[INFO] fetching crate optional 0.5.0...
[INFO] checking optional-0.5.0 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate optional 0.5.0 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate optional 0.5.0 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate optional 0.5.0
[INFO] finished tweaking crates.io crate optional 0.5.0
[INFO] tweaked toml for crates.io crate optional 0.5.0 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc4eb52f9a63538e934981c7292322f396c3350cf8cc9fa83ebdec1bf877b6e6
[INFO] running `Command { std: "docker" "start" "-a" "bc4eb52f9a63538e934981c7292322f396c3350cf8cc9fa83ebdec1bf877b6e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc4eb52f9a63538e934981c7292322f396c3350cf8cc9fa83ebdec1bf877b6e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc4eb52f9a63538e934981c7292322f396c3350cf8cc9fa83ebdec1bf877b6e6", kill_on_drop: false }`
[INFO] [stdout] bc4eb52f9a63538e934981c7292322f396c3350cf8cc9fa83ebdec1bf877b6e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4774072c754aa9b7946669f76c3bf65da0c95e91e4ab0d0371dfcf71a8853e0e
[INFO] running `Command { std: "docker" "start" "-a" "4774072c754aa9b7946669f76c3bf65da0c95e91e4ab0d0371dfcf71a8853e0e", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] no edition found in manifest, probably 2015, skipping
[INFO] running `Command { std: "docker" "inspect" "4774072c754aa9b7946669f76c3bf65da0c95e91e4ab0d0371dfcf71a8853e0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4774072c754aa9b7946669f76c3bf65da0c95e91e4ab0d0371dfcf71a8853e0e", kill_on_drop: false }`
[INFO] [stdout] 4774072c754aa9b7946669f76c3bf65da0c95e91e4ab0d0371dfcf71a8853e0e