[INFO] fetching crate relp-num 0.1.13...
[INFO] testing relp-num-0.1.13 against 1.91.0 for beta-1.92-2
[INFO] extracting crate relp-num 0.1.13 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate relp-num 0.1.13
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate relp-num 0.1.13
[INFO] tweaked toml for crates.io crate relp-num 0.1.13 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate relp-num 0.1.13 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate relp-num 0.1.13 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded index-utils v2.2.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.49
[INFO] [stderr]   Downloaded plotters-svg v0.3.3
[INFO] [stderr]   Downloaded rayon-core v1.10.1
[INFO] [stderr]   Downloaded regex v1.7.0
[INFO] [stderr]   Downloaded plotters v0.3.4
[INFO] [stderr]   Downloaded cc v1.1.24
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30ea3d9b592f82e8818f38b832821bc5bd7306cc0164e1b9ff39cb6d5838a503
[INFO] running `Command { std: "docker" "start" "-a" "30ea3d9b592f82e8818f38b832821bc5bd7306cc0164e1b9ff39cb6d5838a503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30ea3d9b592f82e8818f38b832821bc5bd7306cc0164e1b9ff39cb6d5838a503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30ea3d9b592f82e8818f38b832821bc5bd7306cc0164e1b9ff39cb6d5838a503", kill_on_drop: false }`
[INFO] [stdout] 30ea3d9b592f82e8818f38b832821bc5bd7306cc0164e1b9ff39cb6d5838a503
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c94c362eab63e67ac1bdd2e2e00e76bfff2d7bcce799a53172fe09dfe53f5d13
[INFO] running `Command { std: "docker" "start" "-a" "c94c362eab63e67ac1bdd2e2e00e76bfff2d7bcce799a53172fe09dfe53f5d13", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.1.24
[INFO] [stderr]    Compiling gcd v2.3.0
[INFO] [stderr]    Compiling index-utils v2.2.3
[INFO] [stderr]    Compiling smallvec v1.13.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[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/smallvec-1.13.1/src/lib.rs:95:41
[INFO] [stdout]    |
[INFO] [stdout] 95 | #![cfg_attr(feature = "specialization", feature(specialization))]
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/index-utils-2.2.3/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(is_sorted)]
[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 `smallvec` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `index-utils` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c94c362eab63e67ac1bdd2e2e00e76bfff2d7bcce799a53172fe09dfe53f5d13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c94c362eab63e67ac1bdd2e2e00e76bfff2d7bcce799a53172fe09dfe53f5d13", kill_on_drop: false }`
[INFO] [stdout] c94c362eab63e67ac1bdd2e2e00e76bfff2d7bcce799a53172fe09dfe53f5d13