[INFO] fetching crate lanterns 0.1.0...
[INFO] checking lanterns-0.1.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate lanterns 0.1.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate lanterns 0.1.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lanterns 0.1.0
[INFO] finished tweaking crates.io crate lanterns 0.1.0
[INFO] tweaked toml for crates.io crate lanterns 0.1.0 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate crates.io crate lanterns 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7970f11e71d23a540f3e1068ca65f61120d40cb32d3d4aed94ca9f99331ea101
[INFO] running `Command { std: "docker" "start" "-a" "7970f11e71d23a540f3e1068ca65f61120d40cb32d3d4aed94ca9f99331ea101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7970f11e71d23a540f3e1068ca65f61120d40cb32d3d4aed94ca9f99331ea101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7970f11e71d23a540f3e1068ca65f61120d40cb32d3d4aed94ca9f99331ea101", kill_on_drop: false }`
[INFO] [stdout] 7970f11e71d23a540f3e1068ca65f61120d40cb32d3d4aed94ca9f99331ea101
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bd8bcfc3eb039342d00d2d99ca2f9665a575efb33e66da81423f549b78a09b7
[INFO] running `Command { std: "docker" "start" "-a" "6bd8bcfc3eb039342d00d2d99ca2f9665a575efb33e66da81423f549b78a09b7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking lanterns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.98s
[INFO] running `Command { std: "docker" "inspect" "6bd8bcfc3eb039342d00d2d99ca2f9665a575efb33e66da81423f549b78a09b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bd8bcfc3eb039342d00d2d99ca2f9665a575efb33e66da81423f549b78a09b7", kill_on_drop: false }`
[INFO] [stdout] 6bd8bcfc3eb039342d00d2d99ca2f9665a575efb33e66da81423f549b78a09b7