[INFO] fetching crate pencil-lang 0.0.0-rc...
[INFO] testing pencil-lang-0.0.0-rc against 1.90.0 for beta-1.91-3
[INFO] extracting crate pencil-lang 0.0.0-rc into /workspace/builds/worker-1-tc1/source
[INFO] removed /workspace/builds/worker-1-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate pencil-lang 0.0.0-rc
[INFO] finished tweaking crates.io crate pencil-lang 0.0.0-rc
[INFO] tweaked toml for crates.io crate pencil-lang 0.0.0-rc written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pencil-lang 0.0.0-rc on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pencil-lang 0.0.0-rc 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc44d85bca3b0de576b6fb0109c30972c4b958608607d3829e369db9e67b8958
[INFO] running `Command { std: "docker" "start" "-a" "cc44d85bca3b0de576b6fb0109c30972c4b958608607d3829e369db9e67b8958", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc44d85bca3b0de576b6fb0109c30972c4b958608607d3829e369db9e67b8958", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc44d85bca3b0de576b6fb0109c30972c4b958608607d3829e369db9e67b8958", kill_on_drop: false }`
[INFO] [stdout] cc44d85bca3b0de576b6fb0109c30972c4b958608607d3829e369db9e67b8958
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a9127542094fdcc5085c8754385c6ad15f6c2159c59ea2bd06531cb518574e1
[INFO] running `Command { std: "docker" "start" "-a" "7a9127542094fdcc5085c8754385c6ad15f6c2159c59ea2bd06531cb518574e1", kill_on_drop: false }`
[INFO] [stderr] error: rustc 1.90.0 is not supported by the following package:
[INFO] [stderr]   pencil-lang@0.0.0-rc requires rustc 1.91.0
[INFO] [stderr] 
[INFO] running `Command { std: "docker" "inspect" "7a9127542094fdcc5085c8754385c6ad15f6c2159c59ea2bd06531cb518574e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a9127542094fdcc5085c8754385c6ad15f6c2159c59ea2bd06531cb518574e1", kill_on_drop: false }`
[INFO] [stdout] 7a9127542094fdcc5085c8754385c6ad15f6c2159c59ea2bd06531cb518574e1