[INFO] cloning repository https://github.com/lnay/reMathML
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lnay/reMathML" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flnay%2FreMathML", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flnay%2FreMathML'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb11b1260ace3cabfc3dffe29976dc8e4b240a3b
[INFO] testing lnay/reMathML against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flnay%2FreMathML" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-5-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/lnay/reMathML
[INFO] finished tweaking git repo https://github.com/lnay/reMathML
[INFO] tweaked toml for git repo https://github.com/lnay/reMathML written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lnay/reMathML 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 git repo https://github.com/lnay/reMathML 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 yazi v0.2.1
[INFO] [stderr]   Downloaded function_name-proc-macro v0.3.0
[INFO] [stderr]   Downloaded function_name v0.3.0
[INFO] [stderr]   Downloaded font-types v0.8.4
[INFO] [stderr]   Downloaded fontconfig-cache-parser v0.2.0
[INFO] [stderr]   Downloaded peniko v0.3.1
[INFO] [stderr]   Downloaded parley v0.3.0
[INFO] [stderr]   Downloaded fontique v0.3.0
[INFO] [stderr]   Downloaded color v0.2.3
[INFO] [stderr]   Downloaded objc2-core-text v0.3.1
[INFO] [stderr]   Downloaded zeno v0.3.2
[INFO] [stderr]   Downloaded kurbo v0.11.2
[INFO] [stderr]   Downloaded swash v0.2.2
[INFO] [stderr]   Downloaded skrifa v0.26.6
[INFO] [stderr]   Downloaded skrifa v0.30.0
[INFO] [stderr]   Downloaded read-fonts v0.25.3
[INFO] [stderr]   Downloaded read-fonts v0.28.0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 729434919d409c84626bc89bd9d80925140a207f9111a9eef6b5e9449ed9adb5
[INFO] running `Command { std: "docker" "start" "-a" "729434919d409c84626bc89bd9d80925140a207f9111a9eef6b5e9449ed9adb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "729434919d409c84626bc89bd9d80925140a207f9111a9eef6b5e9449ed9adb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "729434919d409c84626bc89bd9d80925140a207f9111a9eef6b5e9449ed9adb5", kill_on_drop: false }`
[INFO] [stdout] 729434919d409c84626bc89bd9d80925140a207f9111a9eef6b5e9449ed9adb5
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a259742d27fd6a006cb4e9ebcc44d49648970ec1e6920ccb44c3c69fead88815
[INFO] running `Command { std: "docker" "start" "-a" "a259742d27fd6a006cb4e9ebcc44d49648970ec1e6920ccb44c3c69fead88815", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]    Compiling color v0.2.3
[INFO] [stderr]    Compiling litemap v0.7.5
[INFO] [stderr]    Compiling strict-num v0.1.1
[INFO] [stderr]    Compiling miniz_oxide v0.8.8
[INFO] [stderr]    Compiling hashbrown v0.15.3
[INFO] [stderr]    Compiling arrayref v0.3.9
[INFO] [stderr]    Compiling roxmltree v0.20.0
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling kurbo v0.11.2
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling flate2 v1.1.1
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling memmap2 v0.9.5
[INFO] [stderr]    Compiling png v0.17.16
[INFO] [stderr]    Compiling peniko v0.3.1
[INFO] [stderr]    Compiling bytemuck_derive v1.9.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tinystr v0.7.6
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling icu_locid v1.5.0
[INFO] [stderr]    Compiling bytemuck v1.23.0
[INFO] [stderr]    Compiling font-types v0.8.4
[INFO] [stderr]    Compiling fontconfig-cache-parser v0.2.0
[INFO] [stderr]    Compiling tiny-skia-path v0.11.4
[INFO] [stderr]    Compiling read-fonts v0.25.3
[INFO] [stderr]    Compiling read-fonts v0.28.0
[INFO] [stderr]    Compiling tiny-skia v0.11.4
[INFO] [stderr]    Compiling skrifa v0.26.6
[INFO] [stderr]    Compiling fontique v0.3.0
[INFO] [stderr]    Compiling skrifa v0.30.0
[INFO] [stderr]    Compiling swash v0.2.2
[INFO] [stderr]    Compiling parley v0.3.0
[INFO] [stderr]    Compiling remml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(test)]
[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 `remml` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a259742d27fd6a006cb4e9ebcc44d49648970ec1e6920ccb44c3c69fead88815", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a259742d27fd6a006cb4e9ebcc44d49648970ec1e6920ccb44c3c69fead88815", kill_on_drop: false }`
[INFO] [stdout] a259742d27fd6a006cb4e9ebcc44d49648970ec1e6920ccb44c3c69fead88815
