[INFO] fetching crate af-slack 0.1.0...
[INFO] checking af-slack-0.1.0 against master#0d56e340472882fa673d4b98d0802b9a799879d0 for pr-101692
[INFO] extracting crate af-slack 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate af-slack 0.1.0 on toolchain 0d56e340472882fa673d4b98d0802b9a799879d0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate af-slack 0.1.0
[INFO] finished tweaking crates.io crate af-slack 0.1.0
[INFO] tweaked toml for crates.io crate af-slack 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate af-slack 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e869aa524fde82b6496cd814334734708c66ca02dc84e093464334840d3bbc0
[INFO] running `Command { std: "docker" "start" "-a" "2e869aa524fde82b6496cd814334734708c66ca02dc84e093464334840d3bbc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e869aa524fde82b6496cd814334734708c66ca02dc84e093464334840d3bbc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e869aa524fde82b6496cd814334734708c66ca02dc84e093464334840d3bbc0", kill_on_drop: false }`
[INFO] [stdout] 2e869aa524fde82b6496cd814334734708c66ca02dc84e093464334840d3bbc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 662197f6cdc26a394f052b2fd4d173a3212ae8e08f79838c975552e672ebdef4
[INFO] running `Command { std: "docker" "start" "-a" "662197f6cdc26a394f052b2fd4d173a3212ae8e08f79838c975552e672ebdef4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
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[INFO] [stderr]     Checking af-slack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.63s
[INFO] running `Command { std: "docker" "inspect" "662197f6cdc26a394f052b2fd4d173a3212ae8e08f79838c975552e672ebdef4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "662197f6cdc26a394f052b2fd4d173a3212ae8e08f79838c975552e672ebdef4", kill_on_drop: false }`
[INFO] [stdout] 662197f6cdc26a394f052b2fd4d173a3212ae8e08f79838c975552e672ebdef4