[INFO] cloning repository https://github.com/lightclient/rust-doc-comment-bug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lightclient/rust-doc-comment-bug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flightclient%2Frust-doc-comment-bug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flightclient%2Frust-doc-comment-bug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10f123214047e609461a00d50d932a9c92e8f346
[INFO] checking lightclient/rust-doc-comment-bug against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flightclient%2Frust-doc-comment-bug" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lightclient/rust-doc-comment-bug on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lightclient/rust-doc-comment-bug
[INFO] finished tweaking git repo https://github.com/lightclient/rust-doc-comment-bug
[INFO] tweaked toml for git repo https://github.com/lightclient/rust-doc-comment-bug written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/lightclient/rust-doc-comment-bug already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fd744f1afe394cce82d0db129ec4aa3e0e90454e9511b3c0b15081e460ad9c4
[INFO] running `Command { std: "docker" "start" "-a" "5fd744f1afe394cce82d0db129ec4aa3e0e90454e9511b3c0b15081e460ad9c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fd744f1afe394cce82d0db129ec4aa3e0e90454e9511b3c0b15081e460ad9c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fd744f1afe394cce82d0db129ec4aa3e0e90454e9511b3c0b15081e460ad9c4", kill_on_drop: false }`
[INFO] [stdout] 5fd744f1afe394cce82d0db129ec4aa3e0e90454e9511b3c0b15081e460ad9c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] daf3f7c707e33467fbbaa7bc4495989db0bad3f7e9dd255dd27e744e0a42f02d
[INFO] running `Command { std: "docker" "start" "-a" "daf3f7c707e33467fbbaa7bc4495989db0bad3f7e9dd255dd27e744e0a42f02d", kill_on_drop: false }`
[INFO] [stderr]     Checking weird v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "daf3f7c707e33467fbbaa7bc4495989db0bad3f7e9dd255dd27e744e0a42f02d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daf3f7c707e33467fbbaa7bc4495989db0bad3f7e9dd255dd27e744e0a42f02d", kill_on_drop: false }`
[INFO] [stdout] daf3f7c707e33467fbbaa7bc4495989db0bad3f7e9dd255dd27e744e0a42f02d