[INFO] fetching crate markdoll 4.1.1...
[INFO] testing markdoll-4.1.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate markdoll 4.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate markdoll 4.1.1
[INFO] finished tweaking crates.io crate markdoll 4.1.1
[INFO] tweaked toml for crates.io crate markdoll 4.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate markdoll 4.1.1 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 markdoll 4.1.1 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 tyfling v0.1.4
[INFO] [stderr]   Downloaded miette-derive v7.5.0
[INFO] [stderr]   Downloaded spanner v0.2.0
[INFO] [stderr]   Downloaded supports-unicode v3.0.0
[INFO] [stderr]   Downloaded supports-hyperlinks v3.1.0
[INFO] [stderr]   Downloaded clap v4.5.36
[INFO] [stderr]   Downloaded owo-colors v4.2.0
[INFO] [stderr]   Downloaded supports-color v3.0.2
[INFO] [stderr]   Downloaded textwrap v0.16.2
[INFO] [stderr]   Downloaded rustix v1.0.5
[INFO] [stderr]   Downloaded miette v7.5.0
[INFO] [stderr]   Downloaded tracing-fancytree v0.1.0
[INFO] [stderr]   Downloaded clap_builder v4.5.36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 1cf54df44b45e1ffceb175e7cf9764df4637665990dd7d30b0790c1746e89ea6
[INFO] running `Command { std: "docker" "start" "-a" "1cf54df44b45e1ffceb175e7cf9764df4637665990dd7d30b0790c1746e89ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cf54df44b45e1ffceb175e7cf9764df4637665990dd7d30b0790c1746e89ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cf54df44b45e1ffceb175e7cf9764df4637665990dd7d30b0790c1746e89ea6", kill_on_drop: false }`
[INFO] [stdout] 1cf54df44b45e1ffceb175e7cf9764df4637665990dd7d30b0790c1746e89ea6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b66558837cd667bec1b36d94d45b6f1e89faeecce45847dd0f580010869725ea
[INFO] running `Command { std: "docker" "start" "-a" "b66558837cd667bec1b36d94d45b6f1e89faeecce45847dd0f580010869725ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.0.5
[INFO] [stderr]    Compiling owo-colors v4.2.0
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling addr2line v0.24.2
[INFO] [stderr]    Compiling miniz_oxide v0.8.8
[INFO] [stderr]    Compiling unicode-linebreak v0.1.5
[INFO] [stderr]    Compiling is_ci v1.2.0
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling supports-hyperlinks v3.1.0
[INFO] [stderr]    Compiling supports-unicode v3.0.0
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling clap_builder v4.5.36
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling utf8-width v0.1.7
[INFO] [stderr]    Compiling supports-color v3.0.2
[INFO] [stderr]    Compiling bytemuck v1.22.0
[INFO] [stderr]    Compiling html-escape v0.2.13
[INFO] [stderr]    Compiling textwrap v0.16.2
[INFO] [stderr]    Compiling terminal_size v0.4.2
[INFO] [stderr]    Compiling backtrace v0.3.74
[INFO] [stderr]    Compiling backtrace-ext v0.2.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling miette-derive v7.5.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling tyfling v0.1.4
[INFO] [stderr]    Compiling clap_derive v4.5.32
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling miette v7.5.0
[INFO] [stderr]    Compiling clap v4.5.36
[INFO] [stderr]    Compiling spanner 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/spanner-0.2.0/src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(round_char_boundary)]
[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 `spanner` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b66558837cd667bec1b36d94d45b6f1e89faeecce45847dd0f580010869725ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b66558837cd667bec1b36d94d45b6f1e89faeecce45847dd0f580010869725ea", kill_on_drop: false }`
[INFO] [stdout] b66558837cd667bec1b36d94d45b6f1e89faeecce45847dd0f580010869725ea