[INFO] fetching crate button 0.1.0...
[INFO] checking button-0.1.0 against master#8202d110516c6bd87cee375e9a9b774db499015c for pr-149596
[INFO] extracting crate button 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate button 0.1.0
[INFO] finished tweaking crates.io crate button 0.1.0
[INFO] tweaked toml for crates.io crate button 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate button 0.1.0 on toolchain 8202d110516c6bd87cee375e9a9b774db499015c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate button 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" "+8202d110516c6bd87cee375e9a9b774db499015c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e66ac645cafee43c8878d933d5651516fa88d9d6128601eaf152acd88d21897
[INFO] running `Command { std: "docker" "start" "-a" "4e66ac645cafee43c8878d933d5651516fa88d9d6128601eaf152acd88d21897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e66ac645cafee43c8878d933d5651516fa88d9d6128601eaf152acd88d21897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e66ac645cafee43c8878d933d5651516fa88d9d6128601eaf152acd88d21897", kill_on_drop: false }`
[INFO] [stdout] 4e66ac645cafee43c8878d933d5651516fa88d9d6128601eaf152acd88d21897
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7deba809dbe85b9b94e610c9cce830bb600de91092a0e50ebcc45c97fefad4dc
[INFO] running `Command { std: "docker" "start" "-a" "7deba809dbe85b9b94e610c9cce830bb600de91092a0e50ebcc45c97fefad4dc", kill_on_drop: false }`
[INFO] [stderr]     Checking button v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "7deba809dbe85b9b94e610c9cce830bb600de91092a0e50ebcc45c97fefad4dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7deba809dbe85b9b94e610c9cce830bb600de91092a0e50ebcc45c97fefad4dc", kill_on_drop: false }`
[INFO] [stdout] 7deba809dbe85b9b94e610c9cce830bb600de91092a0e50ebcc45c97fefad4dc