v3.1.0
[INFO] [stderr]    Compiling protoc-bin-vendored-linux-x86_32 v3.1.0
[INFO] [stderr]    Compiling protoc-bin-vendored-win32 v3.1.0
[INFO] [stderr]    Compiling protoc-bin-vendored-macos-x86_64 v3.1.0
[INFO] [stderr]    Compiling rust_decimal v1.36.0
[INFO] [stderr]    Compiling protoc-bin-vendored-macos-aarch_64 v3.1.0
[INFO] [stderr]    Compiling deranged v0.3.11
[INFO] [stderr]    Compiling protoc-bin-vendored v3.1.0
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.138
[INFO] [stderr]    Compiling ryu v1.0.19
[INFO] [stderr]    Compiling indexmap v2.7.1
[INFO] [stderr]    Compiling phf v0.11.3
[INFO] [stderr]    Compiling winnow v0.6.8
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling time v0.3.37
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling tempfile v3.16.0
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.1
[INFO] [stderr]    Compiling chrono-tz-build v0.4.1
[INFO] [stderr]    Compiling chrono-tz v0.10.3
[INFO] [stderr]    Compiling darling_core v0.20.10
[INFO] [stderr]    Compiling test-case-core v3.3.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling thiserror-impl v2.0.11
[INFO] [stderr]    Compiling test-case-macros v3.3.1
[INFO] [stderr]    Compiling rscel-macro v1.0.6
[INFO] [stderr]    Compiling test-case v3.3.1
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling protobuf-support v3.7.1
[INFO] [stderr]    Compiling darling_macro v0.20.10
[INFO] [stderr]    Compiling darling v0.20.10
[INFO] [stderr]    Compiling serde_with_macros v3.12.0
[INFO] [stderr]    Compiling protobuf-parse v3.7.1
[INFO] [stderr]    Compiling protobuf-codegen v3.7.1
[INFO] [stderr]    Compiling chrono v0.4.39
[INFO] [stderr]    Compiling duration-str v0.13.0
[INFO] [stderr]    Compiling serde_with v3.12.0
[INFO] [stderr]    Compiling rscel v1.0.6 (/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(string_remove_matches)]
[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 `rscel` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "ec87f9f33eb96f9cf97cc47b78f502e892979ac901ce7f4bb8f1a66faf71aa4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec87f9f33eb96f9cf97cc47b78f502e892979ac901ce7f4bb8f1a66faf71aa4d", kill_on_drop: false }`
[INFO] [stdout] ec87f9f33eb96f9cf97cc47b78f502e892979ac901ce7f4bb8f1a66faf71aa4d