[INFO] fetching crate ext-string 0.1.5...
[INFO] checking ext-string-0.1.5 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate ext-string 0.1.5 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate ext-string 0.1.5 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ext-string 0.1.5
[INFO] finished tweaking crates.io crate ext-string 0.1.5
[INFO] tweaked toml for crates.io crate ext-string 0.1.5 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc1c4a89a91e99c5e77aa0d0ac137d9945cbe570a01a9b7df5e2a9b3377c502d
[INFO] running `Command { std: "docker" "start" "-a" "bc1c4a89a91e99c5e77aa0d0ac137d9945cbe570a01a9b7df5e2a9b3377c502d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc1c4a89a91e99c5e77aa0d0ac137d9945cbe570a01a9b7df5e2a9b3377c502d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc1c4a89a91e99c5e77aa0d0ac137d9945cbe570a01a9b7df5e2a9b3377c502d", kill_on_drop: false }`
[INFO] [stdout] bc1c4a89a91e99c5e77aa0d0ac137d9945cbe570a01a9b7df5e2a9b3377c502d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 100754f02d6f936938190fe29523e6f32107382d0f63a19cd2d02f95cc7900ab
[INFO] running `Command { std: "docker" "start" "-a" "100754f02d6f936938190fe29523e6f32107382d0f63a19cd2d02f95cc7900ab", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking ext-string v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "100754f02d6f936938190fe29523e6f32107382d0f63a19cd2d02f95cc7900ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "100754f02d6f936938190fe29523e6f32107382d0f63a19cd2d02f95cc7900ab", kill_on_drop: false }`
[INFO] [stdout] 100754f02d6f936938190fe29523e6f32107382d0f63a19cd2d02f95cc7900ab