[INFO] fetching crate copper 0.1.0...
[INFO] documenting copper-0.1.0 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate copper 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate copper 0.1.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate copper 0.1.0
[INFO] finished tweaking crates.io crate copper 0.1.0
[INFO] tweaked toml for crates.io crate copper 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate copper 0.1.0 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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92a42d2c07b9a1c2b86ca08dc8a4c69637da4aadb2359b8dd82b9e621a0df38d
[INFO] running `Command { std: "docker" "start" "-a" "92a42d2c07b9a1c2b86ca08dc8a4c69637da4aadb2359b8dd82b9e621a0df38d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92a42d2c07b9a1c2b86ca08dc8a4c69637da4aadb2359b8dd82b9e621a0df38d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92a42d2c07b9a1c2b86ca08dc8a4c69637da4aadb2359b8dd82b9e621a0df38d", kill_on_drop: false }`
[INFO] [stdout] 92a42d2c07b9a1c2b86ca08dc8a4c69637da4aadb2359b8dd82b9e621a0df38d
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 041e8498db04df52cbab585b4ba7c6ebb76346f7c7e5eba667282c43768447a9
[INFO] running `Command { std: "docker" "start" "-a" "041e8498db04df52cbab585b4ba7c6ebb76346f7c7e5eba667282c43768447a9", kill_on_drop: false }`
[INFO] [stderr] error: package `copper v0.1.0 (/opt/rustwide/workdir)` cannot be built because it requires rustc 1.77 or newer, while the currently active rustc version is 1.76.0
[INFO] [stderr] 
[INFO] running `Command { std: "docker" "inspect" "041e8498db04df52cbab585b4ba7c6ebb76346f7c7e5eba667282c43768447a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "041e8498db04df52cbab585b4ba7c6ebb76346f7c7e5eba667282c43768447a9", kill_on_drop: false }`
[INFO] [stdout] 041e8498db04df52cbab585b4ba7c6ebb76346f7c7e5eba667282c43768447a9
