[INFO] fetching crate ringboard 0.15.0...
[INFO] testing ringboard-0.15.0 against 1.95.0 for beta-1.96-2
[INFO] extracting crate ringboard 0.15.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate ringboard 0.15.0
[INFO] finished tweaking crates.io crate ringboard 0.15.0
[INFO] tweaked toml for crates.io crate ringboard 0.15.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ringboard 0.15.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ringboard 0.15.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded terminal_size v0.4.4
[INFO] [stderr]   Downloaded serde_spanned v1.1.1
[INFO] [stderr]   Downloaded expect-test v1.5.1
[INFO] [stderr]   Downloaded supercilex-tests v0.4.21
[INFO] [stderr]   Downloaded dissimilar v1.0.11
[INFO] [stderr]   Downloaded toml v1.1.2+spec-1.1.0
[INFO] [stderr]   Downloaded clap-num v1.2.0
[INFO] [stderr]   Downloaded ask-cli v0.3.0
[INFO] [stderr]   Downloaded stable-type v0.1.1
[INFO] [stderr]   Downloaded clipboard-history-core v0.15.0
[INFO] [stderr]   Downloaded clap v4.6.0
[INFO] [stderr]   Downloaded fuc_engine v3.1.1
[INFO] [stderr]   Downloaded error-stack v0.7.0
[INFO] [stderr]   Downloaded bon-macros v3.9.1
[INFO] [stderr]   Downloaded quick-xml v0.39.2
[INFO] [stderr]   Downloaded rand_distr v0.6.0
[INFO] [stderr]   Downloaded darling_core v0.23.0
[INFO] [stderr]   Downloaded bon v3.9.1
[INFO] [stderr]   Downloaded rand v0.10.1
[INFO] [stderr]   Downloaded nix v0.29.0
[INFO] [stderr]   Downloaded clap_builder v4.6.0
[INFO] [stderr]   Downloaded darling v0.23.0
[INFO] [stderr]   Downloaded unicase v2.9.0
[INFO] [stderr]   Downloaded rand_xoshiro v0.8.0
[INFO] [stderr]   Downloaded anstyle-parse v1.0.0
[INFO] [stderr]   Downloaded clipboard-history-client-sdk v0.15.0
[INFO] [stderr]   Downloaded fs_at v0.2.1
[INFO] [stderr]   Downloaded rand_core v0.10.0
[INFO] [stderr]   Downloaded colorchoice v1.0.5
[INFO] [stderr]   Downloaded anstream v1.0.0
[INFO] [stderr]   Downloaded anstyle v1.0.14
[INFO] [stderr]   Downloaded base64-serde v0.8.0
[INFO] [stderr]   Downloaded clap_derive v4.6.0
[INFO] [stderr]   Downloaded smallvec v2.0.0-alpha.12
[INFO] [stderr]   Downloaded darling_macro v0.23.0
[INFO] [stderr]   Downloaded aligned v0.4.3
[INFO] [stderr]   Downloaded cvt v0.1.2
[INFO] [stderr]   Downloaded remove_dir_all v1.0.0
[INFO] [stderr]   Downloaded rustc-hash v2.1.2
[INFO] [stderr]   Downloaded toml_writer v1.1.1+spec-1.1.0
[INFO] [stderr]   Downloaded clap_lex v1.1.0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed4c380a85a540363b9c2f93d7aee4cfc020765a72cc436f9b86ed8ef0ebf0e2
[INFO] running `Command { std: "docker" "start" "-a" "ed4c380a85a540363b9c2f93d7aee4cfc020765a72cc436f9b86ed8ef0ebf0e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed4c380a85a540363b9c2f93d7aee4cfc020765a72cc436f9b86ed8ef0ebf0e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed4c380a85a540363b9c2f93d7aee4cfc020765a72cc436f9b86ed8ef0ebf0e2", kill_on_drop: false }`
[INFO] [stdout] ed4c380a85a540363b9c2f93d7aee4cfc020765a72cc436f9b86ed8ef0ebf0e2
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3ebfd84ef0ba2ffe930b836847af9113044cf988d34dbecfeb292b25a6b826f
[INFO] running `Command { std: "docker" "start" "-a" "d3ebfd84ef0ba2ffe930b836847af9113044cf988d34dbecfeb292b25a6b826f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling libc v0.2.184
[INFO] [stderr]    Compiling semver v1.0.28
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling libm v0.2.16
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling option-ext v0.2.0
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling anstyle-parse v1.0.0
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling colorchoice v1.0.5
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.2
[INFO] [stderr]    Compiling unicase v2.9.0
[INFO] [stderr]    Compiling anstyle v1.0.14
[INFO] [stderr]    Compiling anstyle-query v1.1.5
[INFO] [stderr]    Compiling rand_core v0.10.0
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling clap_lex v1.1.0
[INFO] [stderr]    Compiling error-stack v0.7.0
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling anstream v1.0.0
[INFO] [stderr]    Compiling rand v0.10.1
[INFO] [stderr]    Compiling toml_datetime v1.1.1+spec-1.1.0
[INFO] [stderr]    Compiling serde_spanned v1.1.1
[INFO] [stderr]    Compiling mime v0.3.17
[INFO] [stderr]    Compiling toml_writer v1.1.1+spec-1.1.0
[INFO] [stderr]    Compiling rustc-hash v2.1.2
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling smallvec v2.0.0-alpha.12
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling rand_xoshiro v0.8.0
[INFO] [stderr]    Compiling toml v1.1.2+spec-1.1.0
[INFO] [stderr]    Compiling base64-serde v0.8.0
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling ask-cli v0.3.0
[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/ask-cli-0.3.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(read_buf)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ask-cli` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d3ebfd84ef0ba2ffe930b836847af9113044cf988d34dbecfeb292b25a6b826f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3ebfd84ef0ba2ffe930b836847af9113044cf988d34dbecfeb292b25a6b826f", kill_on_drop: false }`
[INFO] [stdout] d3ebfd84ef0ba2ffe930b836847af9113044cf988d34dbecfeb292b25a6b826f
