[INFO] cloning repository https://github.com/martin-t/sokoban-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/martin-t/sokoban-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmartin-t%2Fsokoban-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmartin-t%2Fsokoban-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31379b7a023ac4248697bdcf4314cc582a241d86
[INFO] testing martin-t/sokoban-solver against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmartin-t%2Fsokoban-solver" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/martin-t/sokoban-solver
[INFO] finished tweaking git repo https://github.com/martin-t/sokoban-solver
[INFO] tweaked toml for git repo https://github.com/martin-t/sokoban-solver written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/martin-t/sokoban-solver on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/martin-t/sokoban-solver 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" "+1.99.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b52dc23c02df9b59d13d2e706eb0be06606e41748f64ee12c4db03f7c57f8219
[INFO] running `Command { std: "docker" "start" "b52dc23c02df9b59d13d2e706eb0be06606e41748f64ee12c4db03f7c57f8219", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b52dc23c02df9b59d13d2e706eb0be06606e41748f64ee12c4db03f7c57f8219", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b52dc23c02df9b59d13d2e706eb0be06606e41748f64ee12c4db03f7c57f8219" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b52dc23c02df9b59d13d2e706eb0be06606e41748f64ee12c4db03f7c57f8219", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b52dc23c02df9b59d13d2e706eb0be06606e41748f64ee12c4db03f7c57f8219" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anstyle-query v1.0.2
[INFO] [stderr]    Compiling anstyle v1.0.6
[INFO] [stderr]    Compiling strsim v0.11.0
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling clap_lex v0.7.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling typed-arena v2.0.2
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling separator v0.4.1
[INFO] [stderr]    Compiling anstyle-parse v0.2.3
[INFO] [stderr]    Compiling anstream v0.6.13
[INFO] [stderr]    Compiling clap_builder v4.5.1
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling regex-automata v0.4.5
[INFO] [stderr]    Compiling clap v4.5.1
[INFO] [stderr]    Compiling regex v1.10.3
[INFO] [stderr]    Compiling env_filter v0.1.0
[INFO] [stderr]    Compiling env_logger v0.11.2
[INFO] [stderr]    Compiling sokoban-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(min_specialization)]
[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 `sokoban-solver` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b52dc23c02df9b59d13d2e706eb0be06606e41748f64ee12c4db03f7c57f8219", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b52dc23c02df9b59d13d2e706eb0be06606e41748f64ee12c4db03f7c57f8219", kill_on_drop: false }`
[INFO] [stdout] b52dc23c02df9b59d13d2e706eb0be06606e41748f64ee12c4db03f7c57f8219
