[INFO] fetching crate extdot-impl 0.2.0...
[INFO] checking extdot-impl-0.2.0 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate extdot-impl 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate extdot-impl 0.2.0 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate extdot-impl 0.2.0
[INFO] finished tweaking crates.io crate extdot-impl 0.2.0
[INFO] tweaked toml for crates.io crate extdot-impl 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 859656d2906a0cf8261aae14fb0ce279f0f7caaf68b7ec93d01f20721ff7819d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "859656d2906a0cf8261aae14fb0ce279f0f7caaf68b7ec93d01f20721ff7819d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "859656d2906a0cf8261aae14fb0ce279f0f7caaf68b7ec93d01f20721ff7819d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "859656d2906a0cf8261aae14fb0ce279f0f7caaf68b7ec93d01f20721ff7819d", kill_on_drop: false }`
[INFO] [stdout] 859656d2906a0cf8261aae14fb0ce279f0f7caaf68b7ec93d01f20721ff7819d
[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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fed65bda92663f673687c53d47ba23e6d07256447445a0d318c919e79c11334e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fed65bda92663f673687c53d47ba23e6d07256447445a0d318c919e79c11334e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking extdot-impl v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:37:29
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut rv: Vec<Box<Iterator<Item = TokenTree>>> = vec![];
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = TokenTree>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:37:29
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut rv: Vec<Box<Iterator<Item = TokenTree>>> = vec![];
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = TokenTree>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.68s
[INFO] running `Command { std: "docker" "inspect" "fed65bda92663f673687c53d47ba23e6d07256447445a0d318c919e79c11334e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fed65bda92663f673687c53d47ba23e6d07256447445a0d318c919e79c11334e", kill_on_drop: false }`
[INFO] [stdout] fed65bda92663f673687c53d47ba23e6d07256447445a0d318c919e79c11334e