[INFO] fetching crate yaml-front-matter 0.1.0...
[INFO] checking yaml-front-matter-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate yaml-front-matter 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate yaml-front-matter 0.1.0
[INFO] finished tweaking crates.io crate yaml-front-matter 0.1.0
[INFO] tweaked toml for crates.io crate yaml-front-matter 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate yaml-front-matter 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4acd19f94aacb16e79ecb8a0a3a97937f2cb299a46e4a2571e8244391b85798
[INFO] running `Command { std: "docker" "start" "-a" "e4acd19f94aacb16e79ecb8a0a3a97937f2cb299a46e4a2571e8244391b85798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4acd19f94aacb16e79ecb8a0a3a97937f2cb299a46e4a2571e8244391b85798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4acd19f94aacb16e79ecb8a0a3a97937f2cb299a46e4a2571e8244391b85798", kill_on_drop: false }`
[INFO] [stdout] e4acd19f94aacb16e79ecb8a0a3a97937f2cb299a46e4a2571e8244391b85798
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0edf200596f8734cea896f0fb3e5cd3db780dff9f258fad1151339827f93e849
[INFO] running `Command { std: "docker" "start" "-a" "0edf200596f8734cea896f0fb3e5cd3db780dff9f258fad1151339827f93e849", kill_on_drop: false }`
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking yaml-front-matter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `__private::doc`
[INFO] [stdout]    --> src/lib.rs:165:30
[INFO] [stdout]     |
[INFO] [stdout] 165 |     use serde::{Deserialize, __private::doc};
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `Command { std: "docker" "inspect" "0edf200596f8734cea896f0fb3e5cd3db780dff9f258fad1151339827f93e849", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0edf200596f8734cea896f0fb3e5cd3db780dff9f258fad1151339827f93e849", kill_on_drop: false }`
[INFO] [stdout] 0edf200596f8734cea896f0fb3e5cd3db780dff9f258fad1151339827f93e849